切区超基性岩体位于藏北超基性岩带的中段。自1953年以来,中国科学院西藏考察队、地质部西藏第二地质队先后在该岩体进行地质考察和普查找矿工作。1976—1978年我们配合西藏地质局第五地质队和物探大队在岩体上进行铬铁矿的普查找矿和研究工作。本文是上述地质工作的一些初步认识。 The ultra-basic rock mass in the cut zone is located in the middle of the ultrabasic belt in northern Tibet. Since 1953, the Tibet expedition team of the Chinese Academy of Sciences and the Second Geological Team of Tibet University of Geosciences have conducted geological surveys and prospecting work in this rock mass. 1976-1978 In cooperation with the Fifth Geological Team and Geophysical Brigade of the Tibet Bureau of Geology, we carried out general prospecting and prospecting of chromite on the rock mass. This article is some preliminary understanding of the above geological work.