华南泥盆纪的沉积盆地特征沉积作用和成矿作用  

GEOLOGICAL FEATURES OF DEVONIAN SEDIMENTARY BASINS IN SOUTH CHINA AND THEIR DEPOSITION AND MINERALIZATION

作　　者：刘文均[1] 张锦泉[1] 陈洪德[1] 

机构地区：[1]成都地质学院

出　　处：《地质学报》1993年第3期244-254,共11页Acta Geologica Sinica

摘　　要：华南地区泥盆系以其发育齐全、沉积类型多样、岩相变异显著和矿产资源丰富而著称,它是由扬子板块和华夏板块碰撞拼合而成,碰撞时间大约始于晋宁期,而到广西运动之后最终拼合。泥盆纪沉积就发生在这个基底性质有所不同的华南板块之上。The Devonian sedimentary basins are developed in the unified South China plate. According to their tectonic settings, sedimentationa' features and formation mechanisms, they can divided into intercontinental and epicontinental types, and subdivided into depression, graben, rift and strike-slip basins.The prevailing sediments of the South China Devonian basins are carbonates. But, because of the development of contemporaneous faults, the sediments of these basins have different characters, which were formed in various facies, especially those of carbonate platform and siliceous rocks, marls and argillaceous rocks of deep basins. There were three periods of transgression of global significance, i.e Late Praguian, Middle Givetian and Ealy Frasian stages, with corresponding palaeogeographic changes, sedimentary differentiations, volcanic activities and other sedimentationary events.Abundant metallic mineral resources have been found in the Devonian formations of South China. Most of the mineral deposits are either stratiform or stratabound. They may be of syngenetic submarine exhalation to hydrothermal, or epithermal fissure-filling and replacement, or superimposed hydrothermal origin. While the formation of the ore-hosting beds were related to the relevant Devonian transgressions, most of the deposits are of zonal distribution and oceanic in the basins and along the margins of platforms. The close relationship of the basin evolution, Devonian transgressions and metallic mineralization may be duely explained by the control of plate spreading which gave rise to the transgression, basin differentiation and also formation of deposits.

关 键 词：泥盆纪 沉积盆地 成矿作用 

分 类 号：P612[天文地球—矿床学]