| Permian/Triassic Boundary and Its Correlation in the Daxian-Xuanhan Area, Northeastern Sichuan Province, China |
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| 作者姓名： | MA Yongsheng MOU Chuanlong TAN Qinyin YU Qian WANG Ruihua |
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| 作者单位： | Southern Exploration & Development Company, SINOPEC, Kunming, Yunnan 650200;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082;Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082 |
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| 基金项目： | This study was sponsored by the Southern Exploration & Development Company; SINOPEC through research programs “Sedimentary Evolution and Its Control on Oil and Gas in the Sichuan Basin” and “High Resolution Sedimentary Facies, Sequence Stratigraphy and Re |
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| 摘 要： | There are different opinions about the Permian/Triassic boundary and its correlation in the Daxian-Xuanhan area because of lacking typical lithological symbols and fossil criterions. Especially, it is very hard to determine the Permian/Triassic boundary in the Daxian-Xuanhan buried areas. This brings many difficulties to geological research and oil and gas exploration. Based on field investigation and studies of well cores, newly found fossils, lithological characteristics and well log analyses, the authors discussed the Permian/Triassic boundary in the Daxian-Xuanhan area and brought forward a specific scheme for its determination and regional correlation.
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| 关 键 词： | 二叠纪 三叠纪 达县-宣汉地区 地质特征 四川 |
| 收稿时间： | 2007/3/20 0:00:00 |
| 修稿时间： | 6/6/2007 12:00:00 AM |
Permian/Triassic Boundary and Its Correlation in the Daxian-Xuanhan Area, Northeastern Sichuan Province, China |
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| Authors: | MA Yongsheng MOU Chuanlong TAN Qinyin YU Qian WANG Ruihua |
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| Institution: | [1]Southern Exploration ＆ Development Company, SINOPEC, Kunming, Yunnan 650200; [2]Chengdu Institute of Geology and Mineral Resources, Chengdu, Sichuan 610082 |
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| Abstract: | There are different opinions about the Permian/Triassic boundary and its correlation in the Daxian-Xuanhan area because of lacking typical lithological symbols and fossil criterions.Especially,it is very hard to determine the Permian/Triassic boundary in the Daxian-Xuanhan buried areas.This brings many difficulties to geological research and oil and gas exploration.Based on field investigation and studies of well cores,newly found fossils,lithological characteristics and well log analyses,the authors discussed the Permian/Triassic boundary in the Daxian-Xuanhan area and brought forward a specific scheme for its determination and regional correlation. |
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| Keywords: | Permian/Triassic boundary correlation Daxian-Xuanhan area |
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