中国石油大学学报（自然科学版）2018，Vol.42Issue(2)：1-9,9.DOI:10.3969/j.issn.1673-5005.2018.02.001
准噶尔盆地车排子地区不整合结构对火山岩裂缝发育的影响
Effects of structural unconformity on development of volcanic rock fracture in Chepaizi area, Junggar Basin
摘要
Abstract
The fractures of volcanic rock are studied in the Carboniferous Chepaizi area of Junggar Basin. Using drilling cores,thin section,conventional logging and image logging,the characteristics of the structural unconformity and the charac-terization of fracture in each structure are statistically analyzed. The results show that the structure of the Carboniferous top unconformity has a six-layer structure, which includes overlying rock, soil layer, hydrolysis zone, leached zone, broken-down zone Ⅰ,and broken-down zoneⅡfrom top to bottom. Under the unconformity,the characterization of the fractures in individual structures differs. The degree of fracture filling increases gradually from the leached zone,the hydrolysis zone,the broken-down zoneⅠ,to the broken-down zoneⅡ. The fracture development is the best in the leached zone,but downgrades gradually from the broken-down zoneⅠ,the broken-down zoneⅡ,to the hydrolysis zone,respectively. The characterization of the fractures in the structure is clearly related to volcanic rock,weathered leaching and argillazation. Basalt and andesitic basalt have well developed fractures,and account for a large proportion in the leached zone and the broken-down zone Ⅰ. Argillazation is less developed than weathered leaching in leached zone,where fractures are well developed.关键词
不整合结构/裂缝/火山岩/车排子地区/石炭系Key words
unconformity structure/fracture/volcanic rock/Chepaizi area/Carboniferous分类
能源科技引用本文复制引用
杨少春,何妮茜,宋明水,牛海瑞,欧阳黎明..准噶尔盆地车排子地区不整合结构对火山岩裂缝发育的影响[J].中国石油大学学报（自然科学版）,2018,42(2):1-9,9.基金项目
国家科技重大专项(2017ZX05009001) （2017ZX05009001）
