Page 33 - Petrophysics 2E

1 COnRSEORAlNED IGNEOUS ROCKS FINE-GAAlNED

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EXTRUSIVE
INTRUSIVE
GRANITE I DIORITE 1
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(Hlgh Temperature Colored Formatlon) (Low Temperature Formation)
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Llght
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GNUSS AMPHIBOLITE
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(Banded Felspar) (Hornblende) (Banded Felspar) (Mlca) (Flne ralned) (Hornblende) (Green Mlca) A
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L,,,-,------.---L,-, L,-,~,,,L,,,-L----L-,-I
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METAMORbHIC ROCKS
Figure 1.1. Origin of theprincipal metamorphic rocks.