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Geologic map of the St. George 7.5' quadrangle, Washington County, Utah

Geologic map of the St. George 7.5' quadrangle, Washington County, Utah
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SKU M-251 DVD
Weight 1.20 lbs
 
Our price: $24.95
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By: J. M. Hayden and G. C. Willis

The St. George 7.5' quadrangle extends from the Red Hills north of St. George city south across the rugged Bloomington dome to the hummocky White HIlls at the south edge of the quadrangle. Colorful red, orange, white, and gray strata from the Permian Kaibab Formation to the Jurassic Navajo Sandstone have been compresssed into a broad, poorly defined, northeast-trending St. George syncline and the much tighter Virgin anticline. The potentially active Washington and St. George faults offset strata 400 to 750 feet. Other small faults near folds generally developed in pairs, forming grabens. Four Quaternary basalt flows, which followed stream drainages from vents north of the quadrangle, now form black ridges (inverted valleys) that frame the brightly colored sedimentary rock. Recent incision by the Virgin and Santa Clara RIvers and their tributaries exposed the multi-colored strata and created several major gravel terraces.

This DVD contains GIS files in ESRI file geodatabase and shapefile formats. Also included in PDF format are two plates - a geologic map at 1:24,000 scale with an explanation plate, and a 20-page booklet describing the geology of the quadrangle.

Other Information:
Published: 2011
Pages: 20 p.
Plates: 2 pl.
Scale: 1:24,000
Location: Washington County
Contains GIS Files
Media Type: DVD Map

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