sedimentaryrock – Irreverent Outcrop https://irreverentoutcrop.com Travel stories with mild geo-flavor Mon, 30 Jun 2025 20:57:47 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.1 https://irreverentoutcrop.com/wp-content/uploads/2024/06/cropped-logo-temp-01-1-2-32x32.png sedimentaryrock – Irreverent Outcrop https://irreverentoutcrop.com 32 32 Devil’s Punchbowl: sandstone formations warped by San Andreas Fault https://irreverentoutcrop.com/devils-punchbowl/ https://irreverentoutcrop.com/devils-punchbowl/#respond Sun, 29 Jun 2025 08:54:59 +0000 https://irreverentoutcrop.com/?p=1292 Read more]]> North of Los Angeles lies a striking sandstone outcrop known as the Devil’s Punchbowl. I’d seen it before from the air— it’s right where the Transverse Ranges of Southern California give way to the Mojave Desert, directly adjacent to the San Andreas Fault. But it was not until this year that I finally had a chance to visit. The area’s sedimentation dates back to…

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]]> https://irreverentoutcrop.com/devils-punchbowl/feed/ 0 Flying over the northernmost mountains: Alaska’s Brooks Range and Gates of the Arctic National Park https://irreverentoutcrop.com/brooks-range-alaska/ https://irreverentoutcrop.com/brooks-range-alaska/#respond Wed, 26 Feb 2025 20:01:39 +0000 https://irreverentoutcrop.com/?p=1174 Read more]]> In the winter of 2023, we traveled to the northernmost mountain range of the North American continent—the Brooks Range. The heart of this range lies within Gates of the Arctic National Park in Alaska. On the day of departure, the temperature was still below freezing, but the sky was perfectly clear. We flew with Wright Air Service, departing from a small airstrip at Fairbanks…

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]]> https://irreverentoutcrop.com/brooks-range-alaska/feed/ 0 Time-traveling through 1.7 billion years of geology at the Grand Canyon https://irreverentoutcrop.com/geology-at-the-grand-canyon-en/ https://irreverentoutcrop.com/geology-at-the-grand-canyon-en/#respond Mon, 30 Dec 2024 11:59:11 +0000 https://irreverentoutcrop.com/?p=1020 Read more]]> We visited the Grand Canyon in Arizona this spring and hiked all the way to the bottom! Starting with the Kaibab Formation at the top, which formed around 270 million years ago during the Permian period, and moving down to the Vishnu Schist at the canyon floor, which formed 1.7 billion years ago during the Proterozoic Eon, we explored the entire geological timeline in reverse.

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]]> https://irreverentoutcrop.com/geology-at-the-grand-canyon-en/feed/ 0 Barringer Crater and Canyon Diablo Meteorite https://irreverentoutcrop.com/barringer-crater-and-canyon-diablo-meteorite/ https://irreverentoutcrop.com/barringer-crater-and-canyon-diablo-meteorite/#respond Sun, 25 Aug 2024 00:41:50 +0000 https://irreverentoutcrop.com/?p=844 Read more]]> When we were going back to Phoenix from the Grand Canyon, we turned east in Flagstaff and took a 45 minutes detour to visit the Barringer Meteor Crater (a.k.a. Meteor Crater Natural Landmark). This is the most well-preserved meteor crater in the world and the first confirmed impact crater on Earth caused by an extraterrestrial collision. The meteorite that created this crater 50,000…

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]]> https://irreverentoutcrop.com/barringer-crater-and-canyon-diablo-meteorite/feed/ 0 Iberian Peninsula – Gibraltar, Cadiz, and Geoparque Oeste https://irreverentoutcrop.com/iberian-peninsula-gibraltar-cadiz-and-geoparque-oeste/ https://irreverentoutcrop.com/iberian-peninsula-gibraltar-cadiz-and-geoparque-oeste/#comments Fri, 21 Jun 2024 01:28:38 +0000 https://irreverentoutcrop.com/?p=119 Read more]]> I visited southern coast of Spain, Gibraltar, and the coast on the Atlantic side of central Portugal (also known as the “Silver Coast”) in the spring of 2024. The scenery is beautiful and its sedimentary rock structure is particularly special. The Strait of Gibraltar separates Europe and Africa, with its narrowest point of only ~14km / 9miles wide. We lucked out with perfect…

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