boulder
Quick Summary
A boulder is a detached, rounded, or worn mass of rock. It is a term that can also refer to a glacial boulder, which is a boulder carried by glaciers far from its original location. The word "boulder" has been in use since 1607 and is derived from Middle English "bulder ston," a partial translation of a Scandinavian term for a large stone.12
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sand duneSandsLarger particles, such as small boulders, can be moved by the wind only on slippery surfaces (e.g., ice or wet saline mud) and never form into dunes.
Read MoreLarger particles, such as small boulders, can be moved by the wind only on slippery surfaces (e.g., ice or wet saline mud) and never form into dunes.
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caveSea caves, eolian caves, rock shelters, and talus caves…caves are openings formed between boulders piled up on mountain slopes. Most of them are very small both in length and in cross section. Some boulder piles, however, do have explorable interconnected “passages” of considerable length. Some of the largest talus caves occur among granite blocks in New York and…
Read More…caves are openings formed between boulders piled up on mountain slopes. Most of them are very small both in length and in cross section. Some boulder piles, however, do have explorable interconnected “passages” of considerable length. Some of the largest talus caves occur among granite blocks in New York and…
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