Page 286 - Handbook of Gold Exploration and Evaluation

252 Handbook of gold exploration and evaluation

4.32 Schematic representation of Pleistocene stratigraphy and associated gold
placer mines in north central British Columbia.

Wandering gravel-bed placers

Wandering gravel-bed rivers have repeatedly scoured and reworked older
placers in the Cariboo Mining District of British Columbia (Eyles and Kocsis,
1989). Pay zones in these deposits are dominated by two distinct fluvial styles:
braided rivers and `wandering gravel-bed streams' (Church, 1983). The braided
river systems were formed under cold boreal climatic conditions with sparse
vegetation, increased mass movement on slopes and decreased fluvial transport