Show simple item record

dc.contributor.advisorChairperson, Graduate Committee: David R. Lagesonen
dc.contributor.authorPetrik, Falene Elizabethen
dc.coverage.spatialCentennial Mountains Region (Idaho and Mont.)en
dc.coverage.spatialHenrys Lake (Idaho)en
dc.description.abstractThe Centennial Mountains are an east-west trending mountain range in southwest Montana. The Centennial Mountains are bound on the south by the Eastern Snake River Plane, the north-trending Madison Range and fault on the east and the Centennial Valley on the north. The Centennial normal fault offsets the Centennial Mountains on the north down-dropping the Centennial Valley. Approximately 3000 meters of offset along the Centennial normal fault creates the Centennial Mountains. The present Centennial Mountains are subdivided into two stratigraphically different blocks by the Odell Creek normal fault. The eastern Centennial Mountains are interpreted as the upthrown block of the Odell Creek normal fault exposing Precambrian and Paleozoic rock along the northern face of the range. The western Centennial Mountains are interpreted as the downthrown block of the Odell Creek normal fault exposing Cretaceous and younger rocks. Both eastern and western segments of the Centennial Mountains are then offset along the range bounding Centennial normal fault. Offset along the Centennial normal fault started approximately 2.1 Ma as evidenced by the displacement of the 2.1 Ma Huckleberry Ridge tuff. It is believed that prior to the emplacement of the 2.1 Ma Huckleberry Ridge tuff, the Centennial Mountains had minimum to no surface relief. The majority of offset along the Centennial normal fault has occurred with in the late Pleistocene with estimated slip rates of 0.65-0.82 mm/yr. The late Pleistocene surface offsets along the Centennial Mountains have an average of 9.1-9.6 meters with similar offset seen along the eastern and western segments.en
dc.publisherMontana State University - Bozeman, College of Letters & Scienceen
dc.subject.lcshPlate tectonicsen
dc.subject.lcshGeology, Structuralen
dc.subject.lcshMathematical modelsen
dc.titleScarp analysis of the Centennial Normal Fault, Beaverhead County, Montana and Fremont County, Idahoen
dc.rights.holderCopyright 2008 by Falene Elizabeth Petriken
thesis.catalog.ckey1331834en, Graduate Committee: Kenneth L. Pierce; James G. Schmitten Sciences.en

Files in this item


This item appears in the following Collection(s)

Show simple item record

MSU uses DSpace software, copyright © 2002-2017  Duraspace. For library collections that are not accessible, we are committed to providing reasonable accommodations and timely access to users with disabilities. For assistance, please submit an accessibility request for library material.