Definition of river-bar placer
i. Gravel flats and terraces laid down by rivers when flowing at higher levels than at present. The deposits are sometimes gold or tin-bearing.
See Also: bench placer
ii. A term used in Alaska for placers on gravel flats in or adjacent to the beds of large streams.
See Also: bench placer
ii. A term used in Alaska for placers on gravel flats in or adjacent to the beds of large streams.