Modelización de la fusión parcial en equilibrio en una fuente mantélica metasomatizada. El volcanismo Cuaternario de La Garrotxa (Cataluña)

Downloads

Downloads per month over past year

61528

Impacto

Downloads

Downloads per month over past year



Cebriá, J.M. and López Ruiz, José and Doblas Lavigne, Miguel Manuel de las and Oyarzun, Roberto (2000) Modelización de la fusión parcial en equilibrio en una fuente mantélica metasomatizada. El volcanismo Cuaternario de La Garrotxa (Cataluña). Geotemas, 1 (3). pp. 223-227. ISSN 1576-5172

[thumbnail of Páginas desdeGeotemas1_3sge-4.pdf] PDF
1MB

Official URL: http://www.sociedadgeologica.es/publicaciones_geotemas.html



Abstract

Trace element modelling together with the use of radiogenic and stable isotopic ratios, is a widely used tool to constrain the characteristics of the mantle sources of basaltic series. However, as the composition of the volcanic rocks may be the result of several combined magmatic processes, it is necessary to identify them before any attempt to their quantitative modelling. On the other hand, the information provided by partial melting modelling is limited to the final composition of the mantle source whereas some characteristics, like the presence of minor phases, can be cloaked if those minerals have not remained in the residue. A good example to illustrate the problems of this method is found in the Quaternary primitive basaltic rocks of La Garrotxa (ME Volcanic Region of Spain) which, according to a combined study o f trace element modelling and Sr-Nd-Pb isotopic ratios, can be interpreted as the result of the melting of a previously enriched lithospheric source which has been subsequently pervaded by basaltic melts derived from a common European sublithospheric reservoir.


Item Type:Article
Uncontrolled Keywords:Mantle lithosphere, Mantle metasomatism, Partial melting, Trace element modelling, NE Volcanic Province of Spain
Subjects:Sciences > Geology > Geodynamics
ID Code:61528
Deposited On:15 Jul 2020 16:14
Last Modified:15 Jul 2020 16:14

Origin of downloads

Repository Staff Only: item control page