华南二叠纪赋煤带划分及褶皱形态特征  

South China Permian Coal Hosting Zoning and Fold Morphological Features

作　　者：张德民 Zhang Demin(Hunan Chemical Geological Engineering Exploration Institute,Co.Ltd.,Changsha,Hunan 410004)

机构地区：[1]湖南化工地质工程勘察院有限责任公司,长沙410004

出　　处：《中国煤炭地质》2021年第7期12-18,66,共8页Coal Geology of China

摘　　要：华南二叠纪赋煤区的构造位置包括扬子地台北缘东段、扬子地台东南边缘、华南褶皱带﹑华夏地块。依据煤系现存位置及构造边界条件可划分为7个赋煤带:鄂南湘西北赋煤带、苏皖南浙赣北赋煤带、湘中赋煤带、赣中湘东南粤北赋煤带、浙西赣东南赋煤带、闽西南粤东粤中赋煤带、广西赋煤带。褶皱是基本的、建设性的控煤构造样式,煤田或矿区一般保存在褶皱的不同部位。恢复和发现"丢失"的褶皱构造要素,是预测和发现煤系矿产资源的有效方法。华南二叠纪赋煤区褶皱轴向一般平行于基底隆起的边缘(即平行于构造边界),轴向有北东向、北西向、南北向及东西向;以短轴侏罗山式褶皱为主,轴面常斜歪,倒转,轴面多倾向基底隆起;常见叠加褶皱;褶皱与逆冲推覆或基底拆离相伴生。Structural position of the South China Permian coal hosting areas have stretched over the Yangtze platform north margin eastern segment, southeast margin, South China folded belt and Cathaysian massif. Based on the coal measures preserved positions at present and structural boundaries, the coal hosting area can be partitioned into 7 coal hosting zones namely southern Hubei, northwestern Hunan hosting zone;southern Jiangsu, southern Anhui, northern Zhejiang, northern Jiangxi hosting zone;central Hunan hosting zone;central Jiangxi, southeastern Hunan, northern Guangdong hosting one;western Zhejiang, southeastern Jiangxi hosting zone;southwestern Fujian, eastern and central Guangdong hosting zone and Guangxi hosting zone. Folds are essential, constructive coal controlling structural pattern, coalfields or mine areas are generally preserved in different positions of fold. Thus to regain and find out "missed" fold structural elements are effective approaches to predict and find coal measures mineral resources. South China Permian coal hosting fold axial is generally parallel to basement uplift edge(i.e. parallel to structural boundary), axial has NE, NW, NS and EW. Folds are mainly brachy-axis Jura-type, axial surfaces are usually deflected, overturn, mostly dipping to basement uplift. Superimposed folds are common. Folds are usually associated with thrust nappe or basement decoupling.

关 键 词：二叠纪煤系 赋煤带 褶皱样式 华南 

分 类 号：P618.11[天文地球—矿床学]