There are many moraine slopes which are high and steep along the north bank of Purlung Tsangpo River because of construction of Sichuan-Tibet Highway.

The research area is located at the head area of Urumqi Rjver，above 3000m and in al-pine periglacial environment．On the moraines of the Last Glaciation and Neo一glaciation al-pine meadow soils develop from 3000 to 3700 m.

This paper is intended to present a preliminary model of transfo(?) mation from moraine to the deposits of glacial debris flow, to describe the distinguishing marks between the two types of deposits, and to compare and study some characteristics of granularity, light and heavy mineral, clay mineral and gravel fabric of them.