Discovery and geological significance of the Permian sporopollen fossils from Daftar,Taxkorgan, Xinjiang
Yao Jianxin Xiao Xuchang Gao Lianda Wang Naiwen Ji Wenhua Wang Shiyan Wang Yong Chi Zhenqing
1 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037
2 Academy of Regional Geology and Minerals Research, Bureau of Geology and Mineral Resources of Shaanxi Province, Xianyang 712000, Shaanxi
3 Regional Geological Survey Party, Bureau of Geology and Mineral Resources of Henan Province, Pingdingshan 467021, Henan
Abstract Tectonically located in the West Kunlun-Karakorum orogenic belt at the junction between the Indian plate and the Eurasian plate, the Daftar area, Taxkorgan County, Xinjiang Uygur Autonomous Region, is one of the most important regions for the research on geological evolution of the Karakorum-Kunlun Mountains. Located in the heavily cool annoxic area in abdomen of central Asia, natural conditions of the West Kunlun-Karakorum area are very bad, transportation is inconvenient and field geological survey and research are grearly difficult. Because the regional geology of the area is less studied, the Permian microfossil was never reported from the sedimentary strata there. After geological survey and research, the Permian sporopollen fossils: Endosporites punctatus Gao, Wilsonites delicatus (Kosanke) Kosanke,Cordaitina spongiosa (Luber) Samolovich, Alisporites mathalensis Clarke, Sulcatisporites ovatus (Balme and Hennelly) Balme were found in the Daftar area recently. According to the analysis on their combination features, the sporopollen fossils mentioned above basically belong to types of the Cathaysia flora realm. Based on researches on evidences of the Permian sporopollen fossils and data of previously published biostratigraphy and isotopic geochronology, the authors consider that the strata of clastic sedimentation in Daftar area, which was put into the Permian previously, may be the mélange which is composed of the Silurian and the Permian as well as other age layers.
About author: Yao Jianxin, born in 1953, was graduated from the Geology Department of Peking University in 1977,and received his Ph. D. degree in 1990. Now he is a professor of the Institute of Geology of Chinese Academy of Geological Sciences, and is engaged in stratigraphy, paleontology and paleoecology. Tel: 0086-010-68999706, Fax: 0086-010-68997803, E-mail: yaojianxin@ccsd.org.cn
Cite this article:
. Discovery and geological significance of the Permian sporopollen fossils from Daftar,Taxkorgan, Xinjiang[J]. JOURNAL OF PALAEOGEOGRAPHY, 2005, 7(3): 321-326.
. Discovery and geological significance of the Permian sporopollen fossils from Daftar,Taxkorgan, Xinjiang[J]. JOPC, 2005, 7(3): 321-326.