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  • 1
    Online Resource
    Online Resource
    Monogenetic volcanism (2017)
    London : The Geological Society
    Details Availability
    Keywords: Volcanism ; Volcanism ; Electronic book ; Vulkanismus
    Description / Table of Contents: 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
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (374 Seiten) , Illustrationen
    Series Statement: Geological Society special publication no. 446
    URL: http://VH7QX3XE2P.search.serialssolutions.com/?V=1.0&L=VH7QX3XE2P&S=JCs&C=TC0001873740&T=marc&tab=BOOKS
    URL: https://sp.lyellcollection.org/content/446/1
    URL: https://doi.org/10.1144/SP446
    DOI: 10.1144/SP446
    DDC: 551.21
    Language: English
    Note: Includes bibliographical references and index
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  • 2
    Electronic Resource
    Electronic Resource
    Petrology of recrystallized ultramafic xenoliths from Merelava volcano, Vanuatu (1989)
    Springer
    Contributions to mineralogy and petrology 102 (1989), S. 230-241 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Xenoliths in primitive olivine tholeiite lavas from Merelava Volcano, Vanuatu, include recrystallized wehrlites and harzburgites characterized by extremely fine grain size (0.02–2 mm) and equigranular textures. The harzburgites display mineral segregations, have highly variable ratios of ol: opx, minor clinopyroxene and accessory Cr-spinel, and are interpreted as the residues of high degrees of melting of upper mantle peridotite. Annealed Cr-spinel aggregates in harzburgite sample # 31564B enclose numerous small inclusions of sodic sanidine and minor plagioclase, attributed to infiltration of the harzburgite by a residual melt derived from an earlier period of island arc magmatism. The recrystallized wehrlites have high ol/cpx ratios and depleted REE patterns compatible with a cumulus origin. The refractory nature of the phases in both groups of recrystallized xenoliths compares closely with phases in ‘Alpine-type’ peridotites and primitive arc lavas, and is incompatible with compositions of abyssal peridotites. The recrystallized wehrlites give equilibration temperatures of 1070–1130° C and are interpreted as cumulates derived from an earlier period of Vanuatu Arc magmatism. The range of composition displayed by phases in the harzburgites is greater than phase variation in the wehrlites, and reflects a more complex thermal history. Textural, mineralogical, and geothermometric considerations indicate the harzburgites underwent cooling to 800°/900° C before being re-heated to 1000–1100° C by the current magmatic regime. A shallow crustal origin for these xenoliths is indicated by gravity data and tectonic considerations which strongly imply the presence of an ophiolite body beneath Merelava, representing the northward extension of the Pentecost Ophiolite. These interpretations are compatible with a published model for generation of the host basalts by partial melting at the crust/mantle boundary (ca. 17 km). Sr isotopic data show that the harzburgites are incompatible with residues of ocean-floor magmatism, or with residues of Merelava and Central Chain magmatism, but suggest an affinity with Vitiaz Arc magmatism of Eocene-lower Miocene age. Both groups of xenoliths were apparently entrained from wall rocks during ascent of the host magmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00375343
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  • 3
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    Relating magma composition to eruption variability at andesitic volcanoes: A case study from Mount Taranaki, New Zealand (2011)
    Geological Society of America (GSA)
    Details
    Publication Date: 2011-09-01
    Description: Acquiring accurate eruption records and understanding the volcanic processes behind eruption periodicity are important in the development of realistic hazard assessments and volcanic emergency planning. Here, we use a detailed study of the Holocene ( 0.5 km3) eruptions appear to be statistically predictable because they tend to occur just prior to a period of repose, and they erupt the most strongly evolved magmas. The fundamental properties of magma-volcano systems identified here offer a paradigm for constraining the time scales and nature of magmatic processes, in addition to providing a foundation for more robust probabilistic time-varying hazard forecasts.
    Print ISSN: 0016-7606
    Electronic ISSN: 1943-2674
    Topics: Geosciences
    Published by Geological Society of America (GSA)
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