Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Margaret E. Hartley"'
Autor:
Emma J. Nicholson, Penny E. Wieser, Margaret E. Hartley, Frances E. Jenner, Barbara E. Kunz, Evgenia Ilyinskaya, Thorvaldur Thordarson, Marie Edmonds
Publikováno v:
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-19 (2024)
Abstract Mafic magmas may experience multiple stages of sulfide saturation and resorption during ascent and differentiation. Quenched tephra erupted during the 2014–15 Holuhraun eruption preserve abundant evidence for sulfide resorption, offering a
Externí odkaz:
https://doaj.org/article/24b551cd7447434a9521cc146f8a5b87
Autor:
Yves Moussallam, Guillaume Georgeais, Estelle F. Rose‐Koga, Kenneth T. Koga, Margaret E. Hartley, Bruno Scaillet, Clive Oppenheimer, Nial Peters
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 12, Pp n/a-n/a (2023)
Abstract The behavior of Fe3+ during mantle partial melting strongly influences the oxidation state of the resulting magmas, with implications for the evolution of the atmosphere's oxidation state. Here, we challenge a prevailing view that low‐degr
Externí odkaz:
https://doaj.org/article/02f4baa26ab44e0c87937be6b4e22ac4
Autor:
Emily C. Bamber, Giuseppe La Spina, Fabio Arzilli, Mattia de’ Michieli Vitturi, Margherita Polacci, Margaret E. Hartley, Maurizio Petrelli, Jonathan Fellowes, Mike Burton
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-17 (2022)
Large explosive eruptions of basaltic magma are promoted by low pre-eruptive temperatures in crystallising shallow magma reservoirs, according to an integrated petrological, geochemical and numerical modelling study.
Externí odkaz:
https://doaj.org/article/68c2de1f9c5341869d65196e54b843b2
Autor:
Fabio Arzilli, Margherita Polacci, Giuseppe La Spina, Nolwenn Le Gall, Edward W. Llewellin, Richard A. Brooker, Rafael Torres-Orozco, Danilo Di Genova, David A. Neave, Margaret E. Hartley, Heidy M. Mader, Daniele Giordano, Robert Atwood, Peter D. Lee, Florian Heidelbach, Mike R. Burton
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-14 (2022)
In situ 4D experiments at high temperature and moderate pressure reveal that rapid dendritic crystallization in hydrous basaltic magmas promotes a rheological transition within minutes, controlling magma mobility within the Earth’s crust.
Externí odkaz:
https://doaj.org/article/07c9fbea66a04e0bb559b4f74bf1599a
Autor:
Emma Christina Waters, Oliver Shorttle, Sæmundur Ari Halldórsson, Katsura Kobayashi, David Neave, Ray Burgess, Margaret E Hartley
The Icelandic mantle contains a range of lithologies associated with the depleted upper mantle, a mantle plume, and recycled oceanic lithosphere but the precise nature of depleted and enriched components in the mantle and their relative contributions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81455a212872fa7e95a3c5d63d993cf5
https://doi.org/10.22541/essoar.167065816.65575976/v1
https://doi.org/10.22541/essoar.167065816.65575976/v1
Autor:
Alberto Caracciolo, Guðmundur H. Guðfinnsson, Margaret E. Hartley, Sæmundur A. Halldórsson, Enikő Bali, Maren Kahl
Publikováno v:
American Mineralogist. 106:1083-1096
The timescales of magmatic processes within a volcanic system may be variable over a volcano’s geological history. Crystals reflect environmental perturbations under which they grew, and compositional gradients quenched inside crystals on eruption
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec50512f8d83f31cda594e43c5f8a4b4
https://doi.org/10.2138/am-2021-7670
https://doi.org/10.2138/am-2021-7670
Publikováno v:
Hartley, M E, De Hoog, J C M & Shorttle, O 2021, ' Boron isotopic signatures of melt inclusions from North Iceland reveal recycled material in the Icelandic mantle source ', Geochimica et Cosmochimica Acta, vol. 294, pp. 273-294 . https://doi.org/10.1016/j.gca.2020.11.013
Trace element and volatile heterogeneity in the Earth's mantle is in uenced by the recycling of oceanic lithosphere through subduction. Oceanic island basalts commonly have high concentrations of volatiles compared to mid-ocean ridge basalts, but the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a644527f4e5432c52fb8a3ee2d5f5b34
https://doi.org/10.1016/j.gca.2020.11.013
https://doi.org/10.1016/j.gca.2020.11.013
Autor:
Fabio Arzilli, Margherita Polacci, Giuseppe La Spina, Nolwenn Le Gall, Edward W. Llewellin, Richard A. Brooker, Rafael Torres-Orozco, Danilo Di Genova, David A. Neave, Margaret E. Hartley, Heidy M. Mader, Daniele Giordano, Robert Atwood, Peter D. Lee, Mike R. Burton
The mobility of basaltic magma within the Earth’s crust is controlled by magma viscosity. Crystallization and crystal morphology affect the viscosity, mobility and ultimately eruptibility of magma, by locking it at depth or enabling its ascent towa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de1cbeb23b3f596a8467a29be706a5a8
https://doi.org/10.5194/egusphere-egu22-5584
https://doi.org/10.5194/egusphere-egu22-5584
Autor:
Zoltán Taracsák, Marc-Antoine Longpré, Romain Tartèse, Ray Burgess, Marie Edmonds, Margaret E Hartley
Publikováno v:
Journal of Petrology. 63
Recent studies investigating magmatic volatile contents indicate widespread enrichment of carbon, sulfur, and halogens in ocean island basalts (OIBs). At El Hierro in the Western Canary Islands, magmas with exceptionally high CO2 and S contents have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45d112420579787b59960bb85982f60c
https://doi.org/10.1093/petrology/egac011
https://doi.org/10.1093/petrology/egac011
Autor:
Sæmundur A. Halldórsson, David A. Neave, Jóhann Gunnarsson-Robin, Z. Taracsak, Alexandra V. Turchyn, P. Beaudry, Eimf, Shuhei Ono, Margaret E. Hartley, Andri Stefánsson, Ray Burgess, Marie Edmonds, M-A. Longpre, Eemu Ranta
Publikováno v:
Taracsák, Z, Neave, D, Beaudry, P, Gunnarsson-Robin, J, Burgess, R, Edmonds, M, Halldórsson, S A, Longpré, M-A, Ono, S, Ranta, E, Stefánsson, A, Turchyn, A V & Hartley, M 2021, ' Instrumental mass fractionation during sulfur isotope analysis by secondary ion mass spectrometry in natural and synthetic glasses ', Chemical Geology, vol. 578, 120318 . https://doi.org/10.1016/j.chemgeo.2021.120318
Sulfur isotope ratios are among the most commonly studied isotope systems in geochemistry. While sulfur isotope ratio analyses of materials such as bulk rock samples, gases, and sulfide grains are routinely carried out, in-situ analyses of silicate g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f10407a7a8193a235613aabf02b87fc
https://doi.org/10.1016/j.chemgeo.2021.120318
https://doi.org/10.1016/j.chemgeo.2021.120318