华南乌拉尔统(下二叠统)梁山组(段)的沉积特征和沉积环境SEDIMENTARY FEATURES AND SEDIMENTARY ENVIRONMENTS OF THE CISURALIAN (LOWER PERMIAN) LIANGSHAN FORMATION (MEMBER) IN SOUTH CHINA
马衍淳,郑全锋,杨雪,王玥,黄兴
摘要(Abstract):
梁山组(段)是华南乌拉尔统大套碳酸盐岩层序中所夹的一套碎屑岩沉积,形成于二叠纪早期古地理、古气候的重大转折期,同时赋存有煤、铝土矿等丰富的矿产资源,具有重要的地史意义和经济意义。本文主要在前人资料的基础上,结合新的研究材料,总结了梁山组(段)的沉积特征,将其划分为铁铝质岩型、砂泥岩型、泥页岩型和灰岩-泥岩型四种类型;在每种沉积类型中选取了代表性剖面,分析了华南梁山组(段)的沉积环境演变和相对海平面变化,认为梁山组(段)是早二叠世最大海退之后的一套海侵层序。在此基础上,本文讨论了梁山组(段)及其底部不整合面的古构造和古气候意义。
关键词(KeyWords): 梁山组(段);沉积类型;沉积环境;海平面变化;晚古生代大冰期
基金项目(Foundation): 国家自然科学基金(42372045);; 中国地质科学院项目(DD20221829);; 中国石油西南油气田公司科研项目(20230304-08)共同资助
作者(Author): 马衍淳,郑全锋,杨雪,王玥,黄兴
DOI: 10.19839/j.cnki.dcxzz.2025.0014
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