Water Supply and Irrigation Papers of the United States Geological Survey . ,1. TELEGRAPH POLE NEAR PALM SPRINGS STATIONDEEPLY CUT BY WIND-BLOWN ? B. BOWLDER OF GNEISS NEAR PALM SPRINGS STATION, ETCHED BY WIND-BLOWN SAND. GEOLOGIC SKETCH. 27 From the vicinity of Mammoth station to a point a few miles southof the Mexican line, a distance of 40 or 50 miles, there is a continuousbelt of dunes (PI. VIII), from 2 to 6 or 8 miles wide. An approaching sand storm in this region may always be seen whileit is yet a long distance off, because the air is filled with dust to aheight of several hundr


Water Supply and Irrigation Papers of the United States Geological Survey . ,1. TELEGRAPH POLE NEAR PALM SPRINGS STATIONDEEPLY CUT BY WIND-BLOWN ? B. BOWLDER OF GNEISS NEAR PALM SPRINGS STATION, ETCHED BY WIND-BLOWN SAND. GEOLOGIC SKETCH. 27 From the vicinity of Mammoth station to a point a few miles southof the Mexican line, a distance of 40 or 50 miles, there is a continuousbelt of dunes (PI. VIII), from 2 to 6 or 8 miles wide. An approaching sand storm in this region may always be seen whileit is yet a long distance off, because the air is filled with dust to aheight of several hundred feet. An estimate of the amount ofmaterial moved at such a time would be interesting, and thoughexact figures can not be obtained suggestive estimates are possible. Saline deposits.—The bottom of the Salton depression before itwas covered with water as a result of the inflow of the ColoradoRiver was a salt-incrusted marsh. Within certain sections the saltcrust was 6 inches or 1 foot thick, and sufficiently pure to permit itto be gathered in a commercial way and marketed at a good New Liverpool Salt Company undertook the commerc


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