Results 121 to 130 of about 17,505 (279)

The Caraguataí syenitic suite, a ca. 2.7Ga-old alkaline magmatism (petrology, geochemistry and U–Pb zircon ages). Southern Gavião block (São Francisco Craton), Brazil [PDF]

open access: green, 2011
Simone Cerqueira Pereira Cruz   +10 more
openalex   +1 more source

The spatial and compositional evolution of the Jurassic Ghorveh-Dehgolan plutons of the Zagros Orogen, Iran: SHRIMP zircon U-Pb and Sr and Nd isotope evidence

open access: yesGeologica Acta, 2015
The Ghorveh-Dehgolan plutons of the northern Sanandaj-Sirjan Zone, Zagros Orogen, comprise seven composite intrusive bodies that were generated during northeastward subduction of Neotethys beneath the Iranian sector of the Eurasian plate.
S. YAJAM   +5 more
doaj  

On the magmatic evolution of the alkaline igneous province of South Greenland

open access: yesRapport Grønlands Geologiske Undersøgelse, 1966
In 1938 E. Wegmann divided the rocks of southern Greenland into and old basement and a younger formation. The basement consists of the remains of a mountain chain for which Wegmann introduced the name the Ketilides. The younger rocks, which are separated from the Ketilidian orogeny by a long period of denudation, were grouped in the Gardar formation ...
openaire   +2 more sources

Characterisation of gold from Fiji [PDF]

open access: yes, 1995
This is a study of the variation in chemistry and inclusion mineralogy of bedrock and placer gold from Fiji. It forms part of a large project, undertaking gold characterisation from a wide range of geological environments in Ecuador, Zimbabwe ...
Henney, P.J., Naden, Jon
core  

High-MgO lavas associated to CFB as indicators of plume-related thermochemical effects: the case of ultra-titaniferous picrite-basalt from the Northern Ethiopian-Yemeni plateau [PDF]

open access: yes
A comprehensive petrological and geochemical dataset is reported in order to define the thermo-compositional characteristics of Ti (Fe)-enriched picrite-basalt lavas (HT2, TiO2 3-7 wt%), erupted close to the axial zone of the inferred Afar mantle plume ...
Beccaluva, Luigi   +6 more
core   +1 more source

Southern Urals lamproites: the problems of terminology, age, and geodynamic interpretation

open access: yesЛитосфера, 2017
We have studied mineral and chemical composition of lamproites from Kalymbaevsky Complex the Middle Trias. These lamproites were developed in Magnitogorsk and Eastern-Urals megazones of the Southern Urals.
S. V. Pribavkin
doaj   +2 more sources

Alkaline magmatism in the Selwyn Basin, Yukon: relationship to SEDEX mineralization

open access: hybrid, 2021
Emma Scanlan   +4 more
openalex   +1 more source

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