Arquivos da tag:Geochronology

MAGMATIC BARCODES HELP TO RECONSTRUCT ANCIENT SUPERCONTINENTS! / CÓDIGO DE BARRAS MAGMÁTICO AJUDA A RECONSTRUIR ANTIGOS SUPERCONTINENTES!

In this new article, the results of a study of high spatial precision dating using ionic microprobe of dykes of the southern São Francisco craton are presented. Mafic dykes are very important as they are excellent temporal and spatial markers of magmatic, tectonic and basin opening events. They usually form swarms of defined orientation thatContinuar lendo “MAGMATIC BARCODES HELP TO RECONSTRUCT ANCIENT SUPERCONTINENTS! / CÓDIGO DE BARRAS MAGMÁTICO AJUDA A RECONSTRUIR ANTIGOS SUPERCONTINENTES!”

APATITE FISSION TRACKS and mountain denudation / TRAÇOS DE FISSÃO EM APATITA e denudação das montanhas

Those small minerals can help to understand how quickly a mountain belt is eroded. The method is based on the decay of radiogenic elements within the mineral structure, which leaves small tracks due to the damage caused by the nuclear disintegration. By counting the density and length of the tracks, we can estimate the timeContinuar lendo “APATITE FISSION TRACKS and mountain denudation / TRAÇOS DE FISSÃO EM APATITA e denudação das montanhas”