Tectonic loading and subsidence of intermontane basins: Wyoming foreland province

Hagen, E. Sven; Shuster, Mark W.; Furlong, Kevin P.

doi:10.1130/0091-7613(1985)13<585:tlasoi>2.0.co;2

Cited by 42 publications

(27 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparisons of the modelled profiles with observed data indicated a 'best fit' lithospheric rigidity of approximately 10 22 Nm. Hagen, Shuster & Furlong (1985) used the same methodology to model the nearby Big Horn Basin, and proposed that the origin of many of the intermontane basins within the Wyoming Foreland Province could be attributed to tectonic loading and concomitant flexure. Most recently, Hall & Chase (1989) used 2-D flexural and gravity modelling to further suggest that the Wind River uplift is not locally isostatically compensated and hence flexurally supported.…”

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 97%

“…However, there is little evidence to suggest that the lower crust and upper mantle parts of the lithosphere are broken or detached across a fault or fault zone. Hagen, Shuster & Furlong (1985) postulated that the Green River Basin is a hybrid case where a broken elastic plate (upper lithosphere) overlies a continuous plate (lower lithosphere). Hall & Chase (1989) used a hybrid-case lithospheric model to explain the postLaramide uplift in the core of the Wind River Range proposed by Steidtmann, Middleton & Shuster (1989).…”

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

“…Late Cretaceous through early Eocene loading by this eastward-vergent thrusting along the western margin of the Green River Basin should be incorporated in any model for the basin (e.g. Hagen, Shuster & Furlong, 1985;Shuster & Steidtmann, 1988).…”

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

“…Thus, both Law (1984) and Tang, Lerche & Cogan (1990) ignored the modelling work described in the list of citations above. Hagen, Shuster & Furlong (1985) further utilized a 2-D flexural model to calculate both the present day-deflection of the top of the Mesaverde Formation and the maximum stratal thickness which would have infilled the basin assuming instantaneous uplift and adequate sediment supply. Comparisons of the modelled profiles with observed data indicated a 'best fit' lithospheric rigidity of approximately 10 22 Nm.…”

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

See 3 more Smart Citations

Discussion on elastic flexure with compressive thrusting of the Green River Basin, Wyoming, U.S.A.

1991

View full text Add to dashboard Cite

Although we commend the authors for attempting to use a horizontally loaded flexural model to better understand the tectonic evolution of the Green River Basin, we are dismayed by the authors' complete lack of attention to both the geology of the Green River Basin-Wind River Range subsidence-uplift couple and to modelling work already completed and published. Some mention of these is needed in order to put the significance of the work by Tang, Lerche and Cogan (1990) into appropriate perspective. In particular: (1) at least two previous flexural models for subsidence of the Green River Basin have been published but were not mentioned, evaluated, or compared to their own modelling by the authors; and (2) many of the 'Implications of the model results' and 'Conclusions' are either really not implied by the results, are contrary to observations of the geologic record of the area (with no discussion of the apparent contradiction), or both. We discuss these below.

show abstract

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 97%

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

Section: Previous Flexural Models Of the Green River Basinmentioning

confidence: 99%

See 2 more Smart Citations

Discussion on elastic flexure with compressive thrusting of the Green River Basin, Wyoming, U.S.A.

1991

View full text Add to dashboard Cite

show abstract

“…These basins developed by flexure of the lithosphere in response to loading from the thrust or reverse fault-bounded uplifts (Hagen et al, 1985;Beck et al, 1988), and the sediments in these basins record the timing of activity on the bounding faults. These Laramide-style basins display strongly asymmetric subsidence in response to loading from the thrustbounded uplifts (Beck et al, 1988), and subsidence is greatest adjacent to the loading uplift.…”

Section: Introductionmentioning

confidence: 99%

Concurrent growth of uplifts with dissimilar orientations in the southern Green River Basin, Wyoming: Implications for Paleocene-Eocene patterns of foreland shortening

Johnson

Andersen

2009

Rocky Mountain Geology

View full text Add to dashboard Cite

The diverse orientations of Precambrian-involved and fault-bounded uplifts in the Rocky Mountain foreland region seem difficult to reconcile with the inferred Paleocene-Eocene shortening direction and plate convergence. Some have hypothesized that the shortening direction rotated as much as 90° over time, whereas others have hypothesized a relatively stable strain field involving concurrent oblique slip on faults with varied strikes.The stratigraphic thicknesses of the synorogenic Paleocene-Eocene Fort Union, Wasatch, and Green River Formations in the southern Green River Basin of Wyoming are used here to define the pattern of basin subsidence and to interpret the timing of movement on two contractional structures with contrasting orientations. Isopach maps and cross sections of three sequential time-stratigraphic intervals show thinning around the north-south-oriented Rock Springs uplift and regional southward thickening of these three stratigraphic intervals. The southward thickening evidently resulted from flexural subsidence in response to loading from the adjacent east-west-oriented Uinta uplift. Stratigraphic thinning in the vicinity of the Rock Springs uplift demonstrates that growth of the underlying blind thrust system produced an area of comparatively low accommodation space within the subsiding Green River Basin.The concurrent growth of the Rock Springs and Uinta uplifts does not support a rotation of shortening direction from east-west to north-south. The margin of a Neoproterozoic rift basin may have controlled the orientation of the thrust faults bounding the north flank of the Uinta uplift, and Late Cretaceous-throughEocene contraction caused oblique slip on these faults during structural inversion. A north-south-striking blind reverse fault underlies the west flank of the Rock Springs uplift, but Phanerozoic strata cover the Precambrian core of the uplift, so the structure within the Archean basement rocks is unknown. Despite contrasting strikes and different structural histories, the Uinta and Rock Springs uplifts responded concurrently to northeast-southwest-to east-northeast-west-southwest-directed shortening.

show abstract

Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

2014

View full text Add to dashboard Cite

Low-angle subduction of the Farallon oceanic plate during the Late Cretaceous-early Eocene is generally considered as the main driver forming the high Rocky Mountains in Wyoming and nearby areas. How the deformation was transferred from mantle to upper crust over the great duration of deformation (~40 Myr) is still debated. Here, we reconstruct basin subsidence and compile paleoelevation, thermochronology, and provenance data to assess the timing, magnitude, and rates of rock uplift during the Laramide deformation. We reconstruct rock uplift as the sum of surface uplift and erosion constrained by combining paleoelevation and exhumation with regional stratigraphic thickness and chronostratigraphic information. The amount (and rate) of rock uplift of individual Laramide ranges was less than 2.4-4.8 km (~0.21-0.32 mm/yr) during the early Maastrichtian-Paleocene (stage 1) and increased to more than~3 km (~0.38-0.60 mm/yr) during the late Paleocene-early Eocene (stage 2). Our quantitative constraints reveal a two-stage development of the Laramide deformation in Wyoming and an increase of rock uplift during stage 2, associated with enhanced intermontane basin subsidence. Exhumation and uplift during stage 1 is consistent with eastward migration of Cordilleran deformation associated with low-angle subduction, whereas the change in exhumation during stage 2 seems to follow a southwestward trend, which requires an alternative explanation. We here suggest that the increase of rock uplift rate during the late Paleocene-early Eocene and the southwestward younging trend of uplift may be a response to the rollback and associated retreating delamination of the Farallon oceanic slab.

show abstract

Tectonic loading and subsidence of intermontane basins: Wyoming foreland province

Cited by 42 publications

References 0 publications

Discussion on elastic flexure with compressive thrusting of the Green River Basin, Wyoming, U.S.A.

Discussion on elastic flexure with compressive thrusting of the Green River Basin, Wyoming, U.S.A.

Concurrent growth of uplifts with dissimilar orientations in the southern Green River Basin, Wyoming: Implications for Paleocene-Eocene patterns of foreland shortening

Late Cretaceous–early Eocene Laramide uplift, exhumation, and basin subsidence in Wyoming: Crustal responses to flat slab subduction

Contact Info

Product

Resources

About