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海南岛昌江县石碌是我国著名的富铁(钴、铜)矿区。我们对矿区以大比例尺的专门构造地质填图为基础,从石碌群中筛选出普遍发育的四种构造要素,两类褶皱样式群;结合大量剖面、化探及钻孔资料等的综合分析研究。认为石碌群的基本构造格架,主要是由两期褶皱变形叠加组成的“W”型叠加褶皱。本文重点论述石碌群的基本格架及大型组构解析。一、石碌群的“W”型叠加褶皱“W”型叠加褶皱是指:当先存褶皱为轴面陡倾的紧闭线性褶皱,受到后期与其轴向
Changshu County, Hainan Island Shilu is China’s famous iron-rich (cobalt, copper) mining area. Based on large-scale geologic mapping of large scale, we selected four widely-developed structural elements and two types of fold styles from Shilu Group. Based on the comprehensive analysis of a large number of profiles, geochemical exploration and drilling data, It is considered that the basic tectonic framework of Shilu Group is mainly composed of “W” superimposed folds composed of two superimposed fold deformations. This article focuses on the basic framework of Shilu Group and large-scale structural analysis. First, the Shilu group of “W” type superimposed folds “W” type superimposed folds: refers to the pre-existing folds as a steep axial plane tight linear wrinkles, by the late and its axial