Glacial Lake Outburst Floods: New Research Investigates Broader Range of Triggering Factors April 12, 2024 Salma Begum Glacial lakes form when meltwater is trapped behind a dam, usually glacial ice, bedrock or a type of moraine (terminal types being an unconsolidated pile of debris at the maximum extent of the glacier). http://dlvr.it/T5R1wP Tweet Share Share Share Share