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Geologic map of the White Hills quadrangle, Washington County, Utah

Geologic map of the White Hills quadrangle, Washington County, Utah
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SKU M-250 CD
Weight 0.25 lbs
 
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By: J. M. Hayden

The White Hills 7.5' quadrangle extends from the cities of St. George and Santa Clara south and southwest across the rugged White Hills to the upper part of the deep Virgin River Gorge. Colorful white, gray, red, and orange strata from the Permian Toroweap Formation to the Jurassic Moenave Formation dip northeast on the west flank of the broad St. George syncline. A spectacular unconformity with almost 400 feet of paleotopographic relief caused by a worldwide sea-level drop is exceptionally well exposed at the Permian/Triassic contact. Strata are locally faulted and folded into small anticlines and synclines by dissoluation of gypsum beds, and contain many breccia pipes and linear collapse structures. Recent incision by the Virgin and Santa Clara Rivers and their tributaries exposed the multi-colored strata and created several major gravel terraces.

This CD contains GIS files in ESRI file geodatabase and shapefile formats. Also included in PDF format are an 11-page booklet describing the geology and two plates, a geologic map at 1:24,000 scale, and an explanation plate.

Other Information:
Published: 2011
Pages: 11 p.
Plates: 2 pl.
Scale: 1:24,000
Location: Washington County
Contains GIS Files
Media Type: CD-ROM Map

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