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Plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the weathering and erosion of pieces of bedrock, especially large "joint blocks". This occurs in a type of glacier called a "valley glacier".
In addition to chemical and physical weathering of hydraulic action, freeze-thaw cycles, and more, there is a suite of processes which have long been considered to contribute significantly to bedrock channel erosion include plucking, abrasion (due to both bedload and suspended load), solution, and cavitation.
Diagram of glacial plucking and abrasion. Glaciers erode terrain through two principal processes: plucking and abrasion. [64] As glaciers flow over bedrock, they soften and lift blocks of rock into the ice. This process, called plucking, is caused by subglacial water that penetrates fractures in the bedrock and subsequently freezes and expands ...
Agents of erosion include rainfall; [4] bedrock wear in rivers; coastal erosion by the sea and waves; glacial plucking, abrasion, and scour; areal flooding; wind abrasion; groundwater processes; and mass movement processes in steep landscapes like landslides and debris flows. The rates at which such processes act control how fast a surface is ...
We are living in the Age of Plastic. In 2015, the world's industries created 448 million tons of it -- twice as much as it did in 1998 -- and the rate of production is only accelerating. However ...
Plucking (hair removal), the removal of hair, fur, or feathers; Feather-plucking, a behavior in birds; Plucking post, as used by birds of prey to dismember their prey; Plucking (glaciation), a process related to glaciers
Pennsylvania’s Punxsutawney Phil might be the most well-known weather-predicting groundhog, but a new list casts doubt on his accuracy. Phil did so poorly that even nonliving critters outshine ...
Glacial plucking is the removal of large blocks from the bed of a glacier. [ 11 ] Much of the silt in till is produced by glacial grinding, [ 4 ] and the longer the till remains at the ice-bedrock interface, the more thoroughly it is crushed.