新疆准东煤田西黑山勘查区西山窑组煤相特征  

Xishanyao Formation Coal Facies Characteristics in Xiheishan Exploration Area, Eastern Junggar Coalfield, Xinjiang

作　　者：张东亮[1,2] 周继兵 庄新国[2] 雷国明 宋子辉 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710054 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]新疆地矿局第九地质大队,新疆乌鲁木齐830000

出　　处：《中国煤炭地质》2014年第7期1-7,共7页Coal Geology of China

基　　金：国家科技重大专项"煤层气与煤炭协调开发关键技术"(编号:2011ZX05040-003)

摘　　要：以新疆准东煤田西黑山勘查区西山窑组煤层为研究对象,采用成因参数法和煤相图解方法,同时结合沉积学方法进行煤岩、煤相分析,探讨泥炭沼泽类型及其演化规律。煤相参数研究显示,B1、B11、B21和B2煤层煤相总体为偏干燥的湿地森林和湿地森林沼泽,B12、B3和B4-5煤层总体为干燥森林沼泽;垂向上B1、B2、B3、B31和B6煤表现出显著的由湿地森林沼泽或偏干燥的湿地森林沼泽向干燥森林沼泽演化,反映覆水程度逐渐变浅,泥炭沼泽表面逐渐趋于干燥,表明成煤期泥炭堆积速率与基底的相对沉降速率持平或略高于基底沉降速率。Taking the Xishanyao Formation coal seams in Xiheishan exploration area, eastern Junggar coalfield, Xinjiang as subject investigated, using genetic parameter method and coal facies graphic method, combined with sedimentological method carried out coal lithology, coal facies analysis, discussed peat bog types and their evolution rules. The study of coal facies parameters has shown that coal facies of coal seams B1, B11, B21 and B2 generally originated from slightly dry wetland and wetland forest bogs, while B 12, B3 and B4- 5 from dry forest bogs. Vertically, B1, B2, B3 and B31 obviously present evolution from wetland forest bog or slightly dry wetland forest bog toward dry forest bog. That reflected water covering gradually shallower, peat bog surface gradually dryer, thus illustrated coal forming period peat accumulation rate kept balance or slightly higher than basement subsiding rate.

关 键 词：准东煤田 西黑山勘查区 西山窑组 煤相 

分 类 号：P618.11[天文地球—矿床学]