Results 41 to 50 of about 1,086 (189)

Ultra-high temperature metamorphism in the Guaxupé Complex: a lower crust segment

Brazilian Journal of Geology, 2020
The area is located at the northern boundary of the Guaxupé Complex, which corresponds to the northern domain of the Socorro-Guaxupé Nappe, in the Southern Brasília Orogen, close to the Varginha Shear Zone.
Thaís Güitzlaf Leme, Guillermo Rafael Beltran Navarro, Antenor Zanardo   +2 more
doaj   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, Volume 44, Issue 6, Page 440-469, July 2026.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

Additional file 1 of Pre-eruption magmatic processes and magma plumbing system at Hachijo-Nishiyama volcano, Izu–Bonin arc, Japan

, 2023
Additional file 1: Table S1. Results of the XRF analyses for representative samples from the Hachijo-Nishiyama volcano. Table S2. Results of the ICP–MS analyses for a subset of 25 selected samples from the Hachijo-Nishiyama volcano. Table S3.
Shumpei Yoshimura (10361012), Mitsuhiro Nakagawa (5906354), Kazuki Oiwa (15254546), Takeshi Kuritani (15254549)   +3 more
core   +1 more source

Metamorphism of Late Neoproterozoic-Early Cambrian Schists in Southwest of Zanjan from the Soltanieh Belt in Northwest of Iran [PDF]

Journal of Sciences, Islamic Republic of Iran, 2012
Late Neoproterozoic-Early Cambrian schists have been occurred in southwest of Zanjan city from the Soltanieh belt. The Soltanieh belt in northwest of Iran is uplifted basement of Precambrian-Paleozoic in main central Iran zone and includes outcrops of ...
J. Izadyar
doaj  

Thermal Structure Beneath the Himalayan Orogen Revealed by Pn‐Wave Receiver Function Imaging

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The Himalayan orogen formed through convergence between the Indian and Eurasian plates, and parts of the subducting Indian crust were impeded by the Lhasa terrane and accreted into the orogen. However, whether the Indian lower crust was stripped from the downgoing plate and incorporated into the orogen, and by what mechanism, remain debated ...
Liangyu Zhang, Xiaobo Tian, Jia‐Min Wang, Xiaofeng Liang   +3 more
wiley   +1 more source

Raman scattering of omphacite at high pressure: toward its possible application to elastic geothermobarometry

Due to their widespread occurrence in several geological settings, omphacite inclusions could be used for elastic Raman geothermobarometry. However, the Raman scattering of complex silicate minerals entrapped in a host depends on both the chemical ...
M. Prencipe, B. Mihailova, L. Baratelli, M. Alvaro, M. Murri, F. Cámara   +5 more
core   +2 more sources

MORB-derived amphibolites in the Paleozoic basement of the Aluminé Igneous-Metamorphic Complex, Neuquén, Argentina: Decoding its genesis, P-T evolution and pre-Andean regional correlations

Geologica Acta, 2019
Amphibolites included in the metapelitic sequence and as xenoliths in intrusive magmatic rocks outcropping in the southern sector of the Aluminé Igneous-Metamorphic Complex (AIMC), Neuquén, Argentina, are studied in detail in order to determine their ...
I. URRAZA, S. DELPINO, L. GRECCO
doaj   +3 more sources

Mineral chemistry and geothemobarometry of mantle harzburgites in the Eastern Metamorphic Complex of Khoy ophiolite -NW Iran

Journal of Economic Geology, 2017
Introduction Khoy ophiolite at the global scale is in the middle part of the Alp-Himalaya orogenic belt and it is extended over 3900 Km2 which indicates remnant Neotethys oceanic lithosphere in the Mesozoic era (Kananian et al., 2010). In this paper, in
Morovvat Faridazad
doaj   +1 more source

Whole-rock Geochemistry and Mineral Chemistry of the Late Cretaceous Dacites in SW Sabzevar: constrain on their origin and tectonic setting [PDF]

پترولوژی, 2018
A thick sequence of Upper Cretaceous volcano-sedimentary rocks are cropped out on the northern edge of Central Iran, southwest of Sabzevar. The volcanic rocks are dacite/rhyolite and are associated with pyroclastic rocks, including agglomerate, breccia ...
Habibollah Ghasemi, Zakie Kazemi, Fardin Mousivand, William Griffin   +3 more
doaj   +1 more source

Refinement of geothermobarometry for cordierite granulites

Journal of Earth System Science, 1993
Refined geothermobarometers are presented for cordierite granulites. The refinement was achieved by using internally consistent thermodynamic datasets. Improved calibrations have been demonstrated for a number of granulite areas. Also, the usefulness of the improved geobarometer in identifying decompression paths has been discussed.
openaire   +2 more sources