English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/184016
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Heterogeneous vesiculation of 2011 El Hierro xeno-pumice revealed by X-ray computed microtomography

AuthorsBerg, S. E.; Troll, Valentín R.; Deegan, Frances M.; Burchardt, Steffi; Krumbholz, M.; Mancini, L.; Polacci, M.; Carracedo, Juan Carlos ; Soler, Vicente ; Arzilli, F.; Brun, F
KeywordsSedimentary ocean crust
Xeno-pumice
El Hierro
Heterogeneous vesiculation
Vesicle size distribution
Vesicle morphologies
X-CT imaging
Issue DateDec-2016
PublisherSpringer
CitationBulletin of Volcanology 78: 85 (2016)
AbstractDuring the first week of the 2011 El Hierro submarine eruption, abundant light-coloured pumiceous, high-silica volcanic bombs coated in dark basanite were found floating on the sea. The composition of the light-coloured frothy material (‘xeno-pumice’) is akin to that of sedimentary rocks from the region, but the textures resemble felsic magmatic pumice, leaving their exact mode of formation unclear. To help decipher their origin, we investigated representative El Hierro xeno-pumice samples using X-ray computed microtomography for their internal vesicle shapes, volumes, and bulk porosity, as well as for the spatial arrangement and size distributions of vesicles in three dimensions (3D). We find a wide range of vesicle morphologies, which are especially variable around small fragments of rock contained in the xeno-pumice samples. Notably, these rock fragments are almost exclusively of sedimentary origin, and we therefore interpret them as relicts an the original sedimentary ocean crust protolith(s). The irregular vesiculation textures observed probably resulted from pulsatory release of volatiles from multiple sources during xeno-pumice formation, most likely by successive release of pore water and mineral water during incremental heating and decompression of the sedimentary protoliths.
Publisher version (URL)https://doi.org/10.1007/s00445-016-1080-x
URIhttp://hdl.handle.net/10261/184016
DOI10.1007/s00445-016-1080-x
ISSN0258-8900
E-ISSN1432-0819
Appears in Collections:(IPNA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.