| 柴达木盆地西部红柳泉地区晚侏罗世介形类动物群及其古环境意义 |
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| 引用本文： | 杨平,葛子琛,曾妮,王亚琼.柴达木盆地西部红柳泉地区晚侏罗世介形类动物群及其古环境意义[J].微体古生物学报,2022(1):57-69. |
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| 作者姓名： | 杨平 葛子琛 曾妮 王亚琼 |
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| 作者单位： | ;1.中国石油青海油田公司勘探开发研究院;2.现代古生物学和地层学国家重点实验室中国科学院南京地质古生物研究所;3.成都理工大学沉积地质研究院 |
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| 摘 要： | 在柴达木盆地红柳泉地区红探2井红水沟组中识别出介形类化石3属9种(含2个未定种):Cetacella qaidamensis Li et Yang, 1983、Djungarica tracta Li et Yang, 1983、Djungarica sp.、Alicenula incurva (Bate, 1967)、?A.longicylindrica (Qi, 1985)、A. paramagna (Li et Yang, 1983)、A. maanshanensis (Hou et al., 2002)、A. jinhuaensis (Li,1984)、Alicenula sp.。通过介形类化石生物地层对比,明确红水沟组的沉积时代为晚侏罗世。红水沟组介形类动物群指示晚侏罗世柴达木地区发育淡水湖泊、河流以及季节性的小水塘。
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| 关 键 词： | Cetacella Alicenula Darwinulocopine 淡水 河湖相 红水沟组 红探2井 |
LATE JURASSIC OSTRACOD FAUNA FROM THE HONGLIUQUAN AREA OF THE TSAIDAM BASIN AND ITS PALAEOENVIRONMENTAL SIGNIFICANCE |
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| Institution: | ,Research Institute of Petroleum Exploration and Development,Petro China Qinghai Oilfield Company,State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences,Institute of Sedimentary Geology, Chengdu University of Technology |
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| Abstract: | Nine ostracod species belonging to three genera have been recovered from the Hongshuigou Formation of Well HT-2 in Hongliuquan area of the Tsaidam Basin: Cetacella qaidamensis Li et Yang, 1983, Djungarica tracta Li et Yang, 1983, Djungarica sp., Alicenula incurva(Bate, 1967), ?A. longicylindrica(Qi, 1985), A. paramagna(Li et Yang, 1983), A. maanshanensis(Hou et al., 2002), A. jinhuaensis(Li, 1984), and Alicenula sp. The ostracod biostratigraphic correlations suggest that the age of the Hongshuigou Formation is the Upper Jurassic. The ostracod fauna from the Hongshuigou Formation indicates a shallow lacustrine to fluvial environment and potentially including small ephemeral water body environment in Tsaidam area during the Upper Jurassic. |
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| Keywords: | Cetacella Alicenula Darwinulocopine Freshwater Fluvial-lacustrine environment Hongshuigou Formation Well HT-2 |
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