Geochemistry and isotopic characteristics of the Caviahue-Copahue volcanic complex, Province of Neuquén, Argentina

2006 ◽  
Author(s):  
Johan C. Varekamp ◽  
J. Maarten deMoor ◽  
Matt D. Merrill ◽  
Anna S. Colvin ◽  
Adam R. Goss ◽  
...  
Keyword(s):  
Volcanic Complex

The first results of isotopic (U-Pb, ID-TIMS) dating of individual zircon grains from dolerite dikes of the Eastern zone of the Urals

LITOSFERA ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 224-230
Author(s):  
V. N. Smirnov ◽  
K. S. Ivanov ◽  
T. V. Bayanova
Keyword(s):  
Isotope Geochemistry ◽  
Early Carboniferous ◽  
Dynamic Mode ◽  
Middle Urals ◽  
Volcanic Complex ◽  
The Urals ◽  
Electron Multiplier ◽  
The Middle Urals ◽  
Eastern Zone ◽  
First Results

Research subject. The article presents the results of dating two dolerite dikes differing in geochemical features from a section along the Iset river in the area of Smolinskoe settlement (the Eastern zone of the Middle Urals). Materials and methods. The dating was performed by an U-Pb ID-TIMS technique for single zircon grains using an artificial 205Pb/235U tracer in the laboratory of geochronology and isotope geochemistry of the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences. The lead isotopic composition and uranium and lead concentrations were measured using a Finnigan-MAT (RPQ) seven-channel mass spectrometer in dynamic mode using a secondary electron multiplier and RPQ quadrupole in ion counting mode. Results. The dikes were dated 330 ± 3 Ma and 240 ± 2 Ma. Conclusions. The research results indicate different ages of dolerite dikes developed within the Eastern zone of the Middle Urals. The oldest of the two established age levels corresponds to the Early Carboniferous era. This fact, along with the proximity of the dolerites to the petrochemical features of the basaltoids of the Early Carboniferous Beklenischevsky volcanic complex, allows these bodies to be considered as hypabyssal comagmates of these volcanics. The youngest obtained age level – Triassic – indicates that the introduction of some dolerite dikes was associated with the final phases of the trapp formation developed rarely within the eastern outskirts of the Urals and widely further east in the foundation (pre-Jurassic basement) of the West-Siberian Plate.

RECONSTRUCTING THE GROWTH OF AN ANCIENT VOLCANO FROM ITS EROSIONAL LANDSCAPE USING GEOMORPHIC AND PETROLOGIC TECHNIQUES - AKAROA VOLCANIC COMPLEX, NEW ZEALAND

2016 ◽  
Author(s):  
Noah N. Williams ◽  
◽  
Benson G. Worthington ◽  
Samuel Hampton ◽  
Darren Gravley
Keyword(s):  
New Zealand ◽  
Volcanic Complex

Pre-eruptive PTX fluid-conditions of the Afyon Volcanic Complex (Western Anatolia, Turkey): Studies of natural rocks and phase equilibria experiments

Lithos ◽  
2021 ◽  
pp. 106297
Author(s):  
G. Deniz Dogan-Kulahci ◽  
Sarah B. Cichy ◽  
Abidin Temel ◽  
Roberta Spallanzani
Keyword(s):  
Phase Equilibria ◽  
Western Anatolia ◽  
Volcanic Complex

Petrogenesis of peraluminous magmas in the Central Andean backarc: the Huayra Huasi Volcanic Complex, NW Argentina

2021 ◽  
Author(s):  
C. B. Jofré ◽  
P. J. Caffe ◽  
R. B. Trumbull ◽  
G. Maro ◽  
A. K. Schmitt ◽  
...  
Keyword(s):  
Volcanic Complex

Analysis of shear wave splitting anisotropy in the Tres Virgenes Volcanic Complex, Baja California Sur, Mexico

Geothermics ◽  
2021 ◽  
Vol 94 ◽  
pp. 102115
Author(s):  
F. Chacón-Hernández ◽  
F.R. Zúñiga ◽  
J.O. Campos-Enríquez ◽  
J. Lermo-Samaniego ◽  
N. Jiménez-Méndez
Keyword(s):  
Shear Wave ◽  
Baja California ◽  
Shear Wave Splitting ◽  
Volcanic Complex ◽  
Baja California Sur ◽  
Wave Splitting
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