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PETROCHRONICS is a Brazil-based research group with an international network of collaborators. Our focus is the investigation and scientific communication of petrochronology and it’s geodynamic implications.

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PT | Hoje, dia 30 de maio, é celebrado no Brasil o Dia d@ Geólog@. Nossos parabéns a todas as pessoas que buscam compreender e desbravar a Terra das mais variadas formas! We invite you to watch our PTt talk 21! EN | Eocene molasse sediments from the Southern Carpathians (here the Călimănești Conglomerate, in Romania) show some typical features of subaerial mass-flow deposits as coarse- to very coarse-grained lithofacies limited by multiple discontinuities, arranged in fining-upward cycles. EN | This #TuesdayFieldMemories is a pseudotachylite from the Juru shear zone (PB, Brazil) showing the main vein (centimetric) containing quartz and feldspar fractured clasts. From the main vein, injection veins oriented obliquely to its configuration are present, in which relitic grains of recrystallized quartz are observed. Contribution by Gustavo Viegas @lgviegas EN | 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). O PTt-talk está de volta! EN | Our article, "Unravelling the protracted U-Pb zircon geochronological record of high to ultrahigh temperature metamorphic rocks: implications for provenance investigations", is already available on the Geoscience Frontiers website! We discuss the possible causes of bias in the analysis of U-Pb ages in rocks that underwent extreme metamorphic conditions and propose a workflow in order to circumvent those issues, obtain trustworthy ages and retrieve their geological meaning! PT| 2022 não podia terminar sem um apanhado do que rolou nas diferentes plataformas e ações do Petrochronics.

Our newest PTt-talk

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