Fault chronology and uplift history of the southern Wind River Range, Wyoming: Implications for Laramide and post-Laramide deformation in the Rocky Mountain foreland

Steidtmann, James R.; Middleton, Larry T.

doi:10.1130/0016-7606(1991)103<0472:fcauho>2.3.co;2

Cited by 72 publications

(82 citation statements)

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“…13-35, 10 figs., July, 2001 the Late Cretaceous-early Tertiary Laramide orogeny. Steidtmann and Middleton (1991) noted that many of the northern Laramide-style uplifts in the northern Rockies were initiated in the mid Cretaceous, including the Wind River Mountains, Bighorn Mountains, Rock Springs uplift, Sweetwater uplift, and Hartville uplift. A mid-Cretaceous initiation for tectonism also is inferred from southwestern Montana, based on partitioning of uplifts andbasins (e.g., Schwartz and DeCelles, 1988).…”

Section: Discussion Introductionmentioning

confidence: 99%

Lithospheric buckling of the Laramide foreland during Late Cretaceous and Paleogene, western United States

Tikoff

Maxson

2001

Rocky Mountain Geology

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Foreland deformation, in the form of arches or uplifts, occurred throughout the eastern Rocky Mountains region during the Laramide orogeny . Arches with the same structural style developed in the mid-continent region, east of the Rocky Mountains, although these were subsequently buried by Tertiary sedimentary rocks. We attribute deformation in the Rocky Mountain foreland and continental interior to folding of the entire lithosphere (lithospheric buckling) as a result of horizontal endload on the western edge of North America. The observed wavelength of arches in the western United States is ca. 190 km, a spacing consistent with a lithospheric buckling interpretation. This buckling model provides a mechanical explanation for the distinction between "thin-skinned Sevier-style and "thick-skinned" Laramide-style deformation, which depends respectively upon the decoupling or coupling of lithospheric layers. Additionally, the buckling model explains concurrent tectonism east of the Rocky Mountains during Late Cretaceous time. Dextral shearing within the block uplifts indicates that the deformation was broadly transpressional during the Laramide orogeny.

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Section: Discussion Introductionmentioning

confidence: 99%

Lithospheric buckling of the Laramide foreland during Late Cretaceous and Paleogene, western United States

Tikoff

Maxson

2001

Rocky Mountain Geology

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“…This indicates a significant segregation of these two components. Previous work [39][40][41][42] has suggested that the reservoir was simultaneously charged with two fluids of different compositions about 50 million years ago. The first fluid was almost pure CO 2 (90%) while the second one was CH 4 rich with a significant amount of CO 2 (40%).…”

Section: Natural Gas Field Example: Labargementioning

confidence: 99%

Analytical solution for compositional profile driven by gravitational segregation and diffusion

2017

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An improved analytical solution is presented, based on irreversible thermodynamics, that describes the equilibrium distribution of the components of a non-ideal fluid mixture in an 1D, hydrostatic and isothermal system. In such a system, the vertical compositional profile of the fluid at equilibrium will be determined by the interaction of gravitational and chemical potentials. The new analytical solution estimates this profile from the overall composition of the fluid. It is thus more general than the existing solution which requires a knowledge of the fluid composition at a given depth and assumes that the vertical compositional profile of this fluid is already at equilibrium. The solution is demonstrated by comparison against results obtained from previously published molecular dynamics simulations of segregation in a binary mixture and against numerical simulations of a real hydrocarbon reservoir system.-1 -

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“…Intraplate thrusts are responsible for the uplift of large areas of the continental crust and the re-arrangement of continental segments through significant horizontal displacements (e.g., Smithson et al 1978;Erslev 1986;Steidtmann and Middleton 1991;Avouac et al 1993;Zheng et al 1998;Kley and Voigt 2008;Fernández-Lozano et al 2011;Coubal et al 2014;Seillé et al 2015 and references therein). The accurate determination of transport directions and displacements of intraplate thrusts is a major issue in plate tectonics reconstruction, especially when displacements are relevant in relation to plate size, as it occurs in Iberia (see De Vicente 2004;Fernández-Lozano 2012 and references therein).…”

Section: Introductionmentioning

confidence: 99%

Multidisciplinary approach to constrain kinematics of fault zones at shallow depths: a case study from the Cameros–Demanda thrust (North Spain)

Sáinz

Román‐Berdiel

Oliva‐Urcia

et al. 2016

Int J Earth Sci (Geol Rundsch)

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Thrusting at shallow depths often precludes analysis by means of structural indicators effective in other geological contexts (e.g., mylonites, sheath folds, shear bands). In this paper, a combination of techniques (including structural analysis, magnetic methods, as anisotropy of magnetic susceptibility and paleomagnetism, and paleothermometry) is used to define thrusting conditions, deformation, and transport directions in the Cameros–Demanda thrust (North Spain). Three outcrops were analyzed along this intraplate, large-scale major structure having 150 km of outcropping length, 30 km of maximum horizontal displacement, and 5 km of vertical throw. Results obtained by means of the different techniques are compared with data derived from cross sections and stratigraphic analysis. Mixed-layer illite–smectite and vitrinite reflectance indicating deep diagenetic conditions and mature stage of hydrocarbon generation suggests shallow depths during deformation, thus confirming that the protolith for most of the fault rocks is the footwall of the main thrust. Kinematic indicators (foliation, S/C structures, and slickenside striations) indicate altogether a dominant NNW movement of the hanging wall in the western zone and NE in the eastern zone of the thrust, thus implying strain partitioning between different branches of the main thrust. The study of AMS in fault rocks (nearly 400 samples of fault gouge, breccia, and microbreccia) indicates that the strike of magnetic foliation is oblique to the transport direction and that the magnetic lineation parallelizes the projection of the transport direction onto the kmax/kint plane in sites with strong shear deformation. Paleomagnetism applied to fault rocks indicates the existence of remagnetizations linked to thrusting, in spite of the shallow depth for deformation, and a strong deformation or scattering of the magnetic remanence vectors in the fault zone. The application of the described techniques and consistency of results indicate that the proposed multidisciplinary approach is useful when dealing with thrusts at shallow crustal levels

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Fault chronology and uplift history of the southern Wind River Range, Wyoming: Implications for Laramide and post-Laramide deformation in the Rocky Mountain foreland

Cited by 72 publications

References 0 publications

Lithospheric buckling of the Laramide foreland during Late Cretaceous and Paleogene, western United States

Lithospheric buckling of the Laramide foreland during Late Cretaceous and Paleogene, western United States

Analytical solution for compositional profile driven by gravitational segregation and diffusion

Multidisciplinary approach to constrain kinematics of fault zones at shallow depths: a case study from the Cameros–Demanda thrust (North Spain)

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