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The Grand Canyon in the United States showcases a variety of Paleozoic rock units spanning over 500 million years of Earth's history. From the Moenkopi Formation to the Tapeats Sandstone, these layers reveal a rich geological history marked by key formations like the Redwall Limestone and Bright Angel Shale, separated by the Great Unconformity. Understanding these layers provides insights into the Earth's ancient environments and processes.
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Grand Cayon – Paleozoic Units 1 2 3 4 5 6 7 8 Great Unconformity 9 10 11 12
Key 1 Moenkopi Fm. 2 Kaibab Fm. 3 Toroweap Fm. 4 Coconino Sandstone 5 Hermit Shale 6 Supai Group 7 Surprise Canyon Fm. 8 Redwall Limestone 9 Temple Butte Limestone 10 Muav Limestone 11 Bright Angel Shale 12 Tapeats Sandstone
⠼1 ⠠⠛⠗⠯⠀⠠⠉⠁⠝⠽⠕⠝⠀⠠⠤⠀ ⠠⠏⠁⠇⠑⠕⠵⠕⠊⠉⠀⠠⠥⠝⠊⠞⠎ ⠼3 ⠼2 ⠼4 ⠼5 ⠼6 ⠠⠛⠗⠞⠀ ⠠⠥⠝⠉⠕⠝⠤ ⠿⠍⠰⠽ ⠼ 9 ⠼8 ⠼7 ⠼ 10 ⠼ 11 ⠼ 12
⠠⠅⠑⠽ ⠼⠁ ⠠⠍⠕⠢⠅⠕⠏⠊⠀⠠⠋⠍⠲ ⠼2 ⠠⠅⠁⠊⠃⠁⠃⠀⠠⠋⠍⠲ ⠼3 ⠠⠞⠕⠗⠪⠂⠏⠀⠠⠋⠍⠲ ⠼4 ⠠⠉⠕⠉⠕⠝⠔⠕⠀⠠⠎⠯⠌⠐⠕ ⠼5 ⠠⠓⠻⠍⠊⠞⠀⠠⠩⠁⠇⠑ ⠼6 ⠠⠎⠥⠏⠁⠊⠀⠠⠛⠗⠳⠏ ⠼7 ⠠⠎⠥⠗⠏⠗⠊⠎⠑⠀⠠⠉⠁⠝⠽⠕⠝⠀⠠⠋⠍⠲ ⠼8 ⠠⠗⠫⠺⠁⠇⠇⠀⠠⠇⠊⠍⠑⠌⠐⠕ ⠼9 ⠠⠞⠑⠍⠏⠇⠑⠀⠠⠃⠥⠞⠞⠑⠀⠠⠇⠊⠍⠑⠌⠐⠕ ⠼10 ⠠⠍⠥⠁⠧⠀⠠⠇⠊⠍⠑⠌⠐⠕ ⠼11 ⠠⠃⠐⠗⠀⠠⠁⠝⠛⠑⠇⠀⠠⠩⠁⠇⠑⠀ ⠼12 ⠠⠞⠁⠏⠂⠞⠎⠀⠠⠎⠯⠌⠐⠕