As they retreated, their melt water left thick deposits of sand and gravel.

Due to the high sea level there was extensive accommodation space for sedimentation so that thick deposits could form.

One marsh received thick deposits of mousse, which were still visible two decades after the disaster.

The 20 m thick deposits were accumulated from 125,000 years ago.

These 30-80 meter thick deposits are believed to have been formed from the action of water.

Shropshire was no exception; these new rivers caused thick deposits in the area.

Now the thing is to find the thick deposit, the lode.

As this area formed the flood plain for high tides, it has a thick deposit of clay.

The bottom of the lake is equally coated with this thick deposit.

Marine evaporites tend to have thicker deposits and are usually the focus of more extensive research.