|
|||||
|
|
| 鄂尔多斯盆地延长期坳陷湖盆事件沉积记录 | |
| 引用本文： | 庞军刚,国吉安,宋立军,李文厚.鄂尔多斯盆地延长期坳陷湖盆事件沉积记录[J].沉积与特提斯地质,2012,32(1):32-37. |
| 作者姓名： | 庞军刚 国吉安 宋立军 李文厚 |
| 作者单位： | 1. 西安石油大学 油气资源学院,陕西 西安,710065 2. 陕西省地质矿产勘查开发局第二综合物探大队,陕西西安,710016 3. 西北大学地质学系,陕西 西安,710069 |
| 基金项目： | 西安石油大学博士科研启动基金项目资助(YS29031212) |
| 摘 要： | 鄂尔多斯盆地延长期浊积岩、震积岩、凝灰岩等事件沉积垂向上均发育典型的沉积序列，可根据其沉积序列进行识别。其主要形成于长6期至长8期，平面上分布在盆地西南部的深湖区。从形成机制上看，构造运动触发了火山活动和强烈的地震。地震活动又触发（辫状河）三角洲前缘沉积物向深湖区移动，由牵引流转化为浊流。这几种事件沉积与油气聚集关系密切。浊积岩、震积岩具有一定的储集能力，构成深水区油气的主要储集体；而凝灰岩促进了优质烃源岩的形成，并加速其演化过程。 |
| 关 键 词： | 鄂尔多斯盆地 延长组 事件沉积 浊流 火山事件 地震事件 |
| 收稿时间： | 2010/12/5 0:00:00 |
| 修稿时间： | 2011/10/20 0:00:00 |
The event deposits from the Yanchangian lacustrine basin in the Ordos Basin |
|
| PANG Jun-gang,GUO Ji-an,SONG Li-jun,LI Wen-hou.The event deposits from the Yanchangian lacustrine basin in the Ordos Basin[J].Sedimentary Geology and Tethyan Geology,2012,32(1):32-37. | |
| Authors: | PANG Jun-gang GUO Ji-an SONG Li-jun LI Wen-hou |
| Institution: | 1.School of Petroleum Resources,Xi’an University of Petroleum,Xi’an 710065,Shaanxi,China;2.No.2 Exploration Geophysics Research Party,Shaanxi Bureau of Geology and Mineral Resources,Xi’an 710016,Shaanxi,China;3.Department of Geology,Northwest University,Xi’an 710069,Shaanxi,China) |
| Abstract: | The turbidites,seismites and tuffs may be discriminated in terms of their vertical sedimentary sequences.The event deposits from the Yanchangian lacustrine basin in the Ordos Basin were initiated during the Chang-6 to Chang-8 stages.In a planar view,they are arranged in the deep-lake area in the southwestern part of the basin.The mechanisms for the formation of the event deposits have disclosed that the tectonic movements tend to give rise to the volcanic activities,followed by severe earthquakes.The earthquakes,in turn,may cause the braided delta front deposits to migrate toward the deep-lake area.All the event deposits outlined above are closely associated with hydrocarbon accumulation.The turbidites and seismites have certain reservoir potential,and thus may act as the main reservoir rocks in the deep-water areas.The tuffs may stimulate the formation and evolution of the excellent source rocks. |
| Keywords: | Ordos Basin Yanchang Formation event deposit turbidity current volcanic event seismic event |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《沉积与特提斯地质》浏览原始摘要信息 | |
| 点击此处可从《沉积与特提斯地质》下载免费的PDF全文 | |