闽西与闽东晚中生代火山地层及火山作用特征的对比研究

Comparative study of Late Mesozoic Volcanic Sequence and Volcanism characteristics in Western Fujian and Eastern Fujian

在区域地质构造上闽西与闽东分属2个不同的构造单元。闽东以晚中生代火山岩广泛出露而著称,闽西晚中生代火山岩虽不及闽东发育,但其出露面积亦相当可观,且在区域地质找矿方面占据着相当重要的位置。经过此次调查工作,并结合上世纪80年代以来,部分1∶5万、1∶25万区调成果资料的综合分析研究,提高了对闽西晚中生代火山岩的认识,从而为闽西与闽东地区晚中生代火山地层层序及其岩石岩相、火山活动特征等的对比研究提供了基础资料。

In the regional tectonics, Western Fujian structural units. Late Mesozoic volcanic rock and Eastern Fujian belong to two different is widely distributed in Eastern Fujian and consists in Western Fujian with a sizeable area. Although the development of Late Mesozoic volcanic rock in Western Fujian is inferior to that in Eastern Fujian, it takes hold in a key place in searching for minerals under the conditions of regional geology. Based on the comprehensive study of some results and data from the 1 ：50000 and 1： 250000-scale regional geology investigation since the 1980＇s and from this survey, it has a new acquaintance with Late Mesozoic volcanic rock in Western Fujian. Therefore, these provide with the initial values of comparative study on the Late Mesozoic volcanic sequences, lithofacies and volcanism characteristics in Western Fujian and Eastern Fujian.