中国岩溶Issue(2)：179-186,8.DOI:10.11932/karst20150212
塔北哈拉哈塘地区奥陶系层间改造区岩溶古水文条件分析
Ancient hydrological conditions of the Ordovician transformation zones in the Halahatang area,northern Tarim
摘要
Abstract
From north to south,the Halahatang area of northern Tarim can be divided buried hill in karst, interbed karst bedding reform,interbed karst platform-margin overlap,and karst slope zones.Among these,the inter-bed karst-bedding reform zone is the transition area between the buried hill karst and bedding karst zones.This paper presents a detailed analysis on the ancient karst hydrological conditions for sediment discontinuity in the Pre-Silurian and Lianglitage formation karst period.The results suggest that the surface drainages are characterized overall by runoff from north to south and deeply incised valleys that decided the depth of the local discharge datum.There are various kinds of underground rivers,which are of flow in and flow out types as pipeline systems,mostly in single inflows and outflows.On seismic reflection profiles, these rivers can be recognized by continuous or intermittent beaded strong reflections,of which the karst subsurface river of the Lianglitage formation is particularly obvious.Most of beheaded rivers of the Pre-Silu-rian have hidden outlets.In the vicinity of these underground rivers,there exist big fissure-cavity bodies which are the important targets in current exploration.Thus accurate reconstruction and description of the hydrology of these ancient karst drainages would be help to search for favorable reservoirs of hydrocarbon.关键词
古岩溶/古水文条件/层间岩溶/奥陶系/哈拉哈塘地区Key words
paleokarst/ancient hydrological conditions/interbed karst/Ordovician/Halahatang area分类
天文与地球科学引用本文复制引用
郑多明,张庆玉,赵宽志,梁彬,淡永,李景瑞..塔北哈拉哈塘地区奥陶系层间改造区岩溶古水文条件分析[J].中国岩溶,2015,(2):179-186,8.基金项目
国家青年基金(41302122) （41302122）
973计划项目(2011CB201001) （2011CB201001）
国土资源部公益性行业科研专项(201211082) （201211082）
