Supai Group
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The Supai Group is a slope-forming sequence of mixed red beds and limestones that outcrop in the Colorado Plateau. The group was laid down during the Pennsylvanian to Lower Permian. Cliff-forming inte
Paleozoic Supai Group, underlying Surprise Canyon Formation, and top of Redwall Limestone in the eastern Grand Canyon at Twentythree Mile rapid.
Red beds of Supai Group
Entire Supai Group, Isis Temple, Grand Canyon
Hermit Formation
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The Permian Hermit Formation, also known as the Hermit Shale, is a nonresistant unit that is composed of slope-forming reddish brown siltstone, mudstone, and very fine-grained sandstone. Within the Gr
Supai Group
…sandstone beds to the Coconino Sandstone. In 1922, Noble separated the uppermost fine-grained, slope-forming strata of the original Supai Group into the Hermit Shale, based on the disconformity between the two. Noble also established the lower boundary of the Supai Group based on a noticeable disconformity separating…
(Isis Temple, central Grand Canyon) The 3 top geologic units visible: 3)-(white-cliffs-prominence)-Coconino Sandstone, 2)-(slope-forming-Deep brnsh-red)-Hermit Formation, 1)-(red-uppermost-vertical-cliff & resistant)-Esplanade Sandstone (top unit of 4–member Supai Group) (Note: Distinctive Redwall Limestone upper horizontal-platform.)