alluvial deposits

He had scouted the coast earlier and seen several alluvial deposits.

Alluvial deposits of diamonds are believed to have been exhausted.

Only the alluvial deposits are being worked employing 15,000 miners around the Lake.

The river has been affected by mining in the region with alluvial deposits.

Several of the islands have been joined to the mainland by alluvial deposits.

It can be found in boggy habitats and recent alluvial deposits.

Rich alluvial deposits spilled forth 300 tons of gold a year.

The Ganges delta is rising as a result of alluvial deposits.

The local soil is mainly clayey with some alluvial deposits.

Sand and gravel has been mined from the alluvial deposits in recent years.

Except for recent alluvial deposits, there are no other known Cenozoic rocks.

For many years gold was abundant in alluvial deposits.

Over time the site was buried under alluvial deposits, up to 8 meters deep, long thought to be the result of river flooding.

Diamonds are also found in the alluvial deposits in the province.

Downstream of the diversions the creek fans out into alluvial deposits.

There are also more recent alluvial deposits beside the course of the River Chew.

Some of the valleys are floored with alluvial deposits.

The river gets its name from the white jade that is often found in its alluvial deposits.

Besides areas of alluvial deposits, there are also white sand zones which have built up from tidal action.

The traps are overlain by thin alluvial deposits along the major rivers.

There were also small concentrations of gems scattered through the hills around the city, most in alluvial deposits.

Historically diamonds were known to be found only in alluvial deposits in southern India.

Geologically, the District consists of alluvial deposits and desert.

This turned out to contain Queensland's richest alluvial deposits.

This followed the disastrous fall in tin prices as large alluvial deposits began to be exploited elsewhere.