Mantle sources and differentiation of alkaline magmatic suite of Lages, Santa Catarina, Brazil

Autor:	L. Morbidelli, Luigi Beccaluva, Mario Barbieri, Gianbosco Traversa, G. Macciotta, Celso B. Gomes, C. Garbarino, Aida Maria Conte, Luiz Fernando Scheibe, Massimo Coltorti, Sara Ronca
Přispěvatelé:	Universidade Federal de Santa Catarina. Centro de Filosofia e Ciências Humanas. Laboratório de Análise Ambiental
Jazyk:	angličtina
Rok vydání:	1996
Předmět:	Phonolite Sr-Nd isotopes Suite Geochemistry Mineralogy Mantle (geology) GEOTECTÔNICA igneous petrology Geochemistry and Petrology basanite peralkaline phonolite basanite-peralkaline phonolite Igneous petrology Geology Brazil
Zdroj:	Repositório Institucional da UFSC Universidade Federal de Santa Catarina (UFSC) instacron:UFSC Scopus-Elsevier Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
Popis:	Artigo The alkaline-carbonatite district of Lages (Santa Catarina, Brazil), contains mafic-ultramafic and prevalent leucocratic bodies mainly composed of olivine melilitites, olivine nephelinites, basanites, phonotephrites, nepheline syenites and peralkaline phonolites. Kimberlitic pipe breccias and carbonatitic rocks are also present. Petrography, mineral and bulk-rock chemistry and mass balance calculations show that differentiated leucocratic rock-types can be derived by fractional crystallization processes from basanitic magmas. Trace element and Sr-Nd isotopic data suggest metasomatized mantle sources for the primary magmas and variable crustal contamination for the more differentiated rock-types.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d71e181767c05f5ccb8eea93b643053 https://repositorio.ufsc.br/handle/123456789/189592 Zobrazit plný text záznamu