The thermal and rheological state of the Northern Argentinian foreland basins
Dissertation, Universität Potsdam, 2019
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| Format: | UnknownFormat |
| Sprache: | eng |
| Veröffentlicht: |
Potsdam
2019
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| Schlagworte: |
Hochschulschrift
> Argentinien
> Zentralanden
> Lithosphäre
> Tektonik
> Becken
> Deformation
> Modellierung
> Paläotektonik
> Vorland
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Tag hinzufügen | Zusammenfassung: | Dissertation, Universität Potsdam, 2019 The foreland of the Andes in South America is characterised by distinct along strike changes in surface deformational styles. These styles are classified into two end-members, the thin-skinned and the thick-skinned style. The superficial expression of thin-skinned deformation is a succession of narrowly spaced hills and valleys, that form laterally continuous ranges on the foreland facing side of the orogen. Each of the hills is defined by a reverse fault that roots in a basal décollement surface within the sedimentary cover, and acted as thrusting ramp to stack the sedimentary pile. Thick-skinned deformation is morphologically characterised by spatially disparate, basement-cored mountain ranges. These mountain ranges are uplifted along reactivated high-angle crustal-scale discontinuities, such as suture zones between different tectonic terranes. Amongst proposed causes for the observed variation are variations in the dip angle of the Nazca plate, variation in sediment thickness, lithospheric thickening, volcanism or compositional differences. [...] |
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| Beschreibung: | xviii, 151 Seiten Illustrationen, Diagramme |