U.S. Geological Survey Data Series 199

Version 1.0
Online only
Published 2006

Digital Geologic Map and GIS Database of Venezuela

By Christopher P. Garrity,1 Paul C. Hackley,1 and Franco Urbani2

1U.S. Geological Survey, Reston, VA 20192.
2Escuela Geología, Minas y Geofísica, Universidad Central de Venezuela and Fundación Venezolana de Investigaciones Sismológicas, Caracas, Venezuela.

Abstract

The digital geologic map and GIS database of Venezuela captures GIS compatible geologic and hydrologic data from the "Geologic Shaded Relief Map of Venezuela," which was released online as U.S. Geological Survey Open-File Report 2005-1038. Digital datasets and corresponding metadata files are stored in ESRI geodatabase format; accessible via ArcGIS 9.X. Feature classes in the geodatabase include geologic unit polygons, open water polygons, coincident geologic unit linework (contacts, faults, etc.) and non-coincident geologic unit linework (folds, drainage networks, etc.). Geologic unit polygon data were attributed for age, name, and lithologic type following the Léxico Estratigráfico de Venezuela. All digital datasets were captured from source data at 1:750,000. Although users may view and analyze data at varying scales, the authors make no guarantee as to the accuracy of the data at scales larger than 1:750,000.

Block diagram showing tepuis near Cerro Ichún, southeastern Venezuela

Block diagram showing tepuis near Cerro Ichún, southeastern Venezuela. These geologic entities are the eroded remains of a quartz sandstone plateau that once covered this area of the Guayana Shield.

Data Files

Please refer to the README file for detailed information on installing this digital data set.
Digital data (ArcGIS geodatabase 9.X format) and associated metadata files [45.2-MB ZIP file].

Scientific Contact

For questions concerning the content of this report, please contact Christopher P. Garrity.

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