blue ice

American  

noun

Geology.

1. the oldest and densest ice in a glacier, distinguished by a pale-blue color.

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Example Sentences

But the snapshots across the transition found in the blue ice suggest CO2 levels held steady between about 220 ppm and 250 ppm.

From Science Magazine • Apr. 21, 2024

This potential relies mainly on data-driven analysis to identify unexplored meteorite stranding zones and mapping areas exposing blue ice where meteorites are often found.

From Science Daily • Apr. 8, 2024

When we began our descent to the sea ice off Ross Island's coast, I glimpsed long fractures, snow-packed ridges, and pockmarked blue ice blown barren by the polar wind.

From Salon • May 29, 2023

By far the most effective tools were two more recent acquisitions — a pair of chattering electric jackhammers, which could drill into hard blue ice that in some places was more than a foot thick.

From Seattle Times • Apr. 3, 2022

Instead, they were surrounded by great boulders of blue ice and beneath their feet snow lay thickly frosted upon the ground.

From "Mary Poppins" by P. L. Travers