| 西藏尼玛地区油气显示的发现及其意义 |
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| 引用本文： | 蒋忠惕,张家强,王德杰.西藏尼玛地区油气显示的发现及其意义[J].地质通报,2006(Z2). |
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| 作者姓名： | 蒋忠惕 张家强 王德杰 |
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| 作者单位： | 中国地质调查局实物地质资料中心 河北三河燕郊065201(蒋忠惕)，中国地质调查局发展研究中心 北京100037(张家强，王德杰) |
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| 基金项目： | 国家油气专项之《青藏高原油气资源战略选区调查及评价》课题(编号:XQ-2004-06)部分成果。 |
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| 摘 要： | 2005年度,在《青藏高原油气资源战略选区调查及评价》项目的陆相第三系盆地野外地质调查过程中,在尼玛县城关(折章)东约90～100km、老尼玛区(现名为措罗镇)南约10～12km处,发现了许多含有沥青脉的坡积、洪积砂砾岩转石。经进一步追索还证实,该区北侧出露有与伦坡拉盆地牛堡组下段地层相当的灰色、灰绿色、黄灰色泥页岩夹薄板状含灰质泥岩和泥灰岩夹层的地层。在这套地层的灰色泥岩节理面上发育有许多沥青薄膜。尼玛地区第三系地层的发育证实了该区依然发育有新生界的沉积盆地,油气显示在该区的发现则证实了该区发育有含油气盆地。从而突破了在青藏高原上陆相第三系盆地中寻找油气资源被局限在伦坡拉盆地中东部概念的束缚,扩大了第三系盆地中寻找油气资源的领域和前景。
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| 关 键 词： | 青藏高原 陆相第三系盆地 油气资源 战略选区 尼玛盆地 油气显示 |
Discovery of oil-gas shows in the Nyima area,Tibet,China and its significance |
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| JIANG Zhong-ti,ZHANG Jia-qiang,WANG De-jie . Geological Material Center,China Geological Survey,Yanjiao ,Sanhe,Hebei,China, . R & D Center,China Geological Survey,Beijing ,China.Discovery of oil-gas shows in the Nyima area,Tibet,China and its significance[J].Geologcal Bulletin OF China,2006(Z2). |
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| Authors: | JIANG Zhong-ti ZHANG Jia-qiang WANG De-jie Geological Material Center China Geological Survey Yanjiao Sanhe Hebei China R & D Center China Geological Survey Beijing China |
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| Institution: | JIANG Zhong-ti1,ZHANG Jia-qiang2,WANG De-jie2 1. Geological Material Center,China Geological Survey,Yanjiao 065201,Sanhe,Hebei,China, 2. R & D Center,China Geological Survey,Beijing 100037,China |
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| Abstract: | In 2005, many eluvial and diluvial sandstone and conglomerate floats containing bituminous veins have been found about 90-100 km east of the seat of Nyima County (Zhezhang) and about 10-12 km south of the old Nyima district (now Cuoluo Township) during the field geological survey of the Tertiary terrestrial basin under the project of the Investigation and Evaluation of Petroleum Resources Strategic Areas on the Qinghai-Tibet Plateau. Further tracing also demonstrates that to the north of the area there outcrop gray, grayish green and yellowish gray mudstone-shale with thin-platy lime mudstone and marlstone intercalations, which are equivalent to the Lower Member of the Niubao Formation in the Lunpola basin. Many bituminous membranes are developed on joint planes of gray mudstone of the strata. The development of Tertiary strata in the Nyima area demonstrates that a Cenozoic sedimentary basin still occurs in the area and the discovery of oil-gas shows in the area verifies that a petroleum-bearing basin occurs in the area, thus breaking with the yoke of the concept that petroleum finding in Tertiary terrestrial basins on the Qinghai-Tibet Plateau is restricted to the east-central part of the Lunpola basin and expanding the scope and prospects of petroleum finding in Tertiary basins. |
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| Keywords: | Qinghai-Tibet Plateau Tertiary terrestrial basin petroleum resources strategic area selection Nyima basin oil-gas shows |
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