Kellie found some incredible rock exposures in the #OldSnowy area of the #GoatRocksWilderness. This one Old Snowy area was named “Marble Cake” (flow-banded lavas), with others called "Black Licorice" and "Fruit Cake". #hungrygeologist @osu.ceoas  'Red sky at night, sailors' delight.' A red sky during sunset and sunrise is caused by small particles trapped high pressure in the atmosphere. The particles cause the refractive index to shift causing the sky to appear red. A red sky at night implies a high pressure system is moving in from the west (and a low pressure system has passed to the east) and the following day will likely be dry and sunny. The inverse is true with a red sky during sunrise and 'sailors take warning'.  Pep Cabré exploring an ancient lava tube on Isla de Socorro. @cuacochi  Geology in the jungle is hard stuff! Like finding a needle in a haystack!An outcrop of tonalite exposed in an dry stream in the Ayum Forest Reserve, Ghana. Read about Helen McFarlane's adventure in the profile link.  Highly deformed graphitic schists of the Aileu Formation. Read all about the geologic adventures on Timor 🇹🇱 with @jkmlee. Link in profile!  Ash-flow tuff found in the Chisos Basin from Big Bend National Park @bigbendnps Read more about BBNP by Kellen Gunderson. Link in profile.  Ever seen a beach with green sand? Olivine, the green mineral here erodes from a nearby cinder cone and accumulates on the beach. Read about this and many other Hawaiian adventures in our most recent article by Gary Lewis. See link in bio.
 Evidence that ice has the power to tear down a mountain—crossing the striated bed of a #glacier on our way to #OldSnowyMountain in the #GoatRocksWilderness with @wall_kt (photo by Nathan Van Cleave). See link in profile to read more about Kellie's adventure in the ancient volcano of the #GoatRocks. @osu.ceoas #womeninscience  Hydrothermal field on Isla de Socorro by Pep Cabré  Spectacular mafic dyke from #IsladeSocorro. The Isla de Socorro is a volcanic island off the coast of Mexico. It is the only felsic volcano in the Pacific Ocean. Read all about this amazing  with @cuacochi. Link in profile.  @unimelb team of #geologists pose on a mountaintop in #TimorLeste. Read all about it in our latest article. Link in profile. Photo by @jkmlee  Normal fault exposed in Boquillas Canyon @BigBendNPS resulting from basin and range extension. Read about Kellen's adventures in our latest TG article.  Please follow the detour around the lava. Photo by Gary Lewis. See link in bio.
 Kellie Wall making friends with the massive “plagiotastic” #andesite columns capping the ridge above Lost Lake in the #GoatRocks #ancient #volcano, #Washington #womeninscience @oregonstate @osu.ceoas  Ancient lava levees on Isla de Socorro. This channel was once a ranging torrent of lava running down the side of the volcanic island off the coast of Mexico. Photo by @cuacochi. Follow link in profile and read more about Pep's adventure.  Climbing to the top of a megacrystic granite in SW Ghana with Helen McFarlane.  Coastal outcrop of the Oecusse Volcanics pillow basalts from #TimorLeste by @jkmlee Pillow basalt forms as basaltic lava erupts underwater. Lobes of basalt extrude and cool very quickly and another lobe punches out and cools. The top of the entire ocean floor is made of pillow basalt just like this stuff and it is only in specific circumstances when it comes to the surface by tectonic forces.  Large Ammonite fossil in the middle of a backcountry trail from @BigBendNPS Read more about it on the link in the profile.  The green sand beach sourced from the dissected seaside cinder cone of Hawaii. Wanna come to Hawaii with a geologist? See for a field trip of a lifetime.

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