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    从生物脂类化合物到沉积有机质的变化及其对正演烃源岩有机质形成的启示

    王红梅 马相如 刘邓 杨小芬 李继红

    王红梅, 马相如, 刘邓, 杨小芬, 李继红, 2007. 从生物脂类化合物到沉积有机质的变化及其对正演烃源岩有机质形成的启示. 地球科学, 32(6): 748-754.
    引用本文: 王红梅, 马相如, 刘邓, 杨小芬, 李继红, 2007. 从生物脂类化合物到沉积有机质的变化及其对正演烃源岩有机质形成的启示. 地球科学, 32(6): 748-754.
    WANG Hong-mei, MA Xiang-ru, LIU Deng, YANG Xiao-fen, LI Ji-hong, 2007. Chemical Variation from Biolipids to Sedimentary Organic Matter in Modern Oceans and Its Implication to the Geobiological Evaluation of Hydrocarbon Source Rocks. Earth Science, 32(6): 748-754.
    Citation: WANG Hong-mei, MA Xiang-ru, LIU Deng, YANG Xiao-fen, LI Ji-hong, 2007. Chemical Variation from Biolipids to Sedimentary Organic Matter in Modern Oceans and Its Implication to the Geobiological Evaluation of Hydrocarbon Source Rocks. Earth Science, 32(6): 748-754.

    从生物脂类化合物到沉积有机质的变化及其对正演烃源岩有机质形成的启示

    基金项目: 

    中国石油化工股份有限公司海相油气勘探前瞻性项目 G0800-06-ZS-319

    国家自然科学基金项目 40672081

    详细信息
      作者简介:

      王红梅(1970—), 女, 副教授, 主要从事地球微生物学的教学和科研工作.E-mail:hmwang@cug.edu.cn

    • 中图分类号: P736.2

    Chemical Variation from Biolipids to Sedimentary Organic Matter in Modern Oceans and Its Implication to the Geobiological Evaluation of Hydrocarbon Source Rocks

    • 摘要: 现代海洋生物有机组分的动态变化过程是利用正演法评价海相优质烃源岩的重要中间环节, 可以为估算沉积过程中有机质的损耗提供参考.从化学组成来看, 生物体的脂类与原油成分最为接近, 而且与其他生化组分相比, 脂类的化学性质相对稳定, 可以长期保存在地层中, 因此脂类是最重要的生油母质.温度、盐度、CO2等环境条件以及生物的种类和生长阶段对生物脂类组成有重要影响, 不同环境条件和不同种类的生物对烃源岩有机质的贡献也不同.海水中的有机质在沉积过程中受原始生产力和氧化还原条件的影响.在特定生境中, 在一定的生产力范围内, 沉积有机质的通量与生产力有正相关关系.超过此范围, 沉积有机质通量与生产力关系不大.氧化条件下有机质降解速度快, 而还原条件则有利于沉积有机质的保存.生物膜的形成不仅使有机质更容易沉积, 而且降低了有机质被降解的机会.地质历史时期生物膜的识别对研究烃源岩有机质的保存具有重要意义.

       

    • 图  1  非极地区海洋2 000 m深处年生产力与有机碳通量的关系(据Harvey, 2006修改)

      Fig.  1.  The relationship between annual organic carbon flux and annual primary productivity at 2 000 m depth of non-polar marine (Modified from Harvey, 2006)

      图  2  海洋生物生化组分的降解(据Harvey, 2006,重新绘制)

      Fig.  2.  Variations of biochemicals in marine organisms during degradation (Redrew from Harvey, 2006)

      表  1  生物体及其演化产物的平均元素组成(据王启军和陈建渝, 1984; 黄第藩和李晋超, 1982,综合)

      Table  1.   Mean contents of elements in organisms and their derived products

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    • 收稿日期:  2007-08-25
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