Diamond-bearing kimberlites occur in the Northwest Territories, Saskatchewan and Ontario.What type of glacial deposit would be most useful for tracing kimberlite cobbles and minerals directly to their bedrock source area?

Question

Quizplus · Accepted Answer

End or ground moraine formed by a continental ice sheet would be the most useful glacial deposit for tracing kimberlite cobbles and minerals directly to their bedrock source area. This is because these deposits are the closest to the actual source area and have not undergone significant transportation or modification. Kames and kame terraces are hills or ridges of sand and gravel deposited on the landscape by meltwater from a glacier, while lateral or medial moraines are ridges of glacial debris that accumulate along the sides or in the middle of a glacier. These deposits may have been transported from the actual source area and are therefore less useful for tracing kimberlite cobbles and minerals back to their source.

Diamond-Bearing Kimberlites Occur in the Northwest Territories, Saskatchewan and Ontario