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”
Category Archives: Thin Section Thursday
[TST] Ultraclasite from the Pernambuco shear zone (PE, Brazil)
EN I Our #ThinSectionThursday this week is an ultracataclasite from the eastern Pernambuco shear zone (PE, Brazil) containing heterogeneous fragments of ultramylonite, plagioclase and quartz. Recrystallised quartz aggregates are observed at the contact of the ultracataclasite with its host granite. (Lambda plate inserted). This rock and its geological context will be discussed on our nextContinue reading “[TST] Ultraclasite from the Pernambuco shear zone (PE, Brazil)”
PETROCHRONICS 