摘要
拉萨地区系统开展的第四纪地质研究工作是20世纪80年代末期至90年代中期由西藏地矿局区域地质调查大队对拉萨地区第四纪地形地貌、沉积物特征及成因类型做调查。由于受构造运动和古气候的影响,拉萨河谷地区第四纪沉积物的颗粒、颜色、结构、岩性等特征十分复杂。文章在前人研究的基础上,对拉萨河谷地区多次进行实地考察,建立西藏拉萨河谷第四系地层剖面,提出了拉萨河谷第四系沉积环境及其演变特征,为综合研究拉萨及周边地区第四系沉积环境、气候变化提供参考依据。
The quaternary geological systemic research in Lhasa area was started form late 1980s to mid 90s and the quaternary topography and geomorphology, sediment characteristics, and genetic types were investigated by regional geological survey team of geological department of Tibet. The granules, the color the structure and the lithology of the quaternary sediments in Lhasa Valley are very complex due to the influence of tectonic movement and past climate. In the present paper, the quaternary stratigraphical profile of Lhasa Valley was established based on previous research by different researchers and provided the sedimentary environment of Lhasa Valley and its evolutionary characteristics. This can be the baseline for research on the quaternary sedimentary environments and climate changes in the Lhasa Valley and its the surrounding areas.
基金
2012年度国家大学生创新性实验训练计划项目"拉萨河谷地区第四纪地质特征及其意义"阶段性成果
项目号2012CX010
