Surficial Geology of the Wittmann 7.5' Quadrangle, Northern Maricopa County, Arizona v. 2.0
| dc.contributor.author | Huckleberry, Gary | |
| dc.date.accessioned | 2025-09-23T20:58:34Z | |
| dc.date.available | 2025-09-23T20:58:34Z | |
| dc.date.issued | 2024 | |
| dc.identifier.citation | Huckleberry, G., 2024, Surficial Geology of the Wittmann 7.5' Quadrangle, Northern Maricopa County, Arizona v. 2.0, DGM-274 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10150/678591 | |
| dc.description | Most of southern and western Arizona lie within the Basin and Range physiographic province, a region characterized by broad valleys and linear mountain ranges. The valleys are deeply filled with alluvium that has eroded from adjacent mountains during the last 10 My. This aggradation has been driven by tectonism and climate change, although regional tectonic stability within the last 5 My suggests that climate change is the more recent dominant driving force (Morrison, 1985). Climatic fluctuations between relatively wet and dry conditions have resulted in pulses of aggradation producing a mosaic of different aged alluvial deposits in piedmont areas. Urban development on piedmonts, especially in the Phoenix Basin, has created a need to better understand the distribution and nature of these deposits. Surficial geologic maps characterize and distinguish different piedmont deposits on the basis of age and genesis. Such information provides baseline data for evaluating geologic hazards potential (e.g., Pearthree, 1991), locating possible source areas for industrial minerals (e.g., Wellendorf et aI., 1986), and determining locations favorable for groundwater recharge (e.g., Huckleberry, 1994). Moreover, these maps are also useful for assessing the potential for buried cultural resources and providing insight into local geologic history and landscape evolution. This report presents the results of surficial geologic mapping in the Wittmann and Hieroglyphic Mountains SW 7.5' quadrangles located northwest of metropolitan Phoenix (Figure 1). The project area includes segments of U.S. Highway 60, State Route 79, and the Central Arizona Project Canal, and is contiguous to the south with the White Tanks Mountain piedmont area previously mapped by Field and Pearthree (1991). (24 pages; 2 map sheets, map scale 1:24,000). This geodatabase is part of a digital republication of a 1994 geologic map originally created by the Arizona Geological Survey with financial support from the U.S. Geological Survey. Preparation for republication was conducted by students from the University of Arizona with financial support from the U.S. Geological Survey, National Geological and Geophysical Data Preservation Program (G23AP00215) and included the production of a new GIS geodatabase and a revised map layout. It is based on interpretations that were made from the data available at the time it was created. The AZGS does not guarantee this map or digital data to be free of errors nor assume liability for interpretations made from this map or digital data, or decisions based thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Arizona Geological Survey (Tucson, AZ) | en_US |
| dc.relation.ispartofseries | DGM-274 | en_US |
| dc.relation.url | https://library.azgs.arizona.edu/ | en_US |
| dc.rights | Arizona Geological Survey. All rights reserved. | en_US |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en_US |
| dc.subject | Hieroglyphic Mountains | en_US |
| dc.subject | Phoenix Basin | en_US |
| dc.subject | Central Arizona Project | en_US |
| dc.title | Surficial Geology of the Wittmann 7.5' Quadrangle, Northern Maricopa County, Arizona v. 2.0 | en_US |
| dc.contributor.department | Arizona Geological Survey | en_US |
| csdgm.bounding.west | -112.625 | en_US |
| csdgm.bounding.east | -112.5 | en_US |
| csdgm.bounding.north | 33.875 | en_US |
| csdgm.bounding.south | 33.75 | en_US |
| dc.description.collectioninformation | Documents in the AZGS Documents 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 azgs-info@email.arizona.edu. | en_US |
| refterms.dateFOA | 2025-09-23T20:58:35Z |
