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ZHANG Jinpeng, DENG Xiguang, YANG Shengxiong, HE Gaowen, ZHU Benduo. 2015: Diatom ooze found in 7000m submarine area of Challenger Depth in Mariana Trench. Geological Bulletin of China, 34(12): 2352-2354.
Citation: ZHANG Jinpeng, DENG Xiguang, YANG Shengxiong, HE Gaowen, ZHU Benduo. 2015: Diatom ooze found in 7000m submarine area of Challenger Depth in Mariana Trench. Geological Bulletin of China, 34(12): 2352-2354.
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Diatom ooze found in 7000m submarine area of Challenger Depth in Mariana Trench

  • Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, Guangdong, China;2. University of Szczecin, Institute of Marine and Coastal Sciences, Faculty of Geosciences, Szczecin 70-383, Poland;3. Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 510760, Guangdong, China

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  • The diatom ooze sediments were collected for the first time by the Chinese research vessel in 7000m water depth of the Mariana Trench, which is the experimental area of Jiaolong human occupied vehicle. Diatomological analyses show that sediments of about 10cm thickness in the core top are Ethmodiscus rex ooze. The fossil diatoms are dominated by large quantities of the Ehomodiscus rex with fragment status, accompanied by a few tropical open ocean planktonic species, e.g., Azpeitia. The diatom ooze in this deep region genetically indicates that the E. rex bloomed very fast in the geological history, and had important significance for the study of palaeoceanography and micropalaeontology.
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