Results 51 to 60 of about 7,779 (214)

U-Pb geochronology of rutile: deciphering the cooling history of the Oaxacan Complex granulites, southern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2020
Rutile (TiO2) is a heavy mineral, commonly found as accessory in many lithologies, such as basic igneous rocks, high-grade metamorphic units, as well as a detritus in sedimentary clastic rocks.
Miguel Gerardo Adame-Martínez   +3 more
doaj   +1 more source

Formation of the Xigaze Metamorphic Sole under Tibetan continental lithosphere reveals generic characteristics of subduction initiation

open access: yesCommunications Earth & Environment, 2023
Metamorphic soles found under allochthonous oceanic lithosphere, or ophiolites, are interpreted as derived from lower plate oceanic crust material accreted to upper plate mantle during intraoceanic subduction initiation.
Carl Guilmette   +8 more
doaj   +1 more source

Concerning the discussion about the Bug series of the Middle Bug (Ukrainian shield)

open access: yesГеофизический журнал, 2023
The materials of several articles and reports published in 2022 by the authors of this work and V.P. Kirilyuk (Kirilyuk, 2022 a,b), who discussed the structure and stratigraphy of the Вug area granulite complex of the Ukrainian Shield.
O.B. Gintov   +3 more
doaj   +1 more source

Multi‐Mineral Geochronology Across the Neoproterozoic Brasília Nappe Stack: Constraints on Thermal Resetting and Metamorphic Architecture

open access: yesTerra Nova, EarlyView.
ABSTRACT The Southern Brasília Orogen formed during Western Gondwana's final assembly and comprises nappe systems piled against the São Francisco Craton. We present new rutile U–Pb ages from the lowermost Canastra Group (> 2.2 Ga) and the uppermost Carrancas Group (~560 Ma), integrated with published zircon, monazite, garnet, and mica ages from the ...
Rodrigo Irineu Cerri   +7 more
wiley   +1 more source

Melt Reintegration Modelling: Testing against a Subsolidus Reference Assemblage

open access: yesGeosciences, 2017
Phase equilibria modelling incorporating melt reintegration offers a methodology to create hypothetical rock compositions that may have existed prior to melt loss, allowing the potential prograde evolution of rocks to be explored.
Kiara L. Alessio   +4 more
doaj   +1 more source

Transformational Faulting: The Case of Quartz‐Coesite

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Transformational faulting in olivine has been widely invoked as a possible triggering mechanism for deep‐focus earthquakes, yet its dynamics remain debated. It is unclear whether it requires the combined effects of heat release, volume change and mechanical strength contrast, or whether it can be triggered by any one of these alone.
Giulia Mingardi   +8 more
wiley   +1 more source

Decompressional equilibration of the Midsund granulite from Otrøy, Western Gneiss Region, Norway

open access: yesGeologica Carpathica, 2019
The Western Gneiss Region (WGR) of the Scandinavian Caledonides is an archetypal terrain for high-pressure (HP) and ultrahigh-pressure (UHP) metamorphism. However, the vast majority of lithologies occurring there bear no, or only limited, evidence for HP
Holmberg Johanna   +4 more
doaj   +1 more source

A Geophysical Crustal Model of Central Italy for Geoneutrino Predictions in Borexino

open access: yesEarth and Space Science, Volume 13, Issue 11, November 2026.
Abstract Predicting the geoneutrino signal at underground detectors requires a local crustal reference whose precision matches the experimental uncertainty. The current Borexino reference is 15 years old and deterministic. We replace it with GUESS, a probabilistic 3‐D model of the Gran Sasso region, built by Bayesian inversion of multi‐source ...
L. Rossi   +21 more
wiley   +1 more source

Position of Saxonian granulite within the frame of European Variscides [PDF]

open access: yes, 2012
The Saxonian Granulite Massif (the type granulite locality) is situated in the northwestern part of Bohemian Massif. It is an antiform with dome structure, which came to the surface from below SaxoThuringian Paleozoic units.
Ramešová, Olga
core  

MENDERES MASİFİ'NİN PAN-AFRİKAN TEMEL VE PALEOZOYİK - ERKEN TERSİYER ÖRTÜ SERİLERİNİN POLİMETAMORFİK EVRİMİ

open access: yesBulletin of the Mineral Research and Exploration, 2011
Batı Anadolu'da yüzlek veren Menderes Masifi ana hatlarıyla Geç Alpin sıkışma tektoniği ile biçimlenmiş karmaşık bir tektonik iç yapı sunmaktadır. Bu kristalin kompleksin litostratigrafik istifi; 1-Pan-Afrikan temel (çekirdek serisi) ve 2-Paleozoyik ...
Osman CANDAN   +7 more
doaj  

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