| 青藏高原通天河盆地五道梁组介形虫壳体Mg/Ca和Sr/Ca地球化学特征及古环境意义 |
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| 引用本文： | 杨红梅.青藏高原通天河盆地五道梁组介形虫壳体Mg/Ca和Sr/Ca地球化学特征及古环境意义[J].成都理工大学学报(自然科学版),2009,36(3). |
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| 作者姓名： | 杨红梅 |
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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,北京,100083 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，财政部国家油气专项课题 |
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| 摘 要： | 中新世早期青藏高原腹地曾经发育了面积巨大的古大湖,此时恰逢青藏高原的快速隆升关键时期.为研究高原腹地在此期间环境的演化,对五道梁组中介形虫壳体的Mg/Ca 和Sr/Ca的值进行了测试.通天河盆地五道梁组地层中的介形虫壳体的Mg/Ca 和Sr/Ca数值的特征,结合剖面岩性特征,反映了23.8～21.8 Ma前该湖泊区域气候由湿润-干旱-暖湿的演化趋势.其气候的变化可能是此时期青藏高原从快速隆升到剥蚀夷平后高原北部构造隆升活动的结果.该研究为进一步了解青藏高原腹地的古环境探索了一条新的途径.
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| 关 键 词： | 介形虫 Mg/Ca和Sr/Ca 古湖泊 中新世早期 全球变化 青藏高原隆升 |
The palaeolimnological record from Northern Tibet based on trace element chemistry of ostracod shells and the paleoenvironment implication in Tongtianhe basin,Tibet,China |
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| YANG Hong-mei.The palaeolimnological record from Northern Tibet based on trace element chemistry of ostracod shells and the paleoenvironment implication in Tongtianhe basin,Tibet,China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2009,36(3). |
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| Authors: | YANG Hong-mei |
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| Institution: | YANG Hong-meiState Key Laboratory of Geological Processes , Mineral Resources,China University of Geosciences,Beijing 100083,China |
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| Abstract: | The extensive distribution of lacustrine strata of the Wudaoliang Group indicates a durative,stable paleolake environment in the interior of the Tibetan Plateau during early of Miocene period.To understand the evolution of the environment of the interior of the Tibetan Plateau during this period,the content Mg/Ca and Sr/Ca of ostracod shells from the Wudaoliang Group has been measured.The characteristic of Mg/Ca and Sr/Ca of ostracod shell geochemistry and sedimentology of the measured section located in th... |
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| Keywords: | ostracod Mg/Ca and Sr/Ca lacustrine deposits Wudaoliang Group early of Miocene global change plateau uplift |
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