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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todo:paper_03728854_v52_n2_p181_Nemeth2023-10-03T15:30:12Z Morphology of lava tumuli from Mendoza (Argentina), Patagonia (Argentina), and Al-Haruj (Libya) Németh, K. Haller, M.J. Martin, U. Risso, C. Massaferro, G. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Németh, K. Haller, M.J. Martin, U. Risso, C. Massaferro, G. 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. |
| format |
JOUR |
| author |
Németh, K. Haller, M.J. Martin, U. Risso, C. Massaferro, G. |
| author_facet |
Németh, K. Haller, M.J. Martin, U. Risso, C. Massaferro, G. |
| author_sort |
Németh, K. |
| 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) |
| url |
http://hdl.handle.net/20.500.12110/paper_03728854_v52_n2_p181_Nemeth |
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AT nemethk morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT hallermj morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT martinu morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT rissoc morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya AT massaferrog morphologyoflavatumulifrommendozaargentinapatagoniaargentinaandalharujlibya |
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