Structural evolution of the Raft River Basin, Idaho.
Dataset Identification:
Resource Abstract:
Recent geological mapping, geophysical studies, and deep drilling in the Raft River area, Idaho, have yielded information
that is not consistent with fault-block development of the Raft River basin. Paleozoic and lower Mesozoic allochthonous rocks
that occur in the surrounding Sublett, Black Pine, Albion, and Raft River Mountains do not occur beneath the Cenozoic basin
fill deposits of the Raft River Valley, nor do Cenozoic volcanic rocks that form the adjacent Cotterel and Jim Sage Mountains.
Range-front faults have not been identified along the margins of ranges flanking the Raft River Valley. Normal faults found
in the Cotterel and Jim Sage Mountains are inferred to be concave-upward extensional structures that involve only Tertiary
volcanic rocks and basin-filling sediments. Concave-upward faults within the Raft River basin have been identified in seismic
reflection profiles. Fault displacement of the basement rocks beneath the Raft River Valley has not been documented. Structural
development of the Raft River basin based on gravity induced tectonic denudation of nearby metamorphic core complexes is suggested.
Citation
Title Structural evolution of the Raft River Basin, Idaho.
publication Date
1983-01-01T00:00:00
cited responsible party
-
originator
individual Name Covington, H.R.
organisation Name
GSA
position Name missing
Contact information
Telephone
Voice (208) 282-4254
Address
Morrill Hall, University of Idaho, Moscow, ID, 83844-3044
notes: This metadata record has been processed by the iso-19115-to-usgin-19115-data XSLT to ensure that all mandatory content for
USGIN profile has been added.2013-11-04T12:00:00
Metadata contact
-
pointOfContact
individual Name John A. Welhan
organisation Name
Idaho Geological Survey
position Name missing
Contact information
Telephone
Voice 208-282-4254
Address
Dept. of Geosciences, Idaho State University, Pocatello, ID, 83209-8072