| 新疆柯坪大湾沟剖面柯坪塔格组中段底部笔石生物地层初步分析 |
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| 引用本文： | 江大勇,皮学军,孙作玉,陈颖,吴飞翔,郝维城.新疆柯坪大湾沟剖面柯坪塔格组中段底部笔石生物地层初步分析[J].地层学杂志,2006,30(3):253-257. |
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| 作者姓名： | 江大勇 皮学军 孙作玉 陈颖 吴飞翔 郝维城 |
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| 作者单位： | 1. 北京大学地质学系,北京,100871
2. 中国石油勘探开发研究院,北京,100083 |
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| 摘 要： | 新疆塔里木盆地西北缘柯坪大湾沟剖面柯坪塔格组中段底部的泥岩夹白云岩地层中发现有较丰富的笔石、腕足类、三叶虫、双壳类等化石,其中笔石有4属8种及2个比较种和1个未定种,可能属笔石Coronograptuscyphus带至Coronograptusgregarius带。从笔石生物地层看,柯坪塔格组中段底部的时代很可能为志留纪兰多维列世鲁丹期末至埃隆期初。
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| 关 键 词： | 笔石生物地层 志留系 柯坪塔格组 大湾沟 新疆 |
| 文章编号： | 0253-4959(2006)03-0253-05 |
| 收稿时间： | 03 1 2006 12:00AM |
| 修稿时间： | 04 28 2006 12:00AM |
REPORT ON GRAPTOLITE BIOSTRATIGRAPHY OF THE BASAL PART OF THE MIDDLE MEMBER OF THE KEPINGTAGE FORMATION AT DAWANGOU SECTION, KEPING, XINJIANG |
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| JIANG Da-yong,PI Xue-jun,SUN Zuo-yu,CHEN Ying,WU Fei-xiang,HAO Wei-cheng.REPORT ON GRAPTOLITE BIOSTRATIGRAPHY OF THE BASAL PART OF THE MIDDLE MEMBER OF THE KEPINGTAGE FORMATION AT DAWANGOU SECTION, KEPING, XINJIANG[J].Journal of Stratigraphy,2006,30(3):253-257. |
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| Authors: | JIANG Da-yong PI Xue-jun SUN Zuo-yu CHEN Ying WU Fei-xiang HAO Wei-cheng |
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| Institution: | 1. Department of Geology, Peking University, Beijing , 100871; 2. Research Institute of Petroleum Exploration and Development, CNPC, Beijng, 100083 |
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| Abstract: | The basal part of the Middle Member of the Kepingtage Formation at the Dawangou Section (Keping County) in the Tarim Basin of Xinjiang yields abundant graptolites, brachiopods, trilobites, and bivalves in its mudstone and dolostone. Four graptolite genera, with eight species and two open-nomenclature species, have been recognized. These fossils indicate an age of the Coronograptus cyphus graptolite Biozone to the Coronograptus gregarious graptolite Biozone. Thus, the basal part of the Middle Member of the Kepingtage Formation is probably latest Rhuddanian to earliest Aeronian(Llandovery) in age. |
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| Keywords: | Graptolite biostratigraphy Silurian Kepingtage Formation Dawangou Xinjiang |
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