The central Fuegian fold and thrust belt in Tierra del Fuego: Strike‐slip tectonics superimposed onto compressional deformation

2020 ◽  
Vol 55 (9) ◽  
pp. 6079-6097
Author(s):  
Jorge G. Lozano ◽  
Donaldo M. Bran ◽  
Javier I. Peroni ◽  
Emanuele Lodolo ◽  
Marco Menichetti ◽  
...  
Keyword(s):  
Strike Slip ◽  
Tierra Del Fuego ◽  
Thrust Belt ◽  
Fold And Thrust Belt ◽  
Compressional Deformation

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>

scholarly journals Quaternary slip-rates of the Kazerun and the Main Recent Faults: active strike-slip partitioning in the Zagros fold-and-thrust belt

2009 ◽  
Vol 178 (1) ◽  
pp. 524-540 ◽  
Author(s):  
Christine Authemayou ◽  
Olivier Bellier ◽  
Dominique Chardon ◽  
Lucilla Benedetti ◽  
Zaman Malekzade ◽  
...  
Keyword(s):  
Strike Slip ◽  
Thrust Belt ◽  
Slip Rates ◽  
Fold And Thrust Belt ◽  
Slip Partitioning

scholarly journals Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear Zone

2010 ◽  
Vol 61 (6) ◽  
pp. 483-493 ◽  
Author(s):  
Márton Palotai ◽  
László Csontos
Keyword(s):  
Shear Zone ◽  
Seismic Data ◽  
Tectonic Evolution ◽  
Strike Slip ◽  
3D Seismic ◽  
Thrust Belt ◽  
Clockwise Rotation ◽  
Fold And Thrust Belt ◽  
Detailed Interpretation ◽  
3D Seismic Data

Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear ZoneRecently shot 3D seismic data allowed for a detailed interpretation, aimed at the tectonic evolution of the central part of the Mid-Hungarian Shear Zone (MHZ). The MHZ acted as a NW vergent fold and thrust belt in the Late Oligocene. The intensity of shortening increased westwards, causing clockwise rotation of the western regions, relatively to the mildly deformed eastern areas. Blind thrusting and related folding in the MHZ continued in the Early Miocene. Thrusting and gentle folding in the MHZ partly continued in the earliest Pannonian, and was followed by sinistral movements in the whole MHZ, with maximal displacement along the Tóalmás zone. Late Pannonian inversion activated thrusts and generated transpressional movements along the Tóalmás zone.

KINEMATICS OF THE COLUMBIA HILLS ANTICLINE AND THE WARWICK STRIKE-SLIP FAULT, YAKIMA FOLD AND THRUST BELT, WASHINGTON, USA

2019 ◽  
Author(s):  
Danielle N. Woodring ◽  
◽  
Andrew Meigs ◽  
Marina Marcelli ◽  
Jim E. O'Connor ◽  
...  
Keyword(s):  
Strike Slip ◽  
Strike Slip Fault ◽  
Thrust Belt ◽  
Fold And Thrust Belt

Combining shallow and deep geophysical information: the Yehuin–Chepelmut Fault Zone in the Magallanes fold and thrust belt (Tierra del Fuego, Argentina)

2020 ◽  
Vol 109 (3) ◽  
pp. 971-994
Author(s):  
Jorge G. Lozano ◽  
Alejandro Tassone ◽  
Donaldo M. Bran ◽  
Luciano Onnis ◽  
Emanuele Lodolo ◽  
...  
Keyword(s):  
Fault Zone ◽  
Tierra Del Fuego ◽  
Thrust Belt ◽  
Fold And Thrust Belt ◽  
Geophysical Information

THE SIGNIFICANCE OF STRIKE-SLIP FAULTING IN THE BASEMENT OF THE ZAGROS FOLD AND THRUST BELT

2001 ◽  
Vol 24 (1) ◽  
pp. 5-28 ◽  
Author(s):  
K. Hessami ◽  
H. A. Koyi ◽  
C. J. Talbot
Keyword(s):  
Strike Slip ◽  
Thrust Belt ◽  
Fold And Thrust Belt
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