Late Guadalupian (Middle Permian) Fusuline Fauna from the Xiala Formation in Xainza County, Central Tibet: Implication of the Rifting Time of the Lhasa Block
Late Guadalupian (Middle Permian) Fusuline Fauna from the Xiala Formation in Xainza County, Central Tibet: Implication of the Rifting Time of the Lhasa Block
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DOI：
10.1666/10-005.1
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Yi‐chun Zhang;Liren Cheng;S. Shen
中科院分区：
文献类型：
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作者：
Yi‐chun Zhang;Liren Cheng;S. Shen
fusuline动物群以Nankinella和Chusenella为主，属于middian（晚瓜达鲁普世）时代。拉萨地块米甸期最早的fusuline动物群记录表明，该地块北起裂晚于羌塘地块，东起裂晚于宝山和腾冲地块，均产生了更早的Yakhtashian （Artinskian）时代的fusuline动物群，但在晚瓜达鲁普期（中二叠世）从冈瓦纳向相对温暖的温带漂移。
Abstract A fusuline fauna consisting of 9 species of 4 genera from the Xiala Formation of the Mujiucuo section, Xainza County, Tibet, China is described. The fusuline fauna is dominated by Nankinella and Chusenella and indicates a Midian (Late Guadalupian) age. The earliest record of fusuline fauna during the Midian in the Lhasa Block suggests that the block rifted later than the Qiangtang Block to the north and the Baoshan and Tengchong blocks to the east, all of which yield much earlier fusuline faunas of Yakhtashian (Artinskian) age, but had drifted away from Gondwana to a relatively warm temperate zone in the Late Guadalupian (Middle Permian).