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Moraine
A moraine is any glacially formed accumulation of unconsolidated glacial debris (soil and rock) that occurs in currently glaciated and formerly glaciated regions on Earth (i.e. a past glacial maximum), through geomorphological processes.
== Characteristics ==
Moraines may be composed of debris ranging in size from silt-sized glacial flour to large boulders.
The debris is typically sub-angular to rounded in shape. Moraines may be on the glacier’s surface or deposited as piles or sheets of debris where the glacier has melted. Moraines may also occur when glacier- or iceberg-transported rocks fall into a body of water as the ice melts.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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