EN I For todays #ThinSectionThursday, we present garnet porphyroclasts in an ultramylonite from the Southern Italian Alps, Premosello shear zone, Ossola Valley (courtesy of our next P-T-t talker Dr. Stefania Corvo). This feature will be part of her talk next week, on Sept 14th, in which she’ll discuss the interplay between deformation and metamorphism withContinue reading “[TST] Garnet porphyroclasts in ultramylonite from the Southern Italian Alps”
Tag Archives: garnet
[LPT] Diffusion Chronometry Geospeedometry
EN | Diffusion chronometry, also known as geospeedometry, is a technique that can be used to constrain the duration of thermal pulses of a geological event, for example, by modeling the diffusion of element profiles in minerals. The technique involves measuring the diffusive loss of an element during the heating and/or cooling history of aContinue reading “[LPT] Diffusion Chronometry Geospeedometry”
[LPT] Lu-Hf Garnet dating
EN | Garnet is one of the main metamorphic minerals and isotopic dating of this mineral can constrain processes such as melt extraction and peritectic garnet formation, within different geological contexts. One of the isotopic systems used is the Lu-Hf system by dissolution. Check out some quick info about this method and result examples. PT-BRContinue reading “[LPT] Lu-Hf Garnet dating”
[Article] Multiple P–T–d–t paths reveal the evolution of the final assembly of the supercontinent Nuna (1.6–1.5 Ga) in NE Australia
EN | The integration of petrochronology with metamorphic petrology and petrostructural analysis allowed to identify two discrete metamorphic and deformation stages in the Proterozoic Georgetown Inlier (NE Australia). Robust and precise Lu–Hf geochronology determined garnet growth at 1.6 Ga (M1/D1), which was supported by a similar age from in–situ monazite geochronology. Medium-P/T metamorphism (M1) duringContinue reading “[Article] Multiple P–T–d–t paths reveal the evolution of the final assembly of the supercontinent Nuna (1.6–1.5 Ga) in NE Australia”
PETROCHRONICS 