| REDOX VARIATIONS OF THE ANCIENT OCEAN IN THE WESTERN MARGIN OF THE TARIM BASIN——THE EVIDENCE FROM Ce ANOMALIES OF MARINE SHELL FOSSILS |
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| 引用本文： | 吴明清,欧阳自远,宋云华,蓝琇,杨学长,毛雪瑛,柴之芳.REDOX VARIATIONS OF THE ANCIENT OCEAN IN THE WESTERN MARGIN OF THE TARIM BASIN——THE EVIDENCE FROM Ce ANOMALIES OF MARINE SHELL FOSSILS[J].中国科学B辑(英文版),1992(9). |
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| 作者姓名： | 吴明清 欧阳自远 宋云华 蓝琇 杨学长 毛雪瑛 柴之芳 |
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| 作者单位： | Institute of Geochemistry，Academia Sinica，Guiyang 850002，PRC，Institute of Geochemistry，Academia Sinica，Guiyang 850002，PRC，Institute of Geochemistry，Academia Sinica，Guiyang 850002，PRC，Nanjing Institute of Geology and Palaeontology，Academia Sinica，Nanjing 210008，PRC，Nanjing Institute of Geology and Palaeontology，Academia Sinica，Nanjing 210008，PRC，Institute of High Energy Physics，Academia Sinica，Beijing 100080，PRC，Institute of High Energy Physics，Academia Sinica，Beijing 100080，PRC |
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| 摘 要： | Two episodes of paleoredox fluctuation variation are indicated in some localities in thelate Cretaceous--early Tertiary ocean of western Tarim recorded by REE distribution patterns,Ce anomalies, and Th/U ratios from systematic studies on the chemical composition, withspecial reference to REE and 20 trace elements, based on 11 marine shell fossils occurringin the Upper Cretaceous--Lower Tertiary strata of the western Tarim Basin, Xinjiang. Thefactors Controlling the redox fluctuation may be probably caused by shifting places ofsurface runoff put into the sea as a result of transgression and regression.
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