海洋地质与第四纪地质2011，Vol.31Issue(2)：95-104,10.DOI:10.3724/SP.J.1140.2011.02095
南海北部边缘盆地非烃气分布及形成的地质条件与控制因素
NON-HYDROCARBON GAS DISTRIBUTION AND ITS GEOLOGICAL CONDITIONS AND CONTROLLING FACTORS IN THE MARGINAL BASIN OF NORTHERN SOUTH CHINA SEA
摘要
Abstract
Non-hydrocarbon gases, such as CO2 (carbon dioxide) and N2 (nitrogen), have been discovered in the marginal basin of northern South China Sea. The formation and accumulation of these gases require some specific geological conditions and controlling factors. The CO2 of Crustal type and crust-mantle mixed type and the N2 of crustal organic type and crustal organic-inorganic hybrid type are mainly enriched in the shallow part of the central diapir area of the Yinggehai basin along the northwest strike-slip extensional edge of the northern South China Sea, under the joint control of marine calcareous shale and the physical and chemical activities caused by the heat flow derived from mud diapiric intrusion; and the mantle-type volcanic CO2 is mainly distributed around the deep faults on the borders of the depressions in the eastern Qiongdongnan basin and along the salients in the Zhujiangkou basin. The degasification of the volcanic mantle provided the gas sources and the deep faults were the path for gas migration to traps.关键词
盆地结构类型/非烃气分布/形成地质条件/主要控制因素/南海北部Key words
northern South China Sea/ basin structure types/ non-hydrocarbon gas distribution/ formation of geological conditions/ main controlling factors.分类
海洋科学引用本文复制引用
何家雄,马文宏,陈胜红,龚晓峰..南海北部边缘盆地非烃气分布及形成的地质条件与控制因素[J].海洋地质与第四纪地质,2011,31(2):95-104,10.基金项目
国家重点基础研究发展规划项目(2007CB41170501,2009CB219501) （2007CB41170501,2009CB219501）
