Basalt columns
The basalt flow exposed along the wall of this canyon exhibits well-developed columnar jointing. On many column faces one can recognize regular "chisel marks," created by the incremental growth of the column face by the coalescence of many individual fracture surfaces.
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Format: | Other/Unknown Material |
Language: | unknown |
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Oberlin College Library
1996
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Online Access: | http://server15963.contentdm.oclc.org/u?/p15963coll1,1699 |