Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)

The studied volcanic fields are associated with compound flows near the vents that are characterised by a tube network, sky lights, ephemeral vents and tumuli. During discontinuous activity discrete, channel-fed aa flow units in near-vent position often form fanshaped flow fields that resemble vents...

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Detalles Bibliográficos
Autores principales:	Haller, Miguel Jorge Francisco, Risso, Corina María Ana, Massaferro, Gabriela Isabel
Publicado:	2008
Materias:	burial (geology) clast coalescence geomorphology lava Africa Al Haruj al Aswad Argentina Libyan Arab Jamahiriya Mendoza North Africa South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03728854_v52_n2_p181_Nemeth http://hdl.handle.net/20.500.12110/paper_03728854_v52_n2_p181_Nemeth
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03728854_v52_n2_p181_Nemeth
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spelling	paper:paper_03728854_v52_n2_p181_Nemeth2023-06-08T15:37:49Z Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya) Haller, Miguel Jorge Francisco Risso, Corina María Ana Massaferro, Gabriela Isabel burial (geology) clast coalescence geomorphology lava Africa Al Haruj al Aswad Argentina Libyan Arab Jamahiriya Mendoza North Africa South America The studied volcanic fields are associated with compound flows near the vents that are characterised by a tube network, sky lights, ephemeral vents and tumuli. During discontinuous activity discrete, channel-fed aa flow units in near-vent position often form fanshaped flow fields that resemble vents effused by spatter-fed or clastogenic lava. These flows resulted from (a) reconstitution of fountain-generated spatter around vents by syn-depositional agglutination and coalescence, and (b) syn-eruptive collapse of rapidly grown spatter and scoria. In the studied lava shields three types of tumuli have been identified: (1) lava-coated tumuli, (2) upper-slope tumuli in near-source regions (both dominated in Libya), and (3) flowlobe tumuli in the distal areas (in all studied areas). The widespread flow-lobe tumuli in the studied fields confirm the general agreement of low lava-supply rates. Flow-lobe tumuli are interpreted to have been supplied with magma from tubes that originate in overflow from and through flank fissures connected with the lava lake of shield volcanoes. © 2008 Gebrüder Borntraeger. Fil:Haller, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Risso, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Massaferro, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03728854_v52_n2_p181_Nemeth http://hdl.handle.net/20.500.12110/paper_03728854_v52_n2_p181_Nemeth
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	burial (geology) clast coalescence geomorphology lava Africa Al Haruj al Aswad Argentina Libyan Arab Jamahiriya Mendoza North Africa South America
spellingShingle	burial (geology) clast coalescence geomorphology lava Africa Al Haruj al Aswad Argentina Libyan Arab Jamahiriya Mendoza North Africa South America Haller, Miguel Jorge Francisco Risso, Corina María Ana Massaferro, Gabriela Isabel Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
topic_facet	burial (geology) clast coalescence geomorphology lava Africa Al Haruj al Aswad Argentina Libyan Arab Jamahiriya Mendoza North Africa South America
description	The studied volcanic fields are associated with compound flows near the vents that are characterised by a tube network, sky lights, ephemeral vents and tumuli. During discontinuous activity discrete, channel-fed aa flow units in near-vent position often form fanshaped flow fields that resemble vents effused by spatter-fed or clastogenic lava. These flows resulted from (a) reconstitution of fountain-generated spatter around vents by syn-depositional agglutination and coalescence, and (b) syn-eruptive collapse of rapidly grown spatter and scoria. In the studied lava shields three types of tumuli have been identified: (1) lava-coated tumuli, (2) upper-slope tumuli in near-source regions (both dominated in Libya), and (3) flowlobe tumuli in the distal areas (in all studied areas). The widespread flow-lobe tumuli in the studied fields confirm the general agreement of low lava-supply rates. Flow-lobe tumuli are interpreted to have been supplied with magma from tubes that originate in overflow from and through flank fissures connected with the lava lake of shield volcanoes. © 2008 Gebrüder Borntraeger.
author	Haller, Miguel Jorge Francisco Risso, Corina María Ana Massaferro, Gabriela Isabel
author_facet	Haller, Miguel Jorge Francisco Risso, Corina María Ana Massaferro, Gabriela Isabel
author_sort	Haller, Miguel Jorge Francisco
title	Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
title_short	Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
title_full	Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
title_fullStr	Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
title_full_unstemmed	Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)
title_sort	morphology of lava tumuli from mendoza (argentina), patagonia (argentina), and al-haruj (libya)
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03728854_v52_n2_p181_Nemeth http://hdl.handle.net/20.500.12110/paper_03728854_v52_n2_p181_Nemeth
work_keys_str_mv	AT hallermigueljorgefrancisco morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT rissocorinamariaana morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT massaferrogabrielaisabel morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya
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Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya)

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