Results 11 to 20 of about 35,897 (307)

Rheological transitions in the middle crust: insights from Cordilleran metamorphic core complexes [PDF]

Solid Earth, 2017
High-strain mylonitic rocks in Cordilleran metamorphic core complexes reflect ductile deformation in the middle crust, but in many examples it is unclear how these mylonites relate to the brittle detachments that overlie them.
F. J. Cooper, J. P. Platt, W. M. Behr
doaj   +6 more sources

Interactions of plutons and detachments: a comparison of Aegean and Tyrrhenian granitoids [PDF]

Solid Earth, 2021
Back-arc extension superimposed on mountain belts leads to distributed normal faults and shear zones interacting with magma emplacement within the crust.
L. Jolivet, L. Arbaret, L. Arbaret, L. Arbaret, L. Le Pourhiet, F. Cheval-Garabédian, F. Cheval-Garabédian, F. Cheval-Garabédian, V. Roche, A. Rabillard, A. Rabillard, A. Rabillard, L. Labrousse   +12 more
doaj   +1 more source

Kinematics and Geochronology of Late Paleozoic–Early Mesozoic Ductile Deformation in the Alxa Block, NW China: New Constraints on the Evolution of the Central Asian Orogenic Belt

Lithosphere, 2021
Strike-slip faults are widely developed throughout the Central Asian Orogenic Belt (CAOB), one of the largest Phanerozoic accretionary orogenic collages in the world, and may have played a key role in its evolution. Recent studies have shown that a large
Beihang Zhang, Jin Zhang, Heng Zhao, Junfeng Qu, Yiping Zhang, Pengfei Niu, Jie Hui, Long Yun   +7 more
doaj   +1 more source

Strain Partitioning along Terrane Bounding and Intraterrane Shear Zones: Constraints from a Long-Lived Transpressional System in West Gondwana (Ribeira Belt, Brazil)

Lithosphere, 2022
Shear zones are zones of localized high strain accommodating differential motion in the lithosphere and impacting the crustal rheology and deformational history of orogenic belts.
F. M. Faleiros, B. V. Ribeiro, G. A. C. Campanha, P. A. Cawood, D. I. G. Cabrita, M. T. A. G. Yogi, L. A. Milani, D. V. Lemos-Santos, V. V. Almeida, S. W. O. Rodrigues, I. S. Malta, A. J. Forero-Ortega   +11 more
doaj   +1 more source

Variation of Deformation Conditions of Zagros Suture Zone between Baneh and Shahrekord Areas, Iran [PDF]

Journal of Sciences, Islamic Republic of Iran, 2023
Suture zones within continental collision zones generally considered as deep-seated thick-skinned thrusts/shear zones rotted in lower crust. Main Zagros Revers Fault (MZRF) is the suture zone for continental collision between the Afro-Arabia and Eurassia
Fatemeh Ghahremani, Ali Yassaghi
doaj   +1 more source

$\mbox {}^{40}$Ar/$\mbox {}^{39}$Ar geochronology of crustal deformation

Comptes Rendus. Géoscience, 2023
Crustal deformation is characterized by brittle and ductile faults that accommodate at different scales the strain imposed by plate tectonics. The aim of this contribution is to show with the help of different examples how the in situ $\mbox {}^{40}$Ar/$\
Monié, Patrick, Münch, Philippe, Milesi, Gaétan, Bonno, Michael, Iemmolo, Arthur   +4 more
doaj   +1 more source

A likely geological record of deep tremor and slow slip events from a subducted continental broken formation

Scientific Reports, 2022
Fluids in subduction zones play a key role in controlling seismic activity, drastically affecting the rheology of rocks, triggering mineral reactions, and lowering the effective stress.
Francesco Giuntoli, Giulio Viola
doaj   +1 more source

Deep ductile shear localization facilitates near-orthogonal strike-slip faulting in a thin brittle lithosphere [PDF]

, 2020
Some active fault systems comprise near-orthogonal conjugate strike-slip faults, as highlighted by the 2019 Ridgecrest and the 2012 Indian Ocean earthquake sequences.
Ampuero, Jean-Paul, Liang, Chao, Pino Muñoz, Daniel   +2 more
core   +1 more source

Geophysical evidence of pre-sag rifting and post-rifting fault reactivation in the Parnaíba basin, Brazil [PDF]

Solid Earth, 2016
This study investigated the rifting mechanism that preceded the prolonged subsidence of the Paleozoic Parnaíba basin in Brazil and shed light on the tectonic evolution of this large cratonic basin in the South American platform.
D. L. de Castro, F. H. Bezerra, R. A. Fuck, R. M. Vidotti   +3 more
doaj   +1 more source

What comes first: The fault or the ductile shear zone?

Earth and Planetary Science Letters, 2022
Crustal scale fault zones extend below the brittle-ductile transition as ductile shear zones. Here we address the question of which regime, brittle or ductile, initiates and controls the overall system of shear localization. Observations of crustal scale but low displacement conjugate strike-slip faults show that they are typically nearly orthogonal ...
Christopher H. Scholz, Eunseo Choi
openaire   +2 more sources