西藏伦坡拉盆地油页岩特征及分布规律

伦坡拉盆地有较大规模的油页岩出露，根据油页岩工业划分标准，伦坡拉油页岩属于含油率较高的高灰分、特低硫型油页岩。伦坡拉油页岩主要发育于丁青湖组之中，形成于半深湖-深湖相沉积环境。通过岩相古地理研究，发现伦坡拉油页岩厚度受沉积相带控制，呈规律性展布，从深湖-半深湖-浅湖-滨湖呈环带状由中心向四周逐渐减小的变化趋势，位于盆地中央半深湖-深湖相区的伦坡日、蒋日阿错地区油页岩厚度相对较大，具有广阔的开发利用前景。

Characteristics and Distribution Rule of Oil Shale in Lunpola Basin,Tibet

There are large-scale outcrop of oil shale in Lunpola basin, and the Lunpola oil shale is characterized by high oil content, high ash and special low sulfur according to the criteria of the oil shale industry classification. The Lunpola oil shale mainly developed in the Dingqinghu Formation, and had been formed in a semi-deep to deep lacustrine depositional environment. Based on collected data and lithofacies paleogeography study, the thickness of Lunpola oil shale was controlled by sedimentary facies, and gradually decreased in ring trend from deep lacustrine facies, semi-deep lacustrine facies, shallow lacustrine facies to lakeshore facies. The oil shale thickness is relatively large in Lunpori and Jiangriacuo area, which are located in the basin center, and has great prospects for development and utilization.