Thursday, December 26, 2013

Digital geologic map of Tonto National Monument released by Park Service

Our friend Bruce Heise with the National Park Service's Geologic Resources Inventory (GRI) Team sent us a Christmas present today, announcing the completion and availability of digital geologic map coverage for Tonto National Monument (TONT).   Bruce provided the following details:

Providing parks with digital geologic maps meets the geologic inventory goal defined and funded by the NPS Inventory and Monitoring Program.  This map includes a compiled 1:24,000 version and is provided in full GIS coverage which can be found at:

GRI Digital Geologic Map of Tonto National Monument and Vicinity, Arizona (GRI MapCode TONT)

Also included is a surficial geologic map:

GRI Digital Surficial Geologic Map of Tonto National Monument and Vicinity, Arizona (GRI MapCode TSUR)

Both of these maps are also linked to the GRI TONT IRMA project record,

The source data used is listed below. More detailed information on source maps can be found in the abstract and metadata sites at the above listed URLs.  The GIS data is in the NPS  2.1 geodatabase data model, and is available in ESRI 10.0 file geodatabase and ESRI 10.0 shapefile format data is available upon request.  Both maps are also available as a Google Earth product [above].

With the completion of TONT, all 76 parks in the NPS Intermountain Region (and 11 parks in the Sonoran Desert Network) have received a digital geologic map and GIS product through the GRI.  In addition to the digital geologic maps, the GRI program also produces geologic reports that tie the digital geologic map to the geologic features, issues, and processes relevant to geologic resource management.  The report for TONT is forthcoming. 

These GIS products are the result of close collaboration between the Geologic Resources Division GRI team and Research Associates at the Colorado State University.  We want to extend a special thanks to staff at the Arizona Geological Survey for their assistance. CSU GRI team member Jim Chappell managed and finalized this product, with assistance from Ron Karpilo, Stephanie O’Meara, Derek Witt, Kari Lanphier, Rachel Yoder, and James Winter. 

Spencer, J.E., Richard, S.M., Ferguson, C.A., and Gilbert, W.G., 1999, Preliminary Bedrock Geologic Map and Cross Sections of the Windy Hill 7.5' Quadrangle, Gila County, Arizona, Arizona Geological Survey, Open-File Report OFR 99-12, 1:24,000 scale. (GRI Source Map ID 74430).

Spencer, J.E., and Richard, S.M., 1999, Geologic Map and Report for the Theodore Roosevelt Dam Area, Gila and Maricopa Counties, Arizona, Arizona Geological Survey, Open-File Report OFR 99-06, 1:24,000 scale. (GRI Source Map ID 7493).

Anderson, L.W., Piety, L.A., and LaForge, R.C., 1987, Seismotectonic Investigation, Theodore Roosevelt Dam, Salt River Project (Plate 1, Surficial Geologic Map of the Tonto Basin), Arizona, U.S. Bureau of Reclamation, Seismotectonic Report No. 87-5, 1:48,000 scale. (GRI Source Map ID 39467).

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