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Dox Formation
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The Dox Formation, also known as the Dox Sandstone, is a Mesoproterozoic rock formation that outcrops in the eastern Grand Canyon, Coconino County, Arizona. The Dox Formation comprises the bulk of the
Dox Formation at Tanner Graben-(photo left, on river) and upstream on Colorado River (from Comanche Point, East Rim)
Dox Formation at Tanner Graben-(photo left, on river) and upstream on Colorado River (from Comanche Point, East Rim)
Purple colored, layered Dox Formation, below black Cardenas Basalt. (shows the ~15 degree dip)
Purple colored, layered Dox Formation, below black Cardenas Basalt. (shows the ~15 degree dip)
Basalt Creek cut into the Dox Formation. (At left-(northwest), entering the Colorado River at a small 'deltaic' region-(alluvial fan).)
Basalt Creek cut into the Dox Formation. (At left-(northwest), entering the Colorado River at a small 'deltaic' region-(alluvial fan).)
Close-up view of Dox Formation at Basalt Creek, just downstream of Tanner Graben, Tanner Rapid, and Tanner Creek
Close-up view of Dox Formation at Basalt Creek, just downstream of Tanner Graben, Tanner Rapid, and Tanner Creek
Bass Formation
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The Bass Formation, also known as the Bass Limestone, is a Mesoproterozoic rock formation that outcrops in the eastern Grand Canyon, Coconino County, Arizona. The Bass Formation erodes as either cliff
Dox Formation
…subdivision of the Grand Canyon Supergroup. The Unkar Group is about 1,600 to 2,200 m (5,200 to 7,200 ft) thick and composed of, in ascending order, the Bass Formation, Hakatai Shale, Shinumo Quartzite, Dox Formation, and Cardenas Basalt. The Unkar Group is overlain in ascending order by the Nankoweap Formation, about…
Stromatolites in Bass Limestone, Grand Canyon
Stromatolites in Bass Limestone, Grand Canyon
Bass Formation (multiple & thinly layered) below colorful Hakatai Shale-(orange), sitting on Granite Gorge-(Upper Inner Gorge, the blackish Vishnu Bas
Bass Formation (multiple & thinly layered) below colorful Hakatai Shale-(orange), sitting on Granite Gorge-(Upper Inner Gorge, the blackish Vishnu Basement Rocks). Cheops Pyramid (prominence), Grand Canyon (Isis Temple region, Bright Angel Canyon)
Close-up showing a light rock color, but the multiple layers of bedding in the Bass Formation.
Close-up showing a light rock color, but the multiple layers of bedding in the Bass Formation.
From Komo Point / Komo Point Trail, a few sections near Granite Gorge of black Vishnu Basement Rocks and a section of the layered Bass Limestone (note
From Komo Point / Komo Point Trail, a few sections near Granite Gorge of black Vishnu Basement Rocks and a section of the layered Bass Limestone (note horizontal layering & dk blackish-brown color) – visible below the cliffs of Tapeats Sandstone. (high resolution expandable photo)