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Page 209
... sand size , as on the Gulf Coast of Texas , will they be formed into dunes . Silt is more easily picked up by the wind but is carried away faster than sand , and there are few signs of dunelike bed ... sand Sand Sheets and Sand Dunes 209.
... sand size , as on the Gulf Coast of Texas , will they be formed into dunes . Silt is more easily picked up by the wind but is carried away faster than sand , and there are few signs of dunelike bed ... sand Sand Sheets and Sand Dunes 209.
Page 212
... sand seas are there extensive continuous areas of dunes . There are usually many corridors of firm sand sheet or desert floor on which travel is easy and routes often follow these in a tortu- ous pattern . The ... Sand Sheets and Sand Dunes.
... sand seas are there extensive continuous areas of dunes . There are usually many corridors of firm sand sheet or desert floor on which travel is easy and routes often follow these in a tortu- ous pattern . The ... Sand Sheets and Sand Dunes.
Page 214
... sand grains are , however , still poorly sorted in these rocks . Submarine sandstones are common as river - channel sands , tidal - channel sands , and shallow submarine sands swept by unidirectional currents . Mature sandstones are ...
... sand grains are , however , still poorly sorted in these rocks . Submarine sandstones are common as river - channel sands , tidal - channel sands , and shallow submarine sands swept by unidirectional currents . Mature sandstones are ...
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