Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Madeleine C. S. Humphreys"'
Autor:
Annabelle Foster, Fabian B. Wadsworth, Hugh Tuffen, Holly E. Unwin, Madeleine C. S. Humphreys
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Silicic lavas can be produced by the sintering of pyroclasts in the volcanic sub-surface, and then advected out of the vent. Here, we provide evidence for this mechanism preserved in the exposed post-glacial remnants of a silicic volcanic co
Externí odkaz:
https://doaj.org/article/64aa01c778634760add89e9397ad9c61
Autor:
Christian Tegner, Lars Peter Salmonsen, Marian B. Holness, Charles E. Lesher, Madeleine C. S. Humphreys, Peter Thy, Troels F. D. Nielsen
Publikováno v:
GEUS Bulletin, Vol 53, Pp 1-8 (2023)
We report a compilation of new and published whole-rock major and trace element analyses for 646 samples of the Skaergaard intrusion, East Greenland. The samples were collected in 14 stratigraphic profiles either from accessible and well-exposed surf
Externí odkaz:
https://doaj.org/article/e66684e734f94018b7db480880b161d0
Autor:
M Cassidy, Madeleine C. S. Humphreys, Tamsin A. Mather, Philipp Ruprecht, Alexander A. Iveson, Jonathan M. Castro, C Helo, D Pyle
Publikováno v:
American Mineralogist. 107:1825-1839
The conditions under which halogens partition in favor of an exsolved fluid relative to the coexisting melt are key for understanding many magmatic processes, including volcanic degassing, evolution of crustal melt bodies, and ore formation. We repor
Autor:
Martin F. Mangler, Madeleine C. S. Humphreys, Fabian B. Wadsworth, Alexander A. Iveson, Michael D. Higgins
Publikováno v:
Contributions to Mineralogy and Petrology, 2022, Vol.177(6), pp.64 [Peer Reviewed Journal]
Volcanic rocks commonly display complex textures acquired both in the magma reservoir and during ascent to the surface. While variations in mineral compositions, sizes and number densities are routinely analysed to reconstruct pre-eruptive magmatic h
Autor:
Eloïse Bretagne, Fabian B. Wadsworth, Jérémie Vasseur, Donald B. Dingwell, Katherine J. Dobson, Madeleine C. S. Humphreys, Shane Rooyakkers
Publikováno v:
EGU General Assembly 2022
Large-volume rhyolitic eruptions are characteristically crystal-poor yet are thought to originate from crystal rich magma mush bodies. This contradiction is explained by the interstitial melt being extracted prior to the eruption, generating large vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ba672d58fabf002772646debc3bee54
https://strathprints.strath.ac.uk/81663/1/Bretagne_etal_EGU22_The_permeability_of_loose_magma.pdf
https://strathprints.strath.ac.uk/81663/1/Bretagne_etal_EGU22_The_permeability_of_loose_magma.pdf
Autor:
Alexander A Iveson, Madeleine C S Humphreys, Frances E Jenner, Barbara E Kunz, Ivan P Savov, Jan C M De Hoog, Tatiana G Churikova, Boris N Gordeychik, Samantha J Hammond, Pavel Yu Plechov, Jon Blundy, Samuele Agostini
Publikováno v:
Iveson, A A, Humphreys, M C S, Jenner, F E, Kunz, B E, Savov, I P, De hoog, J C M, Churikova, T G, Gordeychik, B N, Hammond, S J, Plechov, P Y, Blundy, J & Agostini, S 2022, ' Tracing Volatiles, Halogens, and Chalcophile Metals during Melt Evolution at the Tolbachik Monogenetic Field, Kamchatka ', Journal of Petrology, vol. 63, no. 9 . https://doi.org/10.1093/petrology/egac087
Journal of petrology, 2022, Vol.63(9) [Peer Reviewed Journal]
Journal of petrology, 2022, Vol.63(9) [Peer Reviewed Journal]
Melt storage and supply beneath arc volcanoes may be distributed between a central stratovolcano and wider fields of monogenetic cones, indicating complex shallow plumbing systems. However, the impact of such spatially variable magma storage conditio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dc7129159ee1c159676fa2782e3ee70
http://oro.open.ac.uk/84919/1/84919.pdf
http://oro.open.ac.uk/84919/1/84919.pdf
Autor:
Jason P. Coumans, Madeleine C. S. Humphreys, Marcus Nowak, Edward W. Llewellin, Iona McIntosh, Richard A. Brooker, Simon A. Mathias
Publikováno v:
Geochimica et cosmochimica acta, 2020, Vol.276, pp.219-238 [Peer Reviewed Journal]
Coumans, J P, Llewellin, E, Humphreys, M C S, Nowak, M, Brooker, R A, Mathias, S A & McIntosh, I M 2020, ' An experimentally-validated numerical model of diffusion and speciation of water in rhyolitic silicate melt ', Geochimica et Cosmochimica Acta, vol. 276, pp. 219-238 . https://doi.org/10.1016/j.gca.2020.02.026
Coumans, J P, Llewellin, E, Humphreys, M C S, Nowak, M, Brooker, R A, Mathias, S A & McIntosh, I M 2020, ' An experimentally-validated numerical model of diffusion and speciation of water in rhyolitic silicate melt ', Geochimica et Cosmochimica Acta, vol. 276, pp. 219-238 . https://doi.org/10.1016/j.gca.2020.02.026
The diffusion of water through silicate melts is a key process in volcanic systems. Diffusion controls the growth of the bubbles that drive volcanic eruptions and determines the evolution of the spatial distribution of dissolved water during and afte
Autor:
J.C.M. De Hoog, Richard A. Brooker, Michael J. Stock, Madeleine C. S. Humphreys, Jason P. Coumans, Victoria C. Smith, Jenny M. Riker
Publikováno v:
Humphreys, M C S, Smith, V C, Coumans, J P, Riker, J M, Stock, M J, De Hoog, C-J & Brooker, R 2021, ' Rapid pre-eruptive mush reorganisation and atmospheric volatile emissions from the 12.9 ka Laacher See eruption, determined using apatite ', Earth and Planetary Science Letters, vol. 576, 117198 . < https://www.sciencedirect.com/science/article/pii/S0012821X21004532 >
Humphreys, M C S, Smith, V C, Coumans, J P, Riker, J M, Stock, M J, de Hoog, C-J & Brooker, R A 2021, ' Rapid pre-eruptive mush reorganisation and atmospheric volatile emissions from the 12.9 ka Laacher See eruption, determined using apatite ', Earth and Planetary Science Letters, vol. 576, 117198 . https://doi.org/10.1016/j.epsl.2021.117198
Earth and Planetary Science Letters, 2021, Vol.576, pp.117198 [Peer Reviewed Journal]
Earth and Planetary Science Letters
Humphreys, M C S, Smith, V C, Coumans, J P, Riker, J M, Stock, M J, de Hoog, C-J & Brooker, R A 2021, ' Rapid pre-eruptive mush reorganisation and atmospheric volatile emissions from the 12.9 ka Laacher See eruption, determined using apatite ', Earth and Planetary Science Letters, vol. 576, 117198 . https://doi.org/10.1016/j.epsl.2021.117198
Earth and Planetary Science Letters, 2021, Vol.576, pp.117198 [Peer Reviewed Journal]
Earth and Planetary Science Letters
Magma is commonly thought to be stored as a crystal-rich mush within vertically extensive, crustal storage regions. A key unknown is how to remobilise and erupt such crystal-rich material, and whether the growth of gas bubbles within the mush could p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5724b92bb93e1dc06014e86c564d59b8
https://hdl.handle.net/20.500.11820/4ce583f5-76cd-4881-b137-68eb20f70bf1
https://hdl.handle.net/20.500.11820/4ce583f5-76cd-4881-b137-68eb20f70bf1
Publikováno v:
Goldschmidt2021 abstracts.
Autor:
Peter Ulmer, Michel Pichavant, Jon D Blundy, Richard A. Brooker, Catherine McCammon, Elena Melekhova, Madeleine C. S. Humphreys, Luca Ziberna, Valerio Cerantola
Publikováno v:
Contributions to Mineralogy and Petrology, 175 (11)
Contributions to Mineralogy and Petrology
Contributions to Mineralogy and Petrology, Springer Verlag, 2020, 175 (11), ⟨10.1007/s00410-020-01736-7⟩
Contributions to mineralogy and petrology, 2020, Vol.175(11), pp.103 [Peer Reviewed Journal]
Contributions to Mineralogy and Petrology
Contributions to Mineralogy and Petrology, Springer Verlag, 2020, 175 (11), ⟨10.1007/s00410-020-01736-7⟩
Contributions to mineralogy and petrology, 2020, Vol.175(11), pp.103 [Peer Reviewed Journal]
The Fe–Mg exchange coefficient between olivine (ol) and melt (m), defined as$${\text{Kd}}_{{{\text{Fe}}^{T} {-} {\text{Mg}}}}$$KdFeT-Mg = (Feol/Fem)·(Mgm/Mgol), with all FeTexpressed as Fe2+, is one of the most widely used parameters in petrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59c6ca10a4760aa9507f9537d8520a5c
http://hdl.handle.net/11368/2977933
http://hdl.handle.net/11368/2977933