云南彝良地区宣威组聚煤规律  

Xuanwei Formation Coal Accumulation Pattern in Yiliang Area, Yunnan

作　　者：张光超[1] 

机构地区：[1]中国煤炭地质总局航测遥感局,陕西西安710054

出　　处：《中国煤炭地质》2015年第10期10-14,共5页Coal Geology of China

基　　金：中国地质调查局南方缺煤省份煤炭资源调查项目(1212011220764);国土资源部中央地质勘查基金项目(2007531006)联合资助

摘　　要：基于煤田地质勘查成果,研究了云南彝良地区宣威组沉积特征及聚煤规律。研究认为宣威组为一套以陆相碎屑岩为主的沉积建造,煤层厚度与宣威组厚度呈正相关,总体上由北西向南东方向煤层层数逐渐增多,煤层厚度逐渐增大,以C5煤层发育最为稳定;研究区西北高、东南低的古地理条件是控制聚煤作用的主要因素,且宣威组沉积中心与推测的古河道的位置基本一致。Based on coalfield geological exploration results have studied the Xuanwei Formation sedimentary features and coal accumulation pattern. The research has considered that Xuanwei Formation is a set of sedimentary formation mainly consists of limnic clastic rocks. Coal thickness is positively correlated with thickness of Xuanwei Formation, coal seam numbers gradually increasing from northwest to southeast and coal thickness gradually increasing simultaneously, the most consistent is the development of coal C5. The study area＇s high in northwest and low in southeast paleogeographic condition was the main factor to control coal accumulation, and the sedimentary center of Xuanwei Formation is basically consistent with supposed paleochannels.

关 键 词：彝良地区 宣威组 古地理 聚煤规律 

分 类 号：P618.11[天文地球—矿床学]