Adventures of Ranger Sarah(@RangerSarahAdv) 's Twitter Profile Photo

Ranger Sarah views the Grand Canyon. The story of the formation of the Grand Canyon begins almost 2 billion years ago with the formation of the igneous metamorphic rocks of the inner gorge. Above these old rocks lie layer upon layer of sedimentary rock.

Ranger Sarah views the Grand Canyon.  The story of the formation of the Grand  Canyon begins almost 2 billion years ago with the formation of the igneous   metamorphic rocks of the inner gorge. Above these old rocks lie layer upon layer of sedimentary rock.
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kai !?(@nauticaltide) 's Twitter Profile Photo

grizzly: roll a d10. now roll a d6. now roll a d20.

bizly: why am i rolling so many dice

grizzly: you are blinded for 3 hours and igneous kicks dirt in your face

chip:

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zukoi(@zukoboy_) 's Twitter Profile Photo

Nature is pretty so are RocksπŸͺ¨

These are scattered boulders on a massive metamorphic rock called porphyritic gneiss. (A metamorphosed igneous rock)

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GSAJournals(@GsaJournals) 's Twitter Profile Photo

Composition of effusive igneous rocks from the stand point of the agricultural evaluation of soil-forming bedrocks eurekamag.com/research/014/3…

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