What features form when rocks bend?

When the sedimentary layers of rocks are soft and under pressure they can be bent into curved structures called geosynclines. One theory is that heat partially melts the sedimentary layers of rocks allowing them to be bent into the curved shapes.

i would say it is

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.