赣西南加里东造山带磨拉石相沉积的发现

详细信息

THE DISCOVERY OF MOLASSE FACIES DEPOSITS OF THE CALEDONIDES IN SOUTHWESTERN JIANGXI

摘要: 利用最新研究资料描述了赣西南地区阳岭砾岩３个实测剖面的地层层序、岩性、沉积构造、古生物化石等。根据阳岭砾岩上下地层接触关系、采获微古植物化石、砾石成分及来源判断，其成岩时代为志留纪。从区域大地构造分析，该区位于华南与扬子板块结合部位，表明阳岭砾岩是加里东造山带中的一套磨拉石相沉积。

Abstract: The Yangling psephyte is distributed in the Chongyi-Dayu area, southwestern Jiangxi province.Using the latest research data the authors describe the stratigraphic sequences,lithology,sedimentary structures and fossils of three measured sections of the Yangling psephyte.According to the contact relationships of the Yangling psephyte with its overlying and underlying strata,microfloras and composition and sources of gravels,it is considered that the age of the Yangling psephyte should be Silurian.From an analysis of the tectonic setting,the area is located in the junction between the South China and Yangtze plates,indicating that the Yangling psephyte is a sequence of molasse-facies deposits in the Caledonian orogenic belt.