Paleoproterozoic metamorphosed calc-alkaline dikes of the southwestern Río de la Plata craton, Tandilia belt of Argentina, record a prograde high-pressure, medium-temperature evolution
Sign Up to like & getrecommendations! Published in 2020 at "Journal of South American Earth Sciences"
DOI: 10.1016/j.jsames.2020.102595
Abstract: Abstract Two metamorphosed calc-alkaline dikes, a metadacite and metarhyolite, and their country-rock from El Quebracho hill in the Tandilia belt (TB), Rio de la Plata craton, were studied in detail. Both dikes contain chemically zoned… read more here.
Keywords: alkaline dikes; calc alkaline; plata craton; metamorphosed calc ... See more keywords
First geochronological constraint for the Palaeoproterozoic Lomagundi-Jatuli δ13C anomaly in the Tandilia Belt basement (Argentina), Río de la Plata Craton
Sign Up to like & getrecommendations! Published in 2019 at "Precambrian Research"
DOI: 10.1016/j.precamres.2019.105477
Abstract: Abstract Geochronological data of Palaeoproterozoic carbonates with δ13C values between +5‰ and +16‰ suggest that the positive carbon isotope excursion of the global Lomagundi-Jatuli event (LJE) occurred mostly between 2220 and 2060 Ma. In the southern… read more here.
Keywords: lomagundi jatuli; lje; belt basement; plata craton ... See more keywords