EN | Fun, Fun, Fun!! Do you like puzzles and untangling conundrums? Then, check out our proposed tectonic model to explain the tectonic regimes operating back in the Proterozoic (c. 2.0 Ga to 1.4 Ga), when the oldest supercontinent known today, Nuna, formed.In this contribution, we combined previous structural and metamorphic studies with zircon Lu-HfContinue reading “[Article] Spatio–temporal evolution of Mesoproterozoic magmatism in NE Australia: A hybrid tectonic model for final Nuna assembly”
Tag Archives: granite
[Article] The missing piece of the Paranapanema block in the Guaxupé nappe (Southernmost Brasília orogen)
EN | The Paranapanema block constitutes an important piece in paleogeographical reconstructions. However, few direct information about it in the Southernmost Brasília orogen is available as the block has been covered since the Cretaceous by the Parana basin. Surprisingly, two very similar samples of Opx-Cpx-Hbl banded granulites separated by 5km have shown strongly different U-PbContinue reading “[Article] The missing piece of the Paranapanema block in the Guaxupé nappe (Southernmost Brasília orogen)”
[TST] Late-magmatic fluid induced alteration in the Itaporé batholith rocks
EN | Late-magmatic fluid induced alteration is outstandingly marked in the Itaporé batholith rocks: This evolution in the alteration degree is evidenced by siderophyllite (Bt) to phengite (Ph) to muscovite (Ms) transitions. The intense degree of alteration in the two-mica granite (a) and the muscovite leucogranite (b) result in a significant deviation from the parentalContinue reading “[TST] Late-magmatic fluid induced alteration in the Itaporé batholith rocks”
PETROCHRONICS 