摘要
应用钻井、测井、岩心资料及结合实验室包体测温、碳氧同位素等资料对塔北、塔中两地区深埋藏古岩溶进行了综合研究，划分出两类不同性质的古岩溶，即不整合面古岩溶与深部古岩溶。在不整合面古岩溶中，由于岩性及构造背景的差异导致古岩溶的剖面结构也完全不同。深部古岩溶存在有三种成因类型：①热液溶解作用；②有机酸溶解作用及③混合水溶解作用。不整合面古岩溶是研究区内的主要岩溶类型。
With the materials on well drilling,well logging,core,and the result of inclusion temperature,measurement and carbon and oxygen stable isotopes in laboratory,a comprehensive study has been made on deep buried palaeokarst of Tarbei and tarzhong regions.Two different thpes of palaeokarst are divided,unconformity palaeokarst and deep palaeokarst. For the former,the difference in lithology and tectonic setting lead to the distinct structure of palaeokarst section,while for the latter,three genetic types can be identified,i.e.,(1) hydrothermal dissolution;(2) organic acid dissolution and (3) mixed water dissolution.Five palaeokarst surfaces are developed in both unconformity and deep palaeokarst.The unconformity palaeokarst is the major karst type and also the predominant layer of palaeokarst reservoir in the studied regions.
出处
《中国岩溶》
CAS
CSCD
北大核心
1996年第3期207-216,共10页
Carsologica Sinica
