scholarly journals Environments favorable for the occurrence of uranium within the Mount Belknap Caldera, Beaver Valley and Sevier River Valley, west-central Utah

1979 ◽  
Author(s):  
Charles G. Cunningham ◽  
Thomas August Steven
Keyword(s):  
River Valley ◽  
West Central

scholarly journals Caddo Pottery from Eight Sites in the Middle Ouachita River Valley

2019 ◽  
Author(s):  
Mary Beth D. Trubitt
Keyword(s):  
Hot Spring ◽  
River Valley ◽  
Technological Characteristics ◽  
West Central ◽  
Ceramic Chronology ◽  
Ceramic Vessels

Documentation and analysis of ceramic vessels in the Joint Educational Consortium's Hodges Collection has focused on reconstructing grave lots based on notes left by amateur archeologist Vere Huddleston in the 1930s and 1940s. Despite problems with the data, we can glean useful information from this collection. Here, l describe Caddo pottery and other artifacts in grave lots from eight sites in Clark and Hot Spring counties of west-central Arkansas. l then order the grave lots in time based on stylistic and technological characteristics (seriation) to re.ftne the ceramic chronology of the Middle Ouachita River valley and compare mortuary assemblages through time and across space.

Evaporite tectonism in the lower Roaring Fork River valley, west-central Colorado

2002 ◽  
Author(s):  
Robert M. Kirkham ◽  
Randall K. Streufert ◽  
Michael J. Kunk ◽  
James R. Budahn ◽  
Mark R. Hudson ◽  
...  
Keyword(s):  
River Valley ◽  
West Central

Optical ages on loess derived from outwash surfaces constrain the advance of the Laurentide Ice Sheet out of the Lake Superior Basin, USA

2014 ◽  
Vol 81 (2) ◽  
pp. 318-329 ◽  
Author(s):  
Randall J. Schaetzl ◽  
Steven L. Forman ◽  
John W. Attig
Keyword(s):  
Lake Superior ◽  
Ice Sheet ◽  
River Valley ◽  
Laurentide Ice Sheet ◽  
West Central ◽  
Glacial Chronology ◽  
Osl Age

AbstractWe present textural and thickness data on loess from 125 upland sites in west-central Wisconsin, which confirm that most of this loess was derived from the sandy outwash surfaces of the Chippewa River and its tributaries, which drained the Chippewa Lobe of the Laurentide front during the Wisconsin glaciation (MIS 2). On bedrock uplands southeast of the widest outwash surfaces in the Chippewa River valley, this loess attains thicknesses > 5 m. OSL ages on this loess constrain the advance of the Laurentide ice from the Lake Superior basin and into west-central Wisconsin, at which time its meltwater started flowing down the Chippewa drainage. The oldest MAR OSL age, 23.8 ka, from basal loess on bedrock, agrees with the established, but otherwise weakly constrained, regional glacial chronology. Basal ages from four other sites range from 13.2 to 18.5 ka, pointing to the likelihood that these sites remained geomorphically unstable and did not accumulate loess until considerably later in the loess depositional interval. Other OSL ages from this loess, taken higher in the stratigraphic column but below the depth of pedoturbation, range to nearly 13 ka, suggesting that the Chippewa River valley may have remained a loess source for several millennia.

Effects of the 1997 Flood on the Transport and Storage of Sediment and Mercury within the Carson River Valley, West‐Central Nevada

1999 ◽  
Vol 107 (3) ◽  
pp. 313-327 ◽  
Author(s):  
Jerry Miller ◽  
Robert Barr ◽  
David Grow ◽  
Paul Lechler ◽  
Dorothea Richardson ◽  
...  
Keyword(s):  
River Valley ◽  
West Central ◽  
Carson River ◽  
And Storage

Ice-thrust features and the Maymont landslide in the North Saskatchewan River valley

1990 ◽  
Vol 27 (2) ◽  
pp. 229-242 ◽  
Author(s):  
Mel R. Stauffer ◽  
Don J. Gendzwill ◽  
E. Karl Sauer
Keyword(s):  
Final Stage ◽  
River Valley ◽  
Slope Instability ◽  
Normal Faults ◽  
Low Friction ◽  
Horizontal Movement ◽  
The North ◽  
West Central ◽  
Landslide Mass ◽  
Southern Side

The Battleford glacier created shearing and softening of bedrock clays, contributing to widespread slope instability along the valley of the North Saskatchewan River. The Battleford glacier flowed southeastward down the valley of the North Saskatchewan River during its final stage in west-central Saskatchewan. It created flutings, crevasse fillings, folding and faulting in ice-thrust ridges, and extensive horizontal gouge zones filled with soft, malleable clay. Extensive drilling and testing for the foundations of the Maymont bridge provided definitive data outlining at least three gouge zones. The shallowest gouge zone at an elevation of 465 m defines the base of the most severe glacial folding and deformation of the bedrock in at least one of the ice-thrust ridges. The deeper gouge zones are at about 433 and 438 m elevation. Postglacial landslides (slumps) along the southern side of the North Saskatchewan River are controlled by the gouge zones, which are low-friction slide surfaces along which large horizontal movements took place. Multiple normal faults and graben structures in the landslide mass could have been the mechanism for horizontal movement and extension with little or no rotation. Two main slide masses have been identified: the lower one moved on the middle gouge zone (438 m), and the upper one moved on the upper gouge zone (465 m).

Sign in / Sign up

Export Citation Format

Share Document