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Research about Coconino County, Yavapai County, Arizona

Source-linked reports with geographic coverage including Coconino County, Yavapai County, Arizona.

11 recordsLinked to original sources
USGS2008

Geologic map of the Prescott National Forest and the headwaters of the Verde River, Yavapai and Coconino Counties, Arizona

This 1:100,000-scale digital geologic map details the complex Early Proterozoic metavolcanic and plutonic basement of north-central Arizona; shows the mildly deformed cover of Paleozoic rocks; reveals where Laramide to mid-Tertiary plutonic rocks associated with base- and precious-metals deposits are exposed; subdivides the Tertiary volcanic rocks according to chemically named units; and maps the Pliocene to Miocene fill of major basins. Associated digital files include more than 1,300 geochemical analyses of all rock units; 1,750 logs of water wells deeper than 300 feet; and interpreted logs of 300 wells that define the depth to basement in major basins. Geophysically interpreted buried features include normal faults defining previous unknown basins, mid-Tertiary intrusive rocks, and half-grabens within shallow bains.

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USGS2002

Hydrogeologic data for the Coconino Plateau and adjacent areas, Coconino and Yavapai counties, Arizona

Data on geology, topography, hydrology, climate, land use, and vegetation were compiled between October 2000 and September 2001 and assembled into a database for use by local and regional waterresource managers and for future water-resource investigations. The hydrologic data include information on wells, springs, streamflow, water chemistry, and water use. Limitations of the data and additional data needs also were prepared. The roughly 5,000-square-mile Coconino Plateau contains a complex regional aquifer that has become increasingly important as a source of water supply for domestic, municipal, and in-stream uses owing to population growth and development. The flow characteristics of the regional aquifer are poorly understood because the aquifer is deeply buried, which limits exploratory drilling and testing, and because the geologic structure, which controls the occurrence and movement of ground water, is complex. The study area is about 10,300 square miles and, besides containing the entire Coconino Plateau, includes parts of adjacent areas where ground water from the Coconino Plateau discharges. Selected data are presented in tabular or graphical form. All data are available in electronic form.

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USGS1999

An evaluation of sand and gravel resources in and near the Prescott National Forest in the Verde Valley, Arizona, with a section on evaluation of sand and gravel resources using selected engineering variables

This study was based on available published literature. Although no field investigation was conducted in the Prescott National Forest to the west of the Verde River, a field investigation was conducted in the summer of 1994 by this author on the Coconino National Forest, to the east of the Verde River, where units of surficial materials of the same age and similar character are found (Cox, 1995). The intent of this evaluation of sand and gravel resources in the Prescott National Forest and adjacent areas in the Verde Valley, is to provide the land managers of the U.S. Forest Service with a map that delineates sand- and gravel-bearing geologic units. The map distinguishes (1) sand-and gravel-bearing units that are limited to channels from those that are not, (2) sand-and gravel-bearing units that are thin (generally less than 40 feet thick which is one contour interval on the topographic maps) from those that are locally thick (generally 40 feet or more), (3) sand- and gravel-bearing units that are poorly sorted from those that are well-sorted4, (4) sand- and gravel-bearing units that have little or no soil development from those that have greater degrees of soil development and lithification, (5) and sand- and gravel-bearing units that support riparian vegetation from those that do not. These distinctive characteristics are related to the geologic age or depositional setting of the rock materials and can be distinguished where areas are mapped in detail.

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USGS1986

Aeromagnetic map of the Wet Beaver Roadless Area, Yavapai and Coconino counties, Arizona

The Wet Beaver Roadless Area includes 9,890 acres (15.4 mi2) of the Coconino National Forest and is in T. 15 N., Rs. 6, 7, and 8 E., Yavapai and Coconino Counties, central Arizona. Camp Verde, the nearest major population center, is about 13 mi southwest of the road less area. The area boundary closely follows the rim of the steep-walled canyon cut by Wet Beaver Creek into the gently westward sloping surface of the Colorado Plateau. The mouth of the canyon and the western boundary of the roadless area are near the Mogollon Rim, an escarpment that marks the southwestern margin of the Colorado Plateau. Here, the plateau surface falls off sharply in the Verde Valley, and Wet Beaver Creek flows 12 mi farther west where it joins the Verde River, the master stream of the region. The maximum elevation within the area, just east of Hog Hill, is 6,470 ft. The lowest point, at 4,000 ft, is the stream bed of Wet Beaver Creek near the western area boundary. Topographic relief within the area ranges from 1,200 ft near the mouth of the canyon at Casner Butte to about 150 ft at the eastern boundary. Perennial springs, located south of Hog Hill, discharge about 1,200-1,500 gallons of water per minute into Wet Beaver Creek (Twenter and Metzger, 1963, p. 94). The western boundary of the roadless area and the mouth of Wet Beaver Creek canyon are accessible by Forest Service roads from either Camp Verde or the Sedona interchange on Interstate Highway 17. Various points along the canyon rim and the area boundary can be reached by unimproved roads, jeep trails, and pack trails. The canyon floor is accessible only on foot; in several places, deep pools require a swim or steep climb and descent for traverse of the canyon.

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USGS1986

Aeromagnetic map of the Rattlesnake Roadless Area, Coconino and Yavapai counties, Arizona

The Rattlesnake Road less Area covers 32,870 acres between long 11°37'30" and long 111°47'30" W. and between lat 34°40' and lat 34°45' N., Coconino and Yavapai Counties, in central Arizona. Sedona and 0ak Creek, the nearest population centers, are located, respectively, at the northwest corner and along the west boundary of the roadless area. The Rattlesnake Roadless Area includes the deeply embayed Mogollon Rim margin of the Colorado Plateau Province and part of the Werde Walley. The Werde Walley is a deeply dissected lacustrine basin, one of several tectonic basins in the Arizona transition zone that separate the Basin and Range Province from the Colorado Plateau Province. Here the plateau surface falls off abruptly to the Werde Valley, drained by the Werde River, the master stream of the region. The highest point in the roadless area is 6,834 ft at the basalt cap at the north end of Munds Mountain. The lowest point, about 3,480 ft, is along Dry Beaver Creek, near the southwest corner of the roadless area. The maximum relief, more than 2,000 ft, occurs between the Munds-Lee Mountain divide and the valley floors of bordering Oak Creek and Jacks Canyon. The relief between floor and upper canyon rims along the steep-walled and narrow Woods Canyon ranges from 900 ft to more than 1,400 ft; the east side of the canyon has the highest walls. Canyon rims in the roadless area are accessible by several four-wheel-drive trails across the plateau surface from points along Schnebly Hill Road and Highway I-17. Access to Jacks Canyon is by road and four-wheel-drive trail to Jacks Canyon Tank, about 4 mi up the canyon from Highway 179. Access to the head of Jacks Canyon is by foot or horse along a well-maintained trail. Access to the bottom of Woods Canyon is by four-wheel-drive vehicle for about 2 mi from Highway 179 and then by pack trail for about 5 mi more.

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USGS1985

Geochemical map of the Wet Beaver Roadless Area, Coconino and Yavapai counties, Arizona

The geochemical survey of the Wet Beaver Roadless Area was conducted in May 1982 by the U.S. Geological Survey to aid in a mineral resource appraisal of the area. A total of 64 stream-sediment samples, 30 heavy-mineral concentrates from stream sediment, 7 rock samples, and 7 water samples was collected by S.C. Rose, D.E. Hendzel, and W.J. Gerstel, with helicopter support from Jack Ruby, pilot for Helicopters Unlimited.

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USGS1985

Geochemical map of the Rattlesnake Roadless Area, Coconino and Yavapai counties, Arizona

The geochemical survey of the Rattlesnake Roadless Area was conducted in May 1982 by the U.S. Geological Survey to aid in a mineral resource appraisal of the area. A total of 114 stream-sediment samples, 68 heavy-mineral concentrates from stream sediment, 20 rock samples, and 4 water samples was collected by S.C. Rose, D.E. Hendzel, and W.J. Gerstel, with helicopter support from Jack Ruby, pilot for Helicopters Unlimited. All sample localities are plotted on the map; sample localities showing anomalous barium and lead are also indicated on the map.

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USGS1983

Aeromagnetic map of the West Clear Creek roadless area, Coconino and Yavapai Counties, Arizona

The West Clear Creek Roadless Area lies within the Coconino National Forest in central Arizona (fig. 1) and includes parts of Yavapai and Coconino Counties. Camp Verde, the nearest population center, is approximately 7 miles (11 km) west of the area. West Clear Creek canyon begins on the east at the confluence of the incised gorges of Willow Valley and of Clover Creek and is joined toward the west by Black Mountain Canyon. The canyon of West Clear Creek is very rugged; in several places it is more than 1,900 ft (580 m) deep. Creek elevation ranges from 6,100 ft (1,860 m) near the junction with Clover Creek to 3,200 ft (975 m) at the mouth of the canyon. The elevation of peaks and ridges near the canyon range from 4,000 ft (1,220 m) to 7,000 ft (2,135 m). Uplands at the head of Willow Valley and Clover Creek reach elevations up to 7,100 ft (2,165 m) above sea level. The greater part of the surface is underlain by late Tertiary volcanic rocks, mainly alkali olivine basalts. These overlie Lower Per i an sedimentary rocks consisting mostly of dolomite, limestone, and sandstone strata that dip gently westward. Late Tertiary and Quaternary sedimentary rocks and deposits mantle several ridges (terrace gravels) and cover basalt flows in Verde Valley at the west end of the area (Verde Formation). Quaternary alluvial deposits occur in the main West Clear Creek drainage and its larger tributaries at the west end of the area.

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USGS1980

Maps showing ground-water conditions in the upper Verde River area, Yavapai and Coconino counties, Arizona-1978

The upper Verde River area includes about 3,600 square miles in north-central Arizona. The area is underlain by a regional aquifer that consists of several formations. In places ground water also is present in the igneous rocks and basalt flows and in the alluvium along the channels and flood plains of the streams. Ground-water development has been slight; in 1978 about 8,000 acre-feet of ground water was withdrawn for domestic, public-supply, industrial, and irrigation uses. Information on the maps includes the principal geologic formation that furnishes water to wells and springs, depth to water, altitude of the water level, and chemical quality of the water. Scale 1:125,000. (USGS)

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