云南省宁洱-正兴地区中轴构造带地质特征及构造变形序列浅析  

Geologic Feature and Tectonic Deformation Sequence of Middle Axial Tectonic Belt in Ning’er-Zhengxing District of Yunnan Province

作　　者：董朝芳 杨政[1] 任洪超 李瑞卿 DONG Chao-fang;YANG Zheng;REN Hong-chao;LI Rui-qing(Yuxi Institute of Geology and Mineral Resources,Yunan Institute of Geology&Mineral Resources Exploration,Yuxi 653100,Yunnan,China)

机构地区：[1]云南省地质矿产勘查院玉溪地质矿产所,云南玉溪653100

出　　处：《承德石油高等专科学校学报》2021年第3期1-5,共5页Journal of Chengde Petroleum College

摘　　要：为了研究兰坪盆地与思茅盆地之间隆起的南北向至北北西向构造带即“中轴构造带”的地质特征及构造变形序列特征,在1∶5万勐烈、上把边等5幅区域地质调查中,通过地质填图工作及综合研究对比等工作,对调查区内中轴构造带的表现形式、物质组成、地质特征及其与成矿的联系作了系统研究,认识到中轴构造带主要由德化断裂带、宁洱断裂带及磨黑断裂等组成。该构造带具有延伸稳定、切割深及多期活动等特征,其中德化断裂带和宁洱断裂表现为背冲式逆冲断层,磨黑断裂则是为正断层组合形成拗陷盆地,控制了古新世勐野井组的沉积,同时中轴构造带也是调查区内内生中低温热液型金属矿产的控矿和导矿构造。In order to study the geologic feature and tectonic deformation sequence of“middle axial tectonic belt”between Lanping basin and Simao basin,the regional geological survery is done in five units with the scale of 1:50000 for the Menglie,Shangbabian,Dehua,Pu’erxian and Zhendong in Yunnan province.After geological mapping and comprehensive research and comparison,systematic research has been made to study the form of expression,material composition,geology characteristics and connection with the mineralization of the middle axial tectonic belt.Study shows that the middle axial tectonic belt is composed with Dehua,Ning’er,and Mohei three tectonic belts.All the three tectonic belts get same characteristics with extended stability,deep dissesection and multiperiodic activity.The Dehua and Ning’er tectonic belt are back thrusted reverse fault,but the Mohei tectonic belt is several normal faults which forms faulted basin and controlls the sediments of Paleocence Mengyejing group.The middle axial tectonic belt is also the ore control and guiding structure of endogenetic deposit in the survey area.

关 键 词：中轴构造带 兰坪-思茅盆地 地质特征 构造变形序列 

分 类 号：P542[天文地球—构造地质学]