城市地质2026，Vol.21Issue(3)：285-297,13.DOI:10.3969/j.issn.2097-3764.2026.03.001
露头沉积层序实例观察与石油勘探应用展望
Field observation of outcrop depositional sequence cases and its prospects for application in petroleum exploration
摘要
Abstract
Focusing on ten typical outcrop sites in five sedimentary environments,including coarse clastic deposits,coal measures,modern stromatolites,ancient marine shales and dolostones,as well as lacustrine mud shales and limestones.Field outcrop sequence observation and analysis were carried out.It is found that the key points for outcrop observation in marine basins lie in the following four aspects:1)Boundary identification,with emphasis on searching for marine flooding surfaces and sequence boundaries;2)Sedimentary structures,observing horizontal bedding,cross bedding,ripple marks,mud cracks and other features;3)Fossil characteristics,especially tracking trace fossils;4)Lithologic assemblages,distinguishing reservoirs(dolomite)from source rocks(shale),and paying attention to reservoir indicators such as dissolution vugs and siliceous bands.The key observation points for outcrops in continental basins lie in cycle classification,sedimentary facies markers,coal measures characteristics,and source-reservoir configurations,as well as sweet spot intervals of oil-and gas-bearing lacustrine basins.All the above are of great significance for the intelligent digital development of outcrop sequence stratigraphy,further research on Earth's history,biological evolution,and the exploration and development of mineral resources such as oil and natural gas.Looking ahead,outcrop sequence stratigraphy may achieve major progress in application research including marine deep-water sediments,lacustrine basin carbonate rocks and mud shales etc.关键词
露头沉积层序/准层序/古地理重建/层序地层学/石油天然气勘探Key words
depositional sequence of outcrops/parasequence/paleogeographic reconstruction/sequence stratigraphy/oil and gas exploration引用本文复制引用
吴因业,吴洛菲,陶士振,石永霞,胡琳..露头沉积层序实例观察与石油勘探应用展望[J].城市地质,2026,21(3):285-297,13.基金项目
国家油气重大专项(2016ZX05046-006)"重点盆地致密油资源潜力、甜点区预测与关键技术应用"项目资助 （2016ZX05046-006）
