Agattu is unique among the volcanic Aleutian Islands in being composed almost entirely of well-bedded sedimentary rocks. These rocks were clearly deposited in water and are composed chiefly of ...
WRITING in 1843, Dr. Abel determined the main structure of the island to be of basaltic trap, granite, siliceous and schistose rock. Mr. Kingsmill in 1865, in his excellent papers on the Geology of ...
THESE “Notes,” which are reprinted from the Canadian Naturalist, cannot fail to interest European glacialists. Especially valuable for purposes of comparison are the detailed notes on the fossils ...
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