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Topic: Fault geology


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In the News (Fri 27 Nov 09)

  
  San Andreas Fault Map - Zoom In on the Fault! - GEOLOGY.COM
A fault trace is a line on a map where the fault is believed to intersect Earth's surface.
The San Andreas Fault trace shown on this map is approximate.
We have chosen to represent the fault as a thin line, not because the location is known that precisely, but because we do not want to obscure ground features and evidence of the fault's location that can be seen in the satellite images.
geology.com /san-andreas-fault   (401 words)

  
  AllRefer.com - fault (Geology And Oceanography) - Encyclopedia
fault, in geology, fracture in the earth's crust in which the rock on one side of the fracture has measurable movement in relation to the rock on the other side.
Movement along a fault plane may be vertical, horizontal, or oblique in direction, or it may consist in the rotation of one or both of the fault blocks, with most movements associated with mountain building and plate tectonics.
All types of faults have been recognized on the ocean floor: normal faults occur in the rift valleys associated with mid ocean ridges spreading at slow rates; strike-slip faults appear between the offset portions of mid-ocean ridges; and thrust faults occur at subducting plate boundaries.
reference.allrefer.com /encyclopedia/F/fault.html   (505 words)

  
 Geology - Wikipedia, the free encyclopedia
Geology (from Greek γη- (ge-, "the earth") and λογος (logos, "word", "reason")) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it.
The word "geology" was first used by Jean-André Deluc in the year 1778 and introduced as a fixed term by Horace-Bénédict de Saussure in the year 1779.
Faults are younger than the rocks they cut; accordingly, if a fault is found that penetrates some formations but not those on top of it, then the formations that were cut are older than the fault, and the ones that are not cut must be younger than the fault.
en.wikipedia.org /wiki/Geology   (1489 words)

  
 MSN Encarta - Search Results - Fault (geology)
Geology, study of the planet earth, its rocky exterior, its history, and the processes that act upon it.
Geology is also referred to as earth science...
Hawaii's Mauna Loa, the world's largest active volcano, began erupting on March 25, and the resulting outpouring of lava was its largest since 1950.
encarta.msn.com /Fault_(geology).html   (151 words)

  
 Fault Finding
Historical geology is the study of the fossils and rock formations found in the earth, and from the positioning of these fossils and rock layers called "strata" we derive information regarding the estimate of the age of the earth, and the estimates of the ages of particular layers of rock.
Historical geology is a misnomer, since evolutionists presume the ages to be prehistoric.
Oard bases his theories upon vertical faulting and Woodmorappe's TAB model proposes that the deposition of strata occurred in a sequence as the earth's crust downwarped.
www.rae.org /revev2.html   (4974 words)

  
 MSN Encarta - Search Results - fault
Fault (geology), crack in the crust of the earth along which there has been movement of the rocks on either side of the crack.
Fault (law), culpability or responsibility for a mistake or an offense.
Acting and Actors: Where he falls short, 'tis…, Betrayal: In some one of your…, Character: If we had no faults…, Conscience: Conscience is a...
ca.encarta.msn.com /fault.html   (88 words)

  
 references
Fault Movements And Tectonics Of Eastern Iran: Boundaries Of The Lut Plate.
Geology Of The Musandam Peninsula (Sultanate Of Oman) And Its Surroundings.
The Geology Of The Iran-Gulf Of Oman Region: A Synthesis.
atlas.geo.cornell.edu /ctbt/references.html   (14779 words)

  
 CV   (Site not responding. Last check: 2007-11-05)
A correlation was found to exist between the displacement on the fault and the width and style of deformation in the damage zone.
Fault displacement profiles and damage zone geometry: interpreting the record of fault growth in the Navajo Sandstone, Utah.
The epicentre was near the centre of the fault trace but maximum slip of 8.9 m was near the northern tip of the fault at a bend in the fault.
www.tcd.ie /Geology/shiptonz/CV.html   (2824 words)

  
 San Gabriel Fault - Geology of Southern California, 1954.
The topographic trace of the fault zone is quite straight and is marked by aligned canyons and notches eroded in the sheared and broken rock.
At present, however, the areas across the fault from each deposit are mantled by sedimentary rocks that are older than the conglomerates, which of course means that the basement rocks of these areas were not available as sources of clasts for the conglomerates.
Southwest of the San Gabriel fault zone, and 4 to 6 miles northwest of Castaic, coarse conglomerates are interbedded in sandstone and siltstone of the Modelo formation, as shown on the large-scale inset map in figure 1.
www.scvhistory.com /scvhistory/sangabriel1954.htm   (2504 words)

  
 fault on Encyclopedia.com   (Site not responding. Last check: 2007-11-05)
in geology, fracture in the earth's crust in which the rock on one side of the fracture has measurable movement in relation to the rock on the other side.
A fault of youth; new scientific ground was broken when geologists finally noticed that the Meers fault is young - much younger than any other surface rupture east of the Rockies.
The Early 1990s This RAID II prototype in 1992, which embodies principles of high performance and fault toleranc.
www.encyclopedia.com /html/f1/fault.asp   (1038 words)

  
 Structural Geology of Fault Rocks and Brittle Shear Zones
Field observations of the diversity of intersection geometries between upper plate faults and the detachment, the presence of gouge oriente d parallel/sub-parallel to upper plate structures, and the incorporation of upper plate material into t he gouge reveal a strong kinematic coupling between slip on upper plate faults and slip on the detachment.
Downdip trends in the strike of upper plate faults may reflect a spatial variation in the obliquity of slip along the detachment; the variation in slip direction may be due in part to the upper plate moving over an irregular detachment.
Below a sharp, locally striated fault plane at the base of the hanging wall is a fault-parallel layer of aphanitic gouge, from a few to 30 cm thick, which has a strong microfabric indicative of high shear strains (>>10) and which presents evidence that fluids were present during deformation.
earthweb.ess.washington.edu /cowan   (2765 words)

  
 [No title]   (Site not responding. Last check: 2007-11-05)
] A fault whose strike is parallel with that of the strata involved.
] The component of the slip of a fault that is parallel to the strike of the fault.
] A fault whose direction of movement is parallel to the strike of the fault.
www.accessscience.com /Dictionary/S/S58/DictS58.html   (2849 words)

  
 ScienceDaily: Geology Articles
Large faults within the Earth's crust are the result of shear motion and active fault zones are...
Engineering Geology is the application of the science of geology to the understanding of geologic phenomena and the engineering solution of geologic hazards and other geologic problems for...
The Alpine Fault is a geological fault, known as a right-lateral strike-slip fault, that runs almost the entire length of New Zealand's South Island.
www.sciencedaily.com /articles/earth_climate/geology   (575 words)

  
 Alpine Fault: Geology Department, University of Otago, New Zealand
This area is a complex zone of oblique thrusting on the Alpine Fault, with sheets of mylonite thrust up to 2 km westwards over Quaternary gravels.
"Out of sequence" imbrication of the fault and complex internal deformation of the thrust sheets is related to rapid erosion by the Waikukupa River following glacial advances.
The photograph shows the youngest strand of the Alpine Fault in Hare Mare Creek, looking southwards; the light coloured zone at the top of the face of gravel is the hydrothermally altered basal cataclasite - here this is c.
www.otago.ac.nz /Geology/af/09-waikukupa-photo.html   (132 words)

  
 2007 Geology Articles | Earth Science Articles | Geology.com
A blend of geology, history and humor related to copper mining in colonial Connecticut.
Motion along a listric fault (a curved normal fault with a dip that decreases with depth) underlying much of southeastern Louisiana is transporting that area southward and contributing to subsidence.
Geology Salaries - are up sharply according to an AAPG survey.
geology.com /body.htm   (922 words)

  
 Kattenhorn (1994): MS References   (Site not responding. Last check: 2007-11-05)
Charlesworth, H.A.K., and Gagnon, L.G., 1985, Intercutaneous wedges, the triangle zone and structural thickening of the Mynheer coal seam at Coal Valley in the Rocky Mountain foothills of central Alberta: Bulletin of Canadian Petroleum Geology, v.
Dahlstrom, C.D.A., 1970, Structural geology in the eastern margin of the Canadian Rocky Mountains: Bulletin of Canadian Petroleum Geology, v.
Hubbert, M.K., and Rubey, W.W., 1959, Role of fluid pressure in mechanics of overthrust faulting, I, Mechanics of fluid-filled solids and its application to overthrust faulting: Geological Society of America Bulletin, v.
www.webpages.uidaho.edu /~simkat/MSthesis/ms_refs.html   (1706 words)

  
 Quake: Virtual Fault Tour
The camera is attached to the kite line and controlled remotely from the ground using a radio control for a model airplane.
The San Andreas fault, with a length of more than 700 miles (1100 kilometers), is the boundary between the Pacific and North American tectonic plates.
This is because the Carrizo Plain is arid, and the fault has not been significantly eroded.
quake.wr.usgs.gov /kap/carrizo   (343 words)

  
 Geology.com - Earth Science News, Maps, Dictionary, Articles, Jobs
Geology Dictionary: Look up definitions in our free geology dictionary.
Geology Search: A Google search that gives preference to selected geology sites.
San Andreas Fault: Photos and description of the San Andreas Fault by Dr. David Lynch, Ph.D. Volcanes of the Solar System: Active volcanoes are known on four bodies in our solar system.
geology.com   (602 words)

  
 FLUIDS AND FLUID FLOW IN FAULTS AND SHEAR ZONES
Knipe, R. J., 1993, The influence of fault zone processes and diagenesis on fluid flow, in A. Horbury and A. Robinson, eds., Diagenesis and Basin Development, American Association of Petroleum Geologists, Studies in Geology #36, p.
Rice, J. R., 1992, Fault stress states, pore pressure distributions, and the weakness of the San Andreas fault, in B. Evans and T. Wong, eds., Fault mechanics and transport properties of rocks, San Diego, Academic Press, p.
Jackson, J. and N. White, 1989, Normal faulting in the upper continental crust: observations from regions of active extension, Journal of Structural Geology, v.
www.ees.nmt.edu /Geol/Faults/Faultsflow/FaultBibliography.html   (9558 words)

  
 Southern California Areal Mapping Project home
Barrows, A.G., 1979, Geology and fault activity of the Valyermo segment of the San Andreas fault zone, Los Angeles County, California: California Division of Mines and Geology Open-File Report 79-1LA, 49 p., scale 1:12,000.
Barrows, A.G., Kahle, J.E., and Beeby, D.J., 1976, Geology and fault activity of the Palmdale segment of the San Andreas fault zone, Los Angeles County, California: California Division of Mines and Geology Open-File Report 76-6LA, 30 p., scale 1:12,000.
Spotila, J.A., and Sieh, Kerry, 2000, Architecture of transpressional thrust faulting in the San Bernardino Mountains, southern California, from deformation of a deeply weathered surface: Tectonics, v.
scamp.wr.usgs.gov /scamp/html/gm_sb_ref.html   (6603 words)

  
 Judith S. Chester, Assistant Professor, The Department of Geology & Geophysics
Deformation and alteration reactions during faulting: importance to earthquake nucleation and rupture propagation in the continental crust; neotectonics; mechanisms of creep compaction of reservoir rock; mechanics of fold-fault interaction in anisotropic rock; field investigation and physical modeling of fold-thrust structures; characterization and structural interpretation of fractured reservoirs
Structure and petrology of the Kern Canyon fault, California: A deeply exhumed strike-slip fault.
Chester, F.M., Chester, J.S., Evans, J. P., Kirschner, D.L., Schulz, S.E., 2003, Internal fault structure of large-displacement faults in the continental crust, Rupturing the Lithosphere, MARGINS Theoretical Institute, Vol.
geoweb.tamu.edu /faculty/chesterj   (724 words)

  
 SwRI: Geomechanics and Reservoir Engineering for Geoscience Services for the Oil and Gas Industry   (Site not responding. Last check: 2007-11-05)
"Fault zone characteristics and deformation mechanisms of the Bishop Tuff, Bishop, California: Investigations of critical deformation elements and permeability within a porous, non-welded tuff sequence." EOS, Transactions of the American Geophysical Union, 2002 Fall Meeting Supplement, Abstract T12G–10.
"Detachment faulting in the western Basin and Range: New geometric, thermal, and temporal constraints from the Bare Mountain Region in southwestern Nevada." EOS Transactions of the American Geophysical Union.
"Fault block deformation resulting from fault displacement gradients at Yucca Mountain, Nevada." EOS, Transactions of the American Geophysical Union.
www.swri.org /4org/d20/geosci/pubssg.htm   (1346 words)

  
 Geological Sciences at Arizona State University : J Ramón Arrowsmith   (Site not responding. Last check: 2007-11-05)
Hilley, G. E., Arrowsmith, J R., Amoroso, L., The role of the interaction of normal faults and fractures on scarp morphology, Geophysical Research Letters, in press, 2001.
Hilley, G. E., Arrowsmith, J R., and Stone, E. M., Using microseismicity and surface offset data to define fault segment boundaries along low friction faults, with an example from the Cholame-Carrizo segment boundary along the San Andreas Fault, Southern California, Bulletin of the Seismological Society of America, v.
Arrowsmith, J R. and D. Rhodes, Original forms and initial modifications of the Galway Lake Road scarp formed along the Emerson fault during the 28 June 1992 Landers, California, earthquake, Bulletin of the Seismological Society of America, 84, 511-527, 1994.
geology.asu.edu /people/faculty/arrowsmith   (435 words)

  
 [No title]
(*) symmetry_d char(6) Boolean indicating whether fault is symmetrical.(*) tdat_rel_d char(15) Descriptor for the reliability of fault top data(*) depth_top double Vertical distance from surface to fault top.
(*) dip_angle double Estimated angle for the dip of the fault.
Media: 41" x 39" paper map Title: Geologic Map of Harford County Author/Agency: State of Maryland, Maryland Geological Survey, Geology of the crystalline rocks by D. Southwick, Geology of the coastal plain by J. Owens Date: 1968 Scale: 1:62,500 Projection: Unknown.
web.ead.anl.gov /jfield/gis/mge_dict/getec.cfm   (594 words)

  
 ScienceDaily: Earthquake Articles
The North Anatolian Fault is one of the most energetic earthquake zones in the world.
Earthquake liquefaction, often referred to simply as liquefaction, is the process by which saturated, unconsolidated soil or sand is converted into a suspension during an...
San Andreas Fault is a geological fault that spans a length of roughly 800 miles (1287 kilometres) through California, United States.
www.sciencedaily.com /articles/earth_climate/earthquakes   (535 words)

  
 fault
Movement along a fault plane may be vertical, horizontal, or oblique in direction, or it may consist in the rotation of one or both of the fault blocks, with most movements associated with mountain building and
Active faults, though they may not move for decades, can move many feet in a matter of seconds, producing an
Faults create interpretation problems for geologists by altering the relations of strata (see
www.factmonster.com /ce6/sci/A0818338.html   (397 words)

  
 UCLA - Earth and Space Sciences - An Yin, Professor of Geology
Structural geology; tectonics; mechanics of the continental crust; geometry, kinematics and mechanics of thrust systems and detachment fault systems; Tectonic evolution of the Himalayas, Tibetan plateau, and North American Cordillera.
Yin, A., Fillipone, J.A., T. Harrison, and J.A. Sample, 1998, Fault kinematics of the western Lewis and Clark line in northern Idaho and northwestern Montana: Implications for possible mechanisms of arc segmentation, In Berg, R. B., ed., Belt Symposium III: Montana Bureau of Mines and Geology Special Publication 112, p.
Taylor M., A. Yin, F. Ryerson, P. Kapp, L. Ding, Conjugate strike-slip faulting along the Bangong-Nujiang suture zone accommodates coeval east-west extension and north-south shortening in the interior of the Tibetan Plateau, Tectonics, 22 (4), 1044, doi:10.1029/2002TC001361, 2003.
www.ess.ucla.edu /faculty/yin/index.asp   (2261 words)

  
 Alpine Fault - virtual trip: Geology Department, University of Otago, New Zealand
For more specific information about the Alpine Fault (maps, cross sections etc) see our main Alpine Fault feature.
The Alpine Fault is the dominant structure defining the Australian-Pacific plate boundary in the South Island of New Zealand.
Although the Alpine Fault accommodates a substantial amount of interplate slip, a significant proportion is distributed to the east within and east of the Southern Alps.
www.otago.ac.nz /geology/features/aftrip/start.htm   (220 words)

  
 [No title]
The geology and mineral deposits of the district have been painstakingly studied for many years.
New data is limited to deposits of chalcocite and native copper discovered since the previous mapping in the 1950's, to a more detailed study of rhyolite bodies, and to radiometric age determinations.
For areas southeast of the Keweenaw fault, new geophysical data and drill holes allow some new inferences about the geology of volcanic rocks covered by a thin veneer of Jacobsville Sandstone.
pubs.usgs.gov /of/of99-149/metadata.txt   (3723 words)

  
 Soil Tectonics - Bibliography
A., 1982, Slides and script for earthquake planning scenario for a magnitude 8.3 earthquake on the San Andreas fault in the San Francisco Bay area, California (Based upon Special Publication 61), California Division of Mines and Geology Open-File Report 82-23 SF (includes 10 slides), 19 p.
R., and Borchardt, Glenn, 1996, Implications for the 1838 San Andreas fault earthquake, of relocating the 1836 earthquake to San Juan Bautista [abs.]: EOS, Transactions of the American Geophysical Union, v.
R., and Borchardt, Glenn, 1998, Re-evaluation of the 1836 "Hayward fault" and the 1838 San Andreas fault earthquakes: Bulletin of the Seismological Society of America, v.
www.soiltectonics.com /bibliography.html   (7565 words)

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