A pebble is a clast of rock with a grain size of 4 to 64 millimeters based on the Krumbein phi scale of sedimentology.
Picture © 2007 onwards by Dr Himanshu Tyagi. All the photographs in this blog are copyright protected and can not be reproduced or stored in any medium without the written permission from Dr Himanshu Tyagi.
Tuesday, January 02, 2007
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