Some 80 percent to 90 percent of cases are of the so-called dry form, in which yellow deposits accumulate on the retina.

This deposit slowly accumulated between 1 million and 50,000 years ago.

In the course of this period, deposits of sand, silt and clay of up to 25 meters accumulated in the cave.

Many people with low or moderate incomes, by contrast, would find it hard to deposit money in the accounts or allow any deposits to accumulate over the years.

As vegetable matter from these forests decayed, enormous deposits of peat accumulated, which later changed into coal.

These deposits accumulated continuously for thousands of years.

Any precipitable deposits (colloquially, "mud") will emerge from solution in this circuit and accumulate in the final water drum.

Ironically these deposits of sedimentary organic materials may have accumulated into lipid rich deposits.

Where thick deposits of heat modified oil or fat have accumulated the judicious use of a scraper may be indicated.

The most suitable places for fossilisation are in seas and lakes where sedimentary deposits like sandstones and limestones are slowly accumulating.