Tag Archive for: geologic maps

usgs.gov

Celebrate the third annual Geologic Map Day! On October 17, as a part of the Earth Science Week 2014 activities, join leading geoscience organizations in promoting awareness of the importance of geologic mapping to society.

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By: Robert F. Biek, John J. Anderson, Edward G. Sable, and Peter D. Rowley

The Haycock Mountain quadrangle lies in the central part of the Markagunt Plateau in southwest Utah and includes the eastern part of Panguitch Lake, a popular area of summer and winter recreational use. Despite the plateau’s relatively simple structure of a gently east-tilted fault block, the quadrangle contains scenic and instructive exposures of south-west Utah’s youngest basaltic lava flows, classic examples of inverted valleys capped by older lava flows, and the southern margin of the Markagunt Megabreccia, including newly identified, exceptionally instructive exposures of its basil slip surface. The Megabreccia is the debris of Utah’s largest catastrophic landslide deposit, which covers 1300 square miles (3400 km²) of the northern and central Markagunt Plateau.

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blogs.scientificamerican.com

March 23, 1769 marks the birthday of pioneering stratigrapher William Smith, who is also credited with creating the first useful geological map, however like many other great accomplishments also Smith’s idea of depicting the distribution of rocks on a topographic map didn’t materialize out of nowhere.

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Two new geologic maps near Vernal, Utah have been released. The Utah Geological Survey (UGS) recently published two 1:24,000-scale geologic maps covering a part of the south flank of the Uinta Mountains near Vernal. These maps provide data useful to consultants/land-use managers to address geologic hazard and resource issues; they will also be of interest to educators and others simply interested in learning about the fascinating geology of the Vernal area.

“The Dry Fork and Steinaker quadrangles contain some of the most scenic and geologically diverse landscapes in the southern Uintas,” said Doug Sprinkel, UGS geologist. “These quadrangles reflect that diversity and provide basic geologic information for the popular Steinaker Reservoir, the Red Cloud Loop Drive, and the spectacular Flaming Gorge-Uintas National Scenic Byway.”

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MP 10-3
MP 10-4

The Utah Geological Survey’s newest geologic maps could prove useful in efforts to address geologic hazard and resource issues in Utah County. The maps cover parts of central and southern Utah Valley and surrounding areas.

The maps, each of which covers an area of about 55 square miles, include the Goshen Valley North (Map 230), Lincoln Point (Map 232), Provo (Map 233), Soldiers Pass (Map 235), and West Mountain (Map 234) 7.5’ quadrangles. Collectively, the maps include West Mountain, the southern part of the Lake Mountains, and parts of Goshen and Utah Valleys, as well as parts of the communities of Provo, Springville, Spanish Fork, and Payson.

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M-230
M-232
M-233
M-234
M-235