鄂西神农运动和花山运动的再研究  

AN OPINION ABOUT THE SHENNONG MOVEMENT AND HUASHAN MOVEMENT

作　　者：甘金木[1] 

机构地区：[1]宜昌地质矿产研究所,宜昌443003

出　　处：《华南地质与矿产》1999年第2期47-52,共6页Geology and Mineral Resources of South China

基　　金：地质矿产部"八五"定向基金

摘　　要：根据对沉积建造、地层不整合面和岩浆、变形、变质事件的再研究,提出中元古代伸展裂陷作用至中元古代末期—新元古代早期碰撞造山作用构成一个完整的威尔逊旋回;中元古界形成于扬子陆块结晶基底的裂陷槽环境,马槽园群和莲沱组分别为挤压型和拉张型磨拉石建造;前人命名的神农运动和花山运动,实际上是描述同一造山作用过程的不同阶段,建议合称为“神农运动”,用于代表中元古代末期至新元古代早期（1000～800Ma）的碰撞造山作用。Based on analyses of sedimentary formation, uniformity, deformation, magmatism and meta-morphism in Shennongjia region and its adjacent areas of western Hubei, the author suggests in this paper that extension in the early Mesoproterozoic and collision from late Mesoproterozoic to early Neoproterozoic constitute a complete Wilson's cycle. The Mesoproterozoic Shennongjia Group was formed in an aulacogen environment on the Yangtze crystalline basement; the early Neoproterozoic Macaoyuan Group and the early Sinian Liantuo Formation consist of compression-and extension-type molasse formation, respectively. So, the Shennong Movement and the Huashan Movement named by predecessors should represent different stages of the orogenic process happened from Mesoproterozoic to early Neoproterozoic Period (1000-800 Ma) and may be named as the Shennong Movement.

关 键 词：神农运动 花山运动 磨拉石建造 碰撞造山作用 湖北 沉积建造 

分 类 号：P542.2[天文地球—构造地质学]