Tag Archive for: GIS


Efforts to explain what GIS actually is almost invariably wax philosophical. At its most essential, GIS is a system for marrying data sets with geography. But it can better be understood as the product of a specific historic moment whose fruit is just coming to bear – a moment arising from the spontaneous amalgam of diverse technologies reaching their apparent apotheosis. And it began when a young Roger Tomlinson—and others—wanted to geographically assess more information than ever before. While the rise of digital culture has served to erode countless boundaries in traditional disciplines, that corrosion partially began in an airplane in 1962 with the predicament of getting gobs of information into one little map.


By: Janice M. Hayden

The Yellowjacket Canyon 7.5′ quadrangle is divided north-south by the Sevier fault zone with the lower Navajo Sandstone and older rocks creating the Vermilion Cliffs step of the Grand Staircase on the up-thrown block to the east, and the upper Navajo Sandstone and younger rocks creating the White Cliffs step of the Grand Staircase on the down-dropped block to the west. Exposed strata range from the Triassic Petrified Forest Member of the Chinle Formation to the Jurassic Co-op Creek Limestone Member of the Carmel Formation. Eoloian sand dunes, including those of Coral Pink Sand Dunes State Park, stretch northeast to southwest across the map area.

This CD contains geographic information system (GIS) files in ESRI file geodatabase and shapefile formats. Also included are two plates-the geologic map at 1:24,000 and the explanation sheet-both in PDF format. The latest version of Adobe Reader is required to view the PDF files. Specialized GIS software is required to use the GIS files.

M-256DM……….. $24.95




ofr-549Interim Geologic Map of the Seep Ridge 30′ x 60′ Quadrangle, Uintah, Duchesne, and Carbon Counties, Utah, and Garfield and Rio Blanco Counties, Colorado
Douglas A. Sprinkel

Web only- 3 pl., 1:100,000, contains GIS data (supercedes OFR-507)