Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes. (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes. (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.lithos.2013.09.013 (literal)

Alternative label

• Marzoli A. [1,6], Jourdan F. [2], Bussy F.[3], Chiaradia M. [4], Costa F. [4] (2014)
  Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes.
  in Lithos (Oslo. Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Marzoli A. [1,6], Jourdan F. [2], Bussy F.[3], Chiaradia M. [4], Costa F. [4] (literal)

Pagina inizio

• 44 (literal)

Pagina fine

• 59 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.journals.elsevier.com/lithos/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 188 (literal)

Rivista

• Lithos (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 16 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• [1]Dipartimento di Geoscienze, Università di Padova, Italy [2] Department of Applied Geology, Curtin University, WA6102 Bentley, Australia [3] Institute of Earth Sciences (ISTE), Geopolis, University of Lausanne, CH-1015 Lausanne, Switzerland [4] Department of Earth Sciences, University of Geneva, 13 Rue des Maraîchers, 1205 Genève 4, Switzerland [5] Earth Observatory of Singapore, Nanyang Technological University, Singapore [6] IGG-CNR, Padova, Italy (literal)

Titolo

• Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes. (literal)

Abstract

• The petrogenesis of the Kerforne dyke tholeiitic basalts (Brittany, France), the northernmost outcrop of the 200 Ma Central Atlantic magmatic province (CAMP), is constrained by its zoned augite and plagioclase crystals. Augite cores with high Mg/Fe and Cr suggest crystallization from near-primary magmas, with slightly enriched Rare Earth element (REE) patterns. Plagioclase crystals with high-An (An85) rounded cores are MgO- and K-rich, REE-poor, and display 87Sr/86Sr200Ma (0.7058) significantly higher than those of the surrounding ground-mass (0.7052-0.7053) suggesting open-system evolution processes. We propose a differentiation process involving mixing of different mafic magmas which occurred in less than a few hundred years judging from the lack of diffusive re-equilibration of major and trace elements in augite and of 87Sr/86Sr200Ma in plagioclase cores. The relatively large range of incompatible element contents and ratios of observed and calculated magmas are possibly due to fractional crystallization and to moderate amounts of crustal contamination which affected the more primitive magmas in particular. The calculated magmas reach near-primitive compositions and suggest that they originated from melting of a spinel peridotite slightly enriched in LREE vs. HREE. (literal)

Prodotto di

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Metodologie integrate per la conoscenza di processi e materiali geologici e del loro impatto sull'uomo e l'ambiente (TA.P04.014.002) (Modulo)

Autore CNR

• andrea marzoli (Persona)

Insieme di parole chiave

• Keywords of "Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes." (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Metodologie integrate per la conoscenza di processi e materiali geologici e del loro impatto sull'uomo e l'ambiente (TA.P04.014.002) (Modulo)

Autore CNR di

• andrea marzoli (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Lithos (Rivista)

Insieme di parole chiave di

• Keywords of "Petrogenesis of tholeiitic basalts from the Central Atlantic magmatic province as revealed by mineral major and trace elements and Sr isotopes." (Insieme di parole chiave)