| 羌塘盆地那底岗日地区中侏罗世层序地层与碳、氧、锶同位素响应 |
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| 引用本文： | 谢渊,王剑,刘家铎,罗建宁,张哨楠,杨宝星,李明辉.羌塘盆地那底岗日地区中侏罗世层序地层与碳、氧、锶同位素响应[J].沉积学报,2002,20(2):188-196. |
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| 作者姓名： | 谢渊 王剑 刘家铎 罗建宁 张哨楠 杨宝星 李明辉 |
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| 作者单位： | 1.成都理工大学 成都 610059; |
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| 基金项目： | 中国石油天然气总公司资助项目，， |
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| 摘 要： | 羌塘盆地那底岗日地区中侏罗世沉积了一套稳定的滨浅海相碳酸盐岩与碎屑岩地层,通过层序地层研究划分出五个三级层序。对其中四个层序内碳酸盐岩碳、氧、锶稳定同位素测试分析得出,不同层序、层序界面及层序内不同体系域的δ13 C、δ180、N(87Sr/86Sr)值均有明显的差异,并具规律性变化,整体上反映出研究区中侏罗世发生了多次海平面升降变化和气候、构造活动的演变,为层序地层研究提供了定量的地质地球化学依据。
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| 关 键 词： | 那底岗日地区 中侏罗世 层序地层 碳、氧、锶同位素响应 |
| 文章编号： | 1000-0550(2002)02-0188-09 |
| 收稿时间： | 2001-12-24 |
| 修稿时间： | 2001年12月24日 |
Carbon,Oxygen and Strontium Isotopic Responses of Carbonate Rocks and the Middle Jurassic Squence Stratigraphy in the Nadigangri Area,Qiangtang Basin |
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| XIE Yuan , WANG Jian LIU Jia-duo LUO Jian-ning ZHANG Shao-nan YANG Bao-xing LI Ming-hui.Carbon,Oxygen and Strontium Isotopic Responses of Carbonate Rocks and the Middle Jurassic Squence Stratigraphy in the Nadigangri Area,Qiangtang Basin[J].Acta Sedimentologica Sinica,2002,20(2):188-196. |
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| Authors: | XIE Yuan WANG Jian LIU Jia-duo LUO Jian-ning ZHANG Shao-nan YANG Bao-xing LI Ming-hui |
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| Institution: | 1.Chengdu instit ute of geology and mineral resources, Chengdu 610082;2.Chengdu university of technology, Chengdu 610059 |
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| Abstract: | A series of steady carbonate and clastic rocks of coastal-shallow sea facies were deposited in the Nadigangri area,Qiangtang Basin,during the middle Jurassic. The middle Jurassic can be divided into five 3rd-graded sequences through sequence interpretation . On the basis of C, O and Sr isotopic compositions of four of those, δ13 C、δ180、N(87Sr/86Sr) values are all of distinct difference and regularity among different sequences, sequence boundaries and systems stracts. It is suggested that the going up and down of sea level occurred many times and the climate and tectonics change during the middle Jurassic, which controlled the formation and evolution of the middle Jurassic sequences. As a result, C, O and Sr isotopes can provide some quantitative geological and geochemical evidence for analyzing the middle Jurassic sequence. |
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| Keywords: | Nadigangri Area middle Jurassic sequence stratigraphy C O and Sr isotopic reponses |
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