rotten ice

rotten ice

[′rät·ən ¦īs]
(hydrology)
Any piece, body, or area of ice which is in the process of melting or disintegrating; it is characterized by honeycomb structure, weak bonding between crystals, or the presence of meltwater or sea water between grains. Also known as spring sludge.
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References in classic literature ?
For a minute Jo stood still with a strange feeling in her heart, then she resolved to go on, but something held and turned her round, just in time to see Amy throw up her hands and go down, with a sudden crash of rotten ice, the splash of water, and a cry that made Jo's heart stand still with fear.
This is called candle ice, a form of rotten ice that develops in columns perpendicular to the surface of the lake.
The ice you have been seeing lately, that dark gray color, is what firefighters call rotten ice," said Worcester Fire Capt.
Rotten ice denotes packs which are in the process of melting.