Upwelling Deposits at the Marginal Slope of a Carbonate Platform in Qixia Stage and Its Relation with Hydrocarbon Source Rocks

• 责任者：Lv Bingquan (College of Ocean and Earth Sciences ; Tongji Unversity ; Shanghai 200092 ; China) ; Cai Jingong
• 刊名：Marine Geology & Quaternary Geology
• 出版年：2010
• 卷期：30(5)
• 关键词：沉积相 ; sedimentary facies ; 烃源岩 ; source rocks
• 页码：p.109-118
• 图表：3 illus., 1 table, 32 refs.
• 分类号：1003
• issnNo：ISSN0256-1492
• isbnNo：CN37-1117/P

The Qixia Formation is one of the four suites of hydrocarbon source rocks in South China. Through field survey, and organic geochemical and paleontological studies, the authors believe that the Liangshan Member of the Formation is consisted of littoral mash and lagoonal facies; the Stink Limestone belongs to the transgressive carbonate slope facies; and all of the Upper and Lower Silicious Deposits, the Major Limestone and Top Limestone are upwelling slope facies deposited on the edge of a platform, in which storm deposits are observed. The source rocks have passed into a mature or over-mature stage. In the source rocks, the content of micritic carbonate is positively correlated with TOC. High-quality source rocks occur on the top of the Stink Limestone, middle and upper parts of the Major Limestone and some parts of the Top Limestone.