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Showing 1–6 of 6 results
Advanced filters: Author: Marcel Regelous Clear advanced filters

  • The continents are thought to insulate and heat the underlying mantle. Geochemical analyses of lava samples formed at a mid-ocean ridge in the Atlantic Ocean immediately after continental breakup show that the mantle was up to 150 °C hotter than today and took about 70 million years to cool.

    • Philipp A. Brandl
    • Marcel Regelous
    • Karsten M. Haase
    Research
    Nature Geoscience
    Volume: 6, P: 391-394

  • Combining sedimentary Pa/Th with ESM simulations allowed quantitative estimates of past AMOC largescale strengths. The AMOC reinvigorated after the last glacial, weakened during meltwater events and reached its stable state after ~6.5 ka BP.

    • Lukas Gerber
    • Jörg Lippold
    • Frerk Pöppelmeier
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-12

  • Examination of the Easter hotspot reveals it as part of a vast, deep-seated mantle system, influencing seafloor spreading and shaping the Pacific Ocean, which challenges the view of hotspots as isolated volcanic centres.

    • John M. O’Connor
    • Marcel Regelous
    • Daniel E. Heaton
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-16

  • Low seismic velocity anomalies reveal a complex scenario of plume upwellings from a deep thermo-chemical anomaly (superplume) in the mantle below the East African Rift, however, geophysical observations alone are insufficient to identify the extent of plume influence on the magmatism along the rift. Here, the authors use Sr-Nd-Pb isotope data to show that superplume mantle underlies the entire rift system, from the Red Sea to the Indian Ocean south of Mozambique.

    • John M. O’Connor
    • Wilfried Jokat
    • Anthony A. P. Koppers
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-13

  • The oceanic plateau of the Rio Grande Rise, South Atlantic, was formed by mantle plume- and rift-related volcanism and shows no evidence of a continental crustal component, according to petrological and geochemical analyses of dredged volcanic rocks.

    • Patrick A. Hoyer
    • Karsten M. Haase
    • Wilfried Jokat
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 3, P: 1-10