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FELSIC ROCKS: texture

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Because slate easily flakes, it's ideal for. Floors, roofs, blackboards. GNEISS. Gneiss is characterized by a banded or foliated pattern. ... – PowerPoint PPT presentation

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Title: FELSIC ROCKS: texture


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FELSIC ROCKS texture
Extrusive
Intrusive
Muy extrusive
Granite Rhyolite Obsidian
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Yosemite Valley El Capitan
Intrusive slow cooling, large texture
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ARROWHEADS
Extrusive fast cooling, fine texture
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Igneous Rock Types
Figure 11.7
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SLATE
Because slate easily flakes, its ideal
for Floors, roofs, blackboards.
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GNEISS
Gneiss is characterized by a banded or foliated
pattern. Granite is a precursor rock to gneiss
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Stress and Strain
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Folding
Figure 12.8
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Normal fault Footwall moves Up relative
to Hanging wall
FOOTWALL
HANGING WALL
Tension forces
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NORMAL FAULT
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Reverse Fault
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Strike-slip Fault
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San Andreas Fault
Figure 12.12
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