Thus, crevasse depths are a function of the rate of stretching and the temperature of the ice.
Crevasses deepen until the rate of surface stretching is counterbalanced by the rate of plastic flow tending to close the crevasses at depth.
This results in increased crevasse-channel width, depth and length, and redeposition of eroded lacustrine coastal-plain sediment at the junction of the crevasse channel with the present-day river.
He had enough speed to keep going to the far side, but behind him, what looked like solid snow, was now a gaping icy hole, a crevasse descending to the depths of the glacier.
The real horror in Thin Air lies in the sheer scale of things: the height of the pinnacles, the depth of the crevasses, the cold and the silence, the distance from anything familiar, the huge otherness.
Tracked pontoons, driven through and over the ice-features called sastrugi – described as like crossing a corrugated roof – would start to disintegrate; stuck in a crevasse, they risked vanishing into bottomless depths.
Crevasses deeper than 50 metres (160 feet) are rare in temperate mountains, but crevasses to 100 metres or more in depth may occur in polar regions.
One of the graduate students poked the snow around Bahadur and it collapsed, revealing the crevasse's multicolored walls and its seemingly bottomless depth.
Frozen deaths in the depths of crevasses.
In certain cases crevasses can penetrate into the depths of the cryo-section of a vitreous sample and affect the underlying biological ultra-structure, however, in ultra-thin sections (< 50 nm) these artifacts appear to be non-intrusive to the biological ultra-structure.
