Active tectonics in the Sierra Nevada (Betic Cordillera, SE Spain): Insights from geomorphic indexes and drainage pattern analysis

Geomorphology ◽  
2010 ◽  
Vol 119 (1-2) ◽  
pp. 74-87 ◽  
Author(s):  
José Vicente Pérez-Peña ◽  
Antonio Azor ◽  
José Miguel Azañón ◽  
Edward A. Keller
Author(s):  
J. M. Azañón ◽  
J. V. Pérez-Peña ◽  
F. Giaconia ◽  
G. Booth-Rea ◽  
J. M. Martínez-Martínez ◽  
...  

Solid Earth ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 1125-1142
Author(s):  
David J. Anastasio ◽  
Frank J. Pazzaglia ◽  
Josep M. Parés ◽  
Kenneth P. Kodama ◽  
Claudio Berti ◽  
...  

Abstract. The anisotropy of magnetic susceptibility (AMS) technique provides an effective way to measure fabrics and, in the process, interpret the kinematics of actively deforming orogens. We collected rock fabric data of alluvial fan sediments surrounding the Sierra Nevada massif, Spain, and a broader range of Cenozoic sediments and rocks across the Northern Apennine foreland, Italy, to explore the deformation fabrics that contribute to the ongoing discussions of orogenic kinematics. The Sierra Nevada is a regional massif in the hinterland of the Betic Cordillera. We recovered nearly identical kinematics regardless of specimen magnetic mineralogy, structural position, crustal depth, or time. The principal elongation axes are NE–SW in agreement with mineral lineations, regional GPS geodesy, and seismicity results. The axes trends are consistent with the convergence history of the Africa–Eurasia plate boundary. In Italy, we measured AMS fabrics of specimens collected along a NE–SW corridor spanning the transition from crustal shortening to extension in the Northern Apennines. Samples have AMS fabrics compatible only with shortening in the Apennine wedge and have locked in penetrative contractional fabrics, even for those samples that were translated into the actively extending domain. In both regions, we found that specimens have a low degree of anisotropy and oblate susceptibility ellipsoids that are consistent with tectonic deformation superposed on compaction fabrics. Collectively, these studies demonstrate the novel ways that AMS can be combined with structural, seismic, and GPS geodetic data to resolve orogenic kinematics in space and time.


2021 ◽  
Author(s):  
David J. Anastasio ◽  
Frank J. Pazzaglia ◽  
Josep M. Parés ◽  
Kenneth P. Kodama ◽  
Claudio Berti ◽  
...  

Abstract. The anisotropy of magnetic susceptibility (AMS) technique provides an effective way to measure fabrics and in the process, interpret the kinematics of actively deforming orogens. We collected rock fabric data of alluvial fan sediments surrounding the Sierra Nevada massif, Spain, and a broader range of Cenozoic sediments and rocks across the northern Apennine foreland, Italy, to explore the deformation fabrics that contribute to the ongoing discussions of orogenic kinematics. Sierra Nevada is a regional massif in the hinterland of the Betic Cordillera. We recovered nearly identical kinematics regardless of specimen magnetic minerology, structural position, crustal depth, or time. The principal elongation axes are NE-SW in agreement with mineral lineations, regional GPS geodesy, and seismicity results. The axes trends are consistent with the convergence history of the Africa-Eurasia plate boundary. In Italy, we measured AMS fabrics of specimens collected along a NE-SW corridor spanning the transition from crustal shortening to extension in the northern Apennines. Samples have AMS fabrics compatible only with shortening in the Apennine wedge and have locked in penetrative contractional fabrics, even for those samples that were translated into the actively extending domain. In both regions we found that specimens have a low degree of anisotropy and oblate susceptibility ellipsoids that are consistent with tectonic deformation superposed on compaction fabrics. Collectively, these studies demonstrate the novel ways that AMS can be combined with structural, seismic, and GPS geodetic data to resolve orogenic kinematics in space and time.


2012 ◽  
Vol 38 (1) ◽  
Author(s):  
M.A. Rodríguez-Pascua ◽  
R. Pérez-López ◽  
V.H. Garduño-Monroy ◽  
J.L. Giner-Robles ◽  
P.G. Silva ◽  
...  

Anthropocene ◽  
2021 ◽  
Vol 33 ◽  
pp. 100278
Author(s):  
Francisca Alba-Sánchez ◽  
Daniel Abel-Schaad ◽  
José Antonio López-Sáez ◽  
Silvia Sabariego-Ruiz ◽  
Sebastián Pérez-Díaz ◽  
...  

1989 ◽  
Vol 3 (1) ◽  
pp. 17-36 ◽  
Author(s):  
Encarnacion Puga ◽  
Antonio Diaz De Federico ◽  
Giuseppe Maria Bargossi ◽  
Lauro Morten
Keyword(s):  

2002 ◽  
Vol 186 (3-4) ◽  
pp. 337-349 ◽  
Author(s):  
P Alfaro ◽  
J Delgado ◽  
A Estévez ◽  
J.M Soria ◽  
A Yébenes
Keyword(s):  

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