摘要
南美大陆构造多样、演化复杂。众多的沉积盆地在东西向具显著分带性,而在南北向具有分段性。各类盆地的形成和演化在时间上也有一定规律:古生代发育克拉通内盆地;中生代早期开始发育弧前、弧后(前陆)盆地;中生代晚期和新生代发育大西洋被动边缘盆地和扭压盆地。通过剖析和对比各类盆地构造、沉积、油气地质特征后认为,南美板块油气主要聚集在弧后(前陆)盆地和大西洋被动边缘盆地,占到南美油气资源量95%以上。白垩系烃源岩是南美油气聚集的一级控制因素。另外,南美克拉通内盆地油气资源潜力不容忽视。
The South America continent is of multiple structures and complex evolution. The numerous sedimentary basins in it appear ob- vious zonation nature in direction of east to west and segmentation in south to north. The formation and evolution of these basins follow cer- tain regular patterns on the time： the intracratonic basins are found in Paleozoic; the forearc and retroarc （foreland） basins in the early Meso- zoic; the Atlantic passive margin basins and the compresso-shear basins in the late Mesozoic and Cenozoic. The analyses and comparisons of them in terms of structural, sedimentary and hydrocarbon geological features indicate that the hydrocarbon accumulation in South Ameri- ca plate was mainly in the retroarc （foreland） basins and the Atlantic passive margin basins, which accounts for over 95% of the total hydro- carbon resource amount of South America. The Cretaceous source rocks act as A-level control factor for the hydrocarbon accumulations of South America. In addition, the intracratonic basins of it are of not ignorable hydrocarbon resource potentials.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期369-373,共5页
Xinjiang Petroleum Geology
关键词
南美板块
安第斯
盆地
构造
油气聚集
South America plate
Andean
basin
tectonic structure
hydrocarbon accumulation
