COMPARISON BETWEEN TWO METHODS USED FOR CALCULATING RELATIVE CLAY MINERAL CONTENTS
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摘要: 应用Biscaye或Cook计算方法,均可得到样品中黏土矿物的相对含量,但前者主要用于细颗粒沉积物定向片衍射图谱的解析,而后者适用于各种粉晶衍射结果的处理。对长江口及东海陆架区表层沉积物样品中<2 μm粒级组分进行了X射线衍射分析,分别采用上述两种方法计算了样品中4种主要黏土矿物(蒙皂石、伊利石、高岭石和绿泥石)的相对含量,并比较了两种计算结果的差别。结果显示,Cook算法在<2 μm定向片与粉晶中的计算值差别较小。在东海陆架区<2 μm沉积物定向片样品中,两种计算方法所得结果在蒙皂石、伊利石相对含量等参数上具有显著相关性;尝试选择其中相关关系以及线性拟合程度较好的数据,建立了两种黏土矿物相对含量计算结果间的转换关系式。Abstract: There are differences between the methods of Biscaye (1965) and Cook (1975) et al used for calculating relative clay mineral contents.The former is usually used in the analyses of oriented slides, while the latter is suitable to deal with the random powder X-ray diffraction mounts.In this study,main types of clay minerals (i.e.smectite,illite,kaolinite and chlorite) in <2 μm fraction sediments of the 7 surface samples from the Yangtze Estuary and 258 surface sediment samples from the continental shelf of the East China Sea were analyzed.The <2 μm fraction samples were extracted based on the Stokes' law and made up the oriented slides.Of 7 sediments from the Yangtze Estuary,each <2 μm fraction was prepared for both oriented slide and powder samples.All of the <2 μm samples were measured with X-ray diffraction and the software of TOPAS 2.0.Then the contents of main types of clay minerals were determined by both Biscaye's and Cook's methods.The analysis results show that the Cook's method can be used in dealing with oriented slides diffraction mounts,because the results of slides and powder samples have no significant discrimination with using Cook's calculation method.Statistical analysis shows some relationship between two group contents which are calculated with Biscaye's or Cook's method respectively,such as the relative contents of smectite and illite.According to the linear relationship coefficients between the two group contents,we build the conversion formulae for them,which can be used in the study area of the East China Sea shelf.
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[1] Biscaye P E.Mineralogy and sedimentation of recent deep-sea clay in the Atlantic Ocean and adjacent seas and oceans[J].Geological Society of America Bulletin,1965,76:803-832.
[2] Cook H E,Johnson P D,Matti J C,et al.Methods of sample preparation and X-ray diffraction data analysis,X-ray minerology laboratory,deep sea drilling project,University of California,Riverside[J].Initial Reports of the DSDP,1975,28:999-1007.
[3] Ferrell R E,Aharon P.Mineral assemblages occurring around hydrocarbon vents in the northern Gulf of Mexico[J].Geo-Marine Letters,1994,14(2-3):74-80.
[4] Mascolo N,Summa V,Tateo F.Characterization of toxic elements in clays for human healing use[J].Applied Clay Science,1999,15(5-6):491-500.
[5] Dawson S A,Evans J E.Geological causes of local variation in coastal bluff recession rates,northeast Ohio shoreline of Lake Erie[J].Environmental Geosciences,2001,8(1):1-10.
[6] Amorosi A,Centineo M C,Dinelli E,et al.Geochemical and mineralogical variations as indicators of provenance changes in Late Quaternary deposits of SE Po Plain[J].Sedimentary Geology,2002,151(3-4):273-292.
[7] Frascari F,Matteucci G,Giordano1 P.Evaluation of a eutrophic coastal lagoon ecosystem from the study of bottom sediments[J].Hydrobiologia,2002,475-476(1):387-401.
[8] Morais J O d,Tintelnot M,Irion G,et al.Pathways of clay mineral transport in the coastal zone of the Brazilian continental shelf from Cear to the mouth of the Amazon River[J].Geo-Mar.Lett.,2006,26:16-22.
[9] Sinha R,Bhattacharjee P S,Sangode S J,et al.Valley and interfluve sediments in the Southern Ganga plains,India:exploring facies and magnetic signatures[J].Sedimentary Geology,2007,201(3-4):386-411.
[10] Bertrand S,Charlet F,Chapron E,et al.Reconstruction of the Holocene seismotectonic activity of the Southern Andes from seismites recorded in Lago Icalma,Chile,39 S[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2008,259(2-3):301-322.
[11] Diekmann B,Hofmann J,Henrich R,et al.Detrital sediment supply in the southern Okinawa Trough and its relation to sea-level and Kuroshio dynamics during the late Quaternary[J].Marine Geology,2008,255(1-2):83-95.
[12] Steinke S,Hanebuth T J J,Vogt C,et al.Sea level induced variations in clay mineral composition in the southwestern South China Sea over the past 17000 yr[J].Marine Geology,2008,250(3-4):199-210.
[13] Vogt C,Knies J.Sediment dynamics in the Eurasian Arctic Ocean during the last deglaciation-The clay mineral group smectite perspective[J].Marine Geology,2008,250(3-4):211-222.
[14] Setti M,Marinoni L,L pez-Galindo A.Mineralogical and geochemical characteristics (major,minor,trace elements and REE) of detrital and authigenic clay minerals in a Cenozoic sequence from Ross Sea[J].Antarctica Clay Minerals,2004,39(4):405-421.
[15] Kunze G W.Anomalies in the ethylene glycol solvation technique used in X-ray diffraction[J].Clay and Clay Minerals,1954,3:88-93.
[16] Pierce J W,Siegel F R.Quantification in clay mineral studies of sediments and sedimentary rocks[J].Journal of Sedimentary Petrology,1969,39(1):187-193.
[17] 刘志飞,Colin C,Trentesaux A,等.南海南部晚第四纪东亚季风演化的黏土矿物记录[J].中国科学D辑,2004,34(3):272-279. [LIU Zhifei,Colin C,Trentesaux A,et al.Clay mineral recording late Quaternary East Asian monsoon evolution in the south of the South China Sea[J].Science in China (Series D),2004,34(3):272-279.]
[18] Das S S,Maurya A S,Pandey A C,et al.Influence of sediment source and monsoonal variations on the late Quaternary clay mineral assemblages at ODP site 728A,northwestern Arabian Sea[J].Current Science,2008,95(9-10):1320-1326.
[19] Liu Z,Tuo S,Colin C,et al.Detrital fine-grained sediment contribution from Taiwan to the northern South China Sea and its relation to regional ocean circulation[J].Marine Geology,2008,255(3-4):149-155.
[20] Rex R W,Bauer W R.New amine reagents for X-ray determination of expandale clays in dry samples[J].Clay and Clay Minerals,1964,13:411-418.
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