摘要
通过研究木里煤田构造特征、沉积充填序列来探讨研究区侏罗纪以来构造-沉积演化过程。研究结果表明:(1)研究区发育两组断裂——北西西向—北西向逆冲断断裂和北东—南西向右行走滑断裂,北西西向—北西向断裂相对发育,定型于晚燕山期;北东—南西向右行走滑断裂定型较晚,属喜马拉雅期的产物。褶皱形态以线状褶皱和等厚褶皱为主,属喜马拉雅期的产物。断裂-褶皱构成了单向冲断型复式向斜、单向冲断型复式背斜、对冲型复式向斜;(2)木里煤田侏罗系主要发育三角洲相、曲流河相、湖泊相;(3)木里煤田经历了断陷沉积期(侏罗纪)、隆升剥蚀期(白垩纪-渐新世)、广盆沉积期(中新世)、褶皱冲断期。
By studying structure characteristics and sedimentary fi lling sequences,this paper discussesthe Jurassic tectonic and sedimentary evolution process the study area,provides the basis for explorationand exploitation of coal resources in Muli Coal field.The result shows that:there are two groups offaults in the research area,which are NW-NWW thrust fault and NE-SW right lateral strike slip fault.NWW-NW fault formed in the late of Yanshan period isdeveloped.NE-SW right lateral strike slip faultis later and it is the outcome of Himalaya.Fold morphology is linear folds and thick folds,which is theresults of Himalaya.Fault-fold constitutes a one-way thrust type compound syncline,one-way thrusttype compound anticline,hedge type compound syncline.Delta facies,meandering river facies andlake facies are the main sedimentary facies in Jurassic of Muli Coal field.The coalfield went throughof rift sedimentary period(Jurassic),the period of uplift and denudation stage(cretaceous and theOligocene),wide basin sedimentary period(Miocene),and the period of Fold-thrust
作者
谭富荣
魏云迅
刘伟刚
杜芳鹏
雒铮
TAN Furong;WEI Yunxun;LIU Weigang;DU Fangpeng;LUO Zheng(Aerial Photogrammetry and Remote Sensing Center,China National Administration of Coal Geology,Xi’an,710199,China;Shaanxi Povincial Institute Of Energy Resource Chemical Engineerring,Xi’an,710069,China)
出处
《河北工程大学学报（自然科学版）》
CAS
2017年第3期79-84,共6页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金资助项目(41702144)
中国煤炭地质总局科技专项资金资助项目(2010-I-04)
关键词
木里煤田
构造特征
沉积充填
构造-沉积演化
Muli Coal field
Tectonic characteristics
sedimentary
Structural-sedimentary evolution
