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Geological Surveys Database

Geological Surveys Database

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1999, Arizona Geological Survey
This field trip focuses on subsidence features caused by removal of groundwater at rates greater than natural recharge in the Picacho basin. Land subsidence is common in Arizona's alluvial basins, where extensive groundwater withdrawal has lowered water tables by as much as six hundred feet....
1999, Arizona Geological Survey
The Copper Mountain quadrangle is centered just north of the southwest-facing escarpment on the southwest side of the crest of the Sierra Ancha (see Figure 1). Elevations range from about 4200 feet in the southwest corner of the map to 6676 feet at Copper Mountain. The lower elevations in the...
1999, Arizona Geological Survey
The Picture Mountain quadrangle is centered on the southwest flank of the Sierra Ancha (see Figure 1). The geology of the area is dominated by the middle Proterozoic Apache Group and the diabase that intrudes it, and some extensive middle Tertiary conglomerates. Elevations range from about 2800...
1999, Arizona Geological Survey
This report and accompanying maps describe the surficial geology, geomorphology, and geologic hazards around the Tucson Mountains, on the western margin of the Tucson metropolitan area. The mapping covers the Avra, Brown Mountain, Cat Mountain, and Jaynes 7 1/2' quadrangles and includes part...
1999, Arizona Geological Survey
This report and accompanying maps describe the surficial geology, geomorphology, and geologic hazards of the northern Tucson metropolitan area. The mapping covers the Tucson North and Sabino Canyon 7 1/2' quadrangles and includes portions of the City of Tucson and unincorporated Pima County (...
1999, Arizona Geological Survey
The purpose of this project is to integrate new detailed field mapping, aerial photograph interpretation, previous research, and other available data into 1:24,000 scale geologic and geomorphic maps of the San Bernardino Valley study area (Map Pocket). Our goal is to describe the fundamental...
1999, Arizona Geological Survey
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated about half way between the towns of Florence and Catalina, and are about 70 km (45 mi.) north of Tucson (see figure 1). The low spine of hills is underlain by at least four separate granitic plutons...
1999, Arizona Geological Survey
The Picacho Mountains are north-south trending mountain range completely surrounded by Quaternary alluvium, and consists of Tertiary and older granitic and gneissic rocks (Figure 1). Picacho Peak, located south of the south end of the range, is also surrounded by alluvium, and consists of Tertiary...
1999, Arizona Geological Survey
The Samaniego Hills are a low series of hills composed of flat-lying to gently dipping early Miocene and possibly late Oligocene lava flows interbedded with thin units of volcaniclastic and locally non-volcaniclastic sandstone and conglomerate. The preserved sequence is approximately 600 meters...
1999, Arizona Geological Survey
The Sawtooth Mountains are a small (45 km<sup>2</sup>), low-relief (250 m), yet rugged range composed of essentially flat-lying, Mid-Tertiary volcanic rocks. Along with the West Silver Bell Mountains, which consist mostly of Middle Proterozoic granitic rocks, the ranges form the...
1999, Arizona Geological Survey
The Horseshoe Dam quadrangle straddles part of the lower Verde River valley of central Arizona, a north-trending, west-tilted half-graben along the southern edge of the Transition Zone tectonic province (Spencer and Reynolds, 1989). The graben is filled with Miocene sedimentary and volcanic rocks....
1999, Arizona Geological Survey
This report provides baseline information on the physical characteristics of the Santa Cruz River to be used by the Arizona Stream Navigability Commission in its determination of the potential navigability of the Santa Cruz River at the time of Statehood. The primary goals of this report are: (1)...
1999, Arizona Geological Survey
Windy Hill quadrangle is located in SE part of Tonto Basin and includes bedrock on both sides of the Basin. Bedrock geology is dominated by Middle Proterozoic Apache Group and by overlying lower Paleozoic sandstone and carbonate rocks.
1999, Arizona Geological Survey
This report is a brief summary of the geology and mineral resources of the Tonto Basin, prepared in conjunction with a mineral potential report for a proposed land withdrawal in the Theodore Roosevelt Lake area, requested by the Bureau of Reclamation (Federal Register, v.62, No. 232, p63957, Dec. 3...
1999, Arizona Geological Survey
We have completed initial paleoseismologic investigations to evaluate the recency and size of paleoearthquakes and long-term slip rates on the Hurricane fault in southern Utah and northern Arizona (SUNA). The Hurricane fault is a long, west-dipping normal fault with substantial late Cenozoic...
1999, Arizona Geological Survey
The Theodore Roosevelt Dam area is located approximately 90 km east of Phoenix on the southwest flank of Tonto Basin (Figure 1). The map area encompasses the southeastern end of the Mazatzal Mountains and the northern Two Bar Ridge area at the northeastern end of the Superstition Mountains. The...
1999, Arizona Geological Survey
Three wells drilled in the Tonto Basin have been studied to assist in the interpretation of subsurface geology of the basin. These are the Forest Service Windy Hill Test #1, drilled in 1991, the Sanchez O'Brien Federal 1-4, drilled in 1983, and the Kerber 1 Federal, drilled in 1969. Locations...
1999, Arizona Geological Survey
The U-Pb data described in this report were produced to determine the ages of granitic rocks in Arizona and the timing of metamorphic and deformational events. Two developments emerge from the data reported here that are especially significant. Two granites, one from the Mazatzal Mountains east of...

About the Geological Surveys Database
https://statesurveys.americangeosciences.org

As of July 2018, the Geological Surveys Database replaces the Critical Issues Research Database, providing an improved portal for decision makers and others to locate and comprehensively search state geological survey publications and U.S. Geological Survey factsheets.

The Geological Surveys Database provides full-text searching of publications meaning that users can not only search metadata fields (i.e., title, author, notes, etc.), but also search against the entire text of the publications in the database in order to find the information they are seeking. The database also features interactive geographic searching of publications that have geographic coordinates, browsing of publications, faceted searching, and more.

Record display views include robust metadata that is based on a combination of GeoRef metadata that is supplemented with additional metadata from the state geological surveys and U.S. Geological Survey, links to state geological survey websites, suggestions for similar items, and a map display of associated geographic metadata coordinates.

The Geological Surveys Database also provides a wide array of user features including the ability to export citations, create user accounts to save queries, citations and create curated lists, add comments and custom tags to records in the database, and more.

The Geological Surveys Database is a collaborative effort between the American Geosciences Institute and U.S. state geological surveys to help increase the discoverability and use of geological survey publications by decision makers as they address issues at the intersection of the geosciences and society.