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地质科学  1998, Vol. Issue (1): 93-101    DOI:
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湘黔地区中奥陶世海平面上升的沉积响应
江茂生
中国科学院地质研究所, 北京 100029
SEDIMENTARY RESPONSE TO SEA LEVEL RISE DURING MIDDLE ORDOVICIAN IN THE GUIZHOU AND HUNAN RIGIONS
Jiang Maosheng
Institute of Geology, Chinese Academy of Sciences, Beijing 100029
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摘要 中奥陶世克拉道克阶(Caradocian)在全球范围内为海侵期,体现在全球范围广泛的黑色页岩沉积及笔石动物的大规模繁盛,湘黔地区这一时期地层发育完全,从碳酸盐台地-斜坡-外陆架盆地均有不同程度的响应。在台地区表现为碳酸盐台地的淹没,斜坡区表现为碳酸盐重力流及黑色页岩、粉砂岩沉积,形成碳酸盐与陆源碎屑的混合沉积,而在外陆架盆地区表现为黑色岩系大规模发育及笔石的大量繁盛。
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江茂生
关键词中奥陶世   海平面上升   黑色岩系   碳酸盐重力流   湘黔地区     
Abstract: Middle Ordovician Caradocian was transgressive stage in global scale.In this stage,the black shale was distributed in large scale and graptolite was massively propagated.It is obvious that sedimentation responsed to sea level rising during Middle Ordovician in the Guizhou and Hunan regions.From carbonate platform to outer-shelf basin the sedimentary characters are different.This differentiation is reflected in rocks and fossils.In carbonate platform it is indicated that sedimentary differentiation during Early Ordovician is not present and carbonate platform is drowned.Deep sea argillaceous micritic limestone was deposited in large area.Brachiopoda and trilobite disappear and noktonic nautilus flourish.In the transition area between inner and outer-shelf,sedimentary rocks consist of black carbonaceous shale,siliceous shale and clay shale.Carbonate gravity flow is common and calcareous dolomite and manganiferous limestone are well developed.The fossil is mainly graptolite and nektonic trilobite.In the outer-shelf basin,black shale is well developed and anoxic envionmental characters are obvious.Black siliceous slate and shale and pyritic crastals are well developed.Organism is only graptolite.
Key wordsiddle Ordovician   Sea level rising   Black shale   Carbonate gravity flow   Guizhou and Hunan regions   
收稿日期: 1997-01-06;
基金资助:国家自然科学基金;中科院院长基金
引用本文:   
江茂生. 1998, 湘黔地区中奥陶世海平面上升的沉积响应. 地质科学, (1): 93-101.
Jiang Maosheng. SEDIMENTARY RESPONSE TO SEA LEVEL RISE DURING MIDDLE ORDOVICIAN IN THE GUIZHOU AND HUNAN RIGIONS[J]. Chinese Journal of Geology, 1998, (1): 93-101.
 
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[1] 罗俊成, 杨海军, 朱长见, 党青宁, 孙雄伟, 桑洪, 刘永福, 杨俊丰. 塔里木东部寒武纪——中奥陶世坡折带沉积特征及勘探潜力[J]. 地质科学, 2008, 43(4): 661-670,694.
[2] 杨剑, 易发成. 贵州—湖南黑色岩系的有机碳和有机硫特征及成因意义[J]. 地质科学, 2005, (4): 457-463.
[3] 杨剑, 易发成, 刘涛, 李虎杰. 黔北黑色岩系稀土元素地球化学特征及成因意义[J]. 地质科学, 2005, (1): 84-94.
[4] 易发成, 杨剑, 侯兰杰, 汪建中. 黔北黑色岩系的铂族元素地球化学特征及成因探讨[J]. 地质科学, 2004, (3): 367-374.
[5] 涂光炽. 初议中亚成矿域[J]. 地质科学, 1999, (4): 397-404.
[6] 王忠诚, 范德廉, 陈锦石. 大巴山下寒武统黑色岩系中毒重石矿床的成因探讨[J]. 地质科学, 1992, (3): 237-248.
 
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