Results 21 to 30 of about 1,245 (182)

Eoarchean–Paleoproterozoic Tectonothermal History of the Acasta Gneiss Complex Constrained by Titanite and Apatite Petrochronology

Geochemistry, Geophysics, Geosystems
Deciphering Earth's earliest geodynamic processes requires temporally constrained chemical and structural data from rare exposures of ancient rocks.
Omar Khalil Droubi, Ann M. Bauer, Chloë Bonamici, William O. Nachlas, Joshua M. Garber, Michael J. Tappa, Jesse R. Reimink   +6 more
doaj   +2 more sources

Simultaneous Magmatic and Hydrothermal Regimes in Alta–Little Cottonwood Stocks, Utah, USA, Recorded Using Multiphase U-Pb Petrochronology

Geosciences, 2020
Magmatic and hydrothermal systems are intimately linked, significantly overlapping through time but persisting in different parts of a system. New preliminary U-Pb and trace element petrochronology from zircon and titanite demonstrate the protracted and ...
Michael A. Stearns, John M. Bartley, John R. Bowman, Clayton W. Forster, Carl J. Beno, Daniel D. Riddle, Samuel J. Callis, Nicholas D. Udy   +7 more
doaj   +2 more sources

Recent advances in petrochronology: from dates to ages and rates of deep orogenic processes [PDF]

Comptes Rendus. Géoscience
In order to decipher the prevalent processes active at depth in orogenic systems, their time sequence and their rates have to be assessed. This is essentially done via absolute dating of accessory and rock-forming metamorphic minerals. The interpretation
Labrousse, Loic, Bonnet, Guillaume, François, Camille, Godet, Antoine, Gyomlai, Thomas   +4 more
doaj   +2 more sources

Deeply subducted continental fragments – Part 2: Insight from petrochronology in the central Sesia Zone (western Italian Alps) [PDF]

Solid Earth, 2018
Subducted continental terranes commonly comprise an assembly of subunits that reflect the different tectono-metamorphic histories they experienced in the subduction zone.
F. Giuntoli, P. Lanari, M. Burn, B. E. Kunz, M. Engi   +4 more
doaj   +4 more sources

Timing of Dike and Sill Emplacement in the Inner Aureole of the Alta Stock, Utah Determined by Zircon and Monazite Petrochronology

Geochemistry, Geophysics, Geosystems
Detailed geochronology from two compositionally distinct generations of dikes and sills intruded into the Alta metamorphic aureole, north‐central Utah, complement previous geochronologic studies from the Alta stock, providing information on the timing of
C. J. Beno, M. A. Stearns, J. R. Bowman, J. M. Bartley, D. P. Fernandez, A. R. C. Kylander‐Clark   +5 more
doaj   +2 more sources

150 Myr of Episodic Metamorphism Recorded in the Yukon-Tanana Terrane, Northern Canadian Cordillera: Evidence from Monazite and Xenotime Petrochronology [PDF]

Lithosphere, 2022
We used in situ laser-ablation split-stream petrochronology to target monazite and xenotime associated with specific metamorphic index minerals in the Florence Range metamorphic suite in the northern Canadian Cordillera.
R. Soucy La Roche, S. C. Dyer, A. Zagorevski, J. M. Cottle, F. Gaidies   +4 more
doaj   +2 more sources

Author Correction: Age of the magma chamber and its physicochemical state under Elbrus Greater Caucasus, Russia using zircon petrochronology and modeling insights [PDF]

Scientific Reports, 2023
I. N. Bindeman, O. E. Melnik, M. Guillong, I. S. Utkin, J.-F. Wotzlaw, A. K. Schmitt, R. A. Stern   +6 more
doaj   +2 more sources

Petrochronology of Alkaline Intrusive Magmatism in the Central High‐Atlas (Morocco) and Relationships With Jurassic Salt Diapirism

Geochemistry, Geophysics, Geosystems
A striking feature of the Imilchil alkaline province, in the Moroccan Central High Atlas, is the close association of magmatic intrusions with Triassic sediments exhumed by diapirism. This study reports field, petrographic, geochemical and Sr‐Nd isotopic
Youssef Ahechach, Muhammad Ouabid, Françoise Roger, Fleurice Parat, Otmane Raji, Jean‐Marie Dautria, Valérie Bosse, Cheikh Elwali Malainine, Hicham El Messbahi, Hamza Skikra, Jean‐Louis Bodinier   +10 more
doaj   +2 more sources

Garnet petrochronology reveals the lifetime and dynamics of phonolitic magma chambers at Somma-Vesuvius. [PDF]

Sci Adv, 2022
Somma-Vesuvius is one of the most iconic active volcanoes with historic and archeological records of numerous hazardous eruptions. Petrologic studies of eruptive products provide insights into the evolution of the magma reservoir before eruption.
Wotzlaw JF, Bastian L, Guillong M, Forni F, Laurent O, Neukampf J, Sulpizio R, Chelle-Michou C, Bachmann O.   +8 more
europepmc   +4 more sources

Petrochronology based on REE-minerals: monazite, allanite, xenotime, apatite

Reviews in Mineralogy and Geochemistry, 2017
### REE-minerals Monazite, xenotime, and allanite are REE1-minerals sensu stricto because lanthanides (La…Lu) and yttrium are critical constituents in them. Apatite does not require REE, but because it contains substantial REE in many rocks, it is included in this review.
Martin Engi, Engi, Martin
core   +4 more sources