Kinematic history of a foreland uplift from Paleocene synorogenic conglomerate, Beartooth Range, Wyoming and Montana

DeCelles, Peter G.; Gray, Mary Beth; Ridgway, Kenneth D.; Cole, Ronald B.; Srivastava, Praveen; Pequera, N.; Pivnik, David A.

doi:10.1130/0016-7606(1991)103<1458:khoafu>2.3.co;2

Cited by 156 publications

(120 citation statements)

References 0 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…The kinematic model is presented in 6 different steps, in which the initial one corresponds to the restored cross section at the K/T boundary around 65.5 Ma. The subsequent stages of the model have been constrained by crosscutting relationships between thrusts and well dated syntectonic deposits [e.g., Jordan et al, 1988;DeCelles et al, 1991;Vergés et al, 2002]. A synthetic regional section has been constructed just before the K/T boundary to reproduce the most likely configuration of the region with the Bahía Honda unit internally deformed by imbricate thrusting in front of the Great Caribbean arc (Figure 11).…”

Section: Kinematic Evolution Of the Western Cuba Fold And Thrust Beltmentioning

confidence: 99%

Structural and tectonic evolution of western Cuba fold and thrust belt

et al. 2008

View full text Add to dashboard Cite

We present balanced and restored cross sections across the western Cuba fold and thrust belt to illustrate its structure and tectonic evolution, based on the interpretation of multichannel seismic profiles, field data and balancing techniques. The NNW–SSE trending Soroa cross section intersects, from south to north, (1) the Los Palacios Basin, (2) the Sierra del Rosario antiformal stack, (3) the Bahía Honda thrust unit, (4) the frontal ∼3‐km‐thick imbricated thrust sheets, and (5) the foredeep basin. At depth, a duplex that links the Sierra del Rosario unit and the frontal imbricates is defined using the thickness of the cover thrust sheets of the imbricated North American margin. The minimum calculated shortening is of 130 km in a SSE or south direction to fit large‐scale plate tectonic reconstructions. However, a more allochthonous alternative using thinner cover sequences is also discussed, which restores the Bahía Honda unit 220 km to the south of its present position. Syntectonic deposits in combination with a forward kinematic model provide a good constraint for the tectonic evolution of the orogen. The internally deformed Bahía Honda unit overthrusted the North America margin cover successions during Danian and Selandian times (∼65.5–60 Ma), before the stacking of these cover rocks during Selandian and Thanetian times (∼60–56 Ma). The growth of a large antiformal stack beneath the Sierra del Rosario occurred at early middle Eocene (∼56–45 Ma), generating about 4 km of structural relief between the paleoisland of Cuba and the synorogenic seafloor before the final infill of the foredeep.

show abstract

Section: Kinematic Evolution Of the Western Cuba Fold And Thrust Beltmentioning

confidence: 99%

Structural and tectonic evolution of western Cuba fold and thrust belt

et al. 2008

View full text Add to dashboard Cite

show abstract

“…The pattern of post-Laramide relief is reconstructed by (1) analyzing the magnitude of mid-to-late Cenozoic deposition in basins, which records the reduction of regional relief; (2) projecting the maximum elevation of preserved basin fill deposits to reconstruct a reference surface, or envelope map, that coincides with the transition from net accumulation to net degradation; and (3) calculating the difference between the reference surface and the modern topography in order to map the magnitude of late Cenozoic incision across the entire region. This study builds on an approach taken by Pederson et al based on the depth to which preserved paleovalleys cut into an Eocene datum (referred to as the Eocene erosion surface or Rocky Mountain surface; Chapin and Kelley, 1997;Steven et al, 1997;Evanoff, 1990;Mears, 1993) and late Laramide structural and unroofing histories that suggest topographic relief of 1.5-3 km (DeCelles, et al, 1991;Hoy and Ridgway, 1997). After deformation ceased and throughout most of the middle Cenozoic, relief was progressively reduced by erosion of highlands and accumulation of predominantly fine-grained, tuffaceous fluvial and eolian sediments within the relict basins (Fig.…”

Section: Introductionmentioning

confidence: 99%

History and causes of post-Laramide relief in the Rocky Mountain orogenic plateau

McMillan

Heller

Wing

2006

Geological Society of America Bulletin

152

153

View full text Add to dashboard Cite

The Rocky Mountain orogenic plateau has the highest mean elevation and topographic relief in the contiguous United States. The mean altitude exceeds 2 km above sea level and relief increases from 30 m in the river valleys of the Great Plains to more than 1.6 km deep in the canyons and basins of the Rocky Mountains and Colorado Plateau. Despite over a century of study, the timing and causes of elevation gain and incision in the region are unclear. Post-Laramide development of relief is thought to either result from tectonic activity or climatic change. Interpretation of which of these causes dominated is based upon reconstruction of datums developed from, and supported by, paleoelevation proxies and interpretations of landscape incision. Here we reconstruct a datum surface against which regional incision can be measured in order to evaluate late Cenozoic tectonic and climatic influences. The distribution, magnitude, and timing of post-Laramide basin filling and subsequent erosion are constrained by depositional remnants, topographic markers, and other indicators across the region. We suggest that post-Laramide basin filling resulted from slow subsidence during Oligocene to Miocene time. Incision into this basin fill surface began in late Miocene time and continues today. The pattern of incision is consistent with control by localized extensional tectonism superimposed upon regional domal surface uplift. Localized extension r E-mail: memcmillan@ualr.edu. 'E-mail: heller@uwyo.edu. ^E-mail: wing.scott@nmnh.si.edu.is associated with the projection of the Rio Grande Rift into the central Rockies, and the domal uplift generally coincides with the position of buoyant mantle anomalies interpreted at depth. If the magnitudes of incision directly reflect magnitudes of surface elevation gain, they are less than can be resolved by existing paleoelevation proxy methods. In addition, the combination of post-Laramide subsidence followed by regional surface uplift reduces the net magnitude of surface elevation change since Laramide time.

show abstract

“…Imperative to accurate collection and application of these proxy data is an understanding of the lateral and vertical relationships between strata and time in the rock record. To address this need, chronostratigraphic models have been developed and applied to marine (Vail et al, 1977;Van Wagoner et al, 1988), lacustrine (Bohacs et al, 2000;Keighley et al, 2003), fluvial (Shanley and McCabe, 1994;Currie, 1997), deltaic (Gani and Bhattacharya, 2005) and alluvial-fan strata (DeCelles et al, 1991a;Bourquin et al, 1998;Weissmann et al, 2002). Despite the elegance and utility of these models, they have only rarely been subjected to the test of independent geochronologic analysis (e.g., Vail et al, 1977;Behrensmeyer and Tauxe, 1982;Zechun et al, 1998;Prothero, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Ancient alluvial-fan strata have been used to interpret climatic, plate tectonic, structural and autocyclic phenomena (Schumm et al, 1987;DeCelles et al, 1991a;Fraser and DeCelles, 1992;Burbank et al, 1992;Weissmann et al, 2002) and to develop influential theoretical sedimentary models (Heller et al, 1988;Blair and Bilodeau, 1988;DeCelles et al, 1991b;DeCelles and Mitra, 1995;Brozovíc and Burbank, 2000;.…”

Section: Introductionmentioning

confidence: 99%

“…This correlation technique, which is also widely applied in the collection of other proxy data from alluvial-fan and other sedimentary rocks, exploits lithostratigraphic markers that are believed to have chronostratigraphic significance. Despite elegant depositional models for alluvial-fan chronostratigraphy (Schumm et al, 1987;DeCelles et al, 1991a;Weissmann et al, 2002), the validity of this assumption remains largely untested.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The diachroneity of alluvial-fan lithostratigraphy? A test case from southeastern Ebro basin magnetostratigraphy

Swanson‐Hysell

Barbeau

2007

Earth and Planetary Science Letters

View full text Add to dashboard Cite

Alluvial-fan strata contain valuable proxy data for kinematic, climatic and sediment-flux phenomena associated with high-relief source regions. Proper application of this data is dependent upon acquisition of accurate high-resolution chronostratigraphic data, best achieved through magnetostratigraphy. Collection of magnetostratigraphic and other proxy data from composite alluvial-fan sections assumes the chronostratigraphic significance of lithostratigraphy. We present the first test of this assumption with new magnetostratigraphy collected from Paleogene rocks of the southeastern Ebro basin. We report five new magnetostratigraphic sections that collectively sample 850 m of alluvial-fan and associated fluvial strata. One-hundred meters of lithostratigraphic overlap between these sections reveals equivalent magnetic polarities over short along-strike distances (∼200-2000 m). However, lithostratigraphic correlation of these sections with the magnetostratigraphy of continuously exposed strata eight km away reveals discrepancies in magnetic polarity trends and age interpretations.Correlation of our 760 m composite magnetostratigraphic section with the Paleogene geomagnetic polarity time scale suggests that this section spans from ca. 31.3 to 27.7 Ma (C12r-C9n; early to late Oligocene). This correlation implies steady sedimentation rates of ∼12 cm/ka for fluvial facies and ∼32 cm/ka for alluvial-fan facies. Alternative interpretations that force chronostratigraphic correlation with the lithostratigraphically equivalent interval generate unsteady and/or unlikely sedimentation rates in one or both of the stratigraphies and require rejection of multiple well-constrained polarity zones. The absence of significant surfaces of erosion or paleosol development argue against these alternative interpretations and suggest that even in the best exposed study areas, alluvial-fan successions may be diachronous and preclude lateral extrapolation of chronostratigraphic and other proxy data. Interpretations and models based upon data collected from alluvial-fan strata may be tenuous unless supported by sufficient spatial overlap to constrain the relationship between time surfaces and rock surfaces.

show abstract

Kinematic history of a foreland uplift from Paleocene synorogenic conglomerate, Beartooth Range, Wyoming and Montana

Cited by 156 publications

References 0 publications

Structural and tectonic evolution of western Cuba fold and thrust belt

Structural and tectonic evolution of western Cuba fold and thrust belt

History and causes of post-Laramide relief in the Rocky Mountain orogenic plateau

The diachroneity of alluvial-fan lithostratigraphy? A test case from southeastern Ebro basin magnetostratigraphy

Contact Info

Product

Resources

About