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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Parsons, Andrew
University of Plymouth
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2024Experimental observation of a new attenuation mechanism in hcp-metals that may operate in the Earth's inner core
- 2019Ga and Ce ion-doped phosphate glass fibres with antibacterial properties and their composite for wound healing applicationscitations
- 2018Chitosan as a coupling agent for phosphate glass fibre/polycaprolactone compositescitations
- 2016Thermo‐kinematic evolution of the <scp>A</scp>nnapurna‐<scp>D</scp>haulagiri <scp>H</scp>imalaya, central <scp>N</scp>epal: The <scp>C</scp>omposite <scp>O</scp>rogenic <scp>S</scp>ystemcitations
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article
Thermo‐kinematic evolution of the <scp>A</scp>nnapurna‐<scp>D</scp>haulagiri <scp>H</scp>imalaya, central <scp>N</scp>epal: The <scp>C</scp>omposite <scp>O</scp>rogenic <scp>S</scp>ystem
Abstract
<jats:title>Abstract</jats:title><jats:p>The Himalayan orogen represents a “Composite Orogenic System” in which channel flow, wedge extrusion, and thrust stacking operate in separate “Orogenic Domains” with distinct rheologies and crustal positions. We analyze 104 samples from the metamorphic core (Greater Himalayan Sequence, GHS) and bounding units of the Annapurna‐Dhaulagiri Himalaya, central Nepal. Optical microscopy and electron backscatter diffraction (EBSD) analyses provide a record of deformation microstructures and an indication of active crystal slip systems, strain geometries, and deformation temperatures. These data, combined with existing thermobarometry and geochronology data are used to construct detailed deformation temperature profiles for the GHS. The profiles define a three‐stage thermokinematic evolution from midcrustal channel flow (Stage 1, &gt;700°C to 550–650°C), to rigid wedge extrusion (Stage 2, 400–600°C) and duplexing (Stage 3, &lt;280–400°C). These tectonic processes are not mutually exclusive, but are confined to separate rheologically distinct Orogenic Domains that form the modular components of a Composite Orogenic System. These Orogenic Domains may be active at the same time at different depths/positions within the orogen. The thermokinematic evolution of the Annapurna‐Dhaulagiri Himalaya describes the migration of the GHS through these Orogenic Domains and reflects the spatial and temporal variability in rheological boundary conditions that govern orogenic systems.</jats:p>