| 蜀南地区二叠系茅口组古岩溶地区水系分布及岩溶地貌单元特征* |
| |
| 引用本文： | 桑琴,未勇,程超,黄静,何术坤,郭贵安,吴昌龙,彭祚远.蜀南地区二叠系茅口组古岩溶地区水系分布及岩溶地貌单元特征*[J].古地理学报,2012,14(3):393-402. |
| |
| 作者姓名： | 桑琴 未勇 程超 黄静 何术坤 郭贵安 吴昌龙 彭祚远 |
| |
| 作者单位： | 1.西南石油大学资源与环境学院，四川成都 610500;2.中国石油西南油气田分公司蜀南气矿，四川泸州 646001 |
| |
| 基金项目： | 四川省重点学科建设项目 |
| |
| 摘 要： | 蜀南地区茅口组为一套沉积稳定的巨厚层生物碎屑灰岩，基质致密性脆。中二叠世末的东吴运动使蜀南地区茅口组顶部发育古风化壳岩溶，古岩溶地区水系控制着古岩溶的发育和演化。在研究古地貌恢复方法的基础上，分析研究区地层特征和区域构造背景，采用印模法进行古地貌恢复，进而研究了古岩溶地区的水系发育特征。在此基础上，结合风化壳表面侵蚀溶蚀特征、沉积物性质、地貌组合形态、钻井和地震资料，把研究区划分为岩溶台地、岩溶陡坡、岩溶缓坡及岩溶盆地4种二级地貌单元和溶丘洼地、岩溶槽谷、峰林平原等10种三级地貌单元，进一步分析了各种地貌单元的岩溶特征，为下一步的储集层预测提供了有利的目标。
|
| 关 键 词： | 蜀南 二叠系 茅口组 古地貌恢复 流域水系 地貌单元 |
| 收稿时间： | 2011-09-13 |
Distribution of palaeokarst water system and palaeogeomorphic unit characteristics of the Permian Maokou Formation in southern Sichuan Province |
| |
| Sang Qin
,
Wei Yong
,
Cheng Chao
,
Huang Jing
,
He Shukun
,
Guo Gui'an
,
Wu Changlong
,
Peng Zuoyuan.Distribution of palaeokarst water system and palaeogeomorphic unit characteristics of the Permian Maokou Formation in southern Sichuan Province[J].Journal of Palaeogeography,2012,14(3):393-402. |
| |
| Authors: | Sang Qin Wei Yong Cheng Chao Huang Jing He Shukun Guo Gui'an Wu Changlong Peng Zuoyuan |
| |
| Institution: | 1.Institute of Resources and Environment，Southwest Petroleum University，Chengdu 610500， Sichuan;2.Shunan Gas Mine of Southwest Oil and Gas Branch，PetroChina，Luzhou 646001， Sichuan |
| |
| Abstract: | The Permian Maokou Formation in southern Sichuan Province is a set of thickly stable bioclastic limestone with dense and brittle matrix.The Dongwu Movement of the late Middle Permian leads to the development of the palaeoweathering crust-type karst on the apex face of Maokou Formation in this area.Palaeokarst water system controls the development and evolution of the palaeokarst.After studying the methods of recovering palaeogeomorphology,this paper analyzes all kinds of data to recover the palaeogeomorphology with impression method and researches the characteristics of the palaeokarst water system.On this basis,four second order landform units,such as karst platform,karst abrupt slope,karst gentle slope and karst basin and ten third order units,such as hill depression,karst trough valley and peak forest basin are subdivided,combined with eroding features of the upper surface,properties of sediments,configuration of geomorphology and data of drilling well and seismic.At last,the karst features of each unit are analyzed.So the research findings will provide reliable target for the reservoir predication in the next step. |
| |
| Keywords: | southern Sichuan Province Permian Maokou Formation palaeogeomorphology recover water system landform unit |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《古地理学报》浏览原始摘要信息 |
| 点击此处可从《古地理学报》下载免费的PDF全文 |
