Results 201 to 210 of about 1,313,814 (346)

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer   +4 more
wiley   +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)

open access: yesJournal of Metamorphic Geology, EarlyView.
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   +4 more
wiley   +1 more source

Reaction‐Driven Development of Fine‐Grained Plagioclase Networks Influences the Rheology of the Crust in the Bergen Arcs, Norway

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT In the middle to lower continental crust, mineral reactions can play a key role in controlling rheological behaviour by generating fine‐grained, mechanically weak domains. In granulite‐facies rocks from Krossøy (Bergen Arcs, Norway), we document how garnet breakdown produced interconnected networks of orthopyroxene + plagioclase ± spinel that ...
Lorena H. Filiberto   +4 more
wiley   +1 more source

Clinical application of additive manufacturing in maxillofacial prosthetics: A scoping review

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose Digital workflows provide significant advances in prosthodontics, especially in terms of accuracy, reduced treatment duration, and quality of life. Moreover, additive manufacturing (AM) is particularly adapted for the fabrication of personalized complex prototypes required for the prosthetic rehabilitation of maxillofacial defects ...
Hélène Magro   +2 more
wiley   +1 more source

Gold mineralization in the Um El Tuyor area, South Eastern Desert, Egypt

open access: yes, 2004
This thesis reports petrographic, mineralogical and geochemical data that constrain the hydrothermal alteration and gold mineralization in the Um El Tuyor area, SE Egypt.
Zoheir, Basem
core  

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis   +5 more
wiley   +1 more source

Inboard advance of arc magmatism regulates mountain building in the Andes. [PDF]

open access: yesNat Commun
Capaldi TN   +4 more
europepmc   +1 more source

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