Magmatic Concentration

question 43

Multiple Choice

Magmatic concentration:

• A) occurs when sand and gravel accumulate in riverbeds.
• B) separates iron-containing rock from silicon-containing rock.
• C) results in the separation of rock layers based on grain size.
• D) is responsible for some deposits of phosphorus and zinc.
• E) is responsible for some deposits of manganese, and sulfur.