Geology evidence for the earths structure

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what are kimberlite pipes?
a type of volcanic rock that contains diamonds- found in kimberly South Africa
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where do kimberlite pipes form?
deep within the mantle
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what depth are mines?
5km deep
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what depth are boreholes?
13km deep
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what do mines and boreholes provide?
Evidence for the composition of the crust
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what are xenoliths?
a rock fragment foreign to the igneous rock in which it occurs
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what do xenoliths provide evidence for?
mantle rocks
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What are ophiolites?
pieces of oceanic crust that have been thrust up onto the continental crust
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what do ophiolites provide evidence for?
the composition and structure of the oceanic plate
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Card 2

Front

where do kimberlite pipes form?

Back

deep within the mantle

Card 3

Front

what depth are mines?

Back

Preview of the front of card 3

Card 4

Front

what depth are boreholes?

Back

Preview of the front of card 4

Card 5

Front

what do mines and boreholes provide?

Back

Preview of the front of card 5
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