scholarly journals Late Cretaceous Uplift in the Malargüe fold-and-thrust belt (35ºS), southern Central Andes of Argentina and Chile

2013 ◽  
Vol 40 (1) ◽  
Author(s):  
Jose Francisco Mescua ◽  
Laura Beatriz Giambiagi ◽  
Victor Alberto Ramos
Keyword(s):  
Late Cretaceous ◽  
Central Andes ◽  
Thrust Belt ◽  
Fold And Thrust Belt ◽  
Southern Central

FEEDBACKS BETWEEN MAGMATISM AND STRESS AND STRAIN FIELDS IN THE MALARGüE FOLD AND THRUST BELT, SOUTHERN CENTRAL ANDES (34º-36ºS)

2017 ◽  
Author(s):  
José F. Mescua ◽  
◽  
Laura Giambiagi ◽  
Laura Giambiagi ◽  
Patricia Sruoga ◽  
...  
Keyword(s):  
Central Andes ◽  
Stress And Strain ◽  
Thrust Belt ◽  
Strain Fields ◽  
Fold And Thrust Belt ◽  
Southern Central

Neogene to Quaternary extensional reactivation of a fold and thrust belt: The Agrio belt in the Southern Central Andes and its relation to the Loncopué trough (38°–39°S)

2010 ◽  
Vol 492 (1-4) ◽  
pp. 279-294 ◽  
Author(s):  
Emilio A. Rojas Vera ◽  
Andrés Folguera ◽  
Gonzalo Zamora Valcarce ◽  
Mario Giménez ◽  
Francisco Ruiz ◽  
...  
Keyword(s):  
Central Andes ◽  
Thrust Belt ◽  
Fold And Thrust Belt ◽  
Southern Central

Neotectonic reactivation of the western section of the Malargüe fold and thrust belt (Tromen volcanic plateau, Southern Central Andes)

Geomorphology ◽  
2015 ◽  
Vol 232 ◽  
pp. 164-181 ◽  
Author(s):  
Lucía Sagripanti ◽  
Emilio A. Rojas Vera ◽  
Guido M. Gianni ◽  
Andrés Folguera ◽  
Jonathan E. Harvey ◽  
...  
Keyword(s):  
Central Andes ◽  
Thrust Belt ◽  
Fold And Thrust Belt ◽  
Southern Central

Geochemical and tectonic evolution of Late Cretaceous to early Paleocene magmatism along the Southern Central Andes (35-36°S)

2018 ◽  
Vol 87 ◽  
pp. 139-156 ◽  
Author(s):  
Sofía B. Iannelli ◽  
Lucas M. Fennell ◽  
Vanesa D. Litvak ◽  
Lucía Fernández Paz ◽  
Alfonso Encinas ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Tectonic Evolution ◽  
Central Andes ◽  
Early Paleocene ◽  
Southern Central

Inversion tectonics, intracontinental fold-and-thrust belts and complex stress fields in central Europe: the history of the Franconian Basin revealed by paleostress analysis, geological maps and field observations.

2020 ◽  
Author(s):  
Saskia Köhler ◽  
Florian Duschl ◽  
Hamed Fazlikhani ◽  
Daniel Köhn
Keyword(s):  
Stress Field ◽  
Late Cretaceous ◽  
Complex Stress ◽  
Strike Slip ◽  
Stress Fields ◽  
Thrust Belt ◽  
Slip Regime ◽  
Geological Maps ◽  
Fold And Thrust Belt ◽  
Paleostress Analysis

<p>The Franconian Basin in SE Germany has seen a complex stress history indicative of several extensional and compressional phases e.g. the Iberia-Europe collision acting on a pre-faulted Variscan basement. Early Cretaceous extension is followed by Late Cretaceous inversion with syntectonic sedimentation and deformation increasing progressively from SW to NE culminating in the Franconian Line where basement rocks are thrusted over the Mesozoic cover. The development of this intracontinental fold-and-thrust belt is followed by Paleogene extension associated with the formation of the Eger Graben, which is then succeeded by a new compressional event as a consequence of the Alpine orogeny.</p><p>We use existing data from literature and geological maps and new field data to construct balanced cross-sections in order to reveal the architecture of the Cretaceous fold-and-thrust belt. In addition, we undertake paleostress analysis using a combination of fault slip information, veins and tectonic and sedimentary stylolites to identify stress events in the study area, as well as their nature and timing. Furthermore, we try to understand how basement faults influence younger faults in the cover sequence.</p><p>Our paleostress data indicates that at least five different stress events existed in Mesozoic to Cenozoic times (from old to young): (1) an N-S directed extensional stress field with E-W striking normal faults, (2) a NNE-SSW directed compressional stress field causing thrusting and folding of the cover sequence, (3) a strike slip regime with NE-SW compression and NW-SE extension, (4) an extensional event with NW-SE extension and the formation of ENE-WSW striking faults according to the formation of the Eger Graben in the E, and finally (5) a strike slip regime with NW-SE compression and NE-SW extension related to Alpine stresses. The geometry of faulting and deformation varies significantly over the regions with respect to the influence of and distance to inherited Variscan structures.</p><p>We argue that the extensional event of stress field (1) provides spacing for Early Cretaceous sedimentation in the Franconian Basin. This is followed by the creation of an intracontinental fold-and-thrust belt during stress fields (2) and (3) with a slight rotation of the main compressive stress during these events in Late Cretaceous. We associate the following extension to the development of the Eger Graben in Miocene time. Finally, a NW-SE directed compression related to Alpine stresses in an intracontinental strike-slip regime is following. Reconstruction of the Cretaceous fold-and-thrust belt reveals mainly fault propagation folding with deep detachments sitting below the cover sequence indicating thick-skinned tectonics. We argue that the Franconian Line is a thrust with a steeply dipping root that belongs to the same fold-and-thrust belt.</p>

Sign in / Sign up

Export Citation Format

Share Document