Placerdepositsioonid
Placer deposits are geological formations that contain valuable minerals concentrated by natural processes, primarily through the action of water, wind, or gravity. These deposits are formed when minerals are eroded from their primary source rocks and transported by various agents to areas where they accumulate. The most common types of placer deposits are alluvial, eluvial, and marine.
Alluvial deposits are formed in riverbeds and floodplains, where minerals are deposited as the river slows
Eluvial deposits occur in soil and regolith, where minerals are leached from the underlying bedrock and accumulate
Marine deposits form in coastal and offshore environments, where minerals are transported by ocean currents and
Placer deposits are of significant economic importance, as they often contain high concentrations of valuable minerals