dry permafrost

dry permafrost

[¦drī ′pər·mə‚frȯst]
(geology)
A loose and crumbly permafrost which contains little or no ice.
References in periodicals archive ?
Cool, dry permafrost can preserve prehistoric DNA like a natural freezer, but Egypt is a gene incinerator.
The quantity of water in the permafrost may also vary greatly, from almost nil in some rocks in dry permafrost to the equivalent of 400% of liquid water.