Region of overlap and styles of interaction of Cordilleran thrust belt and Rocky Mountain foreland

Kulik, D.M.; Schmidt, Christopher J.

doi:10.1130/mem171-p75

Cited by 39 publications

(35 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lowell (1983), Brown (1988), Kulik and Schmidt (1988), Verrall (1989), and Oldow and others (1989) proposed hanging-wall shortening above a subhorizontal detachment in the lower crust. In contrast to the dominance of thrusting in these models, Fletcher (1984) explained the eastward-increasing spacing between ranges as a consequence of multilayer buckling.…”

Section: Two-dimensional Tectonic Modelsmentioning

confidence: 99%

“…Because both thrust-belt and Laramide structures were active during Late Cretaceous to Eocene time (Hunter, 1988;Perry and others, 1988), differences in their structural trends and styles cannot be solely a function of timing. Kulik and Schmidt (1988) argued that this coincidence in time and space indicates a shared mechanism of horizontal compression, with variations in crustal heterogeneity causing the differences in structural style. This hypothesis does not, however, address differences in the attitude of Laramide and Cordilleran structures.…”

Section: Two-dimensional Tectonic Modelsmentioning

confidence: 99%

“…Unfortunately, "uplift" places primary emphasis on the vertical rise of Laramide structures, whereas their horizontal translation is clearly of larger magnitude (Hunch and Smithson, 1982;Blackstone 1983Blackstone , 1986Blackstone , 1990bBlackstone , 1991Gries, 1983aGries, , 1983bBrewer and others, 1982;Kulik and Schmidt, 1988;Stone, 1985a, this volume;Williams and others, 1990). In addition, the concept of isolated "uplifts" describes only poorly the actual structural geometry of Laramide structures.…”

Section: Anastomosing Laramide Arches Not Upliftsmentioning

confidence: 99%

See 2 more Smart Citations

Thrusts, back-thrusts, and detachment of Rocky Mountain foreland arches

Erslev

1993

Geological Society of America Special Papers

View full text Add to dashboard Cite

The basement geometry of the central Rocky Mountains provides a critical test for Laramide tectonic models. On a large scale, Laramide structural highs are better described as anastomosing, connected arches than as individual "uplifts." Thrust and reverse faults on the margins of Laramide arches dip both under and away from the ranges. Structural modeling shows that faults dipping toward the basins are commonly backthrusts off master thrusts which underlie and bring up the arches. These master thrusts alternate between emergent thrusts with major basement overhangs and blind thrusts below imbricate back thrusts.The northwest-trending average orientations of Laramide faults, folds, and arches suggest northeast-southwest-directed slip over the entire province. The continuity of Laramide arches suggests direct linkages between underlying northeast-and southwestdirected master thrusts. Basement rotations and geophysical evidence for a continuous crust-mantle interface in Wyoming indicate that these master faults are listric, and merge in a subhorizontal detachment in the lower crust. Southwest-directed faults like the Wind River thrust are probably backthrusts off the northeast-directed detachment. West-and north-trending sections of basement arches probably form by oblique slip on lateral ramps connecting the northwest-trending arch culminations.The minimal penetrative strain and the variety of fault styles at the surface in the Laramide foreland indicate that horizontal compression on a mid-crustal stress guide drives Laramide crustal shortening and detachment. Unlike shortening in the coeval Cordilleran thrust belt, Laramide shortening parallels the plate convergence vector and may reflect increased interaction between the North American and Farallon plates during low-angle oblique subduction. PREVIOUS TECTONIC HYPOTHESESTectonic hypotheses for the Laramide orogeny of the central Rocky Mountains were delayed by the lack of an immediately proximal plate margin and the popularity of erroneous vertical uplift models during the 1970s. Dickinson and Snyder (1978) noticed the coincidence of the eastern migration of arc volcanism and the initiation of Laramide deformation in the western United Beartooth Mts.

show abstract

Section: Two-dimensional Tectonic Modelsmentioning

confidence: 99%

Section: Two-dimensional Tectonic Modelsmentioning

confidence: 99%

Section: Anastomosing Laramide Arches Not Upliftsmentioning

confidence: 99%

See 1 more Smart Citation

Thrusts, back-thrusts, and detachment of Rocky Mountain foreland arches

Erslev

1993

Geological Society of America Special Papers

View full text Add to dashboard Cite

show abstract

“…A thick succession of Upper Jurassic through lower Eocene strata ( Figure 2) is fully involved in the deformation (De Cserna, 1971;Eguiluz de Antuñano, 2001;Gray et al, 2001), indicating a minimum early Cenozoic age for the contractional deformation. This timing is coeval with the latter part of the Laramide and Sevier events in the western United States (Craddock et al, 1988, Kulik andSchmidt 1988;Lawton and Trexler, 1991;Lawton et al, 1993). The style of deformation in the Mexican cordillera is predominantly thin-skinned, similar to the Sevier orogen in the U.…”

Section: Introductionmentioning

confidence: 99%

New constraints on timing of Hidalgoan (Laramide) deformation in the Parras and La Popa basins, NE Mexico

Gray

Lawton

2011

BSGM

View full text Add to dashboard Cite

The Parras and La Popa basins of northeastern Mexico together contain at least three separate types of structures that were active during Maastrichtian through Early Eocene time. These structures include salt diapirs and salt welds, E-W trending anticlines detached within the Campanian Parras shale, and large NW-SE trending anticlines detached within the Jurassic salt layers. The oldest halokinetic structure, the La Popa salt weld, began to form by Late Aptian time. This structure is parallel to the later NW-SE contractional folds, but it pre-dates regional contraction. The earliest dated contractional structures in the Sierra Madre Oriental are E-W trending folds and faults found east of the La Popa syncline. These structures were active only briefly during the deposition of the lower Maastrichtian Muerto Formation. Very similar east-west structures in the northern Parras Basin contain growth strata of upper Maastrichtian and Paleocene age. Folding of upper Paleocene beds indicates that this shortening continued into the Eocene. Very Large amplitude NW-SE trending anticlines in La Popa Basin also formed due to regional contraction, and they clearly re-fold the shallow-detached E-W set. Regional evidence suggests that all contractional deformation ceased around 40 Ma. Salt withdrawal may have continued after the cessation of contractional deformation. The contractional deformation in these basins is similar in structural style to the Sevier orogen in the U. S. A., but it is later and of shorter duration than the Sevier orogeny; it is time-equivalent to the Laramide orogeny, but it differs significantly from the Laramide structural style. Thus, the Mexican orogenic system differs from the U. S. A. orogens. This uniqueness was recognized by Guzmán and De Cserna (1963)

show abstract

“…Foreland basement highs are known to act as obstacles and create bends in thrust belts globally. In the Rocky Mountain foreland, interference structures are heavily influenced by the interplay between basement structures and thrusting (Kulik and Schmidt, 1988). Numerous studies conducted have shown pre-thrusting stratigraphic thinning also interacts with basement structures (Montgomery, 1993, Paulsen andMarshak, 1999).…”

Section: Comparable Case Studiesmentioning

confidence: 99%

Pre-Permian basement and lithological controls on the development of the Jellinbah Thrust Belt: Insight from a new palinspastic reconstruction

Haisley¹

View full text Add to dashboard Cite

This project attempts to interpret the structural architecture within the system in this part of the Bowen Basin using a palinspastic restoration (essentially restoring the stratigraphy to its pre-deformed state) in order to establish the magnitude of faulting that has taken place within the Jellinbah Thrust Belt. By estimating the major thrust fault movements, we can understand how the basement and stratigraphy influenced the mechanics of the fault system. The morphology of the Carboniferous metasediments and igneous units that form the basement in the Jellinbah Thrust Belt appear to have had an impact on the localisation of strain.Seismic data from the 2007 Dingonose acquisition (07-DNG-01, 07-DNG-02 and 07-DNG-08) were depth converted using velocity picks in SKUA TM software. Well data were used to confirm the accuracy of the depth conversion and to estimate stratigraphic boundaries that were traced as horizon reflectors in the seismic data. The fault pattern was manually interpreted based on discontinuities in the 2D seismic. Due to the complexity of the faulting within the regions, conceptual models focussed on the large scale and easily discernible structures. In some instances intensive deformation resulting in a lack of homogeneity in the acoustic impedance or poor quality seismic data produced areas of increased uncertainty. Using the Move TM software allowed for manipulation of the interpretation andii various scenarios to be tested. It provided useful analytical tools and accurate empirical measurements to describe and quantify the kinematics of the Jellinbah Thrust Belt. Finally a kinematic reconstruction to restore displaced stratigraphic units to their position prior to faulting was performed in the software.The palinspastic interpretation suggests that the compressional phase of the HunterBowen Orogeny consisted of multiple shortening episodes that were, in some instances, syn-depositional. Inversion of earlier normal faults, slump structures possibly related to the rifting phase observed in the Denison Trough were interpreted near the base of the Basin.The amount of shortening and fault angle permitted the calculation of the burial depth of the late Permian coal measures, with an estimated depth, for the current stratigraphy, of 2.0 km to 2.4 km. Basement high features identified in section 07-DNG-01 act as obstructions to compression, focussing larger reverse displacements in this part of the fault system. Flattening of the basement high to the south-east resulted in less confinement of stresses on specific faults and a more even distribution of displacement within the fault system. Localised dextral transpressional strike-slip displacements incurring out-of section plane movements are also suggested to be a result of the basement morphology.

show abstract

Region of overlap and styles of interaction of Cordilleran thrust belt and Rocky Mountain foreland

Cited by 39 publications

References 0 publications

Thrusts, back-thrusts, and detachment of Rocky Mountain foreland arches

Thrusts, back-thrusts, and detachment of Rocky Mountain foreland arches

New constraints on timing of Hidalgoan (Laramide) deformation in the Parras and La Popa basins, NE Mexico

Pre-Permian basement and lithological controls on the development of the Jellinbah Thrust Belt: Insight from a new palinspastic reconstruction

Contact Info

Product

Resources

About