New high-precision 40Ar/39Ar ages for the Serra do Mar alkaline magmatism in the São Sebastião Island, SE Brazil, and implications
Abstract We present new high-resolution 40Ar/39Ar ages for alkaline layered gabbros and cross-cutting mafic-ultramafic and felsic dykes from the São Sebastião Island, in the northern sector of the Serra do Mar Alkaline Province, São Paulo, Brazil. Duplicate analysis of single kaersutite crystals yie...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Sociedade Brasileira de Geologia
2022-01-01
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Series: | Brazilian Journal of Geology |
Subjects: | |
Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892021000400304&lng=en&tlng=en |