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An additional source of information is underwater photography, which has
provided valuable data on sediment types and current systems on the terrace.
Some of these will now be discussed. Beach, Sediments and current systems.
Mineralogy of the sandstone suggests that during the earlier cycles sediments
were derived mainly from the removal of weathered material from a soil-covered
ancient land surface. Later sandstones, however, indicate that their sediments ...
A scant vegetative cover would permit maximum erosion of an ill-protected land
surface and much detrital sediment would ... Under proper conditions, which
need not be detailed here, deposition of these sediments in an adjacent basin
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review