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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
September 20, 2020 • 01:06 am
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30 points
30 points
- IIT JAM
- Geology (GG)
Sir, please explain these 3 terms
Types of Placer Deposits Wa ElUvial Placers : Placer deposits along hill slopes are formed due to weathering and erosion gf the country rocks containing low-grade deposits of the desired
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Rahul kumar![best-answer]()
Placer deposits is a type of mechanical concentration deposit. It results due to density contrast if high density ore mineral and low density sediments. Eluvial placers- Placer deposits where materials are very less transported i.e. nearer to the source area. Diluvial placers- A kind of placer deposit where heavy ore minerals are concentrated on below slope region. Generally occur in talus/scree deposits. Proluvial (Coluvial) placer- Placer deposit formed by gravity actions. Generally found below the mountain slopes. Alluvial placers- These type of placers are formed by fluvial processes. Ore minerals of high density transported along with sediments separat out because of higher density and form placer deposits.