Zircon ages delimit the provenance of a sand extrudite from the Botucatu Formation in the Paraná volcanic province, Iraí, Brazil

Autor: VITER M. PINTO, LÉO A. HARTMANN, JOÃO O.S. SANTOS, NEAL J. MCNAUGHTON

Publikováno v: Anais da Academia Brasileira de Ciências, Vol 87, Iss 3, Pp 1611-1622 (2015)

Ion microprobe age determinations of 102 detrital zircon crystals from a sand extrudite, Cretaceous Paraná volcanic province, set limits on the origin of the numerous sand layers present in this major flood basalt province. The zircon U-Pb ages refl

Externí odkaz: https://doaj.org/article/9ebec92f180c4398be3151d4fa5cfa26

SHRIMP U-Pb zircon dating of Pedras Grandes Suite, southern Santa Catarina State, Brazil

Autor: Andréa R. Jelinek, Artur C. Bastos-Neto, Jayme A.D. Leite, Léo A. Hartmann, Neal J. McNaughton

Publikováno v: Anais da Academia Brasileira de Ciências, Vol 77, Iss 1, Pp 125-135 (2005)

Two major magmatic pulses of the granitic Florianópolis Batholith in Santa Catarina State, southern Brazil, occurred between 613±5Ma and 595±5 Ma, during the Neoproterozoic Brasiliano Cycle. These ages were obtained by U-Pb isotopic determinations

Externí odkaz: https://doaj.org/article/06debee9b4404c87a4671e73db07e245

Metamorphic evolution and U-Pb zircon SHRIMP geochronology of the Belizário ultramafic amphibolite, Encantadas Complex, southernmost Brazil

Autor: Léo A. Hartmann, João O.S. Santos, Jayme A.D. Leite, Carla C. Porcher, Neal J. Mcnaughton

Publikováno v: Anais da Academia Brasileira de Ciências, Vol 75, Iss 3, Pp 393-403 (2003)

The integrated investigation of metamorphism and zircon U-Pb SHRIMP geochronology of the Belizário ultramafic amphibolite from southernmost Brazil leads to a better understanding of the processes involved in the generation of the Encantadas Complex.

Externí odkaz: https://doaj.org/article/abc602548be54fcdbf76d0d8a080268e

Birthplace of the São Francisco Craton, Brazil: Evidence from 3.60 to 3.64 Ga Gneisses of the Mairi Gneiss Complex

Autor: Elson P. Oliveira, Stéfano Albino Zincone, Neal J. McNaughton, Cristina Talavera

Publikováno v: Oliveira, E P, Mcnaughton, N J, Zincone, S A & Talavera, C 2020, ' Birthplace of the São Francisco Craton, Brazil: Evidence from 3.60-3.64 Ga Gneisses of the Mairi Gneiss Complex ', Terra nova . https://doi.org/10.1111/ter.12460

Records of Earth's primitive crust are scarce. Eoarchean (older than 3.6 Ga) banded mafic to felsic gneisses have been discovered in the São Francisco Craton, Brazil, pushing back by over 100 million years the oldest gneisses known to date in South

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db7793c674c5d601396d663b65b2aae4
https://doi.org/10.1111/ter.12460

Albite ± Actinolite-Altered Porphyry Dykes in Archean Gold Deposits of the Boulder Lefroy-Golden Mile Fault System, Yilgarn Craton, Western Australia: Petrography, Chronology, and Comparison to Canadian Albitites

Autor: Neal J. McNaughton, Janet R. Muhling, Andreas G. Mueller

Publikováno v: Minerals, Vol 11, Iss 1288, p 1288 (2021)
Minerals
Volume 11
Issue 11

The Boulder Lefroy-Golden Mile fault system in the Archean Yigarn Craton is the most productive gold-mineralized structure in Australia (>
2300 t Au). The New Celebration deposit (51 t Au) is part of a group of hematite- and anhydrite-bearing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::392a3ccee894af195c410bb10c38d1f9
https://www.mdpi.com/2075-163X/11/11/1288