| Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Qangtang Basin, Xizang （Tibet）, China |
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| 引用本文： | 王兴涛,翟世奎,柳彬德,周书欣.Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Qangtang Basin, Xizang （Tibet）, China[J].中国海洋与湖沼学报,2004,22(4):356-364. |
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| 作者姓名： | 王兴涛 翟世奎 柳彬德 周书欣 |
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| 作者单位： | [1]InstituteofMarineGeoscience,OceanUniversityofChina,Qingdao266003,China [2]EconomicAdministrationDepartmentofQinhuangdaoInstitute,NortheastUniversity,Qinhuangdao066000,China [3]QinhuangdaoBranch,DaqingPetroleumInstitute,Qinhuangdao066004,China |
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| 基金项目： | Sponsored by National Ninth Five Year Plan Science and Technology Project (970204-01-01). |
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| 摘 要： | The largest Mesozoic northward transgression in Qangtang Basin of Qinghai-Xizang (Tibet) Plateau occurred during the Buqu Stage, Middle Jurassic. Mainly filled with carbonate rocks, the whole basin is composed of transgression-regression sedimentary cycle. Field outcrops and indoor analysis revealed 8 types of sedimentary facies markers in this region. 4 types of sedimentary facies have been recognized: platform facies,platform marginal facies, foreslope facies and basin facies. Influenced by the northern Lazhuglung-Jinshajiang suture zone, central uplift region and southern Bangongco-Nujiang suture zone, these facies belts extended east-west. The sedimentary model was established based on observed depositional features. From their biological features and sedimentary characteristics, it is suggested that the paleoclimate was warm and humid at that time.The Buqu Formation is a promising target for oil and gas exploration in Shuanghu-Duoyong area in future.
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| 关 键 词： | 沉淀模型 天然气资源 沉积特征 青海-西藏板块 地质框架 |
Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Qangtang Basin, Xizang (Tibet), China |
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| WANG Xingtao,ZHAI Shikui,LIU Binde? ZHOU Shuxin?.Depositional features and sedimentary model of Buqu Stage in Mid-Jurassic in Qangtang Basin, Xizang (Tibet), China[J].Chinese Journal of Oceanology and Limnology,2004,22(4):356-364. |
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| Authors: | WANG Xingtao ZHAI Shikui LIU Binde? ZHOU Shuxin? |
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| Abstract: | The largest Mesozoic northward transgression in Qangtang Basin of Qinghai-Xizang (Tibet) Plateau occurred during the Buqu Stage, Middle Jurassic. Mainly filled with carbonate rocks, the whole basin is composed of transgression-regression sedimentary cycle. Field outcrops and indoor analysis revealed 8 types of sedimentary facies markers in this region. 4 types of sedimentary facies have been recognized: platform facies, platform marginal facies, foreslope facies and basin facies. Influenced by the northern Lazhuglung-Jinshajiang suture zone, central uplift region and southern Bangongco-Nujiang suture zone, these facies belts extended east-west. The sedimentary model was established based on observed depositional features. From their biological features and sedimentary characteristics, it is suggested that the paleoclimate was warm and humid at that time. The Buqu Formation is a promising target for oil and gas exploration in Shuanghu-Duoyong area in future. |
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| Keywords: | Xizang(Tibet) Qangtang Basin Buqu Formation depositional features sedimentary model |
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