##### 

##### U.S. Geological Survey   Geologic Investigations Series I-2780

## Geologic Map of the San Carlos Indian Reservation, Arizona

#### *By* Chester T. Wrucke, Calvin S. Bromfield, Frank S. Simons, Robert C. Greene, Brenda B. Houser, Robert J. Miller, and Floyd Gray

#### 2004

#### Prepared in cooperation with theSan Carlos Apache Tribe and U.S. Bureau of Indian Affairs

| This map is a result of a study of the geology and mineral resource potential of the San Carlos Indian Reservation (Reservation) for the San Carlos Apache Tribe. The map provides new information on the geology of an area that contains the boundary between the Basin and Range Province on the south and the mountainous terrain that, in this part of Arizona, borders the southern structural margin of the Colorado Plateaus Province (herein referred to as the Colorado Plateau) on the north. In particular the map shows the great variety of Tertiary volcanic and sedimentary rocks typical of the northern part of the Basin and Range Province in east-central Arizona and the structural complications resulting from Cenozoic extension. Geology depicted in this map may aid in the interpretation of mineral resources between the copper mining areas of the Globe-Miami district to the west of the Reservation and the Morenci district to the east. |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

 

 

| **File         Name** | ****File         Type and Description****File         Size**FILES for VIEWING and PLOTTING******i2780_pamphlet.pdfPDF file of the 29-page descriptive geologic pamphlet that accompanies the map456 KB i2780_sheet_1.pdfPDF file of 49" x 39" map sheet 1 (geologic map) that can be used for viewing map in a browser, as well as for plotting16.3 MBi2780_sheet_2.pdfPDF file of 35" x 37" map sheet 2 (Correlation of Map Units, Description of Map Units, table of isotopic ages, table of chemical analyses)240 KB**README**i2780_readme.txtText-only readme file that explains the contents of the data files (coming soon)64 KB**DATA**i2780_data.zipData files19.3-MB compressed; 42.8 MB expanded
For questions about the content of this report, contact Chet Wrucke

Version history
This report is also available in print:

U.S. Geological Survey, Information Services  Box 25286, Federal Center  Denver, CO 80225  Telephone: 1–888–ASK–USGS (1–888–275–8747)  E-mail: infoservices@usgs.gov
Download a copy of the latest version of Adobe Reader for free.

| Help   | PDF help   | Publications main page | | Western Geologic and Miscellaneous Investigation Series Maps ||   Geologic Division | Western Mineral   Resources Program || Department of the Interior | U.S. Geological Survey | Privacy Statement | Disclaimer | Accessibility | URL of this page: https://pubs.usgs.gov/imap/i2780/Maintained by: Michael DigglesCreated: November 5, 2004Last modified: December 2, 2005 (mfd)******** |
|------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|