成都理工大学学报（自然科学版）2017，Vol.44Issue(1)：67-75,9.DOI:10.3969/j.issn.1671-9727.2017.01.09
桑托斯盆地白垩系湖相碳酸盐岩微生物礁滩的成因
Genetic analysis of microbial reef-bank of Cretaceous lacustrine carbonate in Santos Basin,Brazil
摘要
Abstract
Lacustrine environment is different from marine environment and the lacustrine carbonate rocks have its unique characteristics and genesis.In recent years a special reservoir of lacustrine carbonate is found in China and abroad.The study area of Santos Basin is a typical passive continental margin in the south Atlantic salt basins and lacustrine carbonate microbial reef-beach composed of stromatolites microbial limestone is the main reservoirs in the salt petroleum system.The main characteristics of microbial reef-beach is studied on the basis of comprehensive analysis of seismic reflection structure,properties of three-dimensional seismic sections,core deposit structure,drilling lithological profile,logging curve.The rock framework which is composed of stromatolites particles and the intergranular pores are main factors forming the high quality reservoir distributed mainly in the eastern uplift zone.The fragments of oolitic limestone are stromatolites with varied morphology and varied sizes.They are resulted from the nearby accumulation and wave reformation after the fragmentation of microbial reef-beach.It is considered that the formation of lacustrine carbonate microbial reefs in Santos Basin is controlled by ancient environment,changes of water depth and algae transformation.关键词
桑托斯盆地/白垩系/微生物礁滩/湖相碳酸盐岩/叠层石/鲕粒/巴西Key words
Santos Basin/Cretaceous/microbial reef-beach/lacustrine carbonate/stromatolite/oolitic/Brazil分类
天文与地球科学引用本文复制引用
王颖,王晓州,康洪全,朱石磊,蔡露露,廖计华..桑托斯盆地白垩系湖相碳酸盐岩微生物礁滩的成因[J].成都理工大学学报（自然科学版）,2017,44(1):67-75,9.基金项目
国家科技重大专项（2011ZX05030-002）；中国海洋石油有限公司勘探部项目（2014-KT-09-05）。 （）
