Results 11 to 20 of about 1,125 (137)

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

Petrochronology and hygrochronology of tectono-metamorphic events [PDF]

Gondwana Research, 2019
U-Th-Pb petrochronology is based on the incontrovertible fact that the diffusion of radiogenic Pb is negligibly small relative to retrograde reaction rates.
Bosse, Valérie, Villa, Igor M.
core   +7 more sources

Zircon – Tiny but Telling: A Petrochronological Study [PDF]

This thesis concerns the field of petrochronology, where time is linked to the physical conditions (e.g., pressure P and temperature T) of rock-forming events, to provide better constraints on key geological processes such as mountain building ...
Streicher, Linus Bijan
core   +3 more sources

Technical note: Rapid phase identification of apatite and zircon grains for geochronology using X-ray micro-computed tomography [PDF]

Geochronology, 2022
Apatite and zircon are among the best-studied and most widely used accessory minerals for geochronology and thermochronology. Given that apatite and zircon are often present in the same lithologies, distinguishing the two phases in crushed mineral ...
E. H. G. Cooperdock, F. Hofmann, F. Hofmann, R. M. C. Tibbetts, A. Carrera, A. Takase, A. J. Celestian   +6 more
doaj   +1 more source

COMMENTS ON THE ARTICLE AUTHORED BY M.V. MINTS AND K.A. DOKUKINA – THE BELOMORIAN ECLOGITE PROVINCE (EASTERN FENNOSCANDIAN SHIELD, RUSSIA): MESO-NEOARCHEAN OR LATE PALEOPROTEROZOIC?

Геодинамика и тектонофизика, 2021
The comments are given on the article authored by M.V. Mints and K.A. Dokukina – The Belomorian Eclogite Province (Eastern Fennoscandian Shield, Russia): Meso-Neoarchean or Late Paleoproterozoic?
S. G. Skublov, A. V. Berezin, L. I. Salimgaraeva   +2 more
doaj   +1 more source

Paleocene‐Eocene High‐Pressure Carbonation of Western Alps Serpentinites: Positive Feedback Between Deformation and CO2‐CH4 Fluid Ingression Responsible for Slab Slicing?

Geochemistry, Geophysics, Geosystems, 2023
Meter‐ to hectometer‐size horizons of carbonate‐bearing talcschists are found along or near the contacts between the different Liguro‐Piemont subduction slices.
Clément Herviou, Guillaume Bonnet
doaj   +1 more source

Phase Relations, Reaction Sequences and Petrochronology [PDF]

Reviews in Mineralogy and Geochemistry, 2017
At the core of petrochronology is the relationship between geochronology and the petrological evolution of major mineral assemblages. The focus of this chapter is on outlining some of the available strategies to link inferred reaction sequences and microstructures in metamorphic rocks to the ages obtained from geochronology of accessory minerals and ...
Yakymchuk, C., Clark, Christopher, White, R.   +2 more
openaire   +4 more sources

U–Pb SHRIMP zircon dating and geochemistry of metapelites from the Shillong Meghalaya Gneissic Complex, NE India: Implications for nature of protolith and tectonic setting

Geosystems and Geoenvironment, 2023
The Sonapahar area of Shillong Meghalaya Gneissic Complex (SMGC) is an extension of the Central India Tectonic Zone within the Precambrian Indian shield.
Shyam Bihari Dwivedi, Pratigya Pathak, Kevilhoutuo Theunuo, Ravi Ranjan Kumar   +3 more
doaj   +1 more source

Resolving the timescales of magmatic and hydrothermal processes associated with porphyry deposit formation using zircon U–Pb petrochronology [PDF]

Geochronology, 2020
Understanding the formation of economically important porphyry Cu–Au deposits requires knowledge of the magmatic-to-hydrothermal processes that act within the much larger magmatic system and the timescales on which they occur.
S. J. E. Large, S. J. E. Large, J.-F. Wotzlaw, M. Guillong, A. von Quadt, C. A. Heinrich, C. A. Heinrich   +6 more
doaj   +1 more source

Some thoughts about eclogites and related rocks [PDF]

European Journal of Mineralogy, 2023
The past 40 years have been a golden age for eclogite studies, supported by an ever wider range of instrumentation and enhanced computational capabilities, linked with ongoing developments in thermobarometry and geochronology.
M. Brown
doaj   +1 more source