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Heterogeneous vesic...
Heterogeneous vesiculation of 2011 El Hierro xeno-pumice revealed by X-ray computed microtomography
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- Berg, Sylvia E., 1986- (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik
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- Troll, Valentin R. (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik,Univ Las Palmas Gran Canaria, GEOVOL, Las Palmas Gran Canaria, Spain
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- Deegan, Frances M. (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik
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- Burchardt, Steffi (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik
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- Krumbholz, Michael (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik,Georg August Univ Gottingen, Geosci Ctr, Goldschmidtstr 1-3, D-37077 Gottingen, Germany
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- Mancini, Lucia (författare)
- SCpA, Elettra Sincrotrone Trieste, SS 14 Km 163,5 AREA Sci Pk, I-34149 Trieste, Italy
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- Polacci, Margherita (författare)
- Univ Manchester, Sch Earth & Environm Sci, Williamson Bldg,Oxford Rd, Manchester M13 9PL, Lancs, England
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- Carracedo, Juan Carlos (författare)
- Univ Las Palmas Gran Canaria, GEOVOL, Las Palmas Gran Canaria, Spain
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- Soler, Vicente (författare)
- CSIC, Estn Vulcanol Canarias, Avda Astr Fco Sanchez 3, Tenerife 38206, Spain
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- Arzilli, Fabio (författare)
- SCpA, Elettra Sincrotrone Trieste, SS 14 Km 163,5 AREA Sci Pk, I-34149 Trieste, Italy.; Univ Manchester, Sch Earth & Environm Sci, Williamson Bldg,Oxford Rd, Manchester M13 9PL, Lancs, England
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- Brun, Francesco (författare)
- SCpA, Elettra Sincrotrone Trieste, SS 14 Km 163,5 AREA Sci Pk, I-34149 Trieste, Italy.; Univ Trieste, Dept Engn & Architecture, Via A Valerio 10, I-34127 Trieste, Italy
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(creator_code:org_t)
- 2016-11-14
- 2016
- Engelska.
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Ingår i: Bulletin of Volcanology. - : Springer Science and Business Media LLC. - 0258-8900 .- 1432-0819. ; 78:12
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https://uu.diva-port... (primary) (Raw object)
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https://link.springe...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- During 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.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Nyckelord
- El Hierro
- Xeno-pumice
- X-CT imaging
- Vesicle morphologies
- Vesicle size distribution
- Heterogeneous vesiculation
- Sedimentary ocean crust
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Berg, Sylvia E., ...
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Troll, Valentin ...
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Deegan, Frances ...
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Burchardt, Steff ...
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Krumbholz, Micha ...
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Mancini, Lucia
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visa fler...
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Polacci, Margher ...
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Carracedo, Juan ...
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Soler, Vicente
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Arzilli, Fabio
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Brun, Francesco
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