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  • Ignimbrites  (1)
  • Vulkanismus  (1)
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  • 1
    Schlagwort(e): Volcanism ; Volcanism ; Electronic book ; Vulkanismus
    Beschreibung / Inhaltsverzeichnis: Source to surface model of monogenetic volcanism: a critical review /I. E. M. Smith and K. Németh --Phreatomagmatic maar-diatreme volcanoes and their incremental growth: a model /Volker Lorenz, Peter Suhr and Stefan Suhr --Morphometric analysis of scoria cones: the potential for inferring process from shape /Karen G. Bemis and Margot Ferencz --Differences and similarities between emplacement models of kimberlite and basaltic maar-diatreme volcanoes /Stephan Kurszlaukis and Volker Lorenz --The dynamics of a very large intra-plate continental basaltic volcanic province, the Newer Volcanics Province, SE Australia, and implications for other provinces /R. A. F. Cas, J. van Otterloo, T. N. Blaikie and J. van den Hove /Geology and geochemistry of Late Quaternary volcanism in northern Harrat Rahat, Kingdom of Saudi Arabia: implications for eruption dynamics, regional stratigraphy and magma evolution /H. Murcia, J. M. Lindsay, K. Németh, I. E. M. Smith, S. J. Cronin, M. R. H. Moufti, N. N. El-Masry and S. Niedermann --Monogenetic v. polygenetic kimberlite volcanism: in-depth examination of the Tango Extension Super Structure, Attawapiskat kimberlite field, Ontario, Canada /Alexandrina Fulop and Stephan Kurszlaukis --Structural evidence of enhanced active subsidence at the bottom of a maar: Rincón de Parangueo, México /José Jorge Aranda-Gómez, Mariano Cerca, Luis Rocha-Treviño, Jaime Jesús Carrera-Hernández, Gilles Levresse, Jesús Pacheco, Vsevolod Yutsis, Jorge Arturo Arzate-Flores, Elizabeth Chacón and Hugo Beraldi-Campesi
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (374 Seiten) , Illustrationen
    Serie: Geological Society special publication no. 446
    DDC: 551.21
    Sprache: Englisch
    Anmerkung: Includes bibliographical references and index
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Bulletin of volcanology 60 (1999), S. 448-464 
    ISSN: 1432-0819
    Schlagwort(e): Key words Mexican volcanoes ; Citlaltépetl ; Ignimbrites ; Fluidization ; SFT ; Mechanisms of transport and emplacement
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract  The Citlaltépetl Ignimbrite records one of the largest explosive events during the Holocene activity of Citlaltépetl Volcano (Pico de Orizaba). Multiple pyroclastic flow units, a fall deposit, and some lahar units were emplaced between 8500–9000 y B.P. as a result of repetitive but discrete explosive events. The whole ignimbrite resulted from discrete fluctuations in eruptive intensity that decreased with time. The initial pyroclastic flow pulse was by far the most violent and widespread event, and its deposits show conspicuous variations in structure and texture that could be associated with different mechanisms of transport and emplacement. Subpopulation Sequential Fragmentation Transport (SFT) analyses were carried out in order to determine the physical mechanisms that selectively concentrate or remove particles in the moving flows. We suggest that lateral and temporal changes in the flow rheology, in which fluidization, yield strength, entrainment of atmospheric air, and sedimentation played a dominant role in flow propagation and emplacement, may imprint a unique signature in the grain-size spectra. The lowermost unit of the Citlaltépetl Ignimbrite can be envisaged by a model in which progressive aggradation near the vent became replaced by en masse emplacement farther outward.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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