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a. A residual accumulation of rock fragments remaining on a surface after
the finer material has been blown away by winds.
See also: desert pavement; pebble armor. AGI
b. Coarse-grained material that is rolled or dragged along the bottom of a
stream at a slower rate than the finer material, or that is left behind
after currents have winnowed or washed away the finer material. Syn: lag;
lag deposit. AGI
Source:
Dictionary of Mining, Mineral, and Related Terms
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