| Abstract: | Gravity and magnetic surveys were performed in the northeast portion of the Santa Rita Experimental Range, in southeastern Arizona, to identify faults and gain a better understanding of the subsurface geology. A total of 234 gravity stations were established, and numerous magnetic data were collected with portable and truck-mounted
proton precession magnetometers. In addition, one line of very low frequency electromagnetic data was collected together with magnetic data.
Gravity anomalies are used to identify two normal faults that project northward toward a previously identified fault. The gravity data also confirm the location of a second previously interpreted normal fault. Interpretation of magnetic anomaly data indicates the presence of a higher-susceptibility sedimentary unit located beneath lowersusceptibility surficial sediments. Magnetic anomaly data identify a 1-km-wide negative anomaly east of these faults caused by an unknown source and reveal the high variability of susceptibility in the Tertiary intrusive rocks in the area. |
| Genre: | USGS Numbered Series |
| ProdID: | 31572 |
| Citation Author: | Hegmann, Mary |
| Citation Contributing Office: | USGS Western Mineral Resources |
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| Citation Language: | ENGLISH |
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| Citation No Pagination: | N |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Report: 108 p.; GIS Files |
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| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2001-503 |
| Citation Search Results Text: | Gravity and Magnetic Surveys Over the Santa Rita Fault System, Southeastern Arizona; 2001; OFR; 2001-503; Hegmann, Mary |
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| Citation Year: | 2001 |
| Type: | citation/reference |
| Text: | Gravity and Magnetic Surveys Over the Santa Rita Fault System, Southeastern Arizona; 2001; OFR; 2001-503; Hegmann, Mary |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2001/of01-503/ |
| Date Other: | Mon, 1 Apr 2002 00:00 -0600 |
| Publisher: | Geological Survey (U.S.) |
