胶州湾基底新元古代变花岗岩的发现与地质意义

董杰, 朱晓青, 窦衍光, 宋维宇, 薛碧颖, 邹亮

董杰,朱晓青,窦衍光,等. 胶州湾基底新元古代变花岗岩的发现与地质意义[J]. 海洋地质与第四纪地质,2024,44(6): 163-174. DOI: 10.16562/j.cnki.0256-1492.2023031002
引用本文: 董杰,朱晓青,窦衍光,等. 胶州湾基底新元古代变花岗岩的发现与地质意义[J]. 海洋地质与第四纪地质,2024,44(6): 163-174. DOI: 10.16562/j.cnki.0256-1492.2023031002
DONG Jie,ZHU Xiaoqing,DOU Yanguang,et al. Discovery and geological implications of Neoproterozoic metagranite in Jiaozhou Bay[J]. Marine Geology & Quaternary Geology,2024,44(6):163-174. DOI: 10.16562/j.cnki.0256-1492.2023031002
Citation: DONG Jie,ZHU Xiaoqing,DOU Yanguang,et al. Discovery and geological implications of Neoproterozoic metagranite in Jiaozhou Bay[J]. Marine Geology & Quaternary Geology,2024,44(6):163-174. DOI: 10.16562/j.cnki.0256-1492.2023031002

胶州湾基底新元古代变花岗岩的发现与地质意义

基金项目: 自然资源部滨海城市地下空间地质安全重点实验室开放课题(BHKF2021Z06);中国地质调查局青岛多要素城市地质调查项目(DD20189230)
详细信息
    作者简介:

    董杰(1981—),男,博士,正高级工程师,主要从事水工环地质研究,E-mail:13853286966@163.com

    通讯作者:

    朱晓青(1982—),男,博士,副研究员,主要从事构造地质与海洋地质等研究,E-mail:xq_zhu0819@126.com

  • 中图分类号: P736

Discovery and geological implications of Neoproterozoic metagranite in Jiaozhou Bay

  • 摘要:

    胶州湾为青岛市的半封闭海湾,对湾内基底岩石属性等的基础地质认识是青岛城市重大工程建设与未来城市规划的重要依据。本文借助锆石U-Pb测年的方法,在胶州湾区钻孔岩芯中首次发现新元古代变花岗岩质基底,其形成时代为约772 Ma,与区域上苏鲁造山带内广泛分布的新元古代花岗岩同期。钻孔内新元古代变花岗岩下部为早白垩世花岗岩侵入,花岗岩时代为约120 Ma,与毗邻的崂山花岗岩等岩体时代一致。钻孔岩芯中早白垩世花岗岩锆石与新元古代变花岗岩锆石的微量元素分布特征相似,但其含量值范围更窄。胶州湾区早白垩世花岗岩岩浆可能源自新元古代花岗质岩石的重熔。借助锆石Ti温度计计算获得胶州湾内新元古代变花岗岩与早白垩世花岗岩岩浆结晶温度均超过750 ℃,表明锆石结晶的岩浆源区呈水不饱和状态,暗示两期岩浆活动的动力学机制可能均与洋壳俯冲对应的“大地幔楔”模式无关。

    Abstract:

    Jiaozhou Bay is a semi-enclosed bay in Qingdao City in Shandong Peninsula, East China. Understanding the main geological frame of the basement rocks in the bay is crucial for large engineering projects and future urban planning in Qingdao. In this study, Neoproterozoic metamorphic granites (ca. 772 Ma) was discovered for the first time from drilling cores in Jiaozhou Bay .The basement rock is contemporaneous with Neoproterozoic granites that widely distributed in the Sulu orogenic belt. The lower part of the Neoproterozoic metamorphic granites in drilling cores was intruded by Early Cretaceous granites in age of ca. 120 Ma, which is consistent with the ages of adjacent Laoshan granites. The trace element distribution patterns of zircons in the Early Cretaceous granites and Neoproterozoic metamorphic granites in the drilling cores of Jiaozhou Bay are similar but showing a narrower range. The Early Cretaceous granite magma in the Jiaozhou Bay area might be derived from the remelting of Neoproterozoic granitic rocks. The crystallization temperatures of the Neoproterozoic metamorphic granites and Early Cretaceous granites determined by using zircon-Ti thermometer are both higher than 750°C, indicating that the source magma were water-undersaturated. This results suggest that the dynamic mechanisms of the two magmatic events may not be related to the oceanic subduction-related "Big mantle wedge" model.

  • 海底冷泉活动中广泛发育自生碳酸盐岩[1], 其往往指示强度很高、同时伴随沉积环境和氧化还原条件剧烈变化的流体渗漏活动[1-2]。不同的沉积条件下形成的冷泉碳酸盐岩有着不同的形态学、矿物学和地球化学特征[3-5],可以很好地反映沉积时的冷泉流体类型、活动强度、流体来源及生物地球化学信息[6-11],是研究深海冷泉环境必不可少的研究对象。冷泉碳酸盐岩烟囱以其独特的流体管道和圆柱形的形貌成为冷泉流体渗漏活动最显著的证据之一,使其受到了特别关注,包括成岩环境、流体来源以及成岩模式的研究都较多[12-17]

    中国南海北部广泛发育冷泉区[18-30],其中不同海域的冷泉碳酸盐岩的碳、氧同位素组成变化范围较大, 反映了冷泉流体的来源、渗漏速率及沉积环境均有较大差异[2]。南海东沙东北陆坡发育大量冷泉碳酸盐岩烟囱[31-36],这些烟囱的形成除了与海底天然气水合物分解释放的流体有关外,其烟囱内外层具有明显不同的矿物学和地球化学特征,呈现由外向内的生长模式,表明冷泉中渗漏流体扩散作用的影响,这使得烟囱状冷泉碳酸盐岩成为了记录时间和空间上冷泉流体渗漏组成和强度等特征变化的良好载体[32-34]

    尽管冷泉碳酸盐岩烟囱样品中渗漏流体强度变化对碳、硫、氧化还原敏感的微量元素的影响已经有相关研究[32-35],但目前对这种强渗漏环境下,渗漏流体强度变化对铁(Fe)和磷(P)元素循环及相关生物地球化学过程的影响还不清楚。在海底甲烷渗漏环境中,碳-铁耦合的相关生物地球化学过程可能会驱动磷元素循环过程,即Fe驱动的甲烷厌氧氧化过程有可能导致了含磷矿物蓝铁矿的形成[37-44]。前人对南海块状冷泉碳酸盐岩的磷组分和磷循环进行了分析和研究[42],但块状冷泉碳酸盐岩样品相比烟囱状冷泉碳酸盐岩样品而言,无法提供甲烷渗漏流体强度变化信息,导致无法探讨渗漏流体强度变化对Fe和P元素循环和相关生物地球化学过程的影响。

    因此,南海东沙海域广泛发育的烟囱状冷泉碳酸盐岩样品是研究不同流体渗漏强度对不同磷组分和铁-磷耦合影响的绝佳材料。本文将以南海东沙海域典型的烟囱状冷泉碳酸盐岩为研究对象,进行相应的磷组分和铁组分的分步提取和其他相关基本地球化学参数分析,鉴别不同形态磷和铁的来源和特征,阐明不同形态磷和铁可能参与的生物地球化学循环过程,揭示不同甲烷渗漏强度环境中甲烷渗漏活动对不同磷组分和铁-磷耦合关系影响,从而加深甲烷渗漏活动对海底磷、铁循环影响的认识。

    本文将以由“海洋四号”科考船于2015年在九龙甲烷礁“Site 3”通过海底拖网采集获得的南海东沙海域典型的烟囱状冷泉碳酸盐岩为研究对象,将采集到的冷泉碳酸盐岩样品用切割机沿着烟囱横截面切割,总体上烟囱样品直径约10 cm,外层呈现的颜色要比内层颜色深,内层烟囱孔洞发育。沿横截面从外向内对冷泉碳酸盐岩烟囱用牙钻取10个样品(图1),进行相应的磷组分和铁组分的分步提取和其他相关地球化学分析。

    图  1  采样位置和样品情况
    a: 位于东沙海域的采样站位九龙甲烷礁site 3;b: 冷泉碳酸盐岩烟囱样品横切面和取样点S1到S10。冷泉碳酸盐岩烟囱的横截面直径约10 cm,用牙钻间隔约0.8 cm取一个点,共取10个点。
    Figure  1.  Sampling location and subsamples
    a: The sampling site located in the Dongsha sea area, known as Methane Reef Site 3; b: the subsample of seep carbonates chimneys from S1to S10. The cross-section diameter of the seep carbonates chimneys is about 10 cm, and one point was taken about 0.8 cm apart for 10 points in total.

    冷泉碳酸盐岩烟囱物相分析(XRD)在上海海洋大学完成。用德国 BRUKER D8 ADVANCE X 射线衍射仪进行分析,工作参数为铜靶 Kα射线,功率为 40 kV,30 mA,扫描范围 2θ = 3°~85°,入射狭缝为 1 mm,扫描速度为 4°/min。矿物百分含量以d[104]峰作为校准曲线计算方解石、镁方解石的比例,以d[111]峰高计算文石的相对含量。通过d[104]峰高计算碳酸盐岩矿物中镁的含量。

    冷泉碳酸盐岩烟囱中碳和硫含量在上海海洋大学Elementar型元素分析仪测定。用超精密天平取其中约 25 mg 粉末样品进行上机测试。得到的数据是冷泉碳酸盐岩烟囱中总碳(TC) 和总硫(TS)含量。采用正磷酸法测定碳酸盐岩中碳酸盐相的碳氧同位素组成,具体做法在 75 ℃ 条件下,利用正磷酸与样品反应释放的CO2,通过Thermo Finnigan Delta V Advantage稳定同位素质谱仪对释放的CO2进行分析获得碳氧同位素组成。以 VPDB 国际标准为参考标准,δ13C 和 δ18O分析精度均优于±0.1‰。

    参照经典文献和最新文献[45-47]中所示方法进行冷泉碳酸盐岩中不同铁组分化学连续提取。不同铁组分提取步骤和相应条件如下:①碳酸盐相的铁(FeCarb),约50 mg样品与1 M乙酸钠溶液反应24 h,pH=4.5;②易还原铁氧化物的铁(FeOx1),上一步离心后的残渣与溶于体积分数为25%乙酸的1 M 盐酸羟胺溶液反应 48 h;③可还原性铁氧化物的铁(FeOx2),上一步离心后的残渣与 50 g/L 连二亚硫酸钠溶液反应2 h,pH=4.8(用0.35 M乙酸/0.2 M乙酸钠调节pH值);④磁铁矿的铁(FeMag),上一步离心后的残渣与 0.2 M 草酸铵/0.17 M 草酸混合溶液反应 6 h,pH=3.2。上述操作均在室温下进行,每步提取完成后离心并用0.2 μm滤膜过滤取上清液待测。FeCarb、FeOx1 和 FeOx2含量测试按照Alcott 等[47]所示方法,使用分光光度法进行测试,FeMag的含量用电感耦合等离子体发射光谱仪(ICP-OES)测试。实验室内部标样和平行样用于整个提取实验的质量监控,结果显示不同铁组分分析的相对误差通常小于5%。

    冷泉碳酸盐样品中不同形态磷的提取及含量测定参照化学连续提取法[48](即SEDEX法)进行。约50 mg样品依次与相应提取液反应,主要步骤如下:①可交换态磷(PEx)提取。使用1 M MgCl2提取液(pH=8),提取0.5 h;②铁氧化物结合态磷(PFe)提取。使用0.3 M柠檬酸钠和25 g/L连二亚硫酸钠作为提取液(pH=7.5),反应8 h。过滤后的样品接着用1 M 氯化镁提取液(pH=8)清洗半小时并离心过滤取上清液;③自生磷酸盐的磷(PAuth)提取。使用1 M醋酸钠-醋酸缓冲液提取(醋酸调节pH至4),反应6 h。接着过滤的沉积物同样用1 M 氯化镁提取液(pH=8)清洗半小时并离心过滤取上清液;④陆源碎屑磷(PDetr)提取。使用1 M盐酸溶液提取,反应24 h;⑤有机磷(POrg)提取。为了防止化学连续提取过程中POrg的损失,采用差值法进行POrg的提取。具体步骤包括:(a)冷泉碳酸盐岩样品与1 M盐酸溶液反应24 h;(b)样品经过550 ℃灼烧2 h后,与1 M盐酸溶液反应24 h。上述步骤(b)与(a)磷含量的差值即POrg。上述所有提取实验均在室温下进行,其中,PEx和PFe的提取应在无氧的、充满氮气的手套箱中进行操作,以防止黄铁矿的氧化对PEx和PFe含量的干扰[43-44]。采用分光光度法测试提取液中PEx、PAuth、PDetr、POrg的含量。为了使得提取液中PFe含量能够用分光光度法测试、消除提取液对分光光度法的干扰,按照Huerta-Diaz等[49]前处理方法,对含PFe的提取液使用Mg(OH)2共沉淀法消除干扰,然后用弱碱性溶液清洗干净后用盐酸溶解,最后用分光光度法测试PFe含量。根据实验室内部标样和平行样结果,不同磷组分含量分析相对误差一般小于10%。

    冷泉碳酸盐岩烟囱的矿物成分主要有4种,包括石英、长石、方解石和文石(图2)。结合取样点,可以把样品分成内外两层,其中编号S1—S3和S8—S10为烟囱外层,编号S4—S7为烟囱内层。除内层的S5和S7碳酸盐岩矿物主要为文石外(文石含量在70%以上),其余编号的碳酸盐矿物主要由方解石组成,方解石含量为70.2%~84.1%。烟囱内外层都含有较高的陆源碎屑矿物,主要包括石英、长石,含量为 10.7%~29.8%,总体上来看,大致具有外层陆源碎屑矿物含量普遍高于内层的规律。

    图  2  冷泉碳酸盐岩烟囱的矿物组成
    Figure  2.  Mineral composition of seep carbonate chimneys

    冷泉碳酸盐岩烟囱样品总碳含量为 0.21%~11.70%,变化较大,平均含量约7.62%(图3a)。随外层向内层有微弱的减少趋势,S5点总碳含量最低,而S2出现了相对较高的总碳含量。样品中总硫(TS)含量变化较小,平均含量约0.11%,其中S1出现了极高的总硫含量,S5和S10 出现了相对较高的总硫含量,总体来看硫含量偏高。

    图  3  冷泉碳酸盐岩烟囱样品的碳、硫含量(a)以及碳和氧稳定同位素组成(b)
    Figure  3.  Carbon and sulfur content (a), and carbon and oxygen stable isotope compositions (b) of the seep carbonate chimney samples

    冷泉碳酸盐岩烟囱的碳氧同位素变化范围较大(图3b)。δ13C 为−61.73‰~−55.53‰,平均值约为−58.78‰,δ18O 为5.45‰~5.83‰,平均值约为5.61‰。其中编号S5、S6、S7的碳同位素组成较其他编号明显偏负,而氧同位素组成则呈波动性,编号S2、S6、S10的氧同位素组成明显偏正。

    碳酸盐岩烟囱样品各铁组分含量分析结果见图4a。结果显示,FeCarb含量总体变化不大,内层略低,其中S5处FeCarb含量仅有0.02 mg/g,而烟囱外层FeCarb平均含量为3.97 mg/g。FeMag含量从烟囱内层到外层逐渐升高,其变化范围为0.05~0.90 mg/g,平均为0.58 mg/g,在S5处含量最低。FeOx含量为FeOx1 和 FeOx2含量之和,其含量靠近烟囱内层同样逐渐减少,S5和S7处FeOx含量很低,其中S7处为0.80 mg/g,外层平均5.99 mg/g。由于冷泉碳酸盐岩样品中的硫一般由黄铁矿的硫构成,因此黄铁矿的铁(Fepy)含量可以根据样品中总硫含量进行粗略估算。Fepy含量除S1、S5和S10以外7个点含量大致相同,平均为1.01 mg/g。而S1处测出含量值8.94 mg/g,明显高于其他点位,S5和S10的含量分别为1.94 mg/g 和1.76 mg/g,略高于另外7个点位。整体来看,Fepy含量外层外围高于内层,向内含量逐渐降低,到内层中心又重新增加。

    图  4  冷泉碳酸盐岩烟囱的不同铁和磷组分含量
    Figure  4.  Contents of different iron and phosphorus component of seep carbonates chimneys

    碳酸盐岩烟囱样品各取样点铁组分相对含量分析结果见图5a。结果显示, FeCarb内层占比略高于外层,但是在S5 处出现极低值(0.995%);FeMag占比内外层相当,都较低;FeOx1内外层差异不大,S5未测出FeOx1,占比为0;FeOx2内层低于外层,向内占比逐渐降低,特别是S5和S7均为0;FePy内层占比高于外层,特别是S5处占比为96.5%,明显高于其他点位,S1(37.8%)和S10(34.9%)也较其他点位占比高。整体而言,S1、S5和S7三点FePy占比更高,其他点位FeOx1和FeCarb占比更高。以FePy与烟囱样品高活性铁FeHR(FeHR = FeCarb + FeOx1 + FeOx2 + FeMag + FePy)比值表征样品黄铁矿化程度,结果显示,烟囱外围黄铁矿化度较高,向内有所降低,内层又有所增高,特别是S5,FePy/FeHR值为0.964。

    图  5  冷泉碳酸盐岩烟囱样品各铁组分和磷组分相对百分占比
    a:铁组分相对百分占比,b:磷组分相对百分占比。
    Figure  5.  Relative proportions of iron and phosphorus component in the seep carbonate chimney samples
    a: Relative proportions of the iron component, b: relative proportions of the phosphorus component.

    烟囱样品中各取样点磷组分含量见图4b。POrg平均为0.57 µmol/g,内外层差异不大。PEx含量外层比内层稍高,S5和S7点PEx含量最低,为0.92 µmol/g。PDetr含量内层明显比外层低,外层平均含量为5.15 µmol/g,而S5处含量最低,仅为0.42 µmol/g。PFe和PAuth含量内层与外围含量相当,特别是S6处PAuth明显较其他点位大、出现极大值8.39 µmol/g。从样品的总无机磷(PInorg,PInorg = PEx + PFe + PAuth + PDetr)含量上看,外层含量相当,平均值为13.73 µmol/g。而内层含量则相对较少,特别是S5(8.87 µmol/g)和S7(9.31 µmol/g),含量明显较其他点位小。

    碳酸盐岩烟囱样品各取样点磷组分相对含量分析结果见图5b。结果显示,PEx和PFe内外层相当,占比均较低;PAuth占比内层高于外层,特别是S5和S6,PAuth占比约60%;而PDetr占比则外层高于内层,S5处PDetr占比最小,仅为4.33%。POrg占比均较低,个别点占比为0。整体而言,烟囱样品内外层磷组分占比中PAuth最高,其次为PDetr

    碳酸盐岩烟囱极端负偏的碳同位素组成(δ13CVPDB<−55.53‰,图3)表明甲烷的厌氧氧化作用导致了该碳酸盐的形成。由于样品的δ13C值均低于–50‰,可以推断形成烟囱的流体中甲烷来源为生物成因。根据前人在相同站位冷泉碳酸盐岩的年代学数据和当时的海底温度(3.3~4.1 ℃)和海水氧同位素组成(0.64‰~0.97‰)[32],假定本文冷泉碳酸盐岩样品也在同期形成,通过方解石/文石-水体系的氧同位素分馏方程计算它们与海水平衡时的氧同位素组成变化范围分别为2.5‰~2.7‰和3.2‰~3.4‰。对比发现冷泉碳酸盐岩烟囱表现出异常高的氧同位素组成(5.45‰~5.83‰),这说明其形成时有富18O 流体的加入。天然气水合物分解和黏土矿物脱水反应均有可能导致冷泉流体中的水富含18O。考虑到本研究区附近表层沉积物发育水合物[50],并且表层沉积物孔隙水中也没有黏土矿物脱水反应导致孔隙水浓度异常的报道[51-53],因此推测烟囱的18O富集主要来源于富含18O 水合物的分解。

    前人研究结果显示本研究区冷泉碳酸盐岩烟囱样品的生长是由外向内,即外层先形成,内层后形成[32-34]。冷泉碳酸盐岩烟囱外层具有较高含量的石英、长石等陆源碎屑物质以及铁氧化物以及碎屑磷(图24),说明其在早期形成过程中受到较大的背景沉积的影响,在形成过程中捕获了更多背景沉积物,这些陆源碎屑物质中的TOC可能会影响烟囱的δ13C值。另外,根据之前对本区冷泉碳酸盐岩烟囱的研究,烟囱由外层向内层形成的过程中,由于渗漏通道空间越来越小, 导致流体渗漏强度越来越大[31]。本文研究的碳酸盐岩烟囱内层S3和S5点位以文石为主,而其余样品均以方解石为主(图2),同时一般认为文石相比方解石形成时的环境中硫酸盐浓度更高[16, 54],因此推测本文碳酸盐岩烟囱形成过程中流体渗漏强度内层要高于外层。这种内层渗漏强度高的特征,会使得形成于内层的自生沉积矿物更容易受到甲烷流体的影响,导致本文和类似的烟囱状碳酸盐岩样品中δ13C组成普遍出现两边高、中心低的分布特征[34, 55]图3b)。

    在大陆边缘环境中,铁、磷的耦合循环是一个动态过程[39, 42-43, 56-61]。铁氧化物还原、有机质氧化或甲烷厌氧氧化等过程中铁氧化物伴生的磷会被释放出来。碎屑磷在沉积于海底之前无法被利用,在埋藏后也不会发生相变[40]。烟囱样品磷组分提取结果显示碎屑磷含量内层比外层低(图5b),表明烟囱形成前期陆源碎屑输入较多,受到陆源碎屑输入的影响,可能导致陆源输入的铁氧化物从外层向内层含量降低。随着流体强度变化,冷泉渗漏环境中较强的微生物硫酸盐还原作用,不仅导致更加还原的环境和更多活性铁(主要是铁氧化物)的消耗,影响了烟囱内外层黄铁矿化度,也抑制了Fe的异化还原[33]。这些叠加因素可能最终导致了碳酸盐岩烟囱样品中铁氧化物含量内层低于外层。同时,铁氧化物的还原也会伴随其吸附无机磷的释放[39],也有可能会影响样品中磷的分布。

    由冷泉碳酸盐岩烟囱磷组分占比(图5b)可知,PAuth所占比例最大,其次是PDetr、PFe、PEx和POrg。烟囱样品中磷的分配表明,流体中最主要的一部分磷以自生磷酸盐(PAuth)的形式沉淀。磷从不稳定形态转移到PAuth,被认为是导致磷在全球海洋沉积物中埋藏的主要过程[62]。PAuth的形成是海洋沉积物中普遍存在的现象,但其具体机制尚不清楚[42]。冷泉渗漏流体中的磷来源于硫酸盐-甲烷过渡带下方,并在自生碳酸盐岩矿物中被化学吸附[42]。硫酸盐驱动的甲烷厌氧氧化可通过增加冷泉渗环境中孔隙水的碱度,导致沉积物或海底自生钙碳酸盐岩的沉淀[39,63]。这些形成的碳酸钙可能是自生PAuth沉淀的成核位点[42]。冷泉碳酸盐岩烟囱中PFe/FeOx比值内层明显高于外层(图6),显示冷泉碳酸盐岩烟囱内层更富集PFe,表明内层有额外的磷加入。PFe的含量内层稍高,可能与铁氧化物吸附磷和铁(II)磷矿物有关,而铁(II)磷矿物主要为蓝铁矿类矿物[39],在铁的连续提取过程在第②步被提取,从而被包含在化学提取的PFe中。结合碳酸盐岩烟囱内层FeOx含量低和相应吸附磷含量也低的特征[39],推测烟囱内层可能有蓝铁矿形成。烟囱样品S6中铁结合态磷含量低可能与后期蓝铁矿发生蚀变转变成自生磷灰石有关。综上所述,通过对烟囱状冷泉碳酸盐岩不同的磷和铁组分分析,发现在强渗漏条件下甲烷渗漏强度的改变会影响样品中铁结合态磷和自生磷灰石含量,更强的甲烷渗漏强度更有利于蓝铁矿和自生磷灰石的形成,从而对冷泉环境中的磷和铁循环产生影响。

    图  6  冷泉碳酸盐岩烟囱样品的晶质铁氧化物(FeOx2)和非晶质氧化铁含量(FeOx1)分别与铁结合态磷(PFe)的投点图
    图中红色点为冷泉碳酸盐岩烟囱内层样品,黑色点为冷泉碳酸盐岩烟囱外层样品。
    Figure  6.  The cross-plot of crystalline iron oxides (FeOx2) and amorphous iron oxide content (FeOx1) from cold seep carbonate chimney samples vs iron-bound phosphorus (PFe), respectively
    The red dots are seep carbonate chimney samples. The black dots are samples from the outer layers of seep carbonates.

    通过对南海东沙海域九龙甲烷礁site 3站位的冷泉碳酸盐岩烟囱进行矿物组成、碳氧同位素、碳和硫占比,以及不同铁组分和磷形态分析,确定了碳酸盐岩烟囱从外向内沉积过程中曾发生过强烈的、可能由天然气水合物分解导致的甲烷渗漏活动。但该甲烷渗漏活动并不稳定,且随着流体通路变窄甲烷渗漏活动增强。较强的甲烷渗漏活动会导致烟囱碳同位素值大幅负偏,氧同位素值轻微偏正,并会导致大量沉淀碳酸钙和黄铁矿的生成。在甲烷强渗漏条件下,烟囱内层明显富集铁结合态磷和自生磷灰石,说明更强的甲烷渗漏强度和更接近海底的环境有利于蓝铁矿和自生磷灰石的形成,进而影响冷泉环境中的磷和铁循环,但对于其中可能形成的蓝铁矿机制和微环境等还有待未来进一步研究。

    致谢:“海洋四号”科考船组织者、船员和科考人员在样品采集过程中给予的帮助。感谢审稿人提出的宝贵意见。

  • 图  1   胶州湾及邻区基岩地质简图

    陆区基岩岩性据山东省地质调查院[10]修改;胶州湾区基底岩性据李官保等[6]修改。

    Figure  1.   Sketched geological map of the basement rocks in Jiaozhou Bay and adjacent areas

    Modified after references [6,10].

    图  2   钻孔剖面构造与样品镜下特征

    a:胶州湾JZW1与QDQZ1钻孔剖面与取样位置示意图(据窦衍光等[9]修改);b:JZW1孔不同深度岩石镜下薄片特征,Kfs=钾长石,Mc=微斜长石,Pth=条纹长石,Bt=黑云母,Qtz=石英。

    Figure  2.   Sampling locations of borehole profile and photomicrographs of samples

    a: Profile and sampling locations of JZW1 and QDQZ1 boreholes in Jiaozhou Bay (modified after reference [9]); b: photomicrographs of rocks at different depths of JZW1 borehole. Kfs: K-feldspar; Mc: microcline; Pth: perthite; Bt: biotite; Qtz: quartz.

    图  3   JZW1与QDQZ1钻孔5件样品锆石U-Pb协和图、加权平均年龄及代表性锆石CL图

    Figure  3.   Concordia diagrams, weighted mean ages, and typical cathodoluminescene (CL) images of zircons from JZW1 core and QDQZ1 core in Jiaozhou Bay

    图  4   胶州湾早白垩世花岗岩与新元古代变花岗岩中锆石的Th/U比值

    Figure  4.   Th/U ratios of zircons from ther Early Cretaceous granite and Neoproterozoic metagranite in Jiaozhou Bay

    图  5   胶州湾早白垩世花岗岩与新元古代变花岗岩中锆石的稀土元素特征

    标准化数据为原始地幔值,据文献[20]。

    Figure  5.   Rare earth element distribution pattern of zircons from Early Cretaceous granite and Neoproterozoic metagranite in Jiaozhou Bay

    The primitive mantle values are from reference [20].

    图  6   锆石Ti温度计计算获得的胶州湾早白垩世花岗岩(a)与新元古代变花岗岩(b)锆石晶出的温度分布图

    Figure  6.   Ti-in-zircon thermometer results for the Early Cretaceous granite and Neoproterozoic metagranite in Jiaozhou Bay

    图  7   胶州湾早白垩世花岗岩与新元古代变花岗岩锆石来源岩浆属性判别

    底图据文献[40]。

    Figure  7.   Discriminant diagrams with continental and ocean crust zircon fields for zircons from Early Cretaceous granite and Neoproterozoic metagranite in Jiaozhou Bay

    Modified after reference [40].

    图  8   胶州湾早白垩世花岗岩与新元古代变花岗岩中锆石来源岩石类型判别图

    底图据文献[42]。

    Figure  8.   The fields of zircon compositions used as discriminants for different rocks types

    Modified after reference [42].

    1   胶州湾JZW1孔与QDQZ1孔样品锆石测年结果

    1   Zircon U-Pb dating results of samples from JZW1 core and QDQZ1 core in Jiaozhou Bay

    点 号 Th
    /10−6
    U
    /10−6
    Th/U 比 值 年 龄/Ma 谐和度*
    /%
    207Pb/206Pb ± 1σ 207Pb/235U ± 1σ 206Pb/238U ± 1σ 207Pb/206Pb ± 1σ 207Pb/235U ± 1σ 206Pb/238U ± 1σ
    JZW-01-01 669.7 229.7 2.7 1.4403 0.0361 0.12829 0.00169 0.08322 0.00179 778 10 906 15 1274 41 86
    JZW-01-02 360.3 296.9 1.2 1.29226 0.02745 0.13871 0.00211 0.06878 0.00111 837 12 842 12 891 33 99
    JZW-01-03 181.3 111.7 1.5 1.11424 0.0245 0.12849 0.00133 0.06523 0.0015 779 8 760 12 781 47 103
    JZW-01-04 332.3 395.9 0.8 1.06176 0.01795 0.11616 0.00123 0.06722 0.00116 708 7 735 9 844 35 96
    JZW-01-05 113.0 58.1 1.8 1.16269 0.03986 0.1312 0.00188 0.06609 0.0022 795 11 783 19 808 68 102
    JZW-01-06 402.5 263.9 1.4 1.07708 0.01994 0.11961 0.00134 0.06801 0.00124 728 8 742 10 868 37 98
    JZW-01-07 80.9 69.9 1.1 1.14929 0.03557 0.1294 0.00178 0.06811 0.00221 784 10 777 17 871 66 101
    JZW-01-08 287.2 225.1 1.2 1.12284 0.02266 0.12253 0.0013 0.06733 0.00135 745 7 764 11 847 41 98
    JZW-01-09 322.9 290.8 1.0 1.1426 0.01936 0.13163 0.00136 0.06661 0.0011 797 8 774 9 825 34 103
    JZW-01-10 303.5 309.3 0.9 1.25712 0.02953 0.14369 0.00255 0.06766 0.00108 865 14 827 13 857 33 105
    JZW-01-11 514.9 318.4 1.5 1.17837 0.02322 0.135 0.00191 0.06656 0.00126 816 11 791 11 823 39 103
    JZW-01-12 320.2 239.9 1.3 1.24712 0.03392 0.12463 0.00171 0.07067 0.00153 757 10 822 15 947 44 92
    JZW-01-13 626.9 402.6 1.4 1.17282 0.02055 0.13259 0.00185 0.06657 0.00096 803 11 788 10 824 30 102
    JZW-01-14 114.4 110.8 1.0 1.17701 0.02845 0.12999 0.00165 0.06834 0.00148 788 9 790 13 878 44 100
    JZW-01-15 236.7 207.2 1.0 1.14284 0.02036 0.13008 0.0018 0.06462 0.00125 788 10 774 10 761 40 102
    JZW-01-16 248.0 158.1 1.5 1.10722 0.03494 0.12474 0.00164 0.06784 0.00159 758 9 757 17 863 48 100
    JZW-01-17 544.4 389.4 1.3 1.17504 0.02037 0.13119 0.00193 0.06634 0.0011 795 11 789 10 816 34 101
    JZW-01-18 201.0 195.8 0.9 1.21819 0.02411 0.13051 0.00164 0.06686 0.0012 791 9 809 11 832 37 98
    JZW-01-19 202.1 185.9 1.0 1.04561 0.03018 0.12031 0.00167 0.06388 0.00145 732 10 727 15 737 47 101
    JZW-01-20 174.2 129.6 1.3 1.17847 0.03521 0.12686 0.0016 0.06758 0.00179 770 9 791 16 855 54 97
    JZW-01-21 731.5 293.6 2.4 1.16334 0.02313 0.13009 0.00162 0.06635 0.00108 788 9 784 11 817 34 101
    JZW-01-22 391.5 243.5 1.5 1.05473 0.01869 0.12302 0.00133 0.06475 0.00143 748 8 731 9 765 46 102
    JZW-01-23 941.0 567.3 1.6 1.10458 0.0197 0.12339 0.0014 0.06448 0.00094 750 8 756 10 757 31 99
    JZW-01-24 375.6 172.4 2.0 1.20271 0.02918 0.12569 0.00157 0.07023 0.00141 763 9 802 13 934 41 95
    JZW-01-25 220.1 212.9 1.0 1.15278 0.025 0.12685 0.00157 0.06575 0.00135 770 9 779 12 798 43 99
    JZW-01-26 224.3 278.6 0.8 1.14376 0.02252 0.13061 0.00151 0.06471 0.00118 791 9 774 11 764 38 102
    JZW-01-27 503.9 379.1 1.3 1.00595 0.02033 0.11154 0.00131 0.06527 0.00097 682 8 707 10 782 31 96
    JZW-01-28 283.3 291.5 0.9 1.16308 0.02477 0.13435 0.00192 0.065 0.0011 813 11 783 12 773 35 104
    JZW-01-29 266.5 181.5 1.4 1.19534 0.02468 0.13404 0.00216 0.06648 0.00107 811 12 798 11 821 33 102
    JZW-01-30 211.1 232.8 0.9 1.13833 0.01842 0.12606 0.00142 0.06625 0.00099 765 8 772 9 813 31 99
    JZW-02-01 143.0 204.9 0.6 1.19795 0.02529 0.13154 0.00204 0.06637 0.00151 797 12 800 12 817 47 100
    JZW-02-02 176.1 206.8 0.8 1.07629 0.02166 0.1285 0.00163 0.06131 0.00142 779 9 742 11 649 49 105
    JZW-02-03 52.9 36.8 1.3 1.13787 0.03702 0.12761 0.00195 0.06435 0.00234 774 11 772 18 752 75 100
    JZW-02-04 120.8 140.7 0.8 1.13268 0.02611 0.13418 0.0021 0.06163 0.00153 812 12 769 12 660 52 106
    JZW-02-05 103.4 236.8 0.4 1.08885 0.02295 0.11893 0.00151 0.06538 0.0012 724 9 748 11 786 38 97
    JZW-02-06 106.5 70.5 1.4 1.23326 0.04417 0.13935 0.00212 0.06199 0.00176 841 12 816 20 673 60 103
    JZW-02-07 176.4 197.4 0.8 1.11315 0.02228 0.12891 0.00169 0.06353 0.00107 782 10 760 11 725 35 103
    JZW-02-08 187.0 184.8 0.9 1.12112 0.0261 0.12631 0.00134 0.06359 0.0011 767 8 764 13 727 36 100
    JZW-02-09 145.8 97.3 1.4 1.21582 0.03101 0.13081 0.00142 0.06633 0.0016 792 8 808 14 816 50 98
    JZW-02-10 155.1 109.6 1.3 1.11421 0.02713 0.12305 0.00133 0.06637 0.00185 748 8 760 13 817 57 98
    JZW-02-11 151.5 118.2 1.2 1.21528 0.0277 0.12958 0.00128 0.06747 0.00158 785 7 808 13 852 48 97
    JZW-02-12 53.4 37.2 1.4 1.24489 0.03938 0.13882 0.00247 0.06637 0.00214 838 14 821 18 817 66 102
    JZW-02-13 174.3 236.7 0.7 1.13792 0.02494 0.12703 0.0016 0.0662 0.00123 771 9 772 12 812 38 100
    JZW-02-14 231.9 120.5 1.8 1.15105 0.02571 0.12865 0.00215 0.06579 0.00135 780 12 778 12 799 42 100
    JZW-02-15 76.6 61.9 1.2 1.25943 0.03937 0.13147 0.0021 0.07087 0.00232 796 12 828 18 953 65 96
    JZW-02-16 147.1 146.6 0.9 1.19843 0.03005 0.13076 0.00198 0.06568 0.00175 792 11 800 14 795 55 99
    JZW-02-17 98.2 66.3 1.4 1.14363 0.03052 0.13033 0.00162 0.06363 0.00179 790 9 774 14 728 59 102
    JZW-02-18 246.0 311.2 0.7 1.14949 0.02042 0.12832 0.00171 0.06507 0.00094 778 10 777 10 776 30 100
    JZW-02-19 244.6 264.8 0.9 1.1237 0.02198 0.1273 0.00178 0.06603 0.00126 772 10 765 11 806 39 101
    JZW-02-20 116.3 111.2 1.0 1.1599 0.0233 0.12832 0.00155 0.06648 0.00132 778 9 782 11 821 41 99
    JZW-02-21 264.1 292.1 0.8 1.10176 0.02056 0.12749 0.00171 0.06503 0.00115 774 10 754 10 774 37 103
    JZW-02-22 124.1 111.3 1.0 1.13004 0.029 0.13189 0.00168 0.06471 0.00174 799 10 768 14 764 56 104
    JZW-02-23 95.1 106.6 0.8 1.13791 0.02724 0.12635 0.00188 0.06567 0.00172 767 11 772 13 795 54 99
    JZW-02-24 442.2 512.8 0.8 1.07005 0.02297 0.11248 0.0016 0.06927 0.00118 687 9 739 11 906 35 93
    JZW-02-25 80.0 56.0 1.3 1.13451 0.04302 0.12697 0.00129 0.06809 0.00239 771 7 770 20 870 71 100
    JZW-02-26 178.1 185.0 0.9 1.12234 0.02397 0.12189 0.00162 0.06634 0.00125 741 9 764 11 816 39 97
    JZW-02-27 586.6 477.5 1.1 1.10374 0.01803 0.11915 0.00136 0.06827 0.00095 726 8 755 9 876 29 96
    JZW-02-28 265.7 373.1 0.7 1.1319 0.02094 0.12604 0.00154 0.06648 0.00109 765 9 769 10 821 34 99
    JZW-02-29 101.9 160.6 0.6 1.11472 0.02824 0.12306 0.0012 0.06517 0.00153 748 7 760 14 779 48 98
    JZW-02-30 190.5 279.3 0.6 1.1677 0.02645 0.13415 0.00204 0.06651 0.0011 812 12 786 12 822 34 103
    JZW-03-01 209.4 156.8 1.3 0.13707 0.00816 0.0191 0.00035 0.05218 0.003 122 2 130 7 292 126 94
    JZW-03-02 404.7 216.9 1.8 0.13236 0.00634 0.01838 0.00027 0.05076 0.00233 117 2 126 6 229 103 93
    JZW-03-03 175.2 147.5 1.1 0.12284 0.00721 0.01984 0.00037 0.04611 0.00262 127 2 118 7 2 131 108
    JZW-03-04 325.1 236.8 1.3 0.11865 0.00672 0.01831 0.00036 0.04819 0.00266 117 2 114 6 107 125 103
    JZW-03-05 257.4 195.6 1.2 0.23283 0.00754 0.02016 0.00027 0.08039 0.00261 129 2 213 6 1206 63 61
    JZW-03-06 113.8 112.5 1.0 0.14019 0.00809 0.01943 0.0003 0.05198 0.00291 124 2 133 7 283 123 93
    JZW-03-07 243.4 109.2 2.2 0.1479 0.00998 0.02008 0.00045 0.05666 0.00359 128 3 140 9 477 134 91
    JZW-03-08 93.0 58.1 1.5 0.18842 0.01191 0.01843 0.0005 0.07909 0.00486 118 3 175 10 1174 117 67
    JZW-03-09 290.6 250.8 1.1 0.12809 0.00597 0.01882 0.00036 0.04727 0.00215 120 2 122 5 62 105 98
    JZW-03-10 183.0 161.3 1.1 0.11894 0.00682 0.01891 0.00032 0.04861 0.00269 121 2 114 6 128 125 106
    JZW-03-11 180.5 88.6 2.0 0.14062 0.0085 0.01866 0.0003 0.04904 0.00291 119 2 134 8 149 133 89
    JZW-03-12 589.2 375.6 1.5 0.22686 0.00804 0.02045 0.00035 0.0821 0.00275 131 2 208 7 1247 64 63
    JZW-03-13 233.1 183.2 1.2 0.12703 0.00742 0.01964 0.0003 0.04454 0.00252 125 2 121 7 -1 52 103
    JZW-03-14 292.4 199.7 1.4 0.11298 0.00548 0.01839 0.0003 0.04497 0.00211 117 2 109 5 -1 53 107
    JZW-03-15 584.5 267.7 2.1 0.12041 0.00418 0.01854 0.0003 0.04807 0.00173 118 2 115 4 101 83 103
    JZW-03-16 302.5 230.0 1.2 0.12295 0.00583 0.01933 0.00031 0.0473 0.00221 123 2 118 5 63 108 104
    JZW-03-17 196.7 168.0 1.1 0.13463 0.0081 0.01889 0.00032 0.04908 0.00283 121 2 128 7 150 130 95
    JZW-03-18 54.1 48.1 1.1 0.11902 0.01272 0.01955 0.0008 0.04414 0.00522 125 5 114 12 -1 165 110
    JZW-03-19 108.5 44.9 2.3 0.21171 0.01382 0.0181 0.00045 0.08062 0.00519 116 3 195 12 1211 122 59
    JZW-03-20 53.5 54.0 0.9 0.10579 0.00879 0.01824 0.00048 0.0405 0.00355 117 3 102 8 -1 108 115
    JZW-03-21 245.9 193.0 1.2 0.13134 0.0081 0.01834 0.00029 0.05187 0.00306 117 2 125 7 278 130 94
    JZW-03-22 335.2 216.3 1.4 0.14951 0.00538 0.01866 0.00024 0.05656 0.00199 119 2 141 5 474 76 84
    JZW-03-23 395.9 260.0 1.4 0.14816 0.00757 0.01937 0.00036 0.05778 0.00288 124 2 140 7 521 106 89
    JZW-03-24 607.2 403.9 1.4 0.13661 0.00619 0.01933 0.00031 0.05374 0.00224 123 2 130 6 359 92 95
    JZW-03-25 224.4 147.7 1.5 0.12756 0.0078 0.01859 0.00031 0.05088 0.00297 119 2 122 7 235 129 98
    JZW-03-26 593.3 365.9 1.5 0.14599 0.00583 0.01948 0.00034 0.05438 0.00186 124 2 138 5 386 75 90
    JZW-03-27 348.8 226.7 1.4 0.1106 0.0049 0.01843 0.00024 0.04237 0.00185 118 2 107 4 -1 98 110
    JZW-03-28 234.7 173.2 1.3 0.10853 0.00522 0.01859 0.00033 0.04466 0.00214 119 2 105 5 -1 39 113
    JZW-03-29 401.6 231.2 1.6 0.12443 0.00626 0.01825 0.00034 0.04847 0.00237 117 2 119 6 121 111 98
    JZW-03-30 139.2 92.7 1.4 0.22629 0.01376 0.01978 0.00036 0.08446 0.00495 126 2 207 11 1302 110 61
    JZW-04-01 288.8 215.9 1.2 1.27024 0.0335 0.1281 0.00182 0.0708 0.00167 777 10 833 15 951 47 93
    JZW-04-02 726.9 377.5 1.8 1.08527 0.01967 0.12201 0.00135 0.06416 0.00107 742 8 746 10 746 35 99
    JZW-04-03 883.8 480.5 1.7 1.14052 0.02766 0.13159 0.00205 0.06256 0.00105 797 12 773 13 692 36 103
    JZW-04-04 923.2 624.1 1.4 1.09263 0.02082 0.12658 0.0017 0.0634 0.00101 768 10 750 10 721 33 102
    JZW-04-05 851.7 597.6 1.3 1.12713 0.01547 0.13124 0.00161 0.06269 0.00085 795 9 766 7 697 29 104
    JZW-04-06 2572.6 1412.2 1.7 0.76492 0.01399 0.08792 0.00134 0.06162 0.00076 543 8 577 8 660 26 94
    JZW-04-07 398.1 308.5 1.2 1.15906 0.02353 0.13774 0.00203 0.06211 0.00105 832 11 782 11 677 36 106
    JZW-04-08 144.2 102.7 1.3 1.17651 0.04646 0.11953 0.00241 0.0754 0.00285 728 14 790 22 1078 74 92
    JZW-04-09 477.7 321.9 1.4 1.08343 0.02055 0.12786 0.00163 0.06229 0.00116 776 9 745 10 683 39 104
    JZW-04-10 184.0 176.6 1.0 1.15229 0.02225 0.12885 0.00183 0.06392 0.00113 781 10 778 11 738 37 100
    JZW-04-11 236.4 222.8 1.0 1.13853 0.0245 0.12944 0.0017 0.06391 0.00123 785 10 772 12 738 40 102
    JZW-04-12 559.8 464.0 1.1 1.12519 0.02579 0.12851 0.00115 0.06344 0.00102 779 7 765 12 722 34 102
    JZW-04-13 1466.6 900.6 1.5 0.83189 0.01283 0.08931 0.00072 0.06424 0.0009 551 4 615 7 749 29 90
    JZW-04-14 611.2 400.2 1.4 1.16212 0.02293 0.12807 0.00113 0.06553 0.00121 777 6 783 11 790 38 99
    JZW-04-15 513.2 412.5 1.2 2.03348 0.07396 0.13809 0.00403 0.10331 0.00289 834 23 1127 25 1684 51 74
    JZW-04-16 988.6 810.0 1.2 1.07833 0.01777 0.12206 0.0013 0.06346 0.0009 742 7 743 9 723 30 100
    JZW-04-17 482.8 342.3 1.3 1.17701 0.02459 0.1298 0.00179 0.06674 0.00122 787 10 790 11 829 38 100
    JZW-04-18 135.2 109.2 1.2 1.09585 0.04017 0.12707 0.00153 0.06101 0.00167 771 9 751 19 639 58 103
    JZW-04-19 1159.2 854.2 1.3 0.93626 0.01841 0.10705 0.00151 0.06294 0.00095 656 9 671 10 705 32 98
    JZW-04-20 1207.3 841.4 1.3 1.10951 0.02476 0.1305 0.00278 0.06191 0.00094 791 16 758 12 670 32 104
    JZW-04-21 589.9 359.8 1.6 1.11879 0.02119 0.12444 0.00116 0.06445 0.00099 756 7 762 10 756 32 99
    JZW-04-22 478.1 344.8 1.4 1.23183 0.02607 0.12742 0.00136 0.07067 0.00154 773 8 815 12 947 44 95
    JZW-04-23 477.3 423.7 1.1 1.16814 0.0187 0.13019 0.00155 0.06504 0.00113 789 9 786 9 775 36 100
    JZW-04-24 312.3 308.6 1.0 1.26999 0.02832 0.12659 0.0017 0.07127 0.00142 768 10 832 13 964 40 92
    JZW-04-25 889.6 435.8 2.0 1.25961 0.02825 0.12675 0.00166 0.07326 0.00139 769 10 828 13 1020 38 93
    JZW-04-26 1230.5 715.8 1.3 0.83103 0.01937 0.08349 0.00143 0.07239 0.00118 517 9 614 11 996 33 84
    JZW-04-27 827.7 495.9 1.6 1.11584 0.02 0.11736 0.00112 0.06555 0.00093 715 6 761 10 791 29 94
    JZW-04-28 1194.1 822.9 1.4 0.88285 0.01663 0.09454 0.00107 0.0657 0.00106 582 6 643 9 796 33 91
    JZW-04-29 1481.5 1151.4 1.3 0.95564 0.01789 0.09343 0.00111 0.07331 0.00117 576 7 681 9 1022 32 85
    JZW-04-30 297.9 251.5 1.1 1.18307 0.02795 0.12986 0.0015 0.06786 0.00139 787 9 793 13 863 42 99
    JZW-05-01 73.3 51.0 1.3 0.12365 0.0092 0.01843 0.00042 0.0501 0.00378 118 3 118 8 199 167 100
    JZW-05-02 145.4 135.1 1.0 0.14137 0.00577 0.01899 0.00039 0.05226 0.00205 121 2 134 5 296 87 90
    JZW-05-03 381.3 269.1 1.3 0.14914 0.00563 0.01887 0.00032 0.05997 0.00244 121 2 141 5 602 86 86
    JZW-05-04 259.5 163.9 1.5 0.12501 0.00582 0.0182 0.00027 0.04941 0.00238 116 2 120 5 166 109 97
    JZW-05-05 230.3 175.6 1.2 0.12433 0.00461 0.01836 0.00025 0.05034 0.00297 117 2 119 4 210 131 98
    JZW-05-06 203.7 172.7 1.1 0.12457 0.00579 0.01812 0.00028 0.04843 0.00232 116 2 119 5 119 109 97
    JZW-05-07 200.9 173.7 1.1 0.12748 0.00545 0.01929 0.0003 0.0495 0.00229 123 2 122 5 170 105 101
    JZW-05-08 428.9 241.1 1.6 0.12047 0.00566 0.01825 0.00023 0.04533 0.00215 117 1 116 5 -1 73 101
    JZW-05-09 207.5 163.7 1.2 0.15246 0.0088 0.0189 0.00027 0.05746 0.00346 121 2 144 8 508 127 84
    JZW-05-10 225.0 177.4 1.2 0.12733 0.00584 0.01897 0.0003 0.04729 0.0023 121 2 122 5 63 112 99
    JZW-05-11 796.7 348.8 2.1 0.12137 0.00593 0.01807 0.0002 0.04818 0.00245 115 1 116 5 107 116 99
    JZW-05-12 168.9 108.7 1.4 0.11255 0.00766 0.01861 0.00043 0.0481 0.00336 119 3 108 7 103 158 110
    JZW-05-13 40.4 35.4 1.1 0.19981 0.01694 0.01882 0.0005 0.06945 0.00722 120 3 185 14 911 201 65
    JZW-05-14 67.0 51.1 1.2 0.12462 0.01016 0.01838 0.00041 0.05326 0.00418 117 3 119 9 339 169 98
    JZW-05-15 455.7 247.6 1.7 0.25707 0.01112 0.01887 0.00029 0.09185 0.00381 121 2 232 9 1463 77 52
    JZW-05-16 459.5 305.1 1.4 0.23588 0.00908 0.01816 0.00022 0.09596 0.00375 116 1 215 7 1546 72 54
    JZW-05-17 300.4 205.5 1.3 0.12443 0.0061 0.01832 0.00031 0.04721 0.00236 117 2 119 6 59 115 98
    JZW-05-18 185.6 167.9 1.0 0.12405 0.0059 0.01855 0.00027 0.04886 0.00239 118 2 119 5 140 111 99
    JZW-05-19 153.0 145.8 1.0 0.1203 0.00804 0.01898 0.00033 0.04433 0.00296 121 2 115 7 -1 64 105
    JZW-05-20 169.5 158.1 1.0 0.15622 0.00774 0.01857 0.00038 0.06266 0.00317 119 2 147 7 696 104 81
    JZW-05-21 228.2 139.2 1.5 0.12757 0.00807 0.01899 0.0003 0.04665 0.00297 121 2 122 7 30 146 99
    JZW-05-22 148.4 133.4 1.0 0.1213 0.0068 0.01973 0.00046 0.04619 0.00268 126 3 116 6 7 134 109
    JZW-05-23 330.6 228.0 1.3 0.30474 0.01123 0.0174 0.00034 0.13388 0.00489 111 2 270 9 2149 62 41
    JZW-05-24 226.6 179.5 1.1 0.13651 0.00658 0.01818 0.00028 0.052 0.00259 116 2 130 6 285 110 89
    JZW-05-25 202.2 165.4 1.1 0.13994 0.00529 0.0181 0.0003 0.05257 0.00199 116 2 133 5 309 84 87
    JZW-05-26 337.7 179.1 1.7 0.12719 0.00525 0.01819 0.00023 0.04974 0.00226 116 1 122 5 182 102 95
    JZW-05-27 277.8 201.1 1.3 0.14816 0.00727 0.0186 0.00028 0.05553 0.00278 119 2 140 6 432 108 85
    JZW-05-28 159.6 130.6 1.1 0.1291 0.00634 0.018 0.0003 0.05429 0.00275 115 2 123 6 382 110 93
    JZW-05-29 581.6 381.2 1.4 0.12592 0.00403 0.01865 0.00024 0.04801 0.00164 119 1 120 4 99 79 99
    JZW-05-30 274.3 147.2 1.7 0.26374 0.0108 0.02078 0.0004 0.09157 0.0038 133 3 238 9 1458 77 56
    *谐和度 =(206Pb/ 238U age×100)/(207Pb/206Pb age)
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    2   胶州湾JZW1孔与QDQZ1孔样品锆石微量元素测试结果

    2   Trace element compositions of zircons from JZW1 core and QDQZ1 core in Jiaozhou Bay 10−6

    点 号 La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ti
    JZW-01-01 1018.09 2075.51 209.84 700.39 123.60 7.21 106.09 17.29 148.03 48.66 230.11 47.25 446.87 96.28 8052.23 24.80
    JZW-01-02 3.64 66.44 0.93 5.63 4.52 1.14 21.80 7.36 96.28 38.25 198.57 42.76 412.08 87.53 9254.33 3.41
    JZW-01-03 4.53 87.43 1.06 7.26 8.63 3.12 45.14 15.05 191.01 74.22 368.59 74.11 665.69 137.95 7046.69 14.24
    JZW-01-04 0.24 55.89 0.13 1.63 4.57 1.11 30.39 11.65 161.82 67.53 360.79 79.61 757.69 162.57 10077.28 48.92
    JZW-01-05 0.02 73.03 0.25 4.05 6.89 2.98 36.12 11.38 147.00 57.44 276.73 55.21 494.19 104.33 6370.91 19.33
    JZW-01-06 0.00 58.25 0.08 1.73 3.55 1.25 20.08 6.89 88.58 35.00 177.06 38.18 360.21 78.81 8838.92 3.16
    JZW-01-07 0.00 37.76 0.09 1.47 3.56 1.07 19.99 6.74 86.21 34.30 173.22 36.87 346.69 74.27 8095.71 8.04
    JZW-01-08 0.01 55.77 0.09 1.46 3.31 1.13 19.06 6.56 86.20 34.44 177.99 38.53 372.08 80.12 8737.96 2.91
    JZW-01-09 0.02 71.61 0.08 1.71 4.07 0.78 25.13 9.00 119.12 47.61 245.09 52.46 491.79 102.57 9632.82 3.44
    JZW-01-10 0.01 42.09 0.12 2.29 5.82 1.64 32.21 11.55 150.67 61.01 309.88 67.80 643.55 137.84 9143.00 1.85
    JZW-01-11 0.01 75.99 0.14 2.13 4.69 1.54 26.76 8.72 112.62 44.97 230.28 48.87 468.99 100.49 8474.57 4.47
    JZW-01-12 0.02 57.95 0.08 1.66 3.48 1.32 20.43 6.75 91.29 36.44 190.87 41.86 411.42 90.22 8605.37 5.45
    JZW-01-13 0.00 82.33 0.08 1.76 4.73 1.63 29.24 10.17 136.52 54.45 286.03 61.66 594.76 128.63 9000.23 3.57
    JZW-01-14 3.73 54.24 1.23 6.38 3.49 0.54 15.33 5.38 75.17 31.17 166.90 36.58 350.50 75.75 10111.06 4.10
    JZW-01-15 0.02 50.48 0.09 1.47 3.27 1.21 20.24 6.70 88.56 36.79 195.86 44.65 436.12 98.56 8698.54 3.72
    JZW-01-16 0.01 59.89 0.11 2.09 4.00 1.43 23.11 7.74 98.55 38.13 186.74 39.06 354.25 75.12 8340.87 7.31
    JZW-01-17 0.00 62.88 0.08 1.30 3.43 1.23 24.48 8.60 111.23 43.86 222.51 47.91 454.96 95.76 9492.71 3.99
    JZW-01-18 2.17 58.68 1.10 5.52 3.21 0.55 17.41 6.70 94.49 39.13 209.79 45.88 431.31 88.85 10484.49 3.68
    JZW-01-19 9.33 81.49 4.22 20.28 8.71 1.83 26.68 8.05 104.69 41.82 221.93 49.04 479.65 106.59 8607.39 4.14
    JZW-01-20 3.07 59.16 0.93 4.75 3.76 1.05 19.55 6.73 90.32 36.51 186.64 39.91 376.43 79.29 9124.39 6.07
    JZW-01-21 0.03 117.63 0.24 4.12 8.02 3.09 43.17 13.51 169.87 65.16 320.43 66.85 622.62 131.89 7828.62 7.20
    JZW-01-22 0.11 68.52 0.12 2.01 4.31 1.69 24.70 8.02 106.18 42.30 221.71 47.93 465.41 101.50 8230.45 4.99
    JZW-01-23 0.00 85.87 0.10 1.74 5.18 1.61 31.95 11.21 146.16 57.07 284.68 60.24 562.62 118.09 9432.92 2.15
    JZW-01-24 0.07 95.21 0.16 2.87 5.60 2.24 31.88 10.55 133.43 50.45 251.83 51.79 471.84 99.21 8692.12 9.84
    JZW-01-25 0.00 64.60 0.07 1.56 3.49 1.27 21.26 7.45 101.75 42.06 228.92 50.94 500.73 111.57 8713.45 4.53
    JZW-01-26 0.00 62.96 0.05 1.33 3.70 1.18 23.70 8.68 119.98 51.82 284.44 64.26 633.78 141.76 9036.02 3.37
    JZW-01-27 0.03 61.97 0.09 1.71 4.02 1.28 22.04 7.45 99.01 39.34 206.82 46.56 459.51 102.76 8961.60 3.52
    JZW-01-28 0.00 67.75 0.06 1.50 4.05 1.26 24.60 8.84 121.21 50.59 272.18 60.42 592.67 131.61 8922.28 4.10
    JZW-01-29 0.14 78.17 0.17 2.48 4.85 1.74 26.54 8.75 112.95 45.67 234.12 51.00 487.63 107.25 8098.04 7.91
    JZW-01-30 0.00 62.79 0.08 1.48 3.62 1.23 22.85 7.66 105.86 45.45 249.06 57.14 563.07 126.76 8709.09 4.13
    JZW-02-01 0.12 49.71 0.08 1.16 4.18 0.21 29.04 10.74 143.35 55.56 265.62 51.69 450.04 90.98 7097.15 2.46
    JZW-02-02 0.00 54.57 0.06 1.46 4.48 0.21 29.53 11.22 144.10 54.76 257.86 49.28 412.54 81.35 7062.30 1.82
    JZW-02-03 0.01 29.60 0.08 1.47 2.48 0.99 13.88 4.32 55.05 21.00 105.16 21.79 198.94 43.30 7472.35 8.20
    JZW-02-04 0.08 56.37 0.10 1.64 4.47 0.24 31.18 11.15 144.26 54.62 261.13 50.51 433.52 87.24 6949.59 3.17
    JZW-02-05 0.10 26.40 0.15 1.19 2.83 0.17 19.18 7.66 102.23 40.07 197.63 41.64 349.63 70.43 7251.57 2.46
    JZW-02-06 0.04 80.86 0.19 2.99 5.39 1.89 31.13 9.96 125.22 48.56 230.43 46.23 407.81 86.21 6861.10 7.14
    JZW-02-07 0.01 53.26 0.08 1.56 4.67 0.19 30.05 10.95 141.34 53.34 255.35 48.55 412.08 81.10 7234.16 2.49
    JZW-02-08 3.24 70.54 1.93 9.19 7.42 0.29 34.90 12.14 152.99 56.94 266.36 51.28 436.50 87.27 6963.91 3.83
    JZW-02-09 0.02 53.49 0.09 1.86 3.54 1.20 19.86 6.51 85.12 33.43 167.60 34.80 324.84 69.19 8312.15 5.89
    JZW-02-10 0.01 59.63 0.09 2.08 4.08 1.24 23.45 7.84 105.58 42.95 218.20 46.16 425.48 91.52 8312.61 6.59
    JZW-02-11 0.02 45.00 0.14 2.16 4.73 2.02 25.27 8.65 114.73 46.81 242.34 52.62 486.04 108.19 7576.30 9.18
    JZW-02-12 0.73 45.27 0.46 3.62 4.11 1.29 19.95 5.83 69.88 25.79 123.87 24.76 223.84 48.14 6937.23 11.70
    JZW-02-13 0.00 50.18 0.06 1.21 4.04 0.21 29.51 11.26 146.37 55.15 261.19 50.40 423.45 83.00 7406.24 1.82
    JZW-02-14 6.35 81.64 1.98 10.65 6.38 2.11 29.91 9.41 118.18 44.94 219.71 45.28 402.97 83.96 7588.86 7.56
    JZW-02-15 3.21 43.47 0.99 5.55 4.07 1.38 19.20 6.04 77.30 30.12 151.52 31.66 289.98 63.64 7662.10 8.45
    JZW-02-16 26.42 119.13 9.71 41.41 17.34 0.50 55.60 17.41 208.93 76.12 353.16 67.01 560.25 113.03 6822.89 4.33
    JZW-02-17 0.02 40.62 0.11 1.72 3.48 0.88 20.23 6.56 84.62 32.75 165.76 34.95 319.99 69.05 8300.78 8.53
    JZW-02-18 0.08 59.59 0.07 1.48 5.85 0.24 41.48 15.94 208.23 77.29 365.65 69.62 580.41 112.75 8186.50 3.06
    JZW-02-19 0.01 61.01 0.08 1.55 5.77 0.25 36.08 13.43 172.19 65.43 304.10 58.78 492.83 96.28 7474.52 1.80
    JZW-02-20 0.65 42.00 0.28 1.72 2.36 0.38 13.99 5.16 70.93 29.28 155.00 32.71 303.13 63.37 10215.00 4.03
    JZW-02-21 0.00 63.14 0.05 1.38 4.74 0.22 35.23 13.32 173.73 64.99 306.88 59.05 498.67 95.97 7313.24 3.18
    JZW-02-22 1.03 50.82 0.37 2.32 3.02 0.68 16.83 5.89 80.94 33.30 173.22 37.84 351.89 74.92 9649.28 4.31
    JZW-02-23 0.00 51.93 0.06 1.36 4.26 0.26 26.27 9.67 124.41 47.61 229.59 45.07 396.13 81.49 6668.52 3.00
    JZW-02-24 0.80 89.10 0.56 4.90 10.86 0.48 68.15 24.09 302.13 112.23 522.04 99.72 843.87 164.92 8024.29 6.83
    JZW-02-25 0.01 35.16 0.10 1.65 4.04 0.96 19.71 6.28 78.92 30.46 151.88 31.68 290.90 62.72 7941.94 12.87
    JZW-02-26 38.50 155.69 10.22 37.82 12.50 0.46 42.86 14.29 173.41 65.56 308.35 59.79 508.39 100.30 6934.72 22.54
    JZW-02-27 0.29 127.12 0.31 3.27 8.96 0.45 60.46 22.17 280.88 102.53 481.57 91.50 766.31 149.40 8067.98 7.76
    JZW-02-28 0.21 64.97 0.12 1.53 5.48 0.23 39.60 15.56 201.38 77.04 365.15 70.63 591.81 113.93 8365.11 2.09
    JZW-02-29 0.01 35.88 0.04 0.57 1.75 0.29 13.29 5.15 72.82 30.17 158.35 33.62 310.18 64.92 11029.09 2.31
    JZW-02-30 0.00 56.16 0.07 1.33 4.82 0.19 34.43 13.18 172.56 64.93 307.48 59.72 508.34 99.33 8141.57 2.34
    JZW-03-01 104.58 321.33 23.95 80.32 15.96 0.64 28.99 8.61 109.18 44.77 239.64 52.30 484.92 100.55 9688.99 4.36
    JZW-03-02 0.17 92.80 0.09 1.12 2.07 0.19 14.47 5.62 85.95 37.98 214.24 48.46 461.03 97.27 10035.95 6.53
    JZW-03-03 0.13 70.98 0.10 1.24 2.64 0.26 17.30 6.96 104.17 47.07 268.41 61.68 593.90 127.52 9774.50 2.58
    JZW-03-04 0.01 98.59 0.04 1.01 1.98 0.21 14.27 6.03 92.90 43.36 256.37 60.48 597.67 130.00 10018.27 3.09
    JZW-03-05 0.09 89.84 0.06 1.13 2.29 0.26 14.72 6.07 88.06 39.73 222.29 50.09 487.60 103.91 10119.18 4.46
    JZW-03-06 0.05 45.01 0.06 0.87 1.91 0.18 13.79 5.50 79.98 36.08 201.29 45.99 438.94 93.56 9703.64 2.70
    JZW-03-07 0.02 80.63 0.18 3.09 4.85 0.99 24.50 8.08 95.26 35.42 169.66 33.79 297.43 60.20 7259.57 11.75
    JZW-03-08 0.04 78.62 0.37 5.57 8.73 1.62 37.99 10.92 127.69 47.43 216.18 41.99 370.15 76.53 6966.70 14.47
    JZW-03-09 0.09 104.75 0.07 0.97 2.19 0.25 14.56 6.05 92.44 42.85 252.27 59.73 592.20 129.95 10222.49 2.08
    JZW-03-10 0.01 92.08 0.06 0.96 2.81 0.30 18.74 7.65 112.83 50.91 288.99 65.43 629.40 134.46 9641.73 3.19
    JZW-03-11 0.01 83.68 0.13 2.59 5.52 1.02 30.14 9.80 122.45 44.35 208.63 40.60 348.34 69.62 7749.77 8.00
    JZW-03-12 0.04 136.71 0.12 1.75 3.31 0.68 21.72 8.60 127.95 61.84 383.17 95.65 1008.50 233.21 10210.68 5.50
    JZW-03-13 0.00 75.65 0.06 0.82 2.13 0.26 13.70 5.34 79.10 34.98 195.56 44.43 431.49 94.01 10363.22 3.19
    JZW-03-14 0.02 89.77 0.06 1.18 2.43 0.28 17.18 6.76 97.48 41.92 227.04 49.90 466.21 98.12 9815.08 4.03
    JZW-03-15 0.06 190.42 0.26 3.77 9.70 0.84 54.86 18.67 236.86 91.56 440.76 87.61 767.10 150.77 8964.54 4.95
    JZW-03-16 1.43 90.49 0.34 1.70 2.14 0.22 13.44 5.59 82.34 37.45 216.11 50.14 488.85 106.98 10220.57 3.40
    JZW-03-17 4.80 98.48 1.01 3.56 2.47 0.27 16.52 6.73 102.95 48.27 282.36 65.59 640.51 139.90 9911.09 3.61
    JZW-03-18 0.01 42.55 0.14 2.43 4.70 1.20 21.86 6.59 79.73 29.83 143.74 28.81 259.07 55.50 6884.80 13.66
    JZW-03-19 0.03 108.27 0.33 5.10 7.63 2.09 34.67 10.94 134.54 50.07 239.05 46.97 409.98 87.56 6104.11 16.06
    JZW-03-20 7.60 64.65 2.61 11.79 5.66 0.98 21.66 6.59 78.88 29.77 143.38 29.30 262.64 55.86 7529.97 9.35
    JZW-03-21 0.01 85.44 0.06 0.98 1.91 0.19 12.82 5.21 80.42 36.89 212.57 49.44 479.75 103.86 10154.03 3.37
    JZW-03-22 0.00 83.09 0.07 0.98 2.29 0.18 13.57 5.75 82.83 36.79 203.28 45.00 422.53 89.92 9802.70 3.11
    JZW-03-23 0.04 108.79 0.09 1.43 3.57 0.47 22.77 8.81 123.24 53.67 293.87 65.27 623.74 131.52 9961.44 4.68
    JZW-03-24 0.01 128.19 0.09 0.87 2.12 0.29 14.70 6.02 91.49 44.93 274.41 67.41 681.80 153.00 10502.97 3.76
    JZW-03-25 0.01 82.09 0.17 2.68 5.51 0.38 33.71 12.65 176.33 71.31 367.87 76.47 677.36 136.72 9158.01 3.31
    JZW-03-26 0.01 108.55 0.07 0.84 1.59 0.23 12.04 5.03 78.54 37.91 232.18 55.86 564.77 126.53 10370.33 2.68
    JZW-03-27 0.01 90.35 0.06 0.86 2.02 0.19 13.97 5.58 83.02 37.64 212.50 47.88 453.09 96.84 9747.43 3.12
    JZW-03-28 0.11 84.86 0.08 1.17 2.54 0.29 15.95 6.77 99.04 43.56 240.53 54.01 509.62 108.80 9936.16 3.82
    JZW-03-29 0.01 124.13 0.10 1.60 3.97 0.29 25.34 10.03 142.58 60.07 316.10 67.22 602.16 123.45 9159.22 4.12
    JZW-03-30 0.00 69.24 0.13 2.30 5.18 0.72 28.86 10.07 125.74 47.12 216.98 42.22 350.25 68.20 8256.95 6.90
    JZW-04-01 10.98 133.28 4.70 21.88 11.75 1.25 49.49 16.43 206.46 80.27 385.05 77.39 679.07 139.45 8267.47 3.90
    JZW-04-02 11.37 156.57 5.38 24.31 14.34 1.21 57.07 18.21 223.35 82.16 383.42 73.46 624.56 123.17 8519.84 4.16
    JZW-04-03 0.02 124.92 0.13 2.52 6.96 0.97 49.70 17.37 220.00 82.82 388.07 75.80 654.74 129.38 8831.18 3.57
    JZW-04-04 0.05 107.17 0.07 1.29 3.54 0.43 25.77 9.86 141.61 60.62 328.48 72.77 687.68 147.77 10592.43 4.56
    JZW-04-05 0.01 175.29 0.16 3.31 9.97 1.26 70.30 24.51 310.94 118.32 558.88 109.82 954.95 190.59 8696.51 3.47
    JZW-04-06 2.31 233.28 0.74 4.43 8.15 0.76 57.73 22.02 301.46 125.68 655.73 141.12 1296.06 267.82 10471.40 16.71
    JZW-04-07 0.01 79.72 0.07 1.84 6.97 0.87 47.42 17.71 234.54 93.87 460.06 93.58 824.40 166.35 8049.02 2.74
    JZW-04-08 0.12 54.22 0.11 2.01 3.96 1.24 19.43 6.08 74.45 28.85 143.82 30.37 283.96 61.46 8116.11 6.03
    JZW-04-09 0.06 118.87 0.15 2.85 8.53 1.12 53.97 19.01 243.26 91.73 440.27 87.45 756.82 152.46 8183.57 6.42
    JZW-04-10 1.10 50.78 0.35 2.35 2.71 0.63 15.56 5.80 81.66 34.90 192.04 45.68 419.89 91.51 9954.15 2.27
    JZW-04-11 0.08 60.23 0.10 1.51 4.82 0.74 34.50 12.91 174.05 69.66 339.41 68.72 618.52 125.46 8616.76 2.80
    JZW-04-12 0.10 66.99 0.11 1.22 3.82 0.43 27.46 10.98 154.77 65.89 358.34 79.94 762.57 163.27 9936.60 2.55
    JZW-04-13 11.97 171.56 5.26 23.34 10.17 0.63 39.98 13.89 189.94 79.71 419.94 91.83 859.67 181.63 10578.09 10.30
    JZW-04-14 65.37 298.78 22.37 101.52 32.55 2.35 85.02 24.36 286.94 105.04 491.43 95.66 824.79 162.26 8480.97 6.04
    JZW-04-15 6.79 115.23 4.49 25.02 14.77 1.17 56.54 18.63 235.21 89.19 432.63 87.74 770.86 155.70 8253.51 13.14
    JZW-04-16 0.08 143.10 0.10 1.57 4.49 0.43 33.03 13.20 188.02 78.72 430.31 96.19 912.88 196.97 10688.80 4.02
    JZW-04-17 8.13 125.60 2.89 13.83 9.52 1.78 42.63 14.84 186.48 71.21 349.84 70.31 627.67 124.93 9154.39 4.07
    JZW-04-18 99.95 319.33 32.92 124.85 33.94 2.91 52.05 11.97 128.29 46.46 220.98 46.51 429.63 93.21 8121.98 5.88
    JZW-04-19 0.52 145.07 0.34 2.67 5.21 0.45 37.68 14.74 205.22 86.48 461.45 101.44 951.29 198.27 10518.91 9.08
    JZW-04-20 0.08 137.48 0.09 1.44 4.50 0.42 31.88 12.67 176.65 75.00 408.63 90.49 865.90 183.19 10703.89 4.38
    JZW-04-21 2.05 133.21 1.26 7.90 10.48 1.22 59.34 20.30 252.37 94.63 444.29 87.25 758.64 150.01 8540.00 4.23
    JZW-04-22 0.49 84.70 0.25 2.64 5.50 1.06 39.35 14.09 184.25 71.05 350.12 73.39 647.51 131.99 8587.79 4.98
    JZW-04-23 0.11 118.60 0.13 2.18 6.76 0.82 47.01 16.70 220.64 84.53 405.59 81.20 721.80 143.89 8768.51 8.39
    JZW-04-24 21.44 105.25 5.66 16.59 6.26 0.54 21.75 7.68 104.51 42.90 232.29 51.84 514.12 112.00 10329.94 2808.17
    JZW-04-25 0.56 145.56 0.65 5.15 10.22 1.37 62.03 21.59 257.28 92.67 428.98 81.97 708.60 138.17 8311.77 4.35
    JZW-04-26 0.18 96.88 0.16 2.06 3.95 1.21 24.04 7.91 103.66 43.35 241.27 58.56 628.70 153.42 9891.64 4.89
    JZW-04-27 24.08 210.60 7.57 32.58 14.39 1.56 65.71 21.62 266.03 98.20 458.92 89.47 777.46 154.23 8691.08 13.87
    JZW-04-28 1.01 138.07 0.57 4.21 6.61 0.57 39.70 14.90 205.15 83.56 438.19 94.46 881.23 184.71 10204.75 9.06
    JZW-04-29 1.93 193.99 0.95 5.27 7.22 0.55 45.36 17.91 252.49 109.41 595.09 132.24 1264.24 265.59 10649.64 12.07
    JZW-04-30 35.37 147.57 9.43 39.58 14.17 1.24 51.10 16.83 216.77 83.30 400.43 80.64 720.52 145.29 8072.14 3.62
    JZW-05-01 3.52 55.70 1.18 6.79 5.49 1.33 23.57 6.84 78.72 28.61 132.49 25.70 228.90 47.07 6998.19 13.91
    JZW-05-02 66.05 207.46 12.01 34.53 7.40 0.48 19.65 6.61 95.47 43.51 247.95 56.03 544.28 115.60 9100.90 3.61
    JZW-05-03 0.12 150.49 0.20 2.47 4.23 0.56 25.80 10.69 160.62 71.80 407.86 92.42 885.37 184.43 9345.31 4.44
    JZW-05-04 0.53 76.69 0.22 2.64 4.68 0.42 27.21 10.53 149.22 64.82 356.12 77.68 726.64 150.37 9370.79 2.46
    JZW-05-05 0.02 103.62 0.07 1.02 2.44 0.20 16.99 7.08 105.03 46.81 264.79 58.50 568.26 117.87 9142.27 3.73
    JZW-05-06 0.09 103.82 0.10 1.07 2.66 0.21 18.49 7.74 115.67 51.66 292.12 65.65 636.98 133.88 8976.60 2.95
    JZW-05-07 0.03 81.17 0.05 0.96 1.88 0.21 13.53 5.65 84.91 38.64 226.75 51.86 516.92 110.68 9750.69 2.30
    JZW-05-08 39.16 225.79 11.62 42.28 11.94 0.49 38.63 13.31 171.08 67.81 345.69 69.54 623.04 121.26 8627.30 3.71
    JZW-05-09 0.21 84.22 0.09 1.01 2.00 0.20 13.73 5.60 85.17 38.13 219.47 49.95 487.72 104.37 9242.52 7.32
    JZW-05-10 0.69 89.47 0.19 1.51 2.25 0.29 15.84 6.26 93.02 41.90 230.95 51.44 510.79 105.55 9545.73 3.16
    JZW-05-11 0.02 130.31 0.11 1.58 3.71 0.41 20.98 7.99 112.68 49.38 269.79 59.22 565.94 118.07 9352.64 3.25
    JZW-05-12 0.04 76.73 0.18 3.36 6.28 1.17 30.87 9.68 115.40 41.82 194.90 36.86 321.93 63.52 7503.40 8.37
    JZW-05-13 1.79 40.57 0.66 3.93 3.52 1.07 17.39 5.33 64.40 23.70 112.27 22.47 202.84 42.93 6998.19 10.62
    JZW-05-14 0.66 48.84 0.33 3.03 4.37 1.26 23.31 7.33 87.03 32.30 153.62 30.04 271.22 56.70 7003.49 10.91
    JZW-05-15 0.05 130.81 0.12 1.70 4.54 0.38 31.69 12.24 163.89 64.75 323.48 63.61 568.70 110.20 8744.06 96.47
    JZW-05-16 1.55 114.35 0.58 3.30 2.65 0.40 14.91 6.35 90.90 41.05 240.62 56.82 574.96 124.76 10613.62 11.62
    JZW-05-17 0.13 105.48 0.11 1.25 2.43 0.20 16.52 6.89 101.80 46.14 259.45 57.74 559.63 116.49 9370.74 2.92
    JZW-05-18 0.00 82.78 0.05 0.75 2.08 0.30 14.98 6.27 93.53 42.84 247.67 55.98 555.67 120.49 9649.52 3.92
    JZW-05-19 0.01 80.57 0.06 0.96 2.62 0.33 18.22 7.30 107.43 47.87 270.70 60.27 589.80 126.89 9435.65 2.74
    JZW-05-20 8.71 104.45 2.31 7.61 3.21 0.33 15.11 6.12 92.77 43.24 253.77 59.23 583.61 127.17 9470.15 3.59
    JZW-05-21 0.01 77.44 0.18 2.57 5.66 0.49 33.74 12.07 166.50 69.42 366.97 76.42 693.62 140.40 9343.39 2.52
    JZW-05-22 0.00 75.07 0.06 0.87 2.38 0.26 14.64 6.07 87.75 39.06 219.58 49.56 476.16 100.63 9733.09 2.22
    JZW-05-23 1.26 86.98 0.34 1.98 2.80 0.31 15.16 6.18 89.07 38.68 213.55 47.83 459.09 96.91 9677.14 10.20
    JZW-05-24 0.01 126.17 0.08 1.40 3.07 0.23 22.62 9.35 137.96 61.41 339.00 74.70 694.82 144.57 8805.60 3.66
    JZW-05-25 0.00 74.81 0.06 0.95 2.10 0.29 14.64 5.88 84.45 36.56 202.35 45.24 433.01 92.05 10068.98 1.79
    JZW-05-26 15.22 157.07 3.59 17.78 17.15 1.83 82.79 27.13 328.20 118.13 539.31 102.02 857.80 165.30 8373.90 4.73
    JZW-05-27 3.88 140.22 1.02 5.08 4.97 0.31 30.43 11.90 161.00 65.97 333.79 68.31 602.43 120.86 8710.49 3.78
    JZW-05-28 0.03 69.00 0.04 0.76 1.85 0.18 12.35 4.78 72.68 31.85 178.35 39.74 382.00 80.10 9697.32 2.73
    JZW-05-29 0.02 126.55 0.08 1.08 2.05 0.24 13.69 5.81 92.59 44.53 273.11 65.87 664.95 147.45 10278.35 1.93
    JZW-05-30 72.90 243.84 14.56 48.56 15.56 1.42 52.46 16.10 199.04 74.98 360.71 71.52 614.60 122.51 8529.27 9.80
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    3   锆石Ti含量与锆石晶出温度计算结果

    3   Ti content in zircon and calculation results of zircon crystallization temperature

    点号 Ti/10−6 $\rm 1a_{SiO_2} $ $\rm 2a_{TiO_2} $ $\rm 3a_{TiO_2} $ $\rm a_{TiO_2} $ 1T/℃ 2T/℃ 3T/℃
    JZW-01-01 24.80 1 0.9 0.5 0.3 851 922 992
    JZW-01-02 3.41 1 0.9 0.5 0.3 662 711 758
    JZW-01-03 14.24 1 0.9 0.5 0.3 791 855 917
    JZW-01-04 48.92 1 0.9 0.5 0.3 934 1017 1099
    JZW-01-05 19.33 1 0.9 0.5 0.3 823 891 957
    JZW-01-06 3.16 1 0.9 0.5 0.3 656 704 751
    JZW-01-07 8.04 1 0.9 0.5 0.3 735 792 848
    JZW-01-08 2.91 1 0.9 0.5 0.3 650 697 743
    JZW-01-09 3.44 1 0.9 0.5 0.3 663 712 759
    JZW-01-10 1.85 1 0.9 0.5 0.3 616 660 702
    JZW-01-11 4.47 1 0.9 0.5 0.3 684 735 785
    JZW-01-12 5.45 1 0.9 0.5 0.3 701 754 805
    JZW-01-13 3.57 1 0.9 0.5 0.3 666 715 762
    JZW-01-14 4.10 1 0.9 0.5 0.3 677 727 776
    JZW-01-15 3.72 1 0.9 0.5 0.3 669 719 766
    JZW-01-16 7.31 1 0.9 0.5 0.3 727 783 837
    JZW-01-17 3.99 1 0.9 0.5 0.3 675 725 773
    JZW-01-18 3.68 1 0.9 0.5 0.3 668 718 765
    JZW-01-19 4.14 1 0.9 0.5 0.3 678 728 777
    JZW-01-20 6.07 1 0.9 0.5 0.3 710 764 817
    JZW-01-21 7.20 1 0.9 0.5 0.3 725 781 835
    JZW-01-22 4.99 1 0.9 0.5 0.3 693 746 796
    JZW-01-23 2.15 1 0.9 0.5 0.3 627 672 715
    JZW-01-24 9.84 1 0.9 0.5 0.3 754 814 871
    JZW-01-25 4.53 1 0.9 0.5 0.3 685 737 786
    JZW-01-26 3.37 1 0.9 0.5 0.3 661 710 757
    JZW-01-27 3.52 1 0.9 0.5 0.3 665 714 761
    JZW-01-28 4.10 1 0.9 0.5 0.3 677 727 776
    JZW-01-29 7.91 1 0.9 0.5 0.3 734 791 846
    JZW-01-30 4.13 1 0.9 0.5 0.3 677 728 777
    JZW-02-01 2.46 1 0.9 0.5 0.3 637 683 727
    JZW-02-02 1.82 1 0.9 0.5 0.3 615 659 701
    JZW-02-03 8.20 1 0.9 0.5 0.3 737 794 850
    JZW-02-04 3.17 1 0.9 0.5 0.3 656 705 751
    JZW-02-05 2.46 1 0.9 0.5 0.3 637 683 727
    JZW-02-06 7.14 1 0.9 0.5 0.3 724 780 834
    JZW-02-07 2.49 1 0.9 0.5 0.3 638 684 729
    JZW-02-08 3.83 1 0.9 0.5 0.3 671 721 769
    JZW-02-09 5.89 1 0.9 0.5 0.3 707 761 813
    JZW-02-10 6.59 1 0.9 0.5 0.3 717 772 825
    JZW-02-11 9.18 1 0.9 0.5 0.3 748 806 863
    JZW-02-12 11.70 1 0.9 0.5 0.3 771 832 892
    JZW-02-13 1.82 1 0.9 0.5 0.3 615 659 701
    JZW-02-14 7.56 1 0.9 0.5 0.3 730 786 841
    JZW-02-15 8.45 1 0.9 0.5 0.3 740 798 853
    JZW-02-16 4.33 1 0.9 0.5 0.3 681 732 781
    JZW-02-17 8.53 1 0.9 0.5 0.3 741 799 854
    JZW-02-18 3.06 1 0.9 0.5 0.3 654 702 748
    JZW-02-19 1.80 1 0.9 0.5 0.3 614 658 700
    JZW-02-20 4.03 675 726 774
    JZW-02-21 3.18 657 705 751
    JZW-02-22 4.31 1 0.9 0.5 0.3 681 732 781
    JZW-02-23 3.00 1 0.9 0.5 0.3 652 700 746
    JZW-02-24 6.83 1 0.9 0.5 0.3 720 776 829
    JZW-02-25 12.87 1 0.9 0.5 0.3 780 843 904
    JZW-02-26 22.54 1 0.9 0.5 0.3 840 910 978
    JZW-02-27 7.76 1 0.9 0.5 0.3 732 789 844
    JZW-02-28 2.09 1 0.9 0.5 0.3 625 670 713
    JZW-02-29 2.31 1 0.9 0.5 0.3 632 678 722
    JZW-02-30 2.34 1 0.9 0.5 0.3 633 679 723
    JZW-03-01 4.36 1 0.9 0.5 0.3 682 733 782
    JZW-03-02 6.53 1 0.9 0.5 0.3 716 771 824
    JZW-03-03 2.58 1 0.9 0.5 0.3 641 687 732
    JZW-03-04 3.09 1 0.9 0.5 0.3 654 702 749
    JZW-03-05 4.46 1 0.9 0.5 0.3 684 735 784
    JZW-03-06 2.70 1 0.9 0.5 0.3 644 691 736
    JZW-03-07 11.75 1 0.9 0.5 0.3 771 833 892
    JZW-03-08 14.47 1 0.9 0.5 0.3 792 856 919
    JZW-03-09 2.08 1 0.9 0.5 0.3 625 670 712
    JZW-03-10 3.19 1 0.9 0.5 0.3 657 705 752
    JZW-03-11 8.00 1 0.9 0.5 0.3 735 792 847
    JZW-03-12 5.50 1 0.9 0.5 0.3 701 755 806
    JZW-03-13 3.19 1 0.9 0.5 0.3 657 705 752
    JZW-03-14 4.03 1 0.9 0.5 0.3 675 726 774
    JZW-03-15 4.95 1 0.9 0.5 0.3 693 745 795
    JZW-03-16 3.40 1 0.9 0.5 0.3 662 711 758
    JZW-03-17 3.61 1 0.9 0.5 0.3 667 716 763
    JZW-03-18 13.66 1 0.9 0.5 0.3 787 850 911
    JZW-03-19 16.06 1 0.9 0.5 0.3 803 869 932
    JZW-03-20 9.35 1 0.9 0.5 0.3 749 808 865
    JZW-03-21 3.37 1 0.9 0.5 0.3 661 710 757
    JZW-03-22 3.11 1 0.9 0.5 0.3 655 703 749
    JZW-03-23 4.68 1 0.9 0.5 0.3 688 740 789
    JZW-03-24 3.76 1 0.9 0.5 0.3 670 720 767
    JZW-03-25 3.31 1 0.9 0.5 0.3 660 708 755
    JZW-03-26 2.68 1 0.9 0.5 0.3 643 690 735
    JZW-03-27 3.12 1 0.9 0.5 0.3 655 703 749
    JZW-03-28 3.82 1 0.9 0.5 0.3 671 721 769
    JZW-03-29 4.12 1 0.9 0.5 0.3 677 728 776
    JZW-03-30 6.90 1 0.9 0.5 0.3 721 777 830
    JZW-04-01 3.90 1 0.9 0.5 0.3 673 723 771
    JZW-04-02 4.16 1 0.9 0.5 0.3 678 729 777
    JZW-04-03 3.57 1 0.9 0.5 0.3 666 715 762
    JZW-04-04 4.56 1 0.9 0.5 0.3 686 737 787
    JZW-04-05 3.47 1 0.9 0.5 0.3 663 713 760
    JZW-04-06 16.71 1 0.9 0.5 0.3 807 873 937
    JZW-04-07 2.74 1 0.9 0.5 0.3 645 692 737
    JZW-04-08 6.03 1 0.9 0.5 0.3 709 764 816
    JZW-04-09 6.42 1 0.9 0.5 0.3 715 770 823
    JZW-04-10 2.27 1 0.9 0.5 0.3 631 677 720
    JZW-04-11 2.80 1 0.9 0.5 0.3 647 694 739
    JZW-04-12 2.55 1 0.9 0.5 0.3 640 686 731
    JZW-04-13 10.30 1 0.9 0.5 0.3 759 818 876
    JZW-04-14 6.04 1 0.9 0.5 0.3 710 764 816
    JZW-04-15 13.14 1 0.9 0.5 0.3 783 845 906
    JZW-04-16 4.02 1 0.9 0.5 0.3 675 726 774
    JZW-04-17 4.07 1 0.9 0.5 0.3 676 727 775
    JZW-04-18 5.88 1 0.9 0.5 0.3 707 761 813
    JZW-04-19 9.08 1 0.9 0.5 0.3 747 805 862
    JZW-04-20 4.38 1 0.9 0.5 0.3 682 733 783
    JZW-04-21 4.23 1 0.9 0.5 0.3 679 730 779
    JZW-04-22 4.98 1 0.9 0.5 0.3 693 745 796
    JZW-04-23 8.39 1 0.9 0.5 0.3 739 797 852
    JZW-04-24 2808.17 1 0.9 0.5 0.3 1892 2174 2486
    JZW-04-25 4.35 1 0.9 0.5 0.3 682 733 782
    JZW-04-26 4.89 1 0.9 0.5 0.3 691 744 794
    JZW-04-27 13.87 1 0.9 0.5 0.3 788 852 913
    JZW-04-28 9.06 1 0.9 0.5 0.3 746 805 861
    JZW-04-29 12.07 1 0.9 0.5 0.3 774 836 896
    JZW-04-30 3.62 1 0.9 0.5 0.3 667 716 764
    JZW-05-01 13.91 1 0.9 0.5 0.3 788 852 914
    JZW-05-02 3.61 1 0.9 0.5 0.3 667 716 763
    JZW-05-03 4.44 1 0.9 0.5 0.3 683 735 784
    JZW-05-04 2.46 1 0.9 0.5 0.3 637 683 727
    JZW-05-05 3.73 1 0.9 0.5 0.3 669 719 767
    JZW-05-06 2.95 1 0.9 0.5 0.3 651 698 744
    JZW-05-07 2.30 1 0.9 0.5 0.3 632 678 721
    JZW-05-08 3.71 1 0.9 0.5 0.3 669 718 766
    JZW-05-09 7.32 1 0.9 0.5 0.3 727 783 837
    JZW-05-10 3.16 1 0.9 0.5 0.3 656 704 751
    JZW-05-11 3.25 1 0.9 0.5 0.3 658 707 753
    JZW-05-12 8.37 1 0.9 0.5 0.3 739 797 852
    JZW-05-13 10.62 1 0.9 0.5 0.3 762 822 880
    JZW-05-14 10.91 1 0.9 0.5 0.3 764 825 883
    JZW-05-15 96.47 1 0.9 0.5 0.3 1031 1128 1225
    JZW-05-16 11.62 1 0.9 0.5 0.3 770 832 891
    JZW-05-17 2.92 1 0.9 0.5 0.3 650 698 743
    JZW-05-18 3.92 1 0.9 0.5 0.3 673 723 772
    JZW-05-19 2.74 1 0.9 0.5 0.3 645 692 737
    JZW-05-20 3.59 1 0.9 0.5 0.3 666 716 763
    JZW-05-21 2.52 1 0.9 0.5 0.3 639 685 730
    JZW-05-22 2.22 1 0.9 0.5 0.3 629 675 718
    JZW-05-23 10.20 1 0.9 0.5 0.3 758 817 875
    JZW-05-24 3.66 1 0.9 0.5 0.3 668 717 765
    JZW-05-25 1.79 1 0.9 0.5 0.3 614 658 699
    JZW-05-26 4.73 1 0.9 0.5 0.3 689 741 790
    JZW-05-27 3.78 1 0.9 0.5 0.3 670 720 768
    JZW-05-28 2.73 1 0.9 0.5 0.3 645 692 737
    JZW-05-29 1.93 1 0.9 0.5 0.3 619 664 706
    JZW-05-30 9.80 1 0.9 0.5 0.3 754 813 871
    *锆石Ti饱和温度计计算公式据Ferry and Watson(2007)
    T(K)= $ \frac{4800(\pm 86)}{5.711(\pm 0.072)-\left[\mathrm{log}\left({ppm}_{Ti-in-zircon}\right)+\mathrm{log}\left({a}_{SiO2}\right)-\mathrm{l}\mathrm{o}\mathrm{g}\left({a}_{TiO2}\right)\right]} $
    *1T,2T,3T分别为1aSiO2,2aSiO2,3aSiO2活度对应的锆石晶出温度
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-03-09
  • 修回日期:  2024-02-27
  • 刊出日期:  2024-12-27

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