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Fletta eftir efnisorði "Eldfjallafræði"

Fletta eftir efnisorði "Eldfjallafræði"

Röðun: Raða: Niðurstöður:

  • Berkesi, Márta; Bali, Eniko; Bodnar, Robert J.; Szabó, Ábel; Guzmics, Tibor (Elsevier BV, 2020-09)
    Oldoinyo Lengai, located in the Gregory Rift in Tanzania, is a world-famous volcano owing to its uniqueness in producing natrocarbonatite melts and because of its extremely high CO2 flux. The volcano is constructed of highly peralkaline [PI = molar ...
  • Dürig, Tobias; White, J. D. L.; Murch, A. P.; Zimanowski, B.; Büttner, R.; Mele, D.; Dellino, P.; Carey, R. J.; Schmidt, L. S.; Spitznagel, N. (Springer Science and Business Media LLC, 2020-06-29)
    The majority of Earth’s volcanic eruptions occur beneath the sea, but the limited number of direct observations and samples limits our understanding of these unseen events. Subaerial eruptions lend some insight, but direct extrapolation from the subaerial ...
  • Dürig, Tobias; White, J. D. L.; Zimanowski, B.; Büttner, R.; Murch, A.; Carey, R. J. (Springer Science and Business Media LLC, 2020-09-30)
    In 2012, the eruption of deep-sea volcano Havre produced an abundance of fine ash at a depth of ~ 1000 m below sea level. In this study the 2D shapes of Havre ash grains retrieved from the seafloor were compared quantitatively with those of particles ...
  • Pedersen, Gro; Höskuldsson, Ármann; Dürig, Tobias; Thordarson, Thorvaldur; Jonsdottir, Ingibjorg; Riishus, M. S.; Óskarsson, B.V.; Dumont, Stéphanie; Magnússon, Eyjólfur; Gudmundsson, Magnus Tumi; Sigmundsson, Freysteinn; Drouin, V.J.P.B.; Gallagher, C.; Askew, R.; Gudnason, J.; Moreland, William; Nikkola, P.; Reynolds, Hannah Iona; Schmith, Johanne (Elsevier BV, 2017-06)
    The 6-month long eruption at Holuhraun (August 2014–February 2015) in the Bárðarbunga-Veiðivötn volcanic system was the largest effusive eruption in Iceland since the 1783–1784 CE Laki eruption. The lava flow field covered ~84 km2 and has an estimated ...
  • Sigmarsson, Olgeir; Bergþórsdóttir, Ingibjörg A.; Devidal, Jean-Luc; Larsen, Guðrún; Gannoun, Abdelmouhcine (Springer Nature, 2022-01-07)
    Timescales of magma transfer and differentiation processes can be estimated when the magma differentiation mechanism is known. When conventional major and trace element analyses fail to distinguish between various processes of magma differentiation, ...
  • Dürig, Tobias; Ross, Pierre-Simon; Dellino, Pierfrancesco; White, James D. L.; Mele, Daniela; Comida, Pier Paolo (Springer Nature, 2021-10-30)
    Morphometric analyses are based on multiparametric datasets that describe quantitatively the shapes of objects. The stochastic nature of fracture-formation processes that break up magma during explosive eruptions yields mixtures of particles that have ...
  • Caudron, Corentin; White, Robert S.; Green, Robert G.; Woods, Jennifer; Agustsdottir, Thorbjorg; Donaldson, Clare; Greenfield, Tim; Rivalta, Eleonora; Brandsdóttir, Bryndís (American Geophysical Union (AGU), 2018-01)
    Magma is transported in brittle rock through dikes and sills. This movement may be accompanied by the release of seismic energy that can be tracked from the Earth's surface. Locating dikes and deciphering their dynamics is therefore of prime importance ...
  • Ross, Pierre-Simon; Dürig, Tobias; Comida, Pier Paolo; Lefebvre, Nathalie; White, James D. L.; Andronico, Daniele; Thivet, Simon; Eychenne, Julia; Gurioli, Lucia; Dürig, Tobias (Springer Nature, 2021-12-27)
    Juvenile pyroclasts, especially in the ash size range, provide important information on primary fragmentation processes, i.e., initial explosive magma fragmentation, and on the state of the magma both prior to and at the point of fragmentation and ...
  • Comida, Pier Paolo; Ross, Pierre-Simon; Dürig, Tobias; White, James D. L.; Lefebvre, Nathalie (Springer Nature, 2021-12-27)
    The morphological and textural features of juvenile pyroclasts record crucial details on magma conditions at the time of fragmentation. Their study is therefore essential to better understand the dynamics of explosive eruptions. Unfortunately, the ...
  • Hjartardóttir, Ásta Rut; Einarsson, Páll (Elsevier, 2021-09)
    The Hofsjökull volcanic system is located at the northern border of the Hreppar microplate on the Mid-Atlantic plate boundary in Iceland, between the more active Western and Eastern volcanic zones. In this study, fractures, and faults within the fissure ...