Discovery of the Early Pleistocene Kunlunhe Conglomerate in Golmud of oft-com:office:smarttags" />Qinghai Province and Its Geological Significanceoft-com:office:office" />

• 责任者：Zhao Xitao (Institute of Geology and Geophysics ; Chinese Academy of Science ; Beijing 100029 ; China) ; Hu Daogong
• 刊名：Journal of Geomechanics
• 出版年：2010
• 卷期：16(1)
• 关键词：早更新世 ; Lower Pleistocene ; 砾岩 ; conglomerate ; 昆仑山 ; Kunlun Mountains
• 页码：p.1-10
• 图表：illus., 2 tables, 17 refs.
• 分类号：0802
• issnNo：ISSN1006-6616
• isbnNo：CN11-3672/P

In this paper, the authors report the discovery of over oft-com:office:smarttags" />20 m of Ca-cemented fluvial gravels in the valley of Kunlun River, named the Kunlunhe conglomerate. Its distribution, the unconformity with such overlying strata as the Nachitaigou Formation, the Sanchahe Formation and the deposits on lower terraces, as well as the ESR dating of the Ca-cemented gravels (1 042±104 ka and 1 269±126 ka), all suggest that the Kunlun-Golmud River valley had been formed before 1.27～1.42 Ma, and cut deeply down to its present bottom. After that, the repeated incisions and accumulations after that were not due to tectonic movements, but to erosion and movement caused by climatic changes during the glacial-interglacial periods. Furthermore, the strong uplift of the Kunlun Mountains with respect to the Qiadam Basin should occur before at least 1.27～1.42 Ma. oft-com:office:office" />