earth comp mineralogy

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21 Terms

1
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common crust minerals

Si, O, Fe, Al, K, Ca, Mg, Na

2
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continental crust average rock density

2.7 g/cm³

3
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thickness

35-40 km

4
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composition

felsic

5
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avg rock?

granite

6
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high comp of what elemetns

SiO2, K, Na

7
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minerals?

quartz, feldspars

8
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OCEANIC CRUST! rock density?

3.0 g/cm³

9
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thickness?

7-10 km

10
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composition?

mafic

11
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avg rock?

basalt/gabbro

12
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elements?

Ca, Fe, Mg

13
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minerals?

pyroxenes, plagioclase

14
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MANTLE elements?

Ca, Mg, Fe

15
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composition?

ultra mafic

16
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minerals?

olivine, pyroxenes

17
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rock?

peridotite

18
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thickness?

3,000 km

19
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density

very dense

20
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outer core

liquid

21
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inner core

Fe, Ni