| 藏北安多—巴青地区侏罗纪含礁层系岩相及沉积环境 |
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| 引用本文： | 龚文平,肖传桃,胡明毅,李艺斌,柳书兵.藏北安多—巴青地区侏罗纪含礁层系岩相及沉积环境[J].地质科学,2006,41(3):479-488. |
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| 作者姓名： | 龚文平 肖传桃 胡明毅 李艺斌 柳书兵 |
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| 作者单位： | 1. 长江大学地球科学学院, 湖北荆州, 434023;2. 中国地质大学地球科学学院, 武汉, 430074;3. 中国石油化工股份有限公司江汉油田分公司井下作业处, 湖北潜江, 433123 |
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| 摘 要： | 根据岩性及其组合特征,本文将西藏北部安多—巴青地区侏罗纪含礁地层划分为流水成因的颗粒岩岩相、流水成因的碎屑岩岩相、复成因的泥晶—泥质灰岩岩相、生物及生物化学成因的障积岩岩相、生物及生物化学成因的粘结—障积岩岩相和生物及生物化学成因的骨架岩岩相等6大类型,计16种岩相。它们构成了潮坪相组合、台地浅滩相组合、开阔台地相组合和台地生物礁相组合共4种岩相组合,并由下而上有规律地形成2种岩相序列,即陆源碎屑与碳酸盐混合台地相序列和碳酸盐台地相序列。
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| 关 键 词： | 生物礁 岩相 岩相组合 沉积环境 西藏北部 |
| 文章编号： | 0563-5020（2006）03-0479-10 |
| 收稿时间： | 2005-01-04 |
| 修稿时间： | 2005-03-07 |
FACIES AND ENVIRONMENTS OF JURASSIC REEF-BEARING STRATA IN ANDUO-BAQING AREA, NORTHERN XIZANG(TIBET) |
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| Gong Wenping,Xiao Chuantao,Hu Mingyi,Li Yibin,Liu Shubing.FACIES AND ENVIRONMENTS OF JURASSIC REEF-BEARING STRATA IN ANDUO-BAQING AREA, NORTHERN XIZANG(TIBET)[J].Chinese Journal of Geology,2006,41(3):479-488. |
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| Authors: | Gong Wenping Xiao Chuantao Hu Mingyi Li Yibin Liu Shubing |
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| Institution: | 1. College of Geosciences, Yangtze University, Jingzhou, Hubei 434102;2. China University of Geosciences, Wuhan 430074;3. Jianghan Oilfield Branch Company, China Petroleum & Chemical Corp., Qianjiang, Hubei 433123 |
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| Abstract: | Based on the characteristics of lithologies and rock associations, the Jurassic reef-bearing strata in Anduo—Baqing area, northern Xizang (Tibet), could be classified into 6 groups of lithofacies: water current genetic grainstone, water current genetic clastic rock, polygenetic micritic limestone and marl, biogenetic and biochemical genetic baffling rock, biogenetic and biochemical genetic cemented-baffling rock, as well as biogenetic and biochemical genetic framestone. These lithofacies made up four kinds of lithofacies associations: tide plat, open platform, platform shoal and platform reef ones. The four lithofacies associations constituted two depositionary successions in ascending order, namely, the succession of mixed carbonate-terrigenous platform lithofacies and succession of carbonate rock platform lithofacies. Both of them indicated a relatively stable tectonic setting of shallow marine platform, different from the lithofacies associations and sedimentation of back-arc basin in Early Cretaceous. |
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| Keywords: | Reef Lithofacies Lithofacies Associations Depositional environment Northern Xizang (Tibet) |
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