Geology of the Cholla Tank and northern third of the Hoodoo Well quadrangles, northern Kofa Mountains, Yuma and La Paz Counties, Arizona
KeywordsArizona Geological Survey Open File Reports
Little Horn Mountains
Hoodoo Well quadrangle
La Paz County
Kofa National Wildlife Refuge
MetadataShow full item record
CitationSkotnicki, S.J. and Ferguson, C.A., 1996, Geology of the Cholla Tank and northern third of the Hoodoo Well quadrangles, northern Kofa Mountains, Yuma and La Paz Counties, Arizona. Arizona Geological Survey Open File Report, OFR-96-24, 1 map sheet, map scale 1:24,000, 14 p.
PublisherArizona Geological Survey (Tucson, AZ)
DescriptionThis study encompasses the western-most end of the Little Horn Mountains and the northeast end of the Kofa Mountains. Although relief in the area is less than 2000 feet, with elevations ranging from about 1500 feet in the northeast corner to 3348 feet at New Water (the peak west of Red Rock Pass), both ranges are extremely rugged. The physiography of the area is dominated by high basalt mesas flanked by steep-sided talus slopes. This is a very dry region in which saguaro, palo verde and ocotillo are abundant and separated by land largely devoid of low brush. Abundant older Quaternary surfaces (Late Pleistocene and older) and talus deposits mantling dark basalt mesas all contain abundant basalt clasts covered with dark desert varnish. This abundant varnish gives the area a very dark, charred appearance. Desert pavements are well-developed on older surfaces.
RightsArizona Geological Survey. All rights reserved.
Collection InformationDocuments in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact email@example.com.
North Bounding Coordinate33.5
South Bounding Coordinate33.345
West Bounding Coordinate-113.87
East Bounding Coordinate-113.75
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