Results 1 to 10 of about 4,943,633 (275)
Acidic fluids in the Earth’s lower crust [PDF]
Scientific Reports, 2021 Fluid flux through Earth’s surface and its interior causes geochemical cycling of elements in the Earth. Quantification of such process needs accurate knowledge about the composition and properties of the fluids.
Vinod O. Samuel +3 more
doaj +5 more sources
Long-lived Paleoproterozoic eclogitic lower crust [PDF]
Nature Communications, 2021 The nature of the lower crust and the crust-mantle transition is fundamental to Earth Sciences. Here, the authors provide evidence for long-lasting presence of lower crustal eclogite below the seismic Moho, challenging conventional models.
Sebastian Buntin +7 more
doaj +6 more sources
Earthquake-induced transformation of the lower crust. [PDF]
Nature, 2018 The structural and metamorphic evolution of the lower crust has direct effects on the lithospheric response to plate tectonic processes involved in orogeny, including subsidence of sedimentary basins, stability of deep mountain roots and extension of high-topography regions.
Jamtveit B +3 more
europepmc +7 more sources
Dynamic earthquake rupture in the lower crust. [PDF]
Sci Adv, 2019 A lower crustal earthquake is initiated by dynamic rupturing with fragmentation of wall rock that precedes frictional melting.
Petley-Ragan A +5 more
europepmc +8 more sources
Gravity modelling of the lower crust in Sardinia (Italy)
Annals of Geophysics, 1997 In this paper an example is given of an application of statistical techniques to the Bouguer anomalies analysis in order to design a simple crustal model using few a priori assumptions. All gravity measurements carried out in Sardinia have been collected
T. Quarta +6 more
doaj +7 more sources
Earthquake nucleation in the lower crust by local stress amplification [PDF]
Nature Communications, 2020 This study investigates deep intracontinental earthquakes. Based on field data from exhumed lower crustal pseudotachylytes and mylonites from Lofoten, northern Norway, the authors describe a novel model of earthquake nucleation in the lower crust as a ...
L. R. Campbell +3 more
doaj +2 more sources
Frontiers in Earth Science, 2023 This study uses ambient noise and earthquake waveform data recorded over ∼25 broadband seismic networks in the Himalayas, Tibet, and the Pamir-Hindu Kush to compute a 3-D shear wave velocity (Vs) model of the crust beneath the Kohistan and Ladakh arcs ...
Vivek Kumar
doaj +1 more source
Stepwise Widening of the Central Andes—The Role of the Lower Crust
Geophysical Research Letters, 2023 The outward growth of many orogens occurs through pulsed migration of the strain front. During Cenozoic shortening of the central Andes, the strain front abruptly migrated ∼400 km eastward across the Altiplano, isolating the plateau interior from major ...
Huilin Wang, Claire A. Currie
doaj +1 more source
Transfer zones in Mediterranean back-arc regions and tear faults
BSGF - Earth Sciences Bulletin, 2021 Slab tearing induces localized deformations in the overriding plates of subduction zones and transfer zones accommodating differential retreat in back-arc regions.
Jolivet Laurent +9 more
doaj +1 more source
Petrology and the effects of dynamic processes on the felsic rocks in the Darvazeh plutonic body (South Qorveh- Kurdistan) [PDF]
پترولوژی, 2018 The Darvazeh pluton is located in the south of Qorveh. Olivine gabbro, diorite, quartz monzonite and granite rocks are rock forming of this body, but this paper is focused on the leucocratic to mesocratic rocks (quartz monzonitic and granitic rocks ...
Ashraf Torkian +2 more
doaj +1 more source