Tag Archive for: glacial

GLACIAL GEOLOGIC MAP OF THE UINTA MOUNTAINS AREA, UTAH AND WYOMING
Jeffrey S. Munroe and Benjamin J.C. Laabs

This dataset represents the first complete inventory of the glacial deposits in the Uinta Mountains since Atwood (1909) described the glacial geology of this area. It is the result of previous and continuing work by the authors and others to better understand the glacial and climatic history of this fascinating area. It depicts the distribution of glacial deposits and post-glacial sediments including mass wasting, lacustrine, and rock glacier deposits. A discussion of the glacial history and a figure showing a reconstruction of the ice extent during the local Last Glacial Maximum are also included.

This DVD contains the geologic map at 1:100,000 scale in PDF format and an ArcMap 9.3 map document. Geographic Information System (GIS) files are provided in an ESRI file geodatabase and as ESRI shapefiles. Metadata, PDF, HTML, text, and image files are included to help the user view, evaluate, and use the spatial data.

DVD (1 pl., scale 1:100,000 [contains GIS data])

MP-09-4DM (DVD)……….$24.95
MP-09-4DM (plot)……….$19.95

READ MORE

GET IT HERE

slickensidesWhat are those groovy rocks and how did they get that way?
Carole McCalla

On a hike around Lake Blanche below Sundial Peak in Big Cottonwood Canyon, a group of hikers came across long, straight, parallel grooves on a smooth, polished rock surface. Recalling another location where they had seen similar features at the foot of the mountains north of downtown Salt Lake City, they wondered if these markings were formed in the same way. Indeed, what exactly are they and how were they formed?

Although the smooth, grooved surfaces at these two locations are similar, they were actually formed in very different ways.

READ MORE

VIEW SURVEY NOTES

cascade-springsGeologic Information: The area around Cascade Springs is underlain by coarse-grained glacial sediment deposited when glaciers covered high elevations of the Wasatch Range approximately 30,000 to 10,000 years ago.

Beneath the glacial deposits, bedrock consists of Cambrian-age (about 500 million years old) quartzite, shale, sandstone, and limestone. These rocks were transported eastward 30 to 50 miles during low-angle faulting on the Charleston-Nebo thrust fault around 80 million years ago. As a result of the faulting, the bedrock in the vicinity of the springs is tilted and highly fractured.

READ MORE

VIEW SUVREY NEWS