Geology . sist. GreatSalt Lake is apparently doomed to still further decrease by the diver-sion of water from the feeding streams for purposes of irrigation. Terraces, deltas, and embankments of other sorts were developedabout the shores of Lake Bonneville wherever the appropriate con-ditions existed (Figs. 537-539), and the aridity of the climate sincethe lake sank below them, has allowed them to remain with little modi-fication by erosion. As the lake dried up, deposits of salts were made,among which sodium chloride and sodium sulphate are most crystals are plentiful, and in
Geology . sist. GreatSalt Lake is apparently doomed to still further decrease by the diver-sion of water from the feeding streams for purposes of irrigation. Terraces, deltas, and embankments of other sorts were developedabout the shores of Lake Bonneville wherever the appropriate con-ditions existed (Figs. 537-539), and the aridity of the climate sincethe lake sank below them, has allowed them to remain with little modi-fication by erosion. As the lake dried up, deposits of salts were made,among which sodium chloride and sodium sulphate are most crystals are plentiful, and in places they have been heapedup into dunes. Great Salt Lake is estimated to contain 400,000,000tons of common salt, and 30,000,000 tons of sodium sulphate. Both THE PLEISTOCENE OR GLACIAL PERIOD. 459 are extensively utilized. Calcium carbonate, though not shown inquantity by analyses of the water, is precipitated in the form of ooliteabout the shores of the lake, probably through the influence of MAP OF THE 1) E LT A S IAKE BONNEVILLE by the LOGAN riven By V iJ Johnson Profile \ Si-ale .l,-i>t>lr th() QEOLOQY. «.• - ate
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectgeology
