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Fletta eftir efnisorði "Jarðeðlisfræði"

Fletta eftir efnisorði "Jarðeðlisfræði"

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    Bjarnason, Ingi Þorleifur; Menke, William; Flóvenz, Ólafur G. (American Geophysical Union, 1994-09-10)
    The central question discussed by Gudmundsson [this issue] can be succinctly stated: "Is the temperature of the shallowest upper mantle of Iceland at the peridotite solidus" (nominally, 1200°C). The traditional view, as developed by numerous authors ...
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    Seismic evidence for a lower-mantle origin of the Iceland plume 
    Shen, Yang; Solomon, Sean C.; Bjarnason, Ingi Þorleifur; Wolfe, Cecily J. (Springer Nature, 1998-09)
    Iceland, one of the most thoroughly investigated hotspots1,2,3, is generally accepted to be the manifestation of an upwelling mantle plume4. Yet whether the plume originates from the lower mantle or from a convective instability at a thermal boundary ...
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    Shear wave splitting across the Iceland hot spot: Results from the ICEMELT experiment 
    Bjarnason, Ingi Þorleifur; Silver, Paul G.; Rümpker, Georg; Solomon, Sean C. (Wiley-Blackwell, 2002-12)
    We report on observations of upper mantle anisotropy from the splitting of teleseismic shear waves (SKS, SKKS, and PKS) recorded by the ICEMELT broadband seismometer network in Iceland. In a ridge-centered hot spot locale, mantle anisotropy may be ...
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    Supercritical Fluid Geochemistry in Geothermal Systems 
    Heřmanská, Matylda; Kleine, Barbara Irene; Stefansson, Andri (Hindawi Limited, 2019-08-05)
    Supercritical fluids exist in the roots of many active high-temperature geothermal systems. Utilization of such supercritical resources may multiply energy production from geothermal systems; yet, their occurrence, formation mechanism, and chemical ...
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    Temporal evolution of primordial tungsten-182 and 3He/4He signatures in the Iceland mantle plume 
    Mundl-Petermeier, A.; Walker, R.J.; Jackson, M.G.; Blichert-Toft, J.; Kurz, M.D.; Halldórsson, Sæmundur Ari (Elsevier BV, 2019-10-20)
    Studies of short-lived radiogenic isotope systems and noble gas isotopic compositions of plume-derived rocks suggest the existence of primordial domains in Earth's present-day mantle. Tungsten-182 anomalies together with high 3He/4He in Phanerozoic ...