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| 新疆卡姆斯特煤田早-中侏罗世含煤岩系层序-古地理与聚煤规律研究 | |
| 引用本文： | 刘志逊,田继军,张国庆,杨曙光,代鸿章.新疆卡姆斯特煤田早-中侏罗世含煤岩系层序-古地理与聚煤规律研究[J].中国煤炭地质,2014(10):1-6. |
| 作者姓名： | 刘志逊 田继军 张国庆 杨曙光 代鸿章 |
| 作者单位： | 1. 中国地质调查局发展研究中心,北京,100037 2. 新疆大学地质与矿业工程学院,新疆乌鲁木齐,830046 3. 新疆煤田地质局,新疆乌鲁木齐,830039 4. 中国地质大学 北京，地球科学与资源学院，北京 10083 |
| 基金项目： | 国家自然科学基金项目(41262006)。 |
| 摘 要： | 基于新疆卡姆斯特煤田侏罗系中下统层序地层的分析,研究了聚煤期古地理及其与聚煤作用的关系。结果表明:层序Ⅰ-Ⅱ(八道湾组)受乌伦古深断裂及次一级断层等同沉积断裂的控制,自东向西,地层、煤层逐渐增厚,煤层主要形成于辫状河三角洲平原,在卡姆斯特1-10区、普北矿区及卡姆斯特中区形成5~10m的富煤带;层序Ⅲ(三工河组)形成于乌伦古凹陷湖泊大规模扩张期,是从冲积-三角洲平原环境为主向湖泊环境为主的重要转折期形成的沉积层序,一般不含煤;层序Ⅳ-Ⅴ(西山窑组)受沉积环境与湖平面变化的控制,煤层形成于湖泊三角洲平原,受燕山构造运动强烈的改造,在中东部地区西山窑地层遭受剥蚀。 |
| 关 键 词： | 卡姆斯特煤田 侏罗系 古地理 聚煤规律 |
A Study on Early-Middle Jurassic Coal-bearing Strata Sequence-Paleogeography and Coal Accumulation Pattern in Kamst Coalfield,Xinjiang |
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| Liu Zhixun,Tian Jijun,Zhang Guoqing,Yang Shuguang,Dai Hongzhang.A Study on Early-Middle Jurassic Coal-bearing Strata Sequence-Paleogeography and Coal Accumulation Pattern in Kamst Coalfield,Xinjiang[J].Coal Geology of China,2014(10):1-6. | |
| Authors: | Liu Zhixun Tian Jijun Zhang Guoqing Yang Shuguang Dai Hongzhang |
| Institution: | Liu Zhixun;Tian Jijun;Zhang Guoqing;Yang Shuguang;Dai Hongzhang;Development and Research Center,China Geological Survey;College of Geology and Exploration Engineering,Xinjiang University;Xinjiang Bureau of Coal Geological Exploration;Schoolof Earth Sciences and Resources,CUGB; |
| Abstract: | Based on lower and middle Jurassic sequence stratigraphic analysis in the Kamst coalfield, Xinjiang, analyzed relationship between coal accumulation stage paleogeography and coal accumulation. The result has shown that the sequences I-II （Badaowan For-mation） were controlled by synsedimentary Ulungur deep fault and secondary faults. From east to west, strata and coal seam thickness are gradually thickening;coal seams were mainly formed in braided river delta plain. In Kamst Nos.1-10 districts, Pubei mine area and Kamst middle part have formed coal rich zones with 5~10m coal seam thicknesses. The sequence III （Sangonghe Formation） formed during Ulungur depression lake massive expansion period is a sedimentary sequence formed during a major transitional period from flu-vial-delta plain environment to lacustrine environment, generally no coal formed. The sequences IV-V （Xishanyao Formation） were controlled by sedimentary environment and lake level changes;coal seams were formed in lacustrine delta plain, strongly reformed by Yanshanian tectonic movement, the Xishanyao Formation strata have been eroded in middle and east parts of the coalfield. |
| Keywords: | Kamst coalfield Jurassic System paleogeography coal accumulation pattern |
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