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冲绳海槽晚更新世以来沉积速率的时空差异及其控制因素

李军

李军. 冲绳海槽晚更新世以来沉积速率的时空差异及其控制因素[J]. 海洋地质与第四纪地质, 2007, 27(4): 37-43.
引用本文: 李军. 冲绳海槽晚更新世以来沉积速率的时空差异及其控制因素[J]. 海洋地质与第四纪地质, 2007, 27(4): 37-43.
LI JUN. SPATIAL AND TEMPORAL VARIATION OF THE SEDIMENTATION RATES IN OKINAWA TROUGH SINCE THE LATE PLEISTOCENE AND THEIR CONTROLLING FACTORS[J]. Marine Geology & Quaternary Geology, 2007, 27(4): 37-43.
Citation: LI JUN. SPATIAL AND TEMPORAL VARIATION OF THE SEDIMENTATION RATES IN OKINAWA TROUGH SINCE THE LATE PLEISTOCENE AND THEIR CONTROLLING FACTORS[J]. Marine Geology & Quaternary Geology, 2007, 27(4): 37-43.

冲绳海槽晚更新世以来沉积速率的时空差异及其控制因素

详细信息
    作者简介:

    李军(1974-),男,博士,从事海洋沉积学和地球化学研究

  • 基金项目:

    国家自然科学基金项目(40506013)

  • 中图分类号: P736.4

SPATIAL AND TEMPORAL VARIATION OF THE SEDIMENTATION RATES IN OKINAWA TROUGH SINCE THE LATE PLEISTOCENE AND THEIR CONTROLLING FACTORS

More Information
  • 摘要: 收集和分析了冲绳海槽内不同区域的33个站位柱状样的测年资料,计算了不同时段的沉积速率。结果表明,冲绳海槽内晚更新世以来的沉积速率有较大的时空差异,在空间上,由北向南有沉积速率增加的趋势,而靠近海槽西坡的站位沉积速率要大于东坡;在时间上,晚更新世期间的沉积速率要明显大于全新世。冲绳海槽内不同区域和不同时段沉积速率的差异反映了海槽内沉积环境和物质来源的复杂性,这种差异性主要是由不同区域沉积作用和物源供应变化的结果引起,末次冰消期以来的古海洋环境的变化、黑潮的摆动等因素也起到一定的作用,而事件沉积(如火山-热液作用和浊流沉积)的影响也不容忽视。
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  • 收稿日期:  2006-12-08
  • 修回日期:  2007-06-20

冲绳海槽晚更新世以来沉积速率的时空差异及其控制因素

    作者简介:

    李军(1974-),男,博士,从事海洋沉积学和地球化学研究

基金项目:

国家自然科学基金项目(40506013)

  • 中图分类号: P736.4

摘要: 收集和分析了冲绳海槽内不同区域的33个站位柱状样的测年资料,计算了不同时段的沉积速率。结果表明,冲绳海槽内晚更新世以来的沉积速率有较大的时空差异,在空间上,由北向南有沉积速率增加的趋势,而靠近海槽西坡的站位沉积速率要大于东坡;在时间上,晚更新世期间的沉积速率要明显大于全新世。冲绳海槽内不同区域和不同时段沉积速率的差异反映了海槽内沉积环境和物质来源的复杂性,这种差异性主要是由不同区域沉积作用和物源供应变化的结果引起,末次冰消期以来的古海洋环境的变化、黑潮的摆动等因素也起到一定的作用,而事件沉积(如火山-热液作用和浊流沉积)的影响也不容忽视。

English Abstract

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