广西泥盆纪海盆的板块构造环境

PLATE-TECTONIC SETTINGS OF THE DEVONIAN SEA BASIN OF GUANGXI

对于广西地区晚古生代海盆的板块构造环境的性质问题,目前在认识上还存在许多不同意见。本文在综合分析前人资料的基础上,并根据沉积盆地分析的方法,通过对广西泥盆纪海盆的基底类型、沉积建造性质,所处的大地构造位置,构造活动和构造样式,岩浆活动与层控矿床特点等方面的分析研究,认为广西泥盆纪的板块构造,属于离散型大陆边缘(或被动大陆边缘)。

There have been different ideas about the nature of the plate teetonie settings of the late Paleozoic sedimentary basin in Guangxi: interare basin, marginal basin, back-are basin, passive continental-margin rift system and so on. On the basis of an integrated a-nalysis of previous data and by means of the methods for analysing sedimentary basins, the authors analyse the type of the basement, nature of sedimentary formations, tectonic positions, activity and style, magmatie activity and stratabound mineral, deposits of the Devonian sea basin of Guangxi. and consider that the plate tectonic settings of Guangxi during the Devonian were of the nature of divergent (or passive) continental margin.