| 白培荣,马德胜,曾禹人,符宏斌,郭海.西藏九子拉地区上石炭-下二叠统来姑组冰海相混积环境特征浅析[J].贵州地质,2016,33(1):64-70 |
| 西藏九子拉地区上石炭-下二叠统来姑组冰海相混积环境特征浅析 |
| The Characteristics of Sedimentary Environment of Upper Carboniferous-lower Permian Laigu Formation in Jiuzila Area of Tibet |
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| DOI： |
| 中文关键词: 冈底斯带 九子拉地区 冰川作用 来姑组 沉积环境 |
| 英文关键词:Gangdise belt Jiuzila area Gaciation Laigu formation Sedimentary environment |
| 基金项目:西藏1∶5万九子拉地区四幅区域地质调查 （项目编号：1212011121230）；西藏1∶5万塔惹增地区四幅区域地质调查 （项目编号：1212011086035）；西藏1∶5万恐弄拉拉地区四幅区域地质调查 （项目编号：12120114062301）。 |
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| 中文摘要: |
| 研究区处于冈底斯带中北部，于晚古生代石炭-二叠纪冈瓦纳大陆北缘发生冰川作用并向北侧漂移。笔者通过剖面测量和面上地质填图调查，晚石炭-早二叠世来姑组为一套碎屑岩夹碳酸盐岩建造与冰川作用砾石沉积混积物，表现为冰融滑塌杂砾浅海沉积为主。通过对来姑组一段-三段地层中混积物的分析由底向顶建立冰海相沉积序列，重塑冰川事件的历史过程，恢复研究区来姑组沉积环境特征及古地理格局。 |
| 英文摘要: |
| The study area located at the north-central Gangdise belt. It drifts toward north when the glaciations occurred at the northern margin of Gondwanaland in Carboniferous and Permian of Late Paleozoic. According to the profile measurement and route survey，the lithology of Laigu formation are mixed deposits include caustic rock clip carbonate rock and glacial erratic boulder. Through the analysis of the gravel in the sediments at the first-third section of Laigu formation，the authors established a glacial sedimentary sequence and reshaping the glacial event，and restore the ancient landform at the study area. |
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