Geology – Fault
150101-167Glacial valleys and frontal fault zone on the north side of the Wallowa Mountains, Oregon.
ADep-18sFault-bounded east front of Steens Mountain and Alvord Desert.
SrA-07Aerial view of faulted front of the Black Mountains.
Black Mtns., Death Valley, CA, showing range-bounding fault andAerial view of Black Mountains and Copper Canyon turtleback (greenish rock on right).
140426-51Angular unconformity at Ryan Mesa: 4 Ma basalt flows overlying faulted Artist Drive (left) and Furnace Creek (right) formations.
IMG_1345Boulders on alluvial fan, Death Valley, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone.
150427-57Keystone Thrust fault, Nevada--gray Cambrian ridges over tan Jurassic cliffs.
Normal faults in Lewis Thrust fault zone, Glacier National Park,Normal faults extend the upper plate of Proterozoic rock of the Lewis Thrust.
Lewis thrust fault and mountains of Glacier National Park, MontaThe Lewis thrust fault, which places rock over the Proterozoic Belt Supergroup over Cretaceous rock, lies at the base of the cliffs, just below the tan rock unit.
Repetition of strata on thrust fault, northenr Montana.Both ridge-forming rock units are Missiissippian-age limestone that has been repeated along a thrust fault. Sun River Canyon, Montana.
Normal fault cutting Tertiary conglomerate, Mojave Desert, CA.Normal fault cutting Tertiary conglomerate, Mojave Desert, CA.
Headwall of a landslide: small normal fault offsetting upliftedHeadwall of a landslide: small normal fault offsetting uplifted Pleistocene marine gravels, Cape Blanco, Oregon. Continuation of uplifted marine terrace in background.
Crack-in-the-ground, a fissure developed along a normal fault inCrack-in-the-ground, a fissure developed along a normal fault in central Oregon.
Lake Abert and Abert Rim, a downdropped basin and uplifted rangeLake Abert and Abert Rim, a downdropped basin and uplifted range in Oregon's Basin and Range Province. A large normal fault runs along the break in slope on the left side of the photo. Basalt boulders in the foreground.
Asymmetric anticline and syncline in limestone, Mt. Kidd, AlbertAsymmetric anticline and syncline in limestone, Mt. Kidd, Alberta. These folds are fault-propagation folds, as they formed at the termination of the Lewis thrust.
Thrust faults and folds, Oregon Coast Range.Thrust faults and folds, Oregon Coast Range.
Sidewalk offset and bent by creep on Calaveras fault, Hollister, CaliforniaSidewalk offset and bent by creep on Calaveras fault, Hollister, California
Fault-block mountain and desert spring.Abrupt fault-bounded east side of Steens Mountain, SE Oregon and water from spring.
Chief Mountain Klippe, Glacier National Park, Montana and mountaChief Mountain, a klippe of the Lewis Thrust fault, at the US-Canada border in Glacier National Park, Montana. The fault places resistant rock of the Late Precambrian Belt Supergroup over softer Cretaceous-age sandstone and shale --and so lies at the base of the cliffs, all along the mountain front. Several smaller klippen lie to the left of Chief Mountain, between it and the rest of the range.
Willamette River, Portland Hills fault, and Portland, OR
Trace of San Andreas fault, SF Peninsula, CA
San Andreas fault, San Bernardino, CA
Trace of Wasatch Fault Zone, Salt Lake City, Utah
New building construction along Wasatch fault zone, Salt Lake Ci
Sidewalk offset by creep on Calaveras fault, Hollister, CaliforniaSidewalk offset by creep on Calaveras fault, Hollister, California
IMG_1343Boulders on alluvial fan, Death Valley, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone.
IMG_1396San Andreas fault at Wallace Creek in the Carrizo Plain, California, view towards the northeast. Note how the stream gully is abruptly deflected to the right about 10 meters. That deflection was caused by right-lateral slip events (earthquakes) on the fault. The deflection is not particularly great, because the stream gully is young.
IMG_1345Boulders on alluvial fan, Death Valley, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone.
IMG_1404San Andreas fault at Wallace Creek in the Carrizo Plain, California, view towards the northeast. Note how the stream gully is abruptly deflected to the right about 150 meters. That deflection is caused by repeated right-lateral slip events (earthquakes) along the fault.
mafic dike intruding gneiss. Note fault.
San Andreas fault in Coachella Valley, CA.
Recently active Black Mountains fault zone, Death Valley, CA
Fault scarp and alluvial fan, Death Valley, CA.
Fault scarp: Owens Valley fault, at base of Sierra Nevada, CA.
Fault-bounded mountain front, Death Valley, CA.
Cedar City, Utah and Hurricane Fault
Fault-controlled mountain front, Death Valley, CA.
Wineglass Canyon and housing developments along Wasatch fault zo
Offset sidewalk by fault creep. Calaveras fault, Hollister, CA.
Drowned trees and fault scarp, Hawaii.
Fault scarps and housing developments along Wasatch fault zone,
Aerial view of faulted plunging anticline, Colorado Front Range.
Contrasting behavior: brittle faulting and ductile flow.
Contrasting behavior: faulted diabase sill and ductiley deformed
Normal fault, SE California.
Tilted fault block, Eagle Mtn., Amargosa Valley, CA.
Normal fault, SE Utah.
Conjugate normal faults, SE Utah.
Normal faults and tilted ash bed, SE Cal.
Low angle normal fault (detachment fault), Copper Canyon turtleb
Detachment fault (Boundary Canyon fault) Death Valley, CA.
Black Mtns., Death Valley, CA, showing range-bounding fault and
Whipple Mtns Detachment fault, SE Cal.
Detachment fault, showing minor faults in hanging wall terminati
Normal fault, Tertiary Volcanic rock over Precambrian basement g
Thrust fault, placing basement granitic rock over Tertiary sedim
Thrust fault, southern Utah.
Thrust fault, placing Paleozoic rock over Tertiary rock, Tien Sh
Imbricate thrust faults, repeating dark brown ledges of the Tria
Thrust fault and folds, SW Wales, UK.
Thrust fault and fault-bend fold, eastern WA.
Lewis Thrust, N. Montana and southern Alberta. This fault place
Minor thrust faults in core of anticline, SW Wales, UK.
Imbricate thrust faults repeating brown ledges of Triassic Dinwo
Thrust fault and fold, N. Montana.
Aerial view of Furnace Creek Fault zone, Death Valley, CA.
Strike-slip faults offsetting granitic dike, N. Wisconsin.
Small right- and left-lateral faults in siltstone, S. BC, Canada
Conjugate strike slip faults and associated fractures in siltsto
Right-lateral fault in sandstone, Oregon.
Fault gouge along fault surface.
Color-banded fault gouge. Main fault surface is in upper right
Calcite fibers on fault surface.
Brecciated limestone (not in a fault zone). Death Valley, CA.
Slickenlines on fault surface.
Detachment fault. Rock above and below deformed independently o
Faulted angular unconformity between Pliocene basalt and folded
Serpentinite near John Day, OregonSerpentinite, exposed in terrane boundary fault zone near John Day, Oregon.
Serpentinite near John Day, OregonSerpentinite, exposed in terrane boundary fault zone near John Day, Oregon.
