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    湖北崇阳二叠纪—三叠纪之交钙质微生物岩的时代及基本特征

    杨浩 张素新 江海水 王永标

    杨浩, 张素新, 江海水, 王永标, 2006. 湖北崇阳二叠纪—三叠纪之交钙质微生物岩的时代及基本特征. 地球科学, 31(2): 165-170.
    引用本文: 杨浩, 张素新, 江海水, 王永标, 2006. 湖北崇阳二叠纪—三叠纪之交钙质微生物岩的时代及基本特征. 地球科学, 31(2): 165-170.
    YANG Hao, ZHANG Su-xin, JIANG Hai-shui, WANG Yong-biao, 2006. Age and General Characteristics of Calcimicrobialite near the Permian-Triassic Boundary in Chongyang, Hubei Province. Earth Science, 31(2): 165-170.
    Citation: YANG Hao, ZHANG Su-xin, JIANG Hai-shui, WANG Yong-biao, 2006. Age and General Characteristics of Calcimicrobialite near the Permian-Triassic Boundary in Chongyang, Hubei Province. Earth Science, 31(2): 165-170.

    湖北崇阳二叠纪—三叠纪之交钙质微生物岩的时代及基本特征

    基金项目: 

    国家自然科学基金项目 40232025

    国家自然科学基金项目 40572002

    国家杰出青年基金项目 40325004

    详细信息
      作者简介:

      杨浩(1979-),男,硕士,主要从事古生物学与地层学的研究.E—mail:yangha01999@1999.cug.edu.cn

    • 中图分类号: P534;Q91

    Age and General Characteristics of Calcimicrobialite near the Permian-Triassic Boundary in Chongyang, Hubei Province

    • 摘要: 湖北崇阳钙质微生物岩产在二叠纪末礁相绝灭界线之上, 绝灭界线之下即为晚二叠世长兴期的海绵礁灰岩、棘屑灰岩及藻有孔虫生物碎屑灰岩.微生物岩基本上由中粗晶-微晶方解石组成, 主要沉积构造有“花斑状构造”及藻叠层构造.目前微生物岩中发现的化石主要有球状菌藻类化石、介形虫、微型腹足、双壳、鱼牙及分类位置尚无法确定的棒状微型化石.微生物岩中已发现有牙形石化石: Hindeodusparvus, H.typicalisH.latidentatus, 从牙形石的类型及产出层位分析, 崇阳钙质微生物岩的下部属于晚二叠世长兴期, 上部为早三叠世.崇阳微生物岩在沉积特征、生物组成及牙形石带上均基本可与华南其他地区已发现的微生物岩进行对比.

       

    • 图  1  微生物岩中的“花斑状构造”, 薄片照片, 放大倍数为4倍

      Fig.  1.  Structure of "graniphyic fabric" in the micobialites, ×4

      图  2  湖北崇阳微生物岩地层剖面

      Fig.  2.  Micobialites stratigraphic column in Chongyang of Hubei Province

      图  3  华南微生物岩中Hindeodus parvus产出层位对比

      四川华莹剖面, 据Kershaw et al., 2002; 广西平果剖面为本研究实测, 牙形石带, 据Lehrmann et al., 2003; 贵州边阳剖面, 据Lehrmann et al., 2003; 湖北崇阳剖面为本研究实测

      Fig.  3.  Comparison diagram of Hindeodus parvus horizon of the micobialites in South China

      图  4  微生物岩中的牙形石化石

      产地层位: 湖北崇阳剖面, 离绝灭界线(及微生物岩底) 约8.4 m; 1~2:Hindeodus parvus (Kozur and Pjatakova, 1976), 1.侧视, ×200, 2.侧视, ×300;3:Hindeodus latidentatus (Kozur et al., 1975) 侧视, ×400;4:Hindeodus typicalis (Sweet, 1970) 侧视, ×290;5:Hindeodus sp., 侧视, ×300;6.Hindeodus eurypyge, Nicoll et al., 2002; 侧视, ×240;7~8:Hindeodus inflatus, Nicoll et al., 2002; 7.侧视, ×300, 8.侧视, ×400;9~12.Hindeodus sp., 9.Sb element, 侧视, ×300, 10.侧视, ×250, 11.侧视, ×280, 12.Sc element, 侧视, ×270;比例尺: 200 μm

      Fig.  4.  Conodonts in the micobialites

      图  5  球状微生物化石

      Fig.  5.  Globular bacteria-algae fossils

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      Lehrmann, D.J., 1999. Early Triassic calcimicrobial mounds and biostromes of the Nanpanjiang basin, South China. Geology, 27(4): 359 -362. doi: 10.1130/0091-7613(1999)027<0359:ETCMAB>2.3.CO;2
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    出版历程
    • 收稿日期:  2005-07-19
    • 刊出日期:  2006-03-25

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