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Laramie Mountains earthquake 1984

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Rare, large earthquakes at the Laramide deformation front—Colorado (1882) and Wyoming (1984)

William Spence, C. J. Langer, George L. Choy
Published: 01 December 1996
Bulletin of the Seismological Society of America (1996) 86 (6): 1804–1819.
DOI: https://doi.org/10.1785/BSSA0860061804
... of the Southern Rocky Mountains. More than one century later, on 18 October 1984, an m b 5.3 earthquake occurred in the Laramie Mountains, Wyoming. By studying the 1984 earthquake, we are able to provide constraints on the location and size of the 1882 earthquake. Analysis of broadband seismic data shows the 1984...
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Deep intraplate earthquakes in the western United States and their relationship to lithospheric temperatures

Ivan G. Wong, David S. Chapman
Published: 01 June 1990
Bulletin of the Seismological Society of America (1990) 80 (3): 589–599.
DOI: https://doi.org/10.1785/BSSA0800030589
.... (1985) . Preliminary results of the aftershock investigation of the October 18, 1984 Laramie Mountains, Wyoming earthquake , Earthquake Notes 56 , 24 . Marks S. M. Lindh A. G...
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Errata

Published: 01 April 1997
Bulletin of the Seismological Society of America (1997) 87 (2): 517–519.
DOI: https://doi.org/10.1785/BSSA0870020517
... earthquake is shown by large circle in the northern Front Range, and the ao °~ 1984 earthquakes are in the northern Laramie Mountains. CO 8 0 517 518 Errata a. Isoseismals for 1984 Laramie Mountains Quake; mb=5.3 (ISC) °w 112° 110° 1080 106° 1040 102° 100° 980 Billings 1:3 ~ SD 48° 44o L Lima MTfwv I Pier...
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Using Landslides to Locate the Epicenter for the Historic 1882 Earthquake in Colorado

Justin Marchlewicz, Paul Santi
Published: 22 November 2024
Environmental & Engineering Geoscience (2024) 30 (4): 245–258.
DOI: https://doi.org/10.21663/EEG-D-24-00039
..., leading to an epicentral estimate farther north than Hadsell had predicted ( Figure 2 ). Additionally, the Kirkham and Rogers (1986) estimate was later given further credibility by Spence et al. (1996) , who analyzed the 1984 Laramie Mountains earthquake and compared the generated isoseismal map...
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Geophysical studies of crustal structure in the Rocky Mountain region : A review

G. Randy Keller, Catherine M. Snelson, Anne F. Sheehan, Kenneth G. Dueker
Published: 01 January 1998
Rocky Mountain Geology (1998) 33 (2): 217–228.
DOI: https://doi.org/10.2113/33.2.217
.... B. , and Houston , R. S. , 1984 , Gravity studies across the Cheyenne belt, a Precambrian suture in southeastern Wyoming : Journal of Geodynamics , v. 1 , p. 445 – 472 . Johnson , R. A. , and Smithson , S. B. , 1985 , Thrust faulting in the Laramie Mountains, Wyoming, from...
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The Rocky Mountain Front, southwestern USA

Charles E. Chapin, Shari A. Kelley, Steven M. Cather
Journal: Geosphere
Published: 01 October 2014
Geosphere (2014) 10 (5): 1043–1060.
DOI: https://doi.org/10.1130/GES01003.1
... ; Hamilton, 1981 ; Gries, 1983 ; Bird, 1984 ; Cross, 1986 ; Dickinson et al., 1988 ). Deformation of the Rocky Mountain foreland coincided temporally with an increase in the rate of Farallon–North American convergence from ∼100 km/m.y. to as much as 150 km/m.y. during the interval ca. 75–45 Ma ( Coney...
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Small‐Magnitude Earthquakes in North‐Central Wyoming Recorded during the Bighorn Arch Seismic Experiment

Colin T. O’Rourke, Anne F. Sheehan, Eric A. Erslev, Megan L. Anderson
Published: 29 December 2015
Bulletin of the Seismological Society of America (2016) 106 (1): 281–288.
DOI: https://doi.org/10.1785/0120150114
... is classified as a moderate seismic‐hazard zone by the USGS ( Petersen et al. , 2014 ). Since 1975, it has experienced 16 earthquakes of magnitude >4, including one of magnitude 5.3 in 1984 near the Laramie Range to the southeast. Historical records show damaging earthquakes as early as 1894 near Casper...
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MAGMATIC AND STRUCTURAL EVOLUTION OF AN ANORTHOSITIC MAGMA CHAMBER: THE POE MOUNTAIN INTRUSION, LARAMIE ANORTHOSITE COMPLEX, WYOMING

James S. Scoates, Donald H. Lindsley, B. Ronald Frost
Published: 01 August 2010
The Canadian Mineralogist (2010) 48 (4): 851–885.
DOI: https://doi.org/10.3749/canmin.48.4.851
...James S. Scoates; Donald H. Lindsley; B. Ronald Frost Abstract The 200 km 2 Poe Mountain intrusion, part of the 1.43 Ga Laramie anorthosite complex in southeast Wyoming, USA, preserves an exceptional range of primary magmatic and secondary deformation-induced structures that document the sequence...
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Laramide crustal detachment in the Rockies: Cordilleran shortening of fluid-weakened foreland crust

Eric A. Erslev, Lindsay L. Worthington, Megan L. Anderson, Kate C. Miller
Published: 01 December 2022
Rocky Mountain Geology (2022) 57 (2): 65–97.
DOI: https://doi.org/10.24872/rmgjournal.57.2.65
... for partitioned strike-slip deformation in the northern Bighorn arch and Pryor Mountains [Master’s thesis]: Laramie , University of Wyoming , 246 p. Barazangi , M. , and Isacks , B.L. , 1976 , Spatial distribution of earthquakes and subduction of the Nazca plate beneath South America...
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Hydrodynamics of Denver Basin: Explanation of Subnormal Fluid Pressures

Kenneth Belitz, John D. Bredehoeft
Journal: AAPG Bulletin
Published: 01 November 1988
AAPG Bulletin (1988) 72 (11): 1334–1359.
DOI: https://doi.org/10.1306/703C999C-1707-11D7-8645000102C1865D
... . Figure 14 —Evaluating effect of structure. Simulated potentiometric maps for Dakota and basal Cretaceous unit: (A) recharge along entire length of Laramie and Front Ranges; (B) no recharge along length of mountain front. Location on Figure 1 . The numerical model of the Dakota and basal...
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Deriving geothermal parameters from bottom-hole temperatures in Wyoming

Richard W. Davis
Journal: AAPG Bulletin
Published: 01 August 2012
AAPG Bulletin (2012) 96 (8): 1579–1592.
DOI: https://doi.org/10.1306/11081110167
... and the Laramie Mountains across several mountain ranges and large intermontane basins into the overthrust belt that trends southward from Yellowstone National Park into northeastern Utah. Except for south-central Wyoming, the basins are generally foreland basins bounded by mountains that thrust upward along...
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Index to Volume 75

Published: 01 December 1985
Bulletin of the Seismological Society of America (1985) 75 (6): 1885–1898.
DOI: https://doi.org/10.1785/BSSA0750061885
..., During the Earthquakes of 1926 and 1943 . . . . . . . . . . . . . . . . . . 1383 1371 Alter, Benjamin--In Situ Velocity Estimates for Shallow Crystalline Rocks in the Adirondack Mountains, New York and the Laramie Range, Wyoming 1395 1719 Alvarez, Rosa, Cecilio J. Rebollar, and Carlos Traslosheros...
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A Sequence Stratigraphic Framework for the Middle to Late Jurassic of the Sundance Seaway, Wyoming: Implications for Correlation, Basin Evolution, and Climate Change

Silvia Danise, Steven M. Holland
Published: 01 July 2018
The Journal of Geology (2018) 126 (4): 371–405.
DOI: https://doi.org/10.1086/697692
..., including the Black Hills, Bighorn Mountains, Pryor Mountains, Wind River Mountains, and Laramie Mountains ( fig. 3 ). Development of a regionally consistent lithostratigraphic nomenclature of the Gypsum Spring and Sundance Formations has been hindered by basinwide facies changes, depositional cyclicity...
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Minutes of the Annual Meeting of the Seismological Society of America 14-16 April 1985

Published: 01 December 1985
Bulletin of the Seismological Society of America (1985) 75 (6): 1863–1870.
DOI: https://doi.org/10.1785/BSSA0750061863
... Reinterpreted in Light of the October 18, 1984, Wyoming Earthquake 10. C. J. Langer, R. A. Martin, Jr., and C. K. Wood: Preliminary Results of the Aftershock Investigation of the Otober 18, 1984, Laramie Mountains, Wyoming, Earthquake 11. I. G. Wong and J. R. Humphrey: Recent Focal Mechanisms...
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Basement and Cover-Rock Deformation During Laramide Contraction in the Northern Madison Range (Montana) and Its Influence on Cenozoic Basin Formation

Karl S. Kellogg, Christopher J. Schmidt, Susan W. Young
Journal: AAPG Bulletin
Published: 01 August 1995
AAPG Bulletin (1995) 79 (8): 1117–1137.
DOI: https://doi.org/10.1306/8D2B21F5-171E-11D7-8645000102C1865D
... are typical of a style of deformation that influenced a large part of southwestern Montana. Thrusts and valley-bounding normal faults are juxtaposed along the western fronts of many other mountain ranges, including the Snowcrest Range ( Sheedlo, 1984 ; Guthrie et al., 1989 ; McBride et al., 1992...
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Structural and tectonic evolution of the Cherokee Ridge arch, south-central Wyoming: Implications for recurring strike-slip along the Cheyenne Belt suture zone

Jeffrey W. Bader
Published: 01 January 2008
Rocky Mountain Geology (2008) 43 (1): 23–40.
DOI: https://doi.org/10.2113/gsrocky.43.1.23
... through southern Wyoming and is exposed in the Sierra Madre and Medicine Bow Mountains, and extends through the Cherokee Ridge area to just north of the Uinta Mountains of Utah and Colorado ( Karlstrom and Houston, 1984 ; Crosswhite and Humphreys, 2003 ; Nelson et al., 2007 ). The Cheyenne belt...
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Imaging the mountainless root of the 1.8 Ga Cheyenne belt suture and clues to its tectonic stability

Jason A. Crosswhite, Eugene D. Humphreys
Journal: Geology
Published: 01 August 2003
Geology (2003) 31 (8): 669–672.
DOI: https://doi.org/10.1130/G19552.1
... . Hansen , W.R. , 1984 , Post-Laramide tectonic history of the eastern Uinta Mountains, Utah, Colorado, and Wyoming : The Mountain Geologist , v. 21 p. 5 - 29 . Karlstrom , K.E. , and Houston , R.S. , 1984 , The Cheyenne belt: Analysis of a Proterozoic suture in southern Wyoming...
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Large-scale geomorphology and fission-track thermochronology in topographic and exhumation reconstructions of the Southern Rocky Mountains

Frank J. Pazzaglia, Shari A. Kelley
Published: 01 January 1998
Rocky Mountain Geology (1998) 33 (2): 229–257.
DOI: https://doi.org/10.2113/33.2.229
... ratio sensitivity analyses. Mountain range Mean elevation Z (m) Mean relief R (m) Mean slope (°) ZR 1 Long term exhumation rate (km/m.y.) Archean Craton Laramie Mountains 2 2326 149 4.3 15 ∼ 0.09 (?) 3 (50 Ma) Yavapai Front Range 2810 425...
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Two Deep Earthquakes in Wyoming

Cliff Frohlich, Wei Gan, Robert B. Herrmann
Published: 11 March 2015
Seismological Research Letters (2015) 86 (3): 810–818.
DOI: https://doi.org/10.1785/0220140197
... USArray seismograph stations (white triangles); the event labeled f occurred 15 September 2013 at 19:22 UTC (M 1.8). The shaded area indicates the Wind River Mountains. The bold rectangle in the U.S. map inset indicates map boundaries. For the 2013 Wyoming earthquakes, two unusual situations...
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Initial Laramide tectonism recorded by Upper Cretaceous paleoseismites in the northern Bighorn Basin, USA: Field indicators of an applied end load stress

W.T. Jackson, Jr., M.P. McKay, M.J. Bartholomew, D.T. Allison, D.L. Spurgeon, B. Shaulis, J.A. VanTongeren, J.B. Setera
Journal: Geology
Published: 23 September 2019
Geology (2019) 47 (11): 1059–1063.
DOI: https://doi.org/10.1130/G46738.1
...; CU—Circle uplift; DB—Denver Basin; FR—Front Range; FS—Ferris, Green, Seminoe, Shirley Mountains; GDB—Great Divide Basin; GRB—Green River Basin; HB—Hanna Basin; HM—Hogback monocline; KP—Kaiparowits Plateau; KU—Kaibab uplift; LR—Laramie Range; MU—Monument upwarp; OC—Owl Creek Mountains; PB—Piceance...
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