[Latinmag] LatinMag online talk-Thales Pescarini

[Victor Piedrahita Velez]

Estimada Comunidad LatinMag,

Esperando que todos estén muy bien, les escribimos este mensaje con el fin de invitarlos a la siguiente charla del ciclo de conferencias de LatinMag 2025. El próximo miércoles 27 de agosto (Bogotá-10:00h, Ciudad de México-9:00h, São Paulo/Buenos Aires-12:00h). En esta oportunidad tendremos al Dr. Thales Pescarini (Yale University, USA), con la charla titulada “Thermoviscous Magnetic Relaxation as a Thermochronological Tool: A Case Study from the Nama Foreland (Damara Orogen, southern Namibia)”. Al final de este mensaje pueden encontrar el resumen de esta presentación y su link de meet.

Esperamos verlos allí,

Romina Achaga y Victor Piedrahita
------------------------------------------------------------------------------------------------------------------------------------------------------------
Prezada Comunidade LatinMag,

Esperamos que todos estejam muito bem. Escrevemos esta mensagem para convidálos para a próxima palestra do ciclo de conferências da LatinMag 2025. Na próxima quarta-feira, 27 de agosto (Bogotá-10:00h, Ciudad de México-9:00h, São Paulo/Buenos Aires-12:00h), teremos a participação da Dr. Thales Pescarini (Yale University, USA), com a palestra intitulada “Thermoviscous Magnetic Relaxation as a Thermochronological Tool: A Case Study from the Nama Foreland (Damara Orogen, southern Namibia)”. Ao final desta mensagem, vocês encontrarão o resumo da apresentação e o link do meet.
Esperamos vêlos em breve,

Romina Achaga e Victor Piedrahita
------------------------------------------------------------------------------------------------------------------------------------------------------------
Meeting : https://meet.google.com/wep-wzqc-ezg

Thermoviscous Magnetic Relaxation as a Thermochronological Tool: A Case Study from the Nama Foreland (Damara Orogen, southern Namibia)

The integration of rock magnetic and paleomagnetic data offers a powerful yet underexplored approach to constraining thermal histories of sedimentary basins and orogenic belts. In this study, we apply magnetic methods as a thermochronological proxy to investigate the post-orogenic evolution of the Damara Orogenic System in southern Namibia. Drill-core samples from the Nama Group, a terminal Ediacaran siliciclastic–carbonate succession, were subjected to detailed rock magnetic, paleomagnetic, and Raman spectroscopic analyses. A pervasive reverse-polarity remanent component, carried by single-domain magnetite with unblocking temperatures between 320 and 450 °C, was interpreted as a thermoviscous remagnetization acquired during regional low-grade metamorphism. Raman-derived peak temperatures conditions (300–350 °C) and magnetic thermochronometry modeling based on Néel relaxation theory suggest remanence acquisition during orogenic heating and progressive locking during post-tectonic cooling at ~1 °C/Myr. These results support a unified thermotectonic model in which widespread Cambro-Ordovician remagnetization across West Gondwana reflects isostatic rebound and crustal stabilization following the Pan-African–Brasiliano orogenies. Our findings highlight the potential of paleomagnetic recorders to serve as thermochronometers in sedimentary successions lacking conventional mineral-based geochronological systems.
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://lists.gl.fcen.uba.ar/pipermail/latinmag/attachments/20250820/a640d258/attachment-0001.htm>
------------ próxima parte ------------
A non-text attachment was scrubbed...
Name: WhatsApp Image 2025-08-20 at 21.01.25.jpeg
Type: image/jpeg
Size: 74136 bytes
Desc: WhatsApp Image 2025-08-20 at 21.01.25.jpeg
URL: <http://lists.gl.fcen.uba.ar/pipermail/latinmag/attachments/20250820/a640d258/attachment-0001.jpeg>