贵州早寒武世黑色页岩地球化学特征及其意义
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摘要
贵州早寒武世早期普遍存在一套黑色页岩。通过对麻江羊跳、铜仁、遵义中南、遵义松林小竹、天柱大公塘剖面实地考察与地球化学分析,认为贵州早寒武世黑色页岩是在缺氧环境下,热水沉积为主导,同时受陆源强烈影响,是海水、生物和地球深部物质共同作用下形成的.
There is a black shale which widespread at Early Cambrian in Guizhou.This paper speculated there is an outcrop close to the deep-water basin from the geochemistry analysis and explore on the spot to Majiang Yangtiao,Tongren,Zunyi Zhongnan,Zunyi Songlin Xiaozhu,Tianzhu Dagongtang sections.The black shale formed in a special environment which is anoxic.It leaded by hydrothermal process and land-carriage,also,by the impact of biological and deep earth material formed under the joint action.
There is a black shale which widespread at Early Cambrian in Guizhou.This paper speculated there is an outcrop close to the deep-water basin from the geochemistry analysis and explore on the spot to Majiang Yangtiao,Tongren,Zunyi Zhongnan,Zunyi Songlin Xiaozhu,Tianzhu Dagongtang sections.The black shale formed in a special environment which is anoxic.It leaded by hydrothermal process and land-carriage,also,by the impact of biological and deep earth material formed under the joint action.
引文
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[2]K irschvink J L,R ipperdan R L,Evans D A.Evidence for a large-scale reorgan ization of Early Cambrian continental masses by inertial inter-change true polar wander.Science,1997,277:541-545.
[3]K irschvink J L,Raub T D A.M ethane fuse for the Cambrian explosion:carbon cycles and true polar wander.Comptes Rendus Geoscience,2003,335:65-78.
[4]于柄松,陈建强,李兴武,林畅松.塔里木盆地下寒武统底部黑色页岩地球化学及其岩石圈演化意义[J].中国科学D辑,2002,32:374-382.
[5]Yang Ru idong,W ang Shijie,Ouyang Z iyuan,Zhu Lijun,Jiang Lijun,Zhang Lihua,and Gao Hu i.Stratigraphical and B iological Sign ificance ofNegative Carbon Isotopic Anomalies in the Basal Cambrian Series ofGu izhou Province.Chinese Journal ofGeochem istry,2005,24(2):108-115.
[6]Fan D elian,Yang Ru iying,Huang Zhongxiang.The Lower Cambrian b lack shale series and irid ium anomaly in south Ch ina.In:Academ ia S in icaeds.D evelopm ents in geosciences,contribution to 27 th IGC.Moscow,1984,215-224.
[7]于柄松,陈建强,李兴武,林畅松.塔里木盆地肖尔布拉克剖面下寒武统底部硅质岩微量元素和稀土元素地球化学及其沉积背景[J].沉积学报,2004,22(1):59-66.
[8]钱逸.中国小壳化石分类学与生物地层学[M].北京:科技出版社,1991,82-115.
[9]陈先沛,高计元,陈多福.热水沉积作用的概念和几个岩石学标志[J].沉积学报,1992,10(3):124-132.
[10]徐跃通.江西东乡矿区沉积硅质岩的地球化学特征和成因[J].沉积学报,1997,15(3):110-114.
[11]杨瑞东,张位华,姜立君,高慧.贵州遵义松林寒武系底部热液喷口及与喷口相关生物群特征[J].地质论评,2005,51(5):481-492.
[12]宋天锐,丁悌平.硅质岩中的硅同位素(δ30 S i)应用于沉积相分析的新尝试[J].科学通报,1989,(18):1408-1411.
[13]彭军,夏文杰,伊海生.湘西晚前寒武纪层状硅质岩硅氧同位素组成及成因分析[J].地质论评,1995,41(1):34-41.
[14]Sugisak i R,Yamamoto K,Adach iM.Triassic bedded cherts in central Japan are not pelagic.Nature,1982,298:644-647.
[15]夏菲,马东升,潘家永,孙占学,曹双林,聂文明,吴凯.贵州天柱大河边和玉屏重晶石矿床热水沉积成因的锶同位素证据[J].科学通报,2004,49(24):2592-2595.
[16]夏菲,马东升,潘家永,陈少华,曹双林,孙占学,刘成东,郭国林.天柱大河边-新晃重晶石矿床矿物组成特征的电子探针研究[J].矿物学报,2005,25(3):289-294.
[17]王益友,郭文莹,张国栋.几种地化标志在金湖凹陷阜宁群沉积环境中的应用[J].同济大学学报,1979,7(2):51-60.
[18]彭军,田景春,伊海生,夏文杰.扬子板块东南大陆边缘晚前寒武纪热水沉积作用[J].沉积学报,2000,18(1):107-113.
[19]王成善,胡修棉,李祥挥.古海洋溶解氧与缺氧和富氧问题研究[J].海洋地质与第四纪地质,1999,19(3):39-47.
[20]中国科学院矿床地球化学开放研究实验室,矿床地球化学[M].北京:地质出版社,1997,1-538.
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