| 牙形石微量元素对生物绝灭事件的响应: 以二叠-三叠系全球层型剖面第一幕绝灭事件为例 |
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| 引用本文： | 赵来时,吴元保,胡兆初,周炼,刘勇胜,史玉芳,张素新,童金南,袁鹏.牙形石微量元素对生物绝灭事件的响应: 以二叠-三叠系全球层型剖面第一幕绝灭事件为例[J].地球科学,2009,34(5):725-732. |
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| 作者姓名： | 赵来时 吴元保 胡兆初 周炼 刘勇胜 史玉芳 张素新 童金南 袁鹏 |
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| 作者单位： | 中国地质大学地质过程与矿产资源国家重点实验室, 湖北武汉 430074 |
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| 基金项目： | 国家自然科学基金(Nos.40872003,40673020);;国家自然科学基金重点项目(No.90714010);;国家自然科学基金创新研究群体项目(No.40621002);;地质过程与矿产资源国家重点实验室科技部专项资金 |
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| 摘 要： | 首次系统地利用浙江长兴煤山剖面牙形石化石, 依托中国地质大学(武汉) 地质过程与矿产资源国家重点实验室激光剥蚀等离子体质谱仪(LA-ICP-MS) 获取牙形石微区原位元素含量信息.结果显示, 牙形石的Ce异常和稀土总量出现快速的波动, 它们均反映出P/T之交环境(氧化-还原、生态条件等) 的不稳定性.这些微量元素特征可以很好地与古海洋环境和生物绝灭事件耦合.这一研究将为系统探索全球古生代末生物大灭绝及其后生物复苏的过程、时限与古海洋化学及古生态变化性质等问题的研究提供新的途径, 并有望对这些重要科学问题提供有效的制约.
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| 关 键 词： | 牙形石 微量元素 原位 生物绝灭事件 激光剥蚀等离子体质谱仪 |
| 收稿时间： | 2009-02-10 |
Trace Element Compositions in Conodont Phosphates Responses to Biotic Extinction Event:A Case Study for Main Act of Global Boundary Stratotype Section and Point of the Permian-Triassic |
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| ZHAO Lai-shi,WU Yuan-bao,HU Zhao-chu,ZHOU Lian,LIU Yong-sheng,SHI Yu-fang,ZHANG Su-xin,TONG Jin-nan,YUAN Peng State Key Laboratory of Geological Processes , Mineral Resources,China University of Geosciences,Wuhan,China.Trace Element Compositions in Conodont Phosphates Responses to Biotic Extinction Event:A Case Study for Main Act of Global Boundary Stratotype Section and Point of the Permian-Triassic[J].Earth Science-Journal of China University of Geosciences,2009,34(5):725-732. |
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| Authors: | ZHAO Lai-shi WU Yuan-bao HU Zhao-chu ZHOU Lian LIU Yong-sheng SHI Yu-fang ZHANG Su-xin TONG Jin-nan YUAN Peng State Key Laboratory of Geological Processes Mineral Resources China University of Geosciences Wuhan China |
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| Institution: | ZHAO Lai-shi,WU Yuan-bao,HU Zhao-chu,ZHOU Lian,LIU Yong-sheng,SHI Yu-fang,ZHANG Su-xin,TONG Jin-nan,YUAN Peng State Key Laboratory of Geological Processes , Mineral Resources,China University of Geosciences,Wuhan430074,China |
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| Abstract: | Trace element compositions in Upper Permian conodonts with low color alteration index were measured in situ by laser ablation-inductively coupled plasma-mass spectrometry(LA-ICP-MS)from a stratigraphic section of the Meishan in Changxing,Zhejiang Province.The results show that the Ce anomalies and rare earth element(REE)concentrations are characterized by fast fluctuation.These features indicate highly fluctuating environmental conditions including redox and instable ecosystem conditions during the P/T tran... |
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| Keywords: | condont trace element in situ biotic extinction event LA-ICP-MS |
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