高校地质学报2017，Vol.23Issue(4)：737-749,13.DOI:10.16108/j.issn1006-7493.2016225
基于氧化系数的火山喷发环境判别:以准噶尔盆地西北缘下二叠统为例
Discrimination of Volcanic Eruption Environment Using Oxidation Index:A Case Study of Lower Permian Volcanic Rocks in Northwestern Margin of Junggar Basin
摘要
Abstract
Accurate discrimination of the volcanic eruption environment is the foundation of volcanic reservoir evaluation. Many types of Lower Permian volcanic rocks are developed in the northwestern margin of Junggar Basin,which are mainly distributed along the fault zone of the basin margin,and is an important type of petroleum reservoirs. In this paper,the eruptive environment of volcanic rocks in study area is studied by means of cores analysis,thin-sections observation and geochemical element analysis. The oxidation index has been studied from the 75 volcanic rock samples around the world,and thus improved the traditional method of volcanic eruption environment discrimination with full consideration of its influencing factors such as the eruption environment,magmatic properties,weathering and burial diagenesis. Finally,the coincidence rate of actual application results with the results of other discriminators ups to 92.86％,with only two cases discrepant.The discrimination chart established in this paper is available for other regions with similar geological background and the results of this paper could provide a new idea for the evaluation of volcanic rock reservoirs in the study area.关键词
火山岩/喷发环境/氧化系数/准噶尔盆地西北缘/下二叠统Key words
volcanic rock/eruption environment/oxidation index/Northwestern Margin of Junggar Basin/Lower Permian分类
农业科技引用本文复制引用
何衍鑫,鲜本忠,牛花朋,张鑫璐,沈佳男..基于氧化系数的火山喷发环境判别:以准噶尔盆地西北缘下二叠统为例[J].高校地质学报,2017,23(4):737-749,13.基金项目
国家自然科学基金(41172104 （）
41372117 （）
41272133) （）
国家油气重大专项(2011ZX05009-002 （）
2011ZX05014-001) （）
中国石油大学(北京)科研基金资助(KYJJ2012-01-06)联合资助 （北京）
