Hakatai Shale
The Hakatai Shale is a Mesoproterozoic rock formation that outcrops in the Grand Canyon, Coconino County, Arizona. It consists of colorful strata that exhibit colors that vary from purple to red to brilliant orange on outcrop. The colors are the result of the oxidation of iron-bearing minerals in the Hakatai Shale. It consists of lower and middle members that consist of bright-red, slope-forming, highly fractured, argillaceous mudstones and shale and an upper member composed of purple and red, cliff-forming, medium-grained sandstone. Its thickness, which apparently increases eastwards, varies form 137 to 300 m (449 to 984 ft). In general, the Hakatai Shale and associated strata of the Unkar Group rocks dip northeast (10°-30°) toward normal faults that dip 60° or more toward the southwest.
Hakatai Shale
The Hakatai Shale is a Mesoproterozoic rock formation that outcrops in the Grand Canyon, Coconino County, Arizona. It consists of colorful strata that exhibit colors that vary from purple to red to brilliant orange on outcrop. The colors are the result of the oxidation of iron-bearing minerals in the Hakatai Shale. It consists of lower and middle members that consist of bright-red, slope-forming, highly fractured, argillaceous mudstones and shale and an upper member composed of purple and red, cliff-forming, medium-grained sandstone. Its thickness, which apparently increases eastwards, varies form 137 to 300 m (449 to 984 ft). In general, the Hakatai Shale and associated strata of the Unkar Group rocks dip northeast (10°-30°) toward normal faults that dip 60° or more toward the southwest.
has abstract
The Hakatai Shale is a Mesopro ...... omprise Vishnu Basement Rocks.
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Link from a Wikipage to an external page
Wikipage page ID
37,284,146
Wikipage revision ID
729,666,054
age
Meso-Proterozoic, 1,200±50 Ma?
Caption
Three approximate equal-thickn ...... north perimeter, Granite Gorge
Unkar Group, Shinumo Quartzite ...... ai Shale, upon Bass Formation.
country
imagesize
namedfor
Hakatai Canyon
otherlithology
siltstone, sandy siltstone, and sandstone
period
Mesoproterozoic
region
Arizona, Grand Canyon
Isis Temple region, southwest ...... orge, and along Colorado River
Thickness
approximate maximum
subject
hypernym
type
comment
The Hakatai Shale is a Mesopro ...... or more toward the southwest.
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label
Hakatai Shale
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