Three-dimensional retro-deformation of the Lechtal Nappe, Northern Calcareous Alps

Tanner, David C.; Behrmann, Jan H.; Dresmann, Horst

doi:10.1016/s0191-8141(02)00057-3

Cited by 27 publications

(17 citation statements)

References 19 publications

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“…The general structural architecture is simple: a steep, overturned, almost isoclinal syncline was identified (Fig. 9), in good agreement with earlier observations on the Karwendel syncline (Eisbacher and Brandner 1996;Linzer et al 1995;Tanner et al 2003), although the tight character of the fold has not been emphasised before.…”

Section: Structural Observations In the Karwendel Synclinesupporting

confidence: 88%

“…1). The Karwendel syncline forms a Paleogene fault propagation fold (Tanner et al 2003) in the Lechtal nappe, which in turn is part of the upper Bavaric unit (or nappe system) in the western Northern Calcareous Alps (Tollmann 1976b). Deformation is constrained to anchimetamorphic conditions as a maximum (less than 200 °C) as defined by illite crystallinity data (Kralik et al 1987).…”

Section: Geological Settingmentioning

confidence: 99%

“…Based on the asymmetry of outcrop scale folds and taking the general setting of the Karwendel syncline into account (Fig. 9), south to north tectonic transport directions can be inferred in accordance with the regional tectonic evolution (Linzer et al 1995;Schmid et al 2004;Tanner et al 2003).…”

Section: Interpretation Semibrittle Deformationmentioning

confidence: 99%

“…Thus, brittle faulting occurred both before, after and most likely also during the Paleogene folding phase GSSP (Tanner et al 2003) which produced the overturned Karwendel syncline.…”

Section: Ages Of Brittle Faultingmentioning

confidence: 99%

See 3 more Smart Citations

Structural complexity at and around the Triassic–Jurassic GSSP at Kuhjoch, Northern Calcareous Alps, Austria

Palotai

Pálfy²,

Sasvári

2017

Int J Earth Sci (Geol Rundsch)

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Section: Structural Observations In the Karwendel Synclinesupporting

confidence: 88%

Section: Geological Settingmentioning

confidence: 99%

Section: Interpretation Semibrittle Deformationmentioning

confidence: 99%

“…Thus, brittle faulting occurred both before, after and most likely also during the Paleogene folding phase GSSP (Tanner et al 2003) which produced the overturned Karwendel syncline.…”

Section: Ages Of Brittle Faultingmentioning

confidence: 99%

See 2 more Smart Citations

Structural complexity at and around the Triassic–Jurassic GSSP at Kuhjoch, Northern Calcareous Alps, Austria

Palotai

Pálfy²,

Sasvári

2017

Int J Earth Sci (Geol Rundsch)

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“…The construction of 2-D balanced sections has evolved into a key technique in the analysis of contractional tectonics (e.g., DAHLSTROM 1969DAHLSTROM , 1990COOPER and TRAYNER 1986;DEPAOR 1988;WU et al 2005; TANassumed. The analysis of fold-and-thrust belts in map view (e.g., AFFOLTER and GRATIER 2004) and 3-D (e.g., TANNER et al 2003, SALA et al 2014) also underwent considerable progress in the last decades. A 3-D approach integrates lateral geometric variations obtained from map and depth views into the cross section-based structural restoration (TANNER et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Kinematic 3-D Retro-Modeling of an Orogenic Bend in the South Limón Fold-and-Thrust Belt, Eastern Costa Rica: Prediction of the Incremental Internal Strain Distribution

Brandes

Tanner

Winsemann

2016

Pure Appl. Geophys.

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The South Limón fold-and-thrust belt, in the backarc area of southern Costa Rica, is characterized by a 90°curvature of the strike of the thrust planes and is therefore a natural laboratory for the analysis of curved orogens. The analysis of curved foldand-thrust belts is a challenge because of the varying structural orientations within the belt. Based on seismic reflection lines, we created a 3-D subsurface model containing three major thrust faults and three stratigraphic horizons. 3-D kinematic retro-deformation modeling was carried out to analyze the spatial evolution of the fold-and-thrust belt. The maximum amount of displacement on each of the faults is (from hinterland to foreland); thrust 1: 800 m; thrust 2: 600 m; thrust 3: 250 m. The model was restored sequentially to its pre-deformational state. The strain history of the stratigraphic horizons in the model was calculated at every step. This shows that the internal strain pattern has an abrupt change at the orogenic bend. Contractional strain occurs in the forelimbs of the hanging-wall anticlines, while a zone of dilative strain spreads from the anticline crests to the backlimbs. The modeling shows that a NNE-directed transport direction best explains the structural evolution of the bend. This would require a left-lateral strike-slip zone in the North to compensate for the movement and thereby decoupling the South Limón fold-and-thrust belt from northern Costa Rica. Therefore, our modeling supports the presence of the Trans-Isthmic fault system, at least during the Plio-Pleistocene.

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Paleogeography and Architecture of the Alpine Tethys Margins

LAGABRIELLE

2024

Geodynamics of the Alps 2

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Three-dimensional retro-deformation of the Lechtal Nappe, Northern Calcareous Alps

Cited by 27 publications

References 19 publications

Structural complexity at and around the Triassic–Jurassic GSSP at Kuhjoch, Northern Calcareous Alps, Austria

Structural complexity at and around the Triassic–Jurassic GSSP at Kuhjoch, Northern Calcareous Alps, Austria

Kinematic 3-D Retro-Modeling of an Orogenic Bend in the South Limón Fold-and-Thrust Belt, Eastern Costa Rica: Prediction of the Incremental Internal Strain Distribution

Paleogeography and Architecture of the Alpine Tethys Margins

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