How glaciers exploit prior fractures to quarry beds of partially intact rock

Quarrying is a significant, locally dominant glacial erosion process. For settings where glaciers cut into partially intact bedrock, prior work has hypothesized that it occurs when glaciers impose spatially concentrated loads to drive fracture growth in the underlying rock, linking pre-existing fractures to complete dislodgment. This prior work, however, has not rigorously explained how most of this process occurs or whether it can leave the bed with a form susceptible to subsequent quarrying. W