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Kupsch, Walter Oscar
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Three stages in erosion of desert mountains

Three stages in erosion of desert mountains (Gilluly, Waters and Woodford, 1952, p. 358). Top shows alluvial fans at foot of only moderately eroded fault block. Centre shows broad pediment embaying deeply eroded range. Bottom shows residual "inselbergs" on broad graded surface of stream erosion.

Till fabric

Till fabric. A: Distribution of long (a) axes of late Wisconsin till plotted on equiareal polar coordinate paper. B: Same contoured as "petrofabric" diagram. Black: 4 per cent maxima. (Pettijohn, 1957, p. 76).

Results 1756 to 1770 of 1945