| 对西天山石炭纪地层及生物群的一些认识 |
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| 引用本文： | 张建东.对西天山石炭纪地层及生物群的一些认识[J].新疆地质,2012,30(Z1):38-44. |
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| 作者姓名： | 张建东 |
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| 作者单位： | 新疆维吾尔自治区地质矿产勘查开发局第一区域地质调查大队,新疆 乌鲁木齐,830013 |
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| 基金项目： | 新源县幅、喀赞其幅1:25万区域地质调查项目资助 |
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| 摘 要： | 据前人资料结合1∶25万区调新资料研究成果,对西天山石炭纪典型岩石地层单位及时代、基本特征形成一些新的认识.对新疆北部石炭系腕足“管孔石燕动物群”、“安加拉植物群”及腕足“拟穆武贝动物群”的分布范围、生物区系意义进行总结和讨论.利用多年来西天山陆续发现的菊石化石,建立了本区7个石炭纪菊石带,并结合“R带”为主的菊石化石资料对西天山上、下石炭统年代界线进行讨论.
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| 关 键 词： | 西天山 石炭系 生物群 菊石带 |
Some Understandings about Carboniferous Strata and Biota of Western Tianshan,Xinjiang |
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| ZHANG Jian-dong.Some Understandings about Carboniferous Strata and Biota of Western Tianshan,Xinjiang[J].Xinjiang Geology,2012,30(Z1):38-44. |
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| Authors: | ZHANG Jian-dong |
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| Institution: | ZHANG Jian-dong(The First Geological Survey Party,Xinjiang Bureau of Geology and Mineral Exploration and Development,Urumqi,Xinjiang,830013,China) |
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| Abstract: | Based on the regional geological data that completed so many years especially new materials of recent years,this article mainly deal with the carboniferous lithostratigraphic units,biota and ammonoids zone of western Tianshan.Three typical carboniferous biota of "northern type",early carboniferous "Syringothyris fauna",late carboniferous "Angara flora",late carboniferous "Paramuirwoodia fauna",and theirs distribution are discussed in this peper.Acoding to some important ammonoids have been discovered last decades,severn ammonoids zone can be recognized,they are Dzhaprakocera(Akesahkeceras)Zone,Beyrichoceras-Goniatites Zone,Platygoniatites zone,Homoceras Zone,Reticuloceras Zone,Diaboloceras Zone and Paralegoceras Zone.The lower and upper carboniferous boundary should be drawn at the middle of Homoceras and Reticuloceras zone. |
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| Keywords: | Western Tianshan Carboniferous Biota Ammonoids Zone |
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