摘要
阿根廷内乌肯盆地沉积构造演化可分为同裂谷期(晚三叠世-早侏罗世)、后裂谷期(早侏罗世-早白垩世)和前陆期(晚白垩世-新生代)等3个阶段。同裂谷期主要发育河流相、湖泊相和火山碎屑沉积物;后裂谷期发育2个较大的海进-海退旋回,下部旋回以湖相、海相沉积为主,上部旋回主要发育河流三角洲相沉积;前陆期以压性机制为主,发育了海相、陆相沉积。盆地油气资源丰富,其中,最主要烃源岩位于Vaca Muerta组;主要产层是晚侏罗世和早白垩世砂岩和灰岩;侏罗系及其以下盖层多为区域性的,其上盖层多为半区域性的。盆地内石油主要分布于盆地周边,天然气集中于盆地中心,以构造-地层复合型油气藏为主。盆地西部逆掩带以及盆地东部周缘重油分布带是有利勘探区域。
Sedimentary and tectonic evolution of the Neuquen basin is divided into three stages： the syn-rift stage（Late Triassic-Early Jurassic）,depositional systems of fluvial,lacustrine and pyroclastics are developed;the post-rift stage（Early Jurassic-Early Cretaceous）,two large transgression and regression cycles are developed,marine and lacustrine sediments occur in bottom cycle,while fluvial delta sediment in upper cycle;and foreland one（Late Cretaceous-Cenozoic）,dominated by compressional mechanism,marine and continental sediments are developed.There are abundant petroleum resources in the Neuquen basin,in which the major source rocks are found in Vaca Muerta formation,the main productive reservoirs are sandstone and limestone of the Upper Jurassic-Lower Cretaceous.The cap rocks in the Jurassic or below it are distributed regionally,those above it are semi-regional.Petroleum in this basin is mainly found in surrounding parts,but gas is in the center.They are dominated by structural-stratigraphic traps.Thrust belt in western basin and surrounding heavy oil belt in eastern basin could be favorable areas for petroleum exploration.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2011年第6期696-698,共3页
Xinjiang Petroleum Geology
关键词
内乌肯盆地
前陆盆地
沉积构造演化
石油地质
Neuquen basin
foreland basin
sedimentary and tectonic evolution
petroleum geology
作者简介
秦雁群（1982-），男，安徽巢湖人，在读博十研究生，石油地质．（Tel）13651283612（E—mail）yqqin2003@163.com
