natural deposit

To Silicon Valley, personal information had become a kind of limitless natural deposit, formed in the digital ether by ordinary people as they browsed, used apps and messaged their friends.

While the evidences are not slight, that a vast area of similar remains lies buried under the soil, which, for ages has been accumulating upon them, by natural deposit during the rainy seasons, and the gradual abrasion of the adjacent mountains.

The sellers went during the night and secreted the gold-dust in the banks, so that it would come to light, as a natural deposit, when the earth was turned up.

The extremely rich natural deposit of rock salt was, at that time, in the hands of the Confederate government, being, indeed, the main source of supply of this indispensable article for the whole Confederacy, especially for the region between the Mississippi and the Atlantic.

This production, it is now well understood, is no longer carried on most advantageously in the neighborhood of any one great natural deposit of ore.