Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/234853
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Magma differentiation and contamination: Constraints from experimental and field evidences |
Autor: | Castro Dorado, Antonio CSIC ORCID; Rodríguez, Carmen CSIC ORCID ; Díaz–Alvarado, J.; Fernández, Carlos CSIC; García Moreno, Olga CSIC ORCID | Palabras clave: | Experimental petrology Batholiths Fractionation Magma 18 crystallization Magma contamination |
Fecha de publicación: | 2020 | Editor: | American Geophysical Union | Citación: | Crustal Magmatic System Evolution: Anatomy, Architecture and Physics-Chemical Processes: 107-124 (2020) | Serie: | Geophysical Monograph Series | Resumen: | Differentiation and contamination of silicic magmas are common phenomena characterizing the granite batholiths and large igneous provinces that build up most of the continental crust. Although they can be identified by means of geochemical relations of igneous rocks exposed in the continents, the mechanisms allowing magmas to undergo the necessary crystal–liquid separation and digestion of country rocks for differentiation and contamination are poorly constrained. In this paper we show two independent approaches that are essential to understand fractionation and contamination of magmas. These are (1) the study and interpretation of field relations in exposed deep sections of batholiths, and (2) the results of laboratory experiments carried out at middle–upper crust pressure. Experiments support that fractionation is intrinsic to crystallization of water-bearing magmas in thermal boundary layers created at the sidewalls of ascent conduits and walls of magma chambers. Gravitational collapse and fluid migration are processes identified in experimental capsules. Similarly, reaction experiments in mixed capsules support reactive bulk assimilation as a plausible mechanism that is compatible with field and petrographic observations in contaminated granitic rocks. | Descripción: | Earth and Space Science Open Archive. | Versión del editor: | https://doi.org/10.1002/essoar.10504608.1 | URI: | http://hdl.handle.net/10261/234853 | DOI: | 10.1002/essoar.10504608.1 | ISBN: | 978-1119564454 |
Aparece en las colecciones: | (CINN) Libros y partes de libros (IACT) Libros y partes de libros |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
magmaevid.pdf | 5,77 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
120
checked on 24-abr-2024
Download(s)
456
checked on 24-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.