Substance Characteristic and Formation Mechanism Analysis of Suo Duoxi Deposit

Abstract

The paper studied characteristic of the morphology, substance and formation mechanism of Suo Duoxi deposit body in the Su Walong hydropower station reservoir area, focused on analysis of substance composition and formation at front area of deposit body (zoneII) and finally inferred the geological formation process and reached the formation mechanism . The results show that the block stones are main part of material of Suo Duoxi deposit and sandwiches gravel soils, but it is different from other four zones that the zone II takes gravel with less viscous as the skeleton and mixed up with uneven sizes and irregularly shape stones. The forming reason of deposit is the landslides at left bank of Jinsha River and rockfall of the steep mountain back of the deposit body on the right back with the effect of weathering, rainfall and glacial erosion and so on. Geological formation process of deposit determined the geomorphic features, but also changed paleocurrent of Jinsha River.