Basement composition and basin geometry controls on upper-crustal deformation in the Southern Central Andes (30–36°S)

Mescua, José; Giambiagi, Laura; Barrionuevo, Matías; Tassara, Andrés Ollero; Mardónez, Diego; Mazzitelli, Manuela Amelia; Lossada, Ana Clara

doi:10.1017/s0016756816000364

Cited by 21 publications

(29 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latter modified the composition of the basement resulting in an average andesitic composition with lower bulk density and slow velocities in the lower crust [116].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

“…(2) The Cuyania terrane, which is a Laurentia-derived terrane with Grenvillian metamorphic rocks of predominantly mafic composition in the upper crust and a more felsic lower crust [116].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

“…The cross-section of Figure 12A is based on [44,[116][117][118][119] and complemented using the geological map of Chile [120]. Igneous rocks of Permian to Cenozoic magmatic arcs conceal the deep structure of the Coast Cordillera.…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

See 2 more Smart Citations

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

View full text Add to dashboard Cite

This paper gives an overview of the large-scale tectonic styles encountered in orogens worldwide. Thin-skinned and thick-skinned tectonics represents two end member styles recognized in mountain ranges. A thick-skinned tectonic style is typical for margins of continental plates. Thick-skinned style including the entire crust and possibly the lithospheric mantle are associated with intracontinental contraction. Delamination of subducting continental crust and horizontal protrusion of upper plate crust into the opening gap occurs in the terminal stage of continent-continent collision. Continental crust thinned prior to contraction is likely to develop relatively thin thrust sheets of crystalline basement. A true thin-skinned type requires a detachment layer of sufficient thickness. Thickness of the décollement layer as well as the mechanical contrast between décollement layer and detached cover control the style of folding and thrusting within the detached cover units. In subduction related orogens, thin-and thick-skinned deformation may occur several hundreds of kilometers from the plate contact zone. Basin inversion resulting from horizontal contraction may lead to the formation of basement uplifts by the combined reactivation of pre-existing normal faults and initiation of new reverse faults. In composite orogens thick-skinned and thin-skinned structures evolve with a pattern where nappe stacking propagates outward and downward.

show abstract

“…The latter modified the composition of the basement resulting in an average andesitic composition with lower bulk density and slow velocities in the lower crust [116].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

“…(2) The Cuyania terrane, which is a Laurentia-derived terrane with Grenvillian metamorphic rocks of predominantly mafic composition in the upper crust and a more felsic lower crust [116].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

See 1 more Smart Citation

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

View full text Add to dashboard Cite

show abstract

“…The latter modified the composition of the basement resulting in an average andesitic composition with lower bulk density and slow velocities in the lower crust [123].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

“…(2) The Cuyania terrane, which is a Laurentia-derived terrane with Grenvillian metamorphic rocks of predominantly mafic composition in the upper crust and a more felsic lower crust [123].…”

Section: Sierras Pampeanas Of Argentinamentioning

confidence: 99%

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

View full text Add to dashboard Cite

This paper gives an overview of the large-scale tectonic styles encountered in orogens worldwide. Thin-skinned and thick-skinned tectonics represent two end member styles recognized in mountain ranges. Both styles are encountered in former passive margins of continental plates. Thick-skinned style including the entire crust and possibly the lithospheric mantle are associated with intracontinental contraction. Delamination of subducting continental crust and horizontal protrusion of upper plate crust into the opening gap occurs in the terminal stage of continent-continent collision. Continental crust thinned prior to contraction is likely to develop relatively thin thrust sheets of crystalline basement. A true thin-skinned type requires a detachment layer of sufficient thickness. Thickness of the décollement layer as well as the mechanical contrast between décollement layer and detached cover control the style of folding and thrusting within the detached cover units. In subduction-related orogens, thin-and thick-skinned deformation may occur several hundreds of kilometers from the plate contact zone. Basin inversion resulting from horizontal contraction may lead to the formation of basement uplifts by the combined reactivation of pre-existing normal faults and initiation of new reverse faults. In most orogens thick-skinned and thin-skinned structures both occur and evolve with a pattern where nappe stacking propagates outward and downward.

show abstract

Tectono-Stratigraphic Evolution of the Atuel Depocenter During the Late Triassic to Early Jurassic Rift Stage, Neuquén Basin, West-Central Argentina

Bechis

Giambiagi

Tunik

et al. 2020

Opening and Closure of the Neuquén Basin in the Southern Andes

Self Cite

View full text Add to dashboard Cite

The Neuquén Basin presents an almost continuous record from the Late Triassic until the Paleocene, making it an excellent case study of the most relevant tectonic stages of southern South America during the Mesozoic. It was initiated in Late Triassic to Early Jurassic times as a continental rift basin in the context of a widespread extensional stage that affected western Gondwana and culminated with the break-up of the supercontinent. The Atuel depocenter is located in the northern sector of the Neuquén Basin. Its synrift and sag units are represented by Upper Triassic to Lower Jurassic siliciclastic marine and continental sedimentary rocks including the oldest marine deposits of the basin, of Late Triassic age. The depocenter infill has been deformed and exhumed during the Andean orogeny, being presently exposed in the northern sector of the Malargüe fold and thrust belt. In this review, we have integrated a large set of stratigraphic, sedimentologic, geochronologic, and structural data in order to unravel the tectono-sedimentary evolution of the Atuel depocenter and to evaluate the main controlling factors of the synrift stage. We analyzed data from the synrift units, such as facies and thickness distribution, sandstone provenance, detrital zircon geochronology data, kinematic data from outcrop-scale normal faults, F. Bechis (B)

show abstract

Basement composition and basin geometry controls on upper-crustal deformation in the Southern Central Andes (30–36°S)

Cited by 21 publications

References 73 publications

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Tectono-Stratigraphic Evolution of the Atuel Depocenter During the Late Triassic to Early Jurassic Rift Stage, Neuquén Basin, West-Central Argentina

Contact Info

Product

Resources

About