• 责任者：Ge Xiangying (Chengdu Center of Geological Survey ; China Geological Survey ; Chengdu 610081 ; China) ; Mou Chuanlong
• 刊名：Geology in China
• 出版年：2013
• 卷期：40(6)
• 关键词：碳酸盐台地 ; carbonate platforms ; 沉积演化 ; sedimentary evolution ; 湖南 ; Hunan Province
• 页码：p.1829-1841
• 图表：10 illus., 1 table, 31 refs.
• 分类号：0803
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

     Based on field survey, laboratory analysis of sedimentary strata and summarization of previous research results in Hunan Province, the authors divided the Ordovician tectonic and sedimentary evolution into four stages, i.e., rimmed carbonate platform-shelf-deep water basin in the Early Ordovician, carbonate ramp-shelf- deep basin in the Middle Ordovician, carbonate ramp-shelf-deep water basin-shelf margin at the early age of Late Ordovician, and confined shallow marine-deep water basin-shelf margin in the late period of the Late Ordovician. The northwestern Hunan in Yangtze craton experienced the evolution from the rimmed carbonate platform to carbonate ramp, and finally became a confined shallow sea, with the black shale gradually replacing carbonates in lithology. The central and southern Hunan located at the edge of the craton and the Cathaysia Block was always in a clastic shallow marine environment, and the center of the basin migrated constantly from southeast to northwest.