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Medicine Peak Quartzite

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Journal Article
Journal: Geology
Published: 01 October 1983
Geology (1983) 11 (10): 618–619.
Journal Article
Published: 01 December 1963
Journal of Sedimentary Research (1963) 33 (4): 938–943.
...Donald R. Lamb; Robert B. Johnson Abstract Natural percussion cones are found on cobbles and boulders of quartzite of the Medicine Peak Quartzite (Precambrian) in Wyoming. Similar cones have been duplicated in the laboratory on cobbles of Medicine Peak Quartzite and on pieces of plate...
Journal Article
Published: 01 April 1962
Rocky Mountain Geology (1962) 1 (1): 21–29.
... and are characterized by pronounced "knob-and-kettle" topography and tills rich in crystalline constituents. More recent deposits at the base of Medicine Bow Peak, W. of the source of Libby Creek, have been considered by some workers as recent moraines, but are more likely protalus ramparts overlying latest Pinedale...
Journal Article
Published: 12 January 2007
Canadian Journal of Earth Sciences (2006) 43 (10): 1557–1577.
.... The depositional environment and age of the Bridger Peak quartzite are uncertain ( Houston et al. 1992 ). The Bridger Peak quartzite is correlated with the Conical Peak quartzite of the Medicine Bow Mountains (Fig.  3 ), which is interpreted to be deposited in a fluvial to shallow-marine environment ( Houston et...
FIGURES
First thumbnail for: In suspect terrane? Provenance of the late Archean...
Second thumbnail for: In suspect terrane? Provenance of the late Archean...
Third thumbnail for: In suspect terrane? Provenance of the late Archean...
Journal Article
Published: 01 April 1962
Rocky Mountain Geology (1962) 1 (1): 48.
...Brainerd Mears Abstract Periglacial polygons, 100 ft. above timberline, are restricted to soil in an alpine meadow on a diorite dike which cuts massive quartzite weathering to felsenmeer. The nets appear inactive because of lichen-covered surface blocks, a distinctive "A" soil horizon, deeply...
Journal Article
Published: 01 January 2006
The Journal of Geology (2006) 114 (1): 19–42.
... of the Rocky Mountains experiment). 40 Ar/ 39 Ar and U-Pb data define age patterns in the Sierra Madre that are delineated by discrete structures. North of the 1.78-Ga Divide Peak mylonite zone, a foreland structure associated with the Medicine Bow orogeny, 40 Ar/ 39 Ar biotite dates suggest cooling below 300...
FIGURES
First thumbnail for: Filling the North American Proterozoic Tectonic Ga...
Second thumbnail for: Filling the North American Proterozoic Tectonic Ga...
Third thumbnail for: Filling the North American Proterozoic Tectonic Ga...
Journal Article
Journal: Geosphere
Published: 27 October 2023
Geosphere (2023) 19 (6): 1565–1588.
... for the Medicine Lodge thrust, suggesting that the thrust cut across a large, pre-thrust fold in Mesoproterozoic quartzites, hence cutting locally down-section in the direction of transport ( Ruppel, 1994 ). Alternatively, the Fritz Creek and Medicine Lodge thrusts may represent two distinct ramps that branch off...
FIGURES
First thumbnail for: A kinematic model linking the Sevier and Laramide ...
Second thumbnail for: A kinematic model linking the Sevier and Laramide ...
Third thumbnail for: A kinematic model linking the Sevier and Laramide ...
Journal Article
Published: 01 January 2011
Rocky Mountain Geology (2011) 46 (2): 111–135.
... in the Medicine Bow Mountains of southeastern Wyoming. These shear zones are generally interpreted as a mid-crustal thrust system rotated to its present-day subvertical orientation during late-stage, orogen-scale folding. However, the map geometry, presence of large domains of S tectonites, and vertical mineral...
FIGURES
First thumbnail for: Testing the transpression hypothesis in the wester...
Second thumbnail for: Testing the transpression hypothesis in the wester...
Third thumbnail for: Testing the transpression hypothesis in the wester...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1950
AAPG Bulletin (1950) 34 (9): 1826–1849.
...John L. Severson ABSTRACT A southeastward-plunging synclinal mountain ridge, capped by Mississippian rocks, rises from a base of Cambrian rocks in the Sunwapta Pass area. Detailed sections involving Silurian and Devonian rocks were studied from the Nigel Peak area on the north southward...
FIGURES
First thumbnail for: Devonian Stratigraphy, Sunwapta Pass Area, Alberta...
Second thumbnail for: Devonian Stratigraphy, Sunwapta Pass Area, Alberta...
Third thumbnail for: Devonian Stratigraphy, Sunwapta Pass Area, Alberta...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2013
GSA Bulletin (2013) 125 (7-8): 1319–1337.
..., and deformation mechanism analyses of the northern mylonite zone of the eastern Medicine Bow Mountains. Mylonites of this zone record a complex deformation history, but the main deformation phase was sinistral/northwest-side-up oblique transpression. Evidence for southeast-side-up, dip-slip motion...
FIGURES
First thumbnail for: A new view of an old suture zone: Evidence for sin...
Second thumbnail for: A new view of an old suture zone: Evidence for sin...
Third thumbnail for: A new view of an old suture zone: Evidence for sin...
Journal Article
Published: 01 November 2003
The Journal of Geology (2003) 111 (6): 639–652.
... quartz veins commonly cut the gneiss and Proterozoic quartzite but are unknown in the Phanerozoic rocks of the upper Medicine Lodge Valley, although silicic shear zones and jasperoid are common. The black fine-grained, biotite-rich matrix in sample KT92-153a comprises about 30% of the rock; sample...
FIGURES
First thumbnail for: The Mesoproterozoic Beaverhead Impact Structure an...
Second thumbnail for: The Mesoproterozoic Beaverhead Impact Structure an...
Third thumbnail for: The Mesoproterozoic Beaverhead Impact Structure an...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1983
AAPG Bulletin (1983) 67 (5): 725–743.
... ( Fig. 1 ) as well as a number of small-displacement normal faults northeast of Lima. Fig. 2 —Relation of thickness of (a) Meade Peak and (b) Retort Members of Phosphoria Formation (Permian) to Medicine Lodge, Tendoy, and Snowcrest-Greenhorn thrust-fault systems in southwestern Montana. Isopachs...
FIGURES
First thumbnail for: Structure, Burial History, and Petroleum Potential...
Second thumbnail for: Structure, Burial History, and Petroleum Potential...
Third thumbnail for: Structure, Burial History, and Petroleum Potential...
Journal Article
Published: 01 August 1977
Bulletin of Canadian Petroleum Geology (1977) 25 (4): 736–751.
... Clapp and Deiss, 1931 Nelson and Dobell, 1961 McNamara Formation Mount Shields Formation McNamaro Formation Red Plume Banner Banner Banner Quartzite Quartzite Quartzite Quartzite Helena Formation Mount Shields Formation Shields Formation Shepard Shepard Shepard Shepard Miller Peak Quartzite Formation...
Journal Article
Journal: GSA Bulletin
Published: 13 October 2023
GSA Bulletin (2024) 136 (5-6): 2460–2482.
... suggests that it differs from northern-bounding terranes. Viewed more broadly, the 2.7 Ga and 1.7 Ga age peaks that the Montana metasedimentary terrane shares with the global zircon age spectrum suggest that the drivers of these events in the Montana metasedimentary terrane were common throughout the Earth...
FIGURES
First thumbnail for: Growth and evolution of Neoarchean–Paleoproterozoi...
Second thumbnail for: Growth and evolution of Neoarchean–Paleoproterozoi...
Third thumbnail for: Growth and evolution of Neoarchean–Paleoproterozoi...
Journal Article
Published: 10 October 2003
Canadian Journal of Earth Sciences (2003) 40 (10): 1357–1374.
... subprovince, and two Archean terrains that may be allochthonous to the 3.0 Ga craton, (4) the Sierra Madre – Medicine Bow block, and (5) the Black Hills – Hartville block. A thick, fast lower crustal layer, imaged by Deep Probe, corresponds geographically with the Bighorn subprovince and may be an underplate...
FIGURES
First thumbnail for: Early Archean to Mesoproterozoic evolution of the ...
Second thumbnail for: Early Archean to Mesoproterozoic evolution of the ...
Third thumbnail for: Early Archean to Mesoproterozoic evolution of the ...
Journal Article
Journal: Geology
Published: 01 May 2000
Geology (2000) 28 (5): 439–442.
.... Downstream, it skirted the southern end of the Carmen culmination and crossed the northern part of the Maiden Peak basement-cored culmination before occupying a longitudinal valley in the footwall of the Medicine Lodge thrust south of segment A. The Hawley Creek paleoriver flowed farther to the south...
FIGURES
First thumbnail for: Long-distance longitudinal transport of gravel acr...
Second thumbnail for: Long-distance longitudinal transport of gravel acr...
Third thumbnail for: Long-distance longitudinal transport of gravel acr...
Journal Article
Journal: AAPG Bulletin
Published: 01 November 1975
AAPG Bulletin (1975) 59 (11): 2079–2098.
... Pennsylvanian age consists of variegated chert-pebble conglomerate, brown quartzite, and minor amounts of gray limestone. Detritus composing this formation was derived from uplands of the Antler orogenic belt in central Nevada. In the Pequop Mountains the Diamond Peak Formation is approximately 1,200 ft (366 m...
FIGURES
First thumbnail for: Late Pennsylvanian and Early Permian Sedimentation...
Second thumbnail for: Late Pennsylvanian and Early Permian Sedimentation...
Third thumbnail for: Late Pennsylvanian and Early Permian Sedimentation...
Journal Article
Journal: GSA Bulletin
Published: 01 January 2016
GSA Bulletin (2016) 128 (1-2): 94–109.
... and the Medicine Hat block, why don’t we see ages of magmatism more closely aligned with the record of metamorphism, which presumably reflects crustal thickening during collision? The difference between the 1.86 Ga magmatism and the peak of metamorphism has been previously recognized (e.g., Foster et al...
FIGURES
First thumbnail for: Neoarchean and Paleoproterozoic crystalline baseme...
Second thumbnail for: Neoarchean and Paleoproterozoic crystalline baseme...
Third thumbnail for: Neoarchean and Paleoproterozoic crystalline baseme...
Journal Article
Published: 01 January 2013
Rocky Mountain Geology (2013) 48 (2): 73–99.
... and reflect left-lateral, strike-slip displacement. Folds just southeast of the Laramie Peak shear zone, with ages for syndeformational titanite growth in fold hinge areas ranging from 1755–1740 Ma, provide strong evidence for renewed shortening and continuation of the Medicine Bow Orogeny...
FIGURES
First thumbnail for: Paleoproterozoic transpressional shear zone, easte...
Second thumbnail for: Paleoproterozoic transpressional shear zone, easte...
Third thumbnail for: Paleoproterozoic transpressional shear zone, easte...
Journal Article
Published: 30 November 2006
Canadian Journal of Earth Sciences (2006) 43 (10): 1391–1397.
... lithosphere appear to be much more fertile for later melting than the adjacent Archean lithosphere, as exemplified by Cretaceous and younger magmatism and mineralization being largely confined to the Great Falls tectonic zone, rather than adjoining Archean lithosphere of either the Medicine Hat block...
FIGURES
First thumbnail for: The Wyoming Province: a distinctive Archean craton...