利用新近系煤的镜质组反射率计算滇西高原的隆升幅度  

Uplifting range of the western Yunnan Plateau by vitrinite reflectance of coal

作　　者：张绪教[1] 何科昭[1] 

机构地区：[1]中国地质大学(北京),北京100083

出　　处：《地质通报》2012年第2期235-240,共6页Geological Bulletin of China

基　　金：国家自然科学基金重点项目<滇西地区印支期后的构造演化>(批准号:9487002-2);中国地质调查局项目<云南马厂幅;道街坝幅1:5万区域地质调查>(编号:1212007844004);<泛亚铁路大理至瑞丽沿线地质构造综合研究>(编号:1212010814054)

摘　　要：为了定量地计算滇西高原的隆升幅度,在滇西中甸、保山、景东、景谷四地分别取新近纪煤岩样,在野外实测煤层上覆地层残留厚度和测得样品的镜质组反射率并确定有效作用时间后,根据三者关系曲线图计算出成煤时的最大古地温和最大埋深,进而计算出滇西高原上新世时期自北而南的隆升幅度在1500~1700m之间。该时期隆升表现出总体均匀抬升的特征。For the purpose of calculating the uplifting range of the western Yunnan Plateau, Zhongdian, Baoshan, Jinggu and Jingdong were selected to study the Neogene coal rock. Based on measuring residual depth of strata overlapping on coal strata in field, testing the data of vitrinite reflectance of these samples and determining effective coalification time in laboratory, the authors worked out the maximum paleogeotemperature and the depth of coal rock according to this principle and Bostick＇s correlation graph of the three ele- ments. The uplifting range of western Yunnan in Pliocene-Pleistocene was in the range of 1500-1700 m from north to south, and the character of overall regular uplifting appeared.

关 键 词：滇西高原隆升 隆升幅度 镜质组反射率 

分 类 号：P542.1[天文地球—构造地质学]