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Showing 1–14 of 14 results
Advanced filters: Author: Thomas M. Gernon Clear advanced filters

  • Kimberlites are volatile-rich magmas that form diverging pipes containing pelletal lapilli - well rounded clasts that consist of an inner seed particle. Gernonet al. suggest that pelletal lapilli are formed when fluid volatile-rich melts intrude into earlier volcaniclastic infill close to the diatreme root zone.

    • T.M. Gernon
    • R.J. Brown
    • T.K. Hincks
    Research
    Nature Communications
    Volume: 3, P: 1-7

  • Reconciling the Snowball Earth hypothesis with sedimentological cyclicity has been a persistent challenge. A new cyclostratigraphic climate record for a Cryogenian banded iron formation in Australia provides evidence for orbital forcing of ice sheet advance and retreat cycles during Snowball Earth.

    • Ross N. Mitchell
    • Thomas M. Gernon
    • Xiaofang He
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • By integrating geological observations, statistical analysis, geodynamic simulations and landscape-evolution models, a physical model is proposed to link the coevolution of craton margins and interiors with continental rifting.

    • Thomas M. Gernon
    • Thea K. Hincks
    • Anne Glerum
    ResearchOpen Access
    Nature
    Volume: 632, P: 327-335

  • Earth’s surface temperature is stabilized by the drawdown of CO2 owing to weathering of continental arcs, whose length is shown to be a primary control on global weathering fluxes, according to a probabilistic analysis of interdependencies.

    • Thomas M. Gernon
    • Thea K. Hincks
    • R. Dietmar Müller
    Research
    Nature Geoscience
    Volume: 14, P: 690-696

  • The mantle upwelling beneath the Afar rift may be influenced by tectonic processes in the overriding lithospheric plates that shape the distribution of both the compositional heterogeneities and abundance of melt, according to a geochemical and statistical study of volcanic samples.

    • Emma J. Watts
    • Rhiannon Rees
    • Thomas M. Gernon
    ResearchOpen Access
    Nature Geoscience
    Volume: 18, P: 661-669

  • Most kimberlites erupting in the past billion years on Earth did so about 30 million years after continental breakup, with dynamical and analytical models suggesting a control from rifting-related mantle delamination.

    • Thomas M. Gernon
    • Stephen M. Jones
    • Anne Glerum
    ResearchOpen Access
    Nature
    Volume: 620, P: 344-350

  • Increased volcanism-related phosphorus delivery to the Late Ordovician ocean helps explain widespread cooling and eutrophication-driven extinctions, as shown by a biogeochemical model incorporating volcanic ash phosphorus and carbon isotope records.

    • Jack Longman
    • Benjamin J. W. Mills
    • Martin R. Palmer
    Research
    Nature Geoscience
    Volume: 14, P: 924-929

  • Colonization of continents by plants some 430 Myr ago enhanced the complexity of weathering and sedimentary systems, and altered the composition of continental crust, according to statistical assessment of zircon compositions.

    • Christopher J. Spencer
    • Neil S. Davies
    • Gui-Mei Lu
    Research
    Nature Geoscience
    Volume: 15, P: 735-740

  • Subaerial volcanism may provide an important source of micronutrients to the surface ocean through the deposition of iron and manganese rich ash, according to Monte Carlo simulations based on ash composition and eruption volume data.

    • Jack Longman
    • Martin R. Palmer
    • Morgan T. Jones
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 3, P: 1-8