Dr Richard Brown's Outputs (2)

A model for permeability evolution during volcanic welding (2020)
Journal Article
Wadsworth, F. B., Vasseur, J., Llewellin, E. W., Brown, R. J., Tuffen, H., Gardner, J. E., Kendrick, J. E., Lavallée, Y., Dobson, K. J., Heap, M. J., Dingwell, D. B., Hess, K.-U., Schauroth, J., von Aulock, F. W., Kushnir, A. R., & Marone, F. (2021). A model for permeability evolution during volcanic welding. Journal of Volcanology and Geothermal Research, 409, https://doi.org/10.1016/j.jvolgeores.2020.107118

Volcanic ash and pyroclasts can weld when deposited hot by pyroclastic density currents, in near-vent fall deposits, or in fractures in volcano interiors. Welding progressively decreases the permeability of the particle packs, influencing a range of... Read More about A model for permeability evolution during volcanic welding.

Deep and disturbed: conditions for formation and eruption of a mingled rhyolite at Ascension Island, south Atlantic (2020)
Journal Article
Chamberlain, K., Barclay, J., Preece, K., Brown, R., McIntosh, I., & EIMF. (2020). Deep and disturbed: conditions for formation and eruption of a mingled rhyolite at Ascension Island, south Atlantic. Volcanica, 3(1), 139-153. https://doi.org/10.30909/vol.03.01.139153

The generation of felsic melts (through open or closed system processes) within ocean island volcanoes has been a key area of study since their identification. At Ascension Island in the south Atlantic, explosively erupted felsic melts have, to date,... Read More about Deep and disturbed: conditions for formation and eruption of a mingled rhyolite at Ascension Island, south Atlantic.