Shale, above the bottom Unkar Group member, Bass Formation-(in other photos shown as a well-bedded, grayish, multi-layered member, sitting on Vishnu Basement Rocks, at the top of Middle Granite Gorge). The Shinumo Quartzite lies above the slope-forming unit of the Hakatai Shale, above Bass Formation. The two slope formers can be seen as reddish, yellowish, and purplish in photographs. From the south, three colorful slope-forming sections below the Shinumo Quartzite cliffs can be observed from a distance, one each below Isis Temple and Cheops Pyramid; a lower prominence has the third slope directly upon Granite Gorge, with the intersection of Bright Angel Creek/Canyon, located at the southeast section of the uplifted fault-block, that Isis Temple and Cheops Pyramid are part of. Tapeats Sea, Shinumo Quartzite, and Unkar Group Horst No Tapeats Sandstone was deposited upon the Shinumo Quartzite. In the Tapeats Sea, the marine transgression sequence of sandstone-(conglomerates)-shale-limestone found two 'mountain island' members, the Cardenas Basalt (sections), and the Shinumo Quartzite, as erosion resistant 'prominences'. Only the Bright Angel Shale and Muav Limestone were deposited above the 'mountain island' prominences; Tapeats Sandstone was deposited around the 'Shinumo Quartzite island' perimeter, and can be seen in Bright Angel Canyon, west and northwest, the Phantom Creek drainage, north, and in the Trinity Creek drainage down the west perimeter, and upstream. The Isis Temple-Cheops Pyramid is part of a localized fault-block, uplifted; (it also contains 3 sub-faults within it, parallel to the fault at its north border, Phantom Creek); the fault bordering the fault-block west, is down Trinity Creek; the fault east is the Bright Angel Fault, down Bright Angel Canyon, and on the south (South Rim side, 'south' of Middle Granite Gorge), through Garden Creek (canyon), of the Bright Angel Trail. The Unkar Group, which forms the base of Isis Temple, consists of the Shinumo Quartzite, Hakatai Shale, and Bass Formation in descending order. The Unkar Group lies upon the Vishnu Basement Rocks, which are exposed in Lower, Middle, and Upper Granite Gorge. The Unkar Group, and other subdivisions of the (Grand Canyon Supergroup), are tilted, about 15 degrees, as seen in photographs, or while viewing in Grand Canyon. List of geologic units of Isis Temple The following is the list of geologic units below the Isis Temple prominence (for 5-member Unkar Group fault–block, members 3 through 1): Coconino Sandstone, (prominence, Permian unit 3 of 5 in Grand Canyon) Hermit Shale, Permian