| 柴达木盆地西部古近系湖相风暴岩 |
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| 引用本文： | 郭峰,郭岭.柴达木盆地西部古近系湖相风暴岩[J].新疆地质,2011,29(2):125-129. |
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| 作者姓名： | 郭峰 郭岭 |
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| 作者单位： | 1. 西安石油大学油气资源学院,陕西西安,710065
2. 中国地质大学(北京)地质过程与矿产资源国家重点实验室,北京,100083 |
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| 摘 要： | 在野外剖面和岩心观察基础上,介绍了柴达木盆地西部古近系湖相风暴岩沉积特征,建立了湖泊风暴沉积模式,探讨风暴岩发育条件及意义.研究区风暴沉积是由风暴浪作用于浅湖泥坪上,使沉积物搅起、形成泥岩砾屑,并通过风暴流搬运到三角洲或滨浅湖滩坝中,与未固结砂质沉积物一起沉积形成.其典型沉积构造特征丰富,单层风暴沉积发育不完整,常见多次风暴作用形成若干不完整风暴岩叠置层.风暴岩的发现有利于加深对该区沉积相的认识,风暴岩频繁发育,表明研究区在古近系沉积时,易受到古气候影响,湖盆水动力较强,部分原始沉积砂体会受到湖泊水体的改造,形成新的滨浅湖滩坝砂体,形成良好的岩性油气藏.
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| 关 键 词： | 柴达木盆地 古近系 风暴岩 沉积模式 |
LACUSTRINE TEMPESTITE SEDIMENT FEATURES OF PALEOGENE,WEST TSAIDAM BASIN |
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| GUO Feng,GUO Ling.LACUSTRINE TEMPESTITE SEDIMENT FEATURES OF PALEOGENE,WEST TSAIDAM BASIN[J].Xinjiang Geology,2011,29(2):125-129. |
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| Authors: | GUO Feng GUO Ling |
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| Institution: | GUO Feng1,GUO Ling2(1.School of Petroleum Resourses,Xi'an Shiyou University,Xi'an,Shanxi,710065,China,2.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing,100083,China) |
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| Abstract: | Based on the field section and cores observation,this paper presents the characteristics of lacustrine elastic tempestites in Paleogene of Tsaidam Basin,sets up the storm deposition model in this area,including the conditions and significance of the tempestite formation.The tempestites are composed of unconsolidated arenaceous sediment and boulder clay,which were from the sediments of mere mudflat churned up by storm wave,and transported to delta and beach bar of shore shallow lake.A plenty of the sedimenta... |
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| Keywords: | Tempestite Sedimentary model Tsaidam basin Paleogene |
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