bench gravel meaning in Hindi

Examples

1. The bench gravels are made up entirely of country rocks.
2. Most of the gold in the gravels was found at or near bedrock in gulches, but much gold was recovered from bench gravels in the area.
3. The outer and higher bench gravel is on the clay which lies directly upon the rim rock, but toward the centre of the basin, where there are lower layers of gravel, is assumed to be bedrock.