bench placer

bench placer

[′bench ‚plās·ər]
(geology)
A placer in ancient stream deposits from 50 to 300 feet (15 to 90 meters) above present streams.
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References in periodicals archive ?
High bench placers, including Mary's Bench, and Eureka Bench, which were previously test mined by Silverado, were cross cut by the channel during an inter-glacial erosion as the main glaciers in the area retreated.