摘要
黔南拗陷泥盆系—二叠系生物礁广泛分布,按其发育的古地理位置可分为台缘礁和台内礁2种类型。台缘礁受北西向垭都—紫云—罗甸大断裂和与之交叉的北东向师宗—贵阳大断裂控制,规模一般比较大;台内礁主要受水下局部隆起(或断块)控制和海平面升降影响,规模一般比较小。台缘礁成礁环境以中—高能为主,台内礁成礁环境以低能为主;造礁生物主要为层孔虫、珊瑚、叶状藻、海绵等,而且在礁体发育的不同时期、不同阶段有一定差异。礁灰岩类型有骨架岩、障积岩-骨架岩、骨架岩-障积岩和黏结岩4种类型。研究表明:黔南拗陷泥盆系—二叠系生物礁具有较好的含油气性,有油气运移聚集的过程,油气勘探前景良好,是寻找生物礁油气藏的重点地区之一。
The Devonian-Permian organic reefs in the south of Guizhou are distributed widely.They can be divided into two types of platform margin reef and intra platform reef according to their ancient geographical positions of development.The scale of the platform margin reef is relatively large because the platform margin reef is controlled by the major rupture of the Yadu-Ziyun-Luodian of NW striking and the major rupture of the Shizong-Guiyang of NE striking crossing with it.The scale of the intra platform reef is generally small because the intra platform reef is controlled by partial uplifts（or fault blocks） underwater and influenced by the eustacy of sea level.The formation environment of the platform margin reef is mainly a middle-high energy while that of the intra platform reef is dominated by a low energy.The reef-building organisms are mainly Stromatopora,coral,lobate algae,sponge,etc.and they have differences in different developing periods and phases.The types of reef limestone have four types of framestone,bafflestone-framestone,framestone-bafflestone and bondstone.Recent researches indicate that the organic reef of Devonian-Permian in the depression in the south of Guizhou has preferable petroliferous property and presents the process of oil-gas migration and accumulation,having a favorable oil-gas exploration perspective.The study area is one of the key areas for seeking oil-gas reservoirs of organic reefs.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第5期515-522,共8页
Journal of Chengdu University of Technology: Science & Technology Edition
关键词
油气勘探前景
含油气性
生物礁
泥盆系-二叠系
黔南拗
oil-gas exploration perspective
petroliferous property
organic reef
Devonian-Permian
depression
south of Guizhou
