| 武汉地区二叠系栖霞组灰岩-含泥灰岩韵律层生物产率 |
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| 引用本文： | 包汉勇,马仲武,胡超涌,颜佳新. 武汉地区二叠系栖霞组灰岩-含泥灰岩韵律层生物产率[J]. 地质科技情报, 2009, 28(2) |
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| 作者姓名： | 包汉勇 马仲武 胡超涌 颜佳新 |
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| 作者单位： | 中国地质大学研究生院,武汉,430074;中国地质大学生物地质与环境地质教育部重点实验室,武汉,430074 |
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| 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，国家自然科学基金 |
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| 摘 要： | 选取生物产率分析指标生源w(Ba)、生源w(Al)及w(Al)/w(Ti)比值,分析了武汉地区二叠系栖霞组灰岩-含泥灰岩韵律层的生物产率变化;同时用w(V)/w(V+Ni)、w(V)/w(Cr)及w(Mo)等指标分析了韵律层的古氧相特征.结果表明:武汉地区栖霞组灰岩-含泥灰岩韵律层灰岩部分的生物产率较低,形成于常氧环境;含泥质灰岩部分的生物产率明显较高,形成于缺氧环境.这种生物产率和沉积环境古氧相随韵律层规律性的变化,证实生物产率是导致栖霞组有机质质量分数变化的主要原因.
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| 关 键 词： | 栖霞组 灰岩-含泥灰岩韵律层 生物产率 古氧相 |
Productivity of Limestone-Marl Rhythms of Permain Chihsia Formation in Wuhan |
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| BAO Han-yong,MA Zhong-wu,HU Chao-yong,YAN Jia-xin. Productivity of Limestone-Marl Rhythms of Permain Chihsia Formation in Wuhan[J]. Geological Science and Technology Information, 2009, 28(2) |
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| Authors: | BAO Han-yong MA Zhong-wu HU Chao-yong YAN Jia-xin |
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| Affiliation: | a.Graduate School;b.Key Laboratory of Biogeology and Environmental Geology ofMinistry of Education;China University of Geoscineces;Wuhan 430074;China |
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| Abstract: | The paper selects biologic Ba,biologic Al and Al/Ti ratio as indicators of the rhythm of the productivity change,and V/(V+Ni),V/Cr and Mo as indicators of paleoxygenation facies in such study.The results show that in the limestone-marl rhythms of Permain Chihsia Formation in Wuhan,productivity is low in the limestone proportion,formed in aerobic environment,and it is high in the marl proportion,formed in oxygen deficient environment.The changes of productivity and paleoxygenation facies in the limestone-mar... |
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| Keywords: | Chihsia Formation limestone-marl rhythm productivity paleoxygenation facies |
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