Results 51 to 60 of about 1,254,333 (184)

Crustal mechanics control the geometry of mountain belts. Insights from numerical modelling [PDF]

, 2017
Continental collision forms mountain ranges that have shaped much of Earth's topography. Yet, the process by which material is transported and redistributed in collision zones remains debatable.
Cloetingh, Sierd, Matenco, Liviu, Tectonics, ISES: Interfering subduction zones: a new mechanism for mountain building, Vogt, Katharina   +4 more
core   +2 more sources

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

GEOCHRONOLOGY OF THE METAMORPHIC ROCKS IN THE KURAI ACCRETIONARY PRISM (SOUTH-EASTERN GORNY ALTAI)

Геодинамика и тектонофизика, 2017
The paper provides a review of the published and new geological and geochronological data on the metamorphic rocks in the Kurai accretionary prism, considering the evolution of the Kuznetsk-Altai island-arc paleosubduction channel of the Siberian ...
A. V. Kulikova, M. M. Buslov, A. V. Travin   +2 more
doaj   +1 more source

Deeply subducted continental fragments – Part 2: Insight from petrochronology in the central Sesia Zone (western Italian Alps) [PDF]

Solid Earth, 2018
Subducted continental terranes commonly comprise an assembly of subunits that reflect the different tectono-metamorphic histories they experienced in the subduction zone.
F. Giuntoli, P. Lanari, M. Burn, B. E. Kunz, M. Engi   +4 more
doaj   +1 more source

Numerical analysis of deformation in the upper part of subduction zones [PDF]

, 1981
The stresses and deformation in an accretionary prism, and the crystalline basement behind and beneath it, have been modelled using finite element analysis, assuming a visco-elastic Maxwell rheology for the rocks involved.
Park, M.J.M.
core  

Depositional processes of varved sediments from proglacial Lago Frías since 1800 CE (North Patagonian Andes, Argentina)

Boreas, EarlyView.
The glacierized Valle Frías in Northern Patagonia is one of the best‐studied valleys in South America and includes varved sediments from Lago Frías. We complement this lacustrine record with a high‐resolution documentation of varve counts and their composition.
Bernd Zolitschka, Philipp Böning, A. Catalina Gebhardt, M. Alicia Irurzun, Wojciech Tylmann, Christoph Vogt, Claudia S. G. Gogorza   +6 more
wiley   +1 more source

Field‐Based Evidence for Intra‐Slab High‐Permeability Channel Formation at Eclogite‐Facies Conditions During Subduction

Geochemistry, Geophysics, Geosystems, 2021
Fluid release from subducting oceanic lithosphere is a key process for subduction zone geodynamics, from controlling arc volcanism to seismicity and tectonic exhumation.
Francesca Piccoli, Jay J. Ague, Xu Chu, Meng Tian, Alberto Vitale Brovarone   +4 more
doaj   +1 more source

Seismic images of the megathrust rupture during the 25th October 2010 Pagai earthquake, SW Sumatra: Frontal rupture and large tsunami [PDF]

The Mentawai segment of the Sumatra subduction zone is locked and likely to produce a large earthquake in the near future. A part of this locked zone ruptured on 12 September 2007 producing twin earthquakes of Mw = 8.5 and 7.9.
Harjono, Heri, Hananto, Nugroho, Permana, Haryadi, Djajadihardja, Yusuf, Singh, Satish C., Mukti, Maruf   +5 more
core   +1 more source

Evidence for the continental origin of Pliocene deposits in the central Baja California peninsula, Mexico, and implications for controls on biodiversity

Sedimentology, EarlyView.
ABSTRACT Previous studies have documented genetic divergence within the last few million years between northern and southern populations of terrestrial plants and animals along the Baja California peninsula, with many studies hypothesising that the divergence is due to an ancient seaway that crossed the central peninsula and created a physical barrier ...
Kevin K. Gardner, Rebecca J. Dorsey, Stephen T. Hasiotis, José Luis Antinao, Michael H. Darin, Scott E. K. Bennett, Matthew Heizler, Greer Dolby, Brian Hausback   +8 more
wiley   +1 more source

Large megathrust earthquakes in cold mantle wedge corners under lawsonite blueschist facies

Nature Communications
Giant megathrust earthquakes typically occur above the upper-plate Moho or the 350°C isotherm in warm subduction zones. However, large earthquakes also occur within the mantle wedge corner at 35-55 km depth at cold subduction zones, such as the Kermadec,
Hao Zhang, Sylvain Barbot, Zekang Yang, Mingqi Liu, Lei Zhang, John Platt   +5 more
doaj   +1 more source