unconformity – Irreverent Outcrop https://irreverentoutcrop.com Travel stories with mild geo-flavor Sun, 05 Jan 2025 05:44:56 +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 unconformity – Irreverent Outcrop https://irreverentoutcrop.com 32 32 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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