Century Dictionary and Cyclopedia
- n. In geology, a crack formed in a rock by exposure to the sun's heat at the time the rock was consolidating.
“This very Summer, on land, which, with reference to this very subject, the owner stated to be impervious, we put a walking-stick three feet into a sun-crack without finding a bottom, and the whole surface was a network of cracks.”
“a walking stick three feet into a sun-crack, without finding a bottom, and the whole surface was what Mr. Parkes, not inappropriately, calls a network of cracks.”
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