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Stop 2, Ring Mountain Preserve: Greenstone

From Andrew Alden, About.com

Oceanic basalt is transformed by high pressure and temperature to greenstone, erasing its original shapes and appearance.
Gallery Index

Image 12 of 116

Altered basalt knockerGeology Guide photo

Day 1, Coast Range: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

Day 2, Sierra Nevada: 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18

Day 3, Sierra Nevada: 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28

Day 4, Coast Range: 29 | 30 | 31 | 32 | 33

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