Publicity and summaries of our research targeted at a general audience. For a more technical description of work I have been involved in please head over to the papers section of the site.
Hot mantle rises from Earth’s deep interior causing massive volcanic episodes when it melts to produce magmas in the shallow regions of Earth’s upper mantle. A comment piece I wrote in Nature Geosciences, discussing the results of a study by Trela et al. quantifying just how hot Earth’s mantle can get, was discussed in interview on Radio 4’s inside science.
We have shown that the Icelandic mantle is unusually hot, a result which has been featured in AGU’s Eos magazine. We measured the chemistry of olivine and spinel crystals that grew from magmas sourced directly from the Icelandic mantle. These crystals recorded crystallisation at almost 1400°C, indicating that the underlying mantle must be at least this hot. By developing a model to account for how the temperature of the mantle changes during melting, we were able to show that this crystallisation temperature is consistent with a mantle temperature prior to melting of closer to 1500°C. This is more than 160°C hotter than the mantle underlying most regions on Earth.
Read the full article on Eos: A significantly hotter mantle beneath Iceland
And head here for a more detailed summary of the science.
Our work investigating oxygen cycling between the solid earth and atmosphere has been featured in Diamond Light Source‘s news and features magazine. This article was based on data we collected in the summer of 2014 on the I18 beamline.
Read the full article at the Diamond Light Source website: From fiery giants