1. This is a block of felsic Rhyolite from a lava field on Hughes Mountain in Missouri.
Felsic magma is often released in explosive eruptions, and often contains clasts of other rock, such as pumice (a porous volcanic rock).  The pumice was compressed as the lava on top of it cooled, which is why the dark red bands are contained within the Rhyolite as stripes.
GO SCIENCE!

    This is a block of felsic Rhyolite from a lava field on Hughes Mountain in Missouri.

    Felsic magma is often released in explosive eruptions, and often contains clasts of other rock, such as pumice (a porous volcanic rock).  The pumice was compressed as the lava on top of it cooled, which is why the dark red bands are contained within the Rhyolite as stripes.

    GO SCIENCE!

    2 years ago  /  18 notes

    1. the-roche-limit reblogged this from lifeacommentary and added:
      rhyolite is definitely my favorite rock!
    2. lifeacommentary posted this