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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Late Tonian within-plate mafic magmatism and Ediacaran partial melting and magmatism in the Costeiro Domain, Central Ribeira Belt, Brazil

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Meira, V. T. [1, 2] ; Garcia-Casco, A. [3, 4] ; Juliani, C. [5] ; Schorscher, J. H. D. [6]
Total Authors: 4
[1] Univ Sao Paulo, Inst Geociencias, Programa Posgrad Geoquim & Geotecton, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Geofis, Sao Paulo, SP - Brazil
[3] Univ Granada, Fac Ciencias, Dept Mineral & Petrol, Granada - Spain
[4] Univ Granada, Inst Andaluz Ciencia Tierra, CSIC, Granada - Spain
[5] Univ Sao Paulo, Inst Geociencias, Dept Geol Sedimentar & Ambiental, Sao Paulo, SP - Brazil
[6] Univ Sao Paulo, Inst Geociencias, Dept Mineral & Geotecton, Sao Paulo, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: Precambrian Research; v. 334, NOV 1 2019.
Web of Science Citations: 0

The tectonic evolution of the Ribeira Belt comprises a protracted history involving several magmatic, deformational and metamorphic events mainly associated with the Neoproterozoic Brasiliano Orogenic Cycle. Most tectonic models relate the evolution of the Ribeira Belt to a protracted orogenic history with diachronous accretion of different terranes against larger cratonic blocks. However, recent proposals challenge models of multistage terrane accretions. In this paper we revisit the current tectonic models proposed for the Central Ribeira Belt, based essentially on a large data compilation and new geochemical and geochronological data from samples of the Costeiro Complex. The critical evaluation of these data indicates a long-lasting shared evolution for two geological domains in the Central Ribeira Belt (Embu and Costeiro Domains), usually thought to be different terranes accreted during the late Ediacaran. The first report of late Tonian within-plate tholeiitic to alkaline mafic magmatism and the late Cryogenian-early Ediacaran metamorphism in the Costeiro Complex support the interpretation of shared evolution on both Embu and Costeiro Domains, challenging the current models of diachronous accretion of terranes during the late Ediacaran in the Central Ribeira Belt. (AU)

FAPESP's process: 12/15462-7 - Neoproterozoic orogenesis on São Roque / Serra do Itaberaba, Embu and Costeiro domains and the crustal and tectonic evolution of the southeastern São Paulo State
Grantee:Caetano Juliani
Support Opportunities: Regular Research Grants
FAPESP's process: 16/06114-6 - The Neoproterozoic Earth System and the rise of biological complexity
Grantee:Ricardo Ivan Ferreira da Trindade
Support Opportunities: Research Projects - Thematic Grants