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Beartooth Orogeny

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Journal Article
Journal: GSA Bulletin
Published: 01 June 1969
GSA Bulletin (1969) 80 (6): 1053–1060.
... xenolith-bearing granite is of late formation. The tectonic, metamorphic, and igneous events recognized are considered to have been developed during a major erogenic episode which is named the Beartooth orogeny. 13 6 1968 19 12 1968 Copyright © 1969, The Geological Society of America, Inc...
Journal Article
Journal: GSA Bulletin
Published: 01 November 1991
GSA Bulletin (1991) 103 (11): 1458–1475.
... information about Laramide tectonics in the northern Rocky Mountain foreland and has implications for models of fault-propagation folding and the development of synorogenic basins in thrust-faulted terranes. During the Laramide orogeny, the Beartooth Conglomerate was deposited by alluvial fans and a coarse...
Journal Article
Journal: GSA Bulletin
Published: 01 January 1994
GSA Bulletin (1994) 106 (1): 74–85.
...GOMAA I. OMAR; TIMOTHY M. LUTZ; ROBERT GIEGENGACK Abstract The crystalline rocks of the Beartooth overthrust in southwest Montana and northwest Wyoming were uplifted and thrust over the northwest margin of the Bighorn basin during the Laramide orogeny. The timing and geometry of that event is well...
Series: GSA Special Papers
Published: 01 January 1975
DOI: 10.1130/SPE157-p1
... operated in varying degrees. Concepts regarding structural evolution of the Beartooth Mountains have changed. Our view, based on the multiplicity of data enumerated in the text, indicates that there were at least four bona fide orogenies widely separated in time, each differing in its grade...
Series: GSA Memoirs
Published: 01 January 1969
DOI: 10.1130/MEM115-p53
... The Beartooth Mountains consist of a Precambrian crystalline core uplifted during the Laramide orogeny. This core has been studied by several groups under the direction of Arie Poldervaart to determine the origin and geologic history of the rocks. All published and unpublished work...
Journal Article
Journal: GSA Bulletin
Published: 01 January 1966
GSA Bulletin (1966) 77 (1): 45–64.
... sequence, (2) formation of open folds, (3) regional metamorphism, granitization, and pegmatite formation, (4) emplacement of Stillwater complex, (5) regional metamorphism and pegmatite formation about 2700 m.y. ago, (6) intrusion of late Precambrian dolerite dikes, and (7) Laramide orogeny. 10 8 1964...
Journal Article
Journal: GSA Bulletin
Published: 01 July 1946
GSA Bulletin (1946) 57 (7): 675–686.
..., Bearpaw, and possibly the Lennep; in other areas they are interfingered with these formations. Hence they signify a predominance of volcanic activity along the northern front of the Beartooths during this time interval. Sedimentary petrographic studies show an absence of minerals derived from metamorphic...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 February 2017
Lithosphere (2017) 9 (1): 100–116.
... Laramide orogeny, which arched the Beartooth Range via opposing faults, the Beartooth thrust and the Gardiner thrust to the northeast and southwest, respectively. Locally, Laramide deformation was responsible for the near-vertical and locally overturned nature of the stratiform Stillwater Complex rocks...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 March 2000
AAPG Bulletin (2000) 84 (3): 360–375.
... decollement mechanics ( Cook and Varsek, 1994 ). The Beartooth uplift of Montana and Wyoming ( Figure 1 ) is a 60 x 125 km Precambrian crystalline mass that was once covered by 3-4 km of mostly marine Phanerozoic sedimentary rocks ( Foose et al., 1961 ). During the Laramide orogeny, the area achieved...
FIGURES | View All (13)
Journal Article
Journal: GSA Bulletin
Published: 01 August 1942
GSA Bulletin (1942) 53 (8): 1175–1186.
... rocks have been tilted by the intrusion of several laccoliths prior to the Laramide orogeny. Other pyroclastics are later than the laccoliths but pre-Lance. Igneous activity had ceased before the main Beartooth thrusting. National Bureau of Standards, Washington, D. C. Presented before...
Journal Article
Published: 30 November 2006
Canadian Journal of Earth Sciences (2006) 43 (10): 1391–1397.
...P.A. Mueller; C.D. Frost Abstract The Wyoming Province is a distinctive Archean craton in the northwestern United States that can be subdivided into three subprovinces, namely, from oldest to youngest, the Montana metasedimentary province, the Beartooth–Bighorn magmatic zone, and the Southern...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 May 2016
GSA Bulletin (2016) 128 (5-6): 973–988.
... and observed tectonic subsidence is good up until the time that local deformation by the Laramide orogeny begins. This is most likely due to local flexural effects of mountain building overwhelming regional dynamic effects. Maps for successive time intervals show that the model matches the geologic history...
FIGURES | View All (8)
Journal Article
Journal: GSA Bulletin
Published: 11 May 2017
GSA Bulletin (2017) 129 (9-10): 1209–1226.
...Jeffrey M. Amato; Greg H. Mack; Tara N. Jonell; William R. Seager; Garland R. Upchurch Abstract The Laramide orogeny is a classic yet controversial mountain-building event that resulted, in the southwest United States, in uplifts, sedimentation, and magmatism that can be used to constrain the onset...
FIGURES | View All (7)
Journal Article
Published: 01 December 2019
Rocky Mountain Geology (2019) 54 (2): 47–95.
... became elevated late in the Laramide orogeny (no older than the Early Eocene) through east-directed faulting of basement rocks via the extensive Line Creek–Oregon Basin thrust system. As that active faulting occurred, the overlying Phanerozoic strata (Lower Cambrian through Lower Eocene) responded...
FIGURES | View All (41)
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1983
AAPG Bulletin (1983) 67 (8): 1342–1343.
... by the Big Horn Mountains; on the south by the Owl Creek Mountains; on the west by the Absaroka and Beartooth Mountains; and on the north by the Nye-Bowler lineament. The combination of a great reservoir-source duet in the Paleozoic rocks and the creation of large anticlines during the Laramide orogeny has...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1936
AAPG Bulletin (1936) 20 (9): 1161–1188.
... a subsurface basement fault. On the assumption that the beginning of activity along the Nye-Bowler lineament marked the start of Laramide tectonic activity in the Beartooth Mountain block, it is believed that, in the vicinity of Nye, the Laramide orogeny began during the deposition of the Judith River...
FIGURES | View All (7)
Journal Article
Published: 01 May 2019
Rocky Mountain Geology (2019) 54 (1): 19–32.
... in the pre-1000-Ma age group, but younger Albian- and Campanian-age sandstones have mostly Grenville-age zircon grains. New data from the Albian Beartooth Quartzite indicate syndepositional volcanic grains at 102 Ma and support correlations with the Mojado Formation rather than the younger Dakota Sandstone...
FIGURES | View All (5)
Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2013
DOI: 10.1306/13381691St653570
EISBN: 9781629812632
... Mountains, Big Snowy Mountains, and Beartooth Mountains) also reveal local, structurally controlled, conjugate fracture trends that are parallel or perpendicular to the structural axis. Using curvature analysis on the interpreted 3-D seismic data, local fracture patterns are also observed within...
FIGURES | View All (14)
Journal Article
Published: 23 February 2011
Canadian Journal of Earth Sciences (2011) 48 (2): 161–185.
... ( Mueller et al. 2004 ) and evidence of Neoarchean thermotectonic activity at ca. 2800 Ma (Beartooth Orogeny; Mueller and Wooden 1988 ; Dahl and Hamilton 2002 ; Mueller et al. 2004 ). Subsequently, the region was affected by at least two major Paleoproterozoic thermotectonic events at ∼2470–2450 Ma...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 November 1965
AAPG Bulletin (1965) 49 (11): 1801–1823.
.... Locally, volcanic debris is very abundant in the Colorado Group, and strong increase in thickness westward attests to further encroachment of geosynclinal downwarping onto the cratonic margin. Laramide orogeny began in the Montana area coincident with deposition of the Eagle-Claggett and correlative units...
FIGURES | View All (17)
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