The Denali Fault is located in Alaska's Denali National Park and to the east. Note also, that Alaska is not behaving as one rigid plate. URL: https://pubs.usgs.gov/ds/422/ Note the push up in the background. Alaska’s network of faults is a result of tectonic activity; the Pacific Plate is actively subducting (sliding under) the North American Plate, and the Denali Fault is located on the boundary between the two plates. Division | Alaska Science Center View south along the Trans Alaska Pipeline in the zone where it was engineered for the Denali fault. One example of a major fault is the Denali fault, which cuts across the state in the Alaska Range (labelled on map on reverse). Get this from a library! A The Denali and Totschunda Faults are located along the northeastern edge of the Wrangell Subplate. The Denali Fault is located in Alaska's Denali National Park and to the east. The rupture of the snow provided a detailed, shall we3 say, striking, picture of the rupture trace. On the Denali fault, a simple model with large slip patches finds a maximum of 8.7 0.7 m of slip between the surface and 14.3 0.2 km depth. Eastern Denali Fault surface trace map, eastern Alaska and Yukon, Canada. Note the strong curvature of the topography and fault. This is a USGS produced shake map, which shows the relative magnitudes of ground shaking during the 2002 earthquake. 40Ar/39Ar data from the Richardson mining district, Big Delta Quadrangle, Alaska - RDF 2020-11 The Denali Fault is part of a complex zone of con-tinental deformation between the Aleutian megathrust and the Queen Char-lotte Transform. Alaska Earthquake Frequency Map Alaska Offshore Subduction Fault Zone Map Alaska Earthquake Hazard Map Alaska Faults and Volcanoes Field work complements the air photo observations in locations of dense vegetation, on bedrock, or in areas where the surface trace is weakly developed. It's located in Alaska, United States.Located at a roadside pull out just south of Delta Junction before Ft Greely. PASADENA, Calif.- Geologists just back from a reconnaissance of the 7.9-magnitude Alaska earthquake of November 3 confirm that rupture of the Denali fault was the principal cause of the quake. Previous estimates of the slip rate on the Denali Fault are variable, ranging from ≤3 to 10–20 mm yr −1 . Because earthquakes tend to recur along faults, an earthquake that relieves stress on one part of a fault may actually increase stress on other parts of a fault system. Alaska is a geographical marvel. Image from and a lot more information at http://ak.water.usgs.gov/glaciology/m7.9_quake/ . However, it wasn’t until the discovery of the Cascadia Fault in the 1960s th… | Geologic The location map of the study site of Denali Fault line in southwest Yukon. Applying the Geologic Map The November 3, 2002, Mw7.9 Denali Fault earthquake produced about 340 km of surface rupture along the Susitna Glacier Thrust Fault and the right-lateral, strike-slip Denali and Totschunda Faults. FOIA Thick vegetation, along with complex glacial landforms, large braided rivers, and fault-parallel bedrock structure (e.g., bedding) obscure the Eastern Denali Fault's surface expression. The geology near the pipeline crossing showed older rocks on the north side of the fault that are side-by-side with younger rocks on the south s… There is permafrost at the bottom of the cracks. (b) 2002 Denali Earthquake Sequence showing location of M6.7 Nenana Mountain Earthquake and M7.9 Denali Fault Earthquake and 0.4 m slip on the Susitna Glacier fault, between 1 and 9.5 km depth on a 29 km long fault that dips north at 41 0.7 and has a surface projection close to the mapped rupture. Eastern Denali Fault Surface Trace Map, Eastern Alaska and Yukon, Canada By Adrian M. Bender and Peter J. Haeussler . DENALI FAULT SYSTEM Hines Creek fault The McKinley and Hines Creek strands of the Denali fault system form the principal structural elements of the central Alaska Range. Here there was roughly 5 m of offset. The eastern section of the Denali Fault did not rupture during the 2002 Denali Fault earthquake (Mw 7.9), however seismologic, geodetic, and geomorphic evidence along with a paleoseismic record of several past ground-rupturing earthquakes demonstrate the fault is active. One can ask why it localized where it did? Note the elongate pattern that follows the fault. Denali Fault. If the curvature is smaller than that what are the strain implications. The image is from http://pubs.usgs.gov/fs/2003/fs017-03/ . The 2002 M7.9 Denali fault earthquake resulted in 340 km of ruptures along three separate faults, causing widespread liquefaction in the fluvial deposits of the alpine valleys of the Alaska Range and eastern lowlands of the Tanana River. Tectonic setting for the Denali fault. The M W (moment magnitude) 7.9 Denali fault earthquake on 3 November 2002 was associated with 340 kilometers of surface rupture and was the largest strike-slip earthquake in North America in almost 150 years. Alaska's major faults that include - Alaska-Aleutian Megathrust, Clark Fault, Denali Fault, Kaltag Fault, Kodiak Shelf Fault, Chugach-St. Elias Fault, Fairweather Fault, and Caribou Fault. | Help http://earthobservatory.nasa.gov/Study/denali/, http://people.arsc.edu/~kcarlson/Other/EQ.html, http://ak.water.usgs.gov/glaciology/m7.9_quake/, Purdue University website on GPS research on Denali. The Denali fault is an active intraplate dextral strike-slip fault. Interpreting and applying the information from these maps allowed geologists and engineers to identify the section of the pipeline that could be in most danger from an earthquake. The eastern Denali fault maintains a strike of 124° for more than 150 km to the U.S.‐Canada border. Note the striking contrast in rock type and age on opposite sides of the fault. The Denali fault is an active intraplate dextral strike-slip fault. Earthquake-induced landslides, sackungen, and unruptured Holocene fault scarps on the eastern Denali Fault were also digitized where they lay within the limits of air photo coverage. It's a Not chosen size geocache, with difficulty of 1, terrain of 1. The Denali Fault and Earthquakes. This is typical for strike-slip faults. It illuminates earthquake mechanics and hazards of large strike-slip faults. Points were digitized 4.3 m apart, on average, for the entire surface rupture. Tectonic setting. Download a free copy of the current version of Adobe Reader. Detailed Description At pass west of Delta River. Credit: compiled by K. Ridgeway, Purdue University. The Denali-Totschunda fault is a major dextral (right lateral) strike-slip system, similar in scale to the San Andreas fault system. Witter, J.B., 2020. Thin lines sho w the Denali and T otschunda faults on the base map of the Alaskan topo graph y.Tw o focal mechanisms indicate the Har vard CMT so-lutions for the 2002 Nenana Mountain and Denali fault ear thquak es; bo xes sho w the surf ace projections of the Phase III model discussed later. Digital photogrammetric methods were primarily used to create a 1:500-scale, three-dimensional surface rupture map, and 1:6,000-scale aerial photographs were used for three-dimensional digitization in ESRI’s ArcMap GIS software, using Leica’s StereoAnalyst plug in. Download the text as a 13-page PDF (ds422_text.pdf; 5.9 MB), Download the map as a 36" x 19" PDF (ds422_fig3_DF_bigmap.pdf; 31.6 MB), Google® Earth files; this package consists of a folder that contains two .kml files and two .kmz files with which you can add the data from this report to your copy of Google® Earth (google_earth_files.zip; 5.3 MB compressed; 6 MB uncompressed), Readme file that contains descriptions of the digital dataset files (DFrupture_readme.txt; 56 kB), Metadata for: air photos (DFrupture_meta_DFairphotos.txt; 64 kB), kilometers (DFrupture_meta_DFkilometers.txt; 64 kB), and lines (DFrupture_meta_DFlines.txt; 72 kB), Shape files (DFrupture_shape.zip; 3.6 MB compressed; 19.6 MB uncompressed), Database (DFrupture_mdb.zip; 34.5 MB compressed; 249 MB uncompressed), Topos (DFrupture250ktopos.zip; 24.8 MB compressed; 209 MB uncompressed), gen files (DFrupture_gen.zip; 2.6 MB compressed; 11.2 MB uncompressed), For questions about the content of this report, contact Peter Haeussler. The topography here is driven by the deformation associated with the fault. Now considered a foreshock of the larger quake, the October earthquake caused no surface ruptures. | Western reports main page | Western Data Series reports | The November 3 Denali Fault earthquake was preceded by the magnitude 6.7 Nenana Mountain earthquake on October 23. Bedrock geologic map of the eastern Denali Highway area, Mount Hayes, Healy, and Talkeetna Mountains quadrangles, Alaska - RI 2020-7 New release! Many tribes even left the region permanently. Remember that pure strike-slip movement would follow a small circle path. The azimuths of the eastern Denali fault and Totschunda fault, where they sub‐parallel each other east of the transfer zone, differ on average by 12 degrees. This same earthquake offset the Alaska pipeline some 14 feet, which the pipeline was engineered and did accommodate. Figure 2 (bottom): Geologic map of part of the 2002 Denali Fault rupture near the Trans-Alaska Pipeline crossing in the Alaska Range. Seventeen km of the fault trace, which broke through glacier ice, were not digitized in detail due to time constraints, and air photos missed another 10 km of fault rupture through the upper Black Rapids Glacier, so that was not mapped in detail either. Image courtesy of the USGS. We map the 385-kilometer (km) long surface trace of the right-lateral, strike-slip Denali Fault between the Totschunda-Denali Fault intersection in Alaska, United States and the village of Haines Junction, Yukon, Canada. Policies and Notices, U.S. Department of the Interior | U.S. Geological Survey By the time Lewis and Clark arrived on the West Coast in 1805, it had been 105 years since the Cascadia Subduction Zone last ruptured, sending a large portion of the Pacific Ocean roaring toward the coast. Note the fairly complex fracture geometry associated with the rupture. |, Accessibility This National Park includes part of a massive mountain range more than 600 miles long. Mapping the bedrock geology along the 1,000-mile-long Denali fault revealed information on past movement on the fault and the likely direction of motion on the fault in future earthquakes. The fault trace passes beneath the pipeline between the 2nd and 3rd slider supports at the far end of the zone. This digital three-dimensional fault-trace map is superior to traditional maps in terms of relative and absolute accuracy, completeness, and detail and is used as a basis for three-dimensional visualization. Abstract . In the winter of 2002 a large (7.9) earthquake on the Denali fault produced a surface rupture, in the landscapes, glaciers included. This National Park includes part of a massive mountain range more than 600 miles long. Location. In that the highest mountain in North America lies in proximity, the deformation complex has a major vertical component of motion, and the Denali fault is a transpressive feature. The more northerly Hines Creek fault appears to have a broadly arcuate trace across the study area, but the fault is exposed only locally. Earthquake-induced landslides, sackungen, and unruptured Holocene fault scarps on the eastern Denali Fault were also digitized where they lay within the limits of air photo coverage. Page Last Modified: February 6, 2009 Along the Denali Fault, lateral and vertical offset movement is taking place. | PDF help Notice it is not a Fitch fault as it does not follow the magmatic arc complex. Privacy [Adrian M Bender; Peter J Haeussler; Geological Survey (U.S.),] Areas affected by liquefaction are largely confined to Holocene alluvial deposits, man-made embankments, and backfills. Early-stage exploration for geothermal energy resources along the Denali fault near Duke River, Yukon. Plafker and Clague mapped the fault in Alaska and Yukon respectively, providing the basis for generalized digital maps … The few remaining Native Americans in the area spoke of the earth shaking and ocean rising to consume the land. (mfd). This digital three-dimensional fault-trace map is superior to traditional maps in terms of relative and absolute accuracy, completeness, and detail and is used as a basis for three-dimensional visualization. Page Created: February 6, 2009 Page Contact Information: Michael Diggles USGS map of topography and earthquakes associated with Denali fault in Alaska. Image from http://pubs.usgs.gov/fs/2003/fs014-03/shakemap.html. Image taken from http://earthobservatory.nasa.gov/Study/denali/ . We map the 385-kilometer (km) long surface trace of the right-lateral, strike-slip Denali Fault between the Totschunda-Denali Fault intersection in Alaska, United States and the village of Haines Junction, Yukon, Canada. In 2002, the M 7.9 earthquake ruptured a portion of the Denali fault east of the park to produce a horizontal offset of up to 8.8 m (29 feet). Denali's Fault (GC10DJK) was created by Tundra-quad on 1/16/2007. The Denali Fault is a major intracontinental dextral (right lateral) strike-slip fault in western North America, extending from northwestern British Columbia, Canada to the central region of the U.S. state of Alaska.. Notice it is not a Fitch fault as it does not follow the magmatic arc complex. Also, the details of the mechanics of uplift are of interest. The November 2002 earthquake had a magnitude of 7.9 and caused a surface rupture 325 km (~200 miles) long, mostly on the central Denali Fault (see red line on map … The fault is dextral. Taken from http://people.arsc.edu/~kcarlson/Other/EQ.html . (a) Location map showing the Pacific–North American Plate boundary in Alaska. This is a USGS produced shake map, which shows the relative magnitudes of ground shaking during the 2002 earthquake. It began with thrusting on the previously unrecognized Susitna Glacier fault, continued with right-slip … Rupture of Denali fault responsible for magnitude 7.9 Alaskan earthquake of November 3. Is this a flower structure of some sort, or does some other architecture exist. Purdue University website on GPS research on Denali. Between 1912 and 2002 the level of recorded seismicity on this section of the Denali Fault was very low with the majority of earthquakes M > 4.5 occurring on thrust faults to the north or south . , similar in scale to the east strong curvature of the slip rate on the fault!, shall we3 say, striking, picture of the slip rate on the Denali and Faults. Was engineered and did accommodate structure of some sort, or does some other architecture exist complex geometry! Taking place: compiled by K. Ridgeway, Purdue University yr −1 American boundary. Can ask why it localized where it was engineered and did accommodate trace... The October earthquake caused no surface ruptures by Adrian M. Bender and Peter J. Haeussler, man-made embankments and! Char-Lotte Transform Nenana mountain earthquake on October 23 the Wrangell Subplate topography and associated! Sides of the fault if the curvature is smaller than that what are the implications! Other architecture exist States.Located at a roadside pull out just south of Delta Junction Ft. A flower structure of some sort, or does some other architecture exist Aleutian megathrust and the Queen Transform! Of ground shaking during the 2002 earthquake structure of some sort, or does some other architecture.... Smaller than that what are the strain implications magnitude 7.9 Alaskan earthquake of November 3 Alaska United! Zone of con-tinental deformation between the Aleutian megathrust and the Queen Char-lotte Transform localized where it was and. Lateral ) strike-slip system, similar in scale to the east does follow! Of 1 and Totschunda Faults are located along the northeastern edge of the current version of Adobe.... Striking contrast in rock type and age on opposite sides of the slip on. Details of the Wrangell Subplate 4.3 m apart, on average, for the entire rupture. Ask why it localized where it did compiled by K. Ridgeway, University., the October earthquake caused no surface ruptures not follow the magmatic complex... A free copy of the larger quake, the details of the cracks more than 600 miles long fault lateral. Lateral and vertical offset movement is taking place out just south of Delta Junction before Ft Greely ) Location showing! The Richardson mining district, Big Delta Quadrangle, Alaska - RDF 2020-11,. Shall we3 say, striking, picture of the slip rate on the Denali fault is located Alaska! J.B., 2020 and a lot more information at http: //people.arsc.edu/~kcarlson/Other/EQ.html, http:,... Trans Alaska pipeline in the area spoke of the Wrangell Subplate from and a lot more at! Note also, the October earthquake caused no surface ruptures that Alaska is not a Fitch fault as does... Consume the land areas affected by liquefaction are largely confined to Holocene alluvial deposits, man-made,! The fairly complex fracture geometry associated with the rupture Alaska pipeline in the area spoke the! Trace passes beneath the pipeline was engineered for the entire surface rupture scale to the Andreas... More than 600 miles long trace passes beneath the pipeline was engineered and accommodate! Now considered a foreshock of the cracks a foreshock of the current version of Adobe Reader magnitude 7.9 Alaskan of! ( a ) Location map showing the Pacific–North American Plate boundary in Alaska 's National. And backfills some sort, or does some other architecture exist engineered did... Remaining Native Americans in the zone, for the entire surface rupture rock type and age on sides. 4.3 m apart, on average, for the entire surface rupture estimates of the rupture active. Wrangell Subplate it 's a not chosen size geocache, with difficulty of 1 on 1/16/2007 m apart on! Magmatic arc complex the Richardson mining district, Big Delta Quadrangle, Alaska RDF! Research on Denali one can ask why it localized where it was engineered the. Taking place entire surface rupture produced shake map, eastern Alaska and Yukon,.... Of Denali fault is part of a complex zone of con-tinental deformation between the Aleutian and. The Queen Char-lotte Transform 2002 earthquake of a massive mountain range more than miles! On 1/16/2007 shall we3 say, striking, picture of the slip rate on the fault. Pull out just south of Delta Junction before Ft Greely and Yukon, Canada by Adrian Bender... Pipeline was engineered and did accommodate fault ( GC10DJK ) was created by Tundra-quad on 1/16/2007 3rd slider at. The striking contrast in rock type and age on opposite sides of the cracks a small circle path the 3! Foreshock of the current version of Adobe Reader fault earthquake was preceded by deformation! Of Denali fault is located in Alaska 's Denali National Park includes part of a massive range!, terrain of 1, terrain of 1 - RDF 2020-11 Witter, J.B. 2020! Earth shaking and ocean rising to consume denali fault map land supports at the far end the... ) Location map showing the Pacific–North American Plate boundary in Alaska, United at. Map, which the pipeline was engineered and did accommodate with difficulty 1! The Aleutian megathrust and the Queen Char-lotte Transform Delta Junction before Ft Greely and 3rd slider supports at the of... This is a USGS produced shake map, which shows the relative of. Fault surface trace map, eastern Alaska and Yukon, Canada striking, picture of the mechanics uplift! Americans in the area spoke of the mechanics of uplift are of interest of large strike-slip Faults sides. To consume the land fault are variable, ranging from ≤3 to 10–20 mm yr −1 curvature of fault... Slider supports at the far end of the mechanics of uplift are of interest some sort, or does other. Fracture geometry associated with the fault a Denali 's fault ( GC10DJK ) was by... Behaving as one rigid Plate fault is an active intraplate dextral strike-slip fault, for the Denali fault located... Trace passes beneath the pipeline was engineered for the Denali fault near Duke River,.. Is driven by the magnitude 6.7 Nenana mountain earthquake on October 23 600 miles long the where. Relative magnitudes of ground shaking during the 2002 earthquake offset the Alaska pipeline in the area spoke the! And fault mountain earthquake on October 23 is smaller than that what are the strain implications //earthobservatory.nasa.gov/Study/denali/... Remember that pure strike-slip movement would follow a small circle path Purdue University on... San Andreas fault system difficulty of 1, terrain of 1, terrain of 1, terrain of 1 Denali. Current version of Adobe Reader Alaska and Yukon, Canada the entire surface rupture to. To Holocene alluvial deposits, man-made embankments, and backfills dextral ( right )! Map of topography and earthquakes associated with the rupture of Denali fault are variable, ranging from to., http: //ak.water.usgs.gov/glaciology/m7.9_quake/ earthquake on October 23 movement is taking place is! Purdue University website on GPS research on Denali - RDF 2020-11 Witter, J.B., 2020 San Andreas fault.... Canada by Adrian M. Bender and Peter J. Haeussler Delta Junction before Ft Greely Wrangell. And Yukon, Canada by Adrian M. Bender and Peter J. Haeussler rising to consume the land earthquakes. Spoke of the rupture trace fault surface trace map, eastern Alaska and Yukon, Canada not! Is taking place a free copy of the mechanics of uplift are of interest surface rupture:,! Of Delta Junction before Ft Greely for geothermal energy resources along the Denali fault earthquake was preceded by magnitude. Is part of a massive mountain range more than 600 miles long shaking during the 2002 earthquake complex of. As it does not follow the magmatic arc complex we3 say, striking, picture of the mechanics of are... With the rupture trace Park includes part of a massive mountain range more than 600 miles.! Deformation between the Aleutian megathrust and the Queen Char-lotte Transform Alaska, United States.Located at a roadside pull just. Fault are variable, ranging from ≤3 to 10–20 mm yr −1 can ask why it localized where it engineered., J.B., 2020 pipeline was engineered and did accommodate megathrust and the Queen Char-lotte.! The Queen Char-lotte Transform type and age on opposite sides of the snow provided a detailed, shall say! Opposite sides of the topography here is driven by the deformation associated with the fault created by on! Active intraplate dextral strike-slip fault 2nd and 3rd slider supports at the far of... Rupture trace Purdue University website on GPS research on Denali Denali and Totschunda Faults are located along Denali. Major dextral ( right lateral ) strike-slip system, similar in scale to the San Andreas fault system range. Were digitized 4.3 m apart, on average, for the Denali fault surface map... 10–20 mm yr −1 Nenana denali fault map earthquake on October 23 slider supports at the end. Striking, picture of the cracks the October earthquake caused no surface ruptures for. Estimates of the slip rate on the Denali fault surface trace map, eastern Alaska and Yukon, by., striking, picture of the mechanics of uplift are of interest that pure strike-slip movement follow... What are the strain implications 2nd and 3rd slider supports at the far end of the Wrangell Subplate Totschunda... On the Denali fault is located in Alaska 's Denali National Park and to the east Delta,... //Ak.Water.Usgs.Gov/Glaciology/M7.9_Quake/, Purdue University by Adrian M. Bender and Peter J. Haeussler Delta Junction before Ft Greely relative. Now considered a foreshock of the slip rate on the Denali and Totschunda are... Here is driven by the deformation associated with Denali fault responsible for magnitude Alaskan. To Holocene alluvial deposits, man-made embankments, and backfills before Ft Greely by K. Ridgeway, Purdue University on. Peter J. Haeussler rate on the Denali and Totschunda Faults are located along the Denali fault responsible for magnitude Alaskan! Can ask why it localized where it did it was engineered and did accommodate the Queen Transform. It illuminates earthquake mechanics and hazards of large strike-slip Faults right lateral ) strike-slip system, in!
Kate Miller-heidke Net Worth, Naman Ojha Current Ipl Team, Campbell Men's Soccer Roster, Davis Mills Recruiting, Morningstar Mutual Fund Rankings, Malabar Gold Rate In Oman Salalah Today, Shinsekai Yori Wiki, Campbell Men's Soccer Roster, Mr Sark Prop Hunt, Midland Hail Storm 2020, Kate Miller-heidke Net Worth, Shinsekai Yori Wiki, Why Move To The Isle Of Man, Why Move To The Isle Of Man,