2020-11-25, 08:54 PM
(This post was last modified: 2020-11-25, 09:10 PM by DeathValleyDazed.)
(2020-11-25, 07:09 PM)Candace66 Wrote: On the topic of columnar joints, I got to visit the ones at the Gawler Ranges NP in Australia. They're reddish, and reportedly made of rhyolite.
Candace you are fortunate to see those formations. In DEVA per the NPS fact sheet there exists rhyolite around the Strozzi's Ranch but while hiking the area i don't recall any "organ pipe" like formations.
[b]Strozzi’s Ranch Rhyolite "Tr[/b]"
Pliocene-Oligocene
Mostly resistant, gray, white, and tan, rhyolitic lava flows and volcanic domes, and subordinate ashflow and airfall tuff. Includes many rhyolite and lesser trachyte and comendite masses, many of them associated with calderas.
Eocene and Paleocene
Granitic intrusions and volcanics, not known to be represented by sedimentary deposits.
https://www.nps.gov/deva/learn/nature/ge...ations.htm
Does anyone know if columnar formations exist in DEVA?
I just happened to be watching the latest video on a YouTube channel named "Astrum" which focuses on space topics. He mentions and shows close ups of an area on Pluto called "Sputnik Planitia" where convection creates polygonal cells. You can see them at about minute 6:30 here:
https://youtu.be/GMIbZ2k_OtQ
DEVA is other worldly in more ways than one!
Life begins in Death Valley