Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Gudmundur H. Gudfinnsson"'
Publikováno v:
Journal of Petrology
Journal of Petrology, 2022, 63 (8), pp.1-27. ⟨10.1093/petrology/egac069⟩
Journal of Petrology, 2022, 63 (8), pp.1-27. ⟨10.1093/petrology/egac069⟩
Melting phase relations involving model carbonated basalt with excess silica were studied in experiments over the pressure range of 4–7 GPa in the system CaO-MgO-Al2O3-SiO2-CO2 to determine if there is a sharp decrease in the melting temperatures a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a96a95253afdf40debb0613c325ec771
https://uca.hal.science/hal-03814681/file/egac069.pdf
https://uca.hal.science/hal-03814681/file/egac069.pdf
Autor:
Olgeir Sigmarsson, Edward W. Marshall, Chantal Bosq, Delphine Auclair, Maja B. Rasmussen, Barbara I. Kleine, Eemu J. Ranta, Simon Matthews, Sæmundur A. Halldórsson, Matthew G. Jackson, Gudmundur H. Gudfinnsson, Enikö Bali, Andri Stefánsson, Magnús T. Gudmundsson
Mantle melting processes and the characteristics of the source lithologies are mostly derived from basalt compositions of the mid-ocean ridge system and from oceanic islands. However, these basalts are in most cases the products of crustal processes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b381042055cf66d6285bfddd03e4c5df
https://doi.org/10.5194/egusphere-egu22-8479
https://doi.org/10.5194/egusphere-egu22-8479
Autor:
Quinten H. A. van der Meer, Paavo Nikkola, O. Tapani Rämö, Thorvaldur Thordarson, Gudmundur H. Gudfinnsson, Maren Kahl, Eniko Bali
Publikováno v:
Jökull. 69:83-102
Our understanding of the long-term intrusive and eruptive behaviour of volcanic systems is hampered by a relatively short period of direct observation. To probe the conditions of crustal magma storage below South Iceland, we have analysed composition
Publikováno v:
Journal of Petrology. 62
Experimentally determined isobaric invariant melting phase relations from 6 to 14 GPa in the system CaO–MgO–Al2O3–SiO2 (CMAS), involving the crystalline phases forsterite + orthopyroxene + clinopyroxene + garnet and liquid, are reported. Experi
Publikováno v:
Lithos. :105486
Experimentally determined major and trace element partition coefficients between majoritic garnet, clinopyroxene, and carbon dioxide-rich liquid are reported at 10 GPa and 1800 °C in a model carbonated peridotite composition in the system CaO-MgO-Al
Autor:
Sæmundur A. Halldórsson, Enikő Bali, Gudmundur H. Gudfinnsson, Margaret E. Hartley, Sigurdur Jakobsson
Publikováno v:
Bali, E, Hartley, M E, Halldórsson, S A, Gudfinnsson, G H & Jakobsson, S 2018, ' Melt inclusion constraints on volatile systematics and degassing history of the 2014–2015 Holuhraun eruption, Iceland ', Contributions to Mineralogy and Petrology, vol. 173, no. 9 . https://doi.org/10.1007/s00410-017-1434-1
The mass of volatiles emitted during volcanic eruptions is often estimated by comparing the volatile contents of undegassed melt inclusions, trapped in crystals at an early stage of magmatic evolution, with that of the degassed matrix glass. Here we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b66f0a4844b93c1466dec6ceb9fdfc8
https://pure.manchester.ac.uk/ws/files/63968244/Bali_et_al._Volatile_systematics_paper_Holuhraun_version_before_proof_reading.pdf
https://pure.manchester.ac.uk/ws/files/63968244/Bali_et_al._Volatile_systematics_paper_Holuhraun_version_before_proof_reading.pdf
Autor:
Gro Pedersen, Sigurdur R. Gislason, Gudmundur H. Gudfinnsson, Baldur Bergsson, Ingibjörg S. Jónsdóttir, Santiago Arellano, A. Stefansson, Iwona Galeczka, Sæmundur A. Halldórsson, Sara Barsotti, Th. Högnadóttir, Alessandro Aiuppa, Enikő Bali, Nicole S. Keller, Magnús T. Gudmundsson, H. Gunnarsson, Gerdur Stefansdottir, S. Jacobsson, Th Thordasson, Árni Sigurdsson, Alexander Vladimir Conde Jacobo, Ármann Höskuldsson, B. Haddadi, Bo Galle, Th. Jóhannsson, O. Sigarsson, Elín Björk Jónasdóttir, Eydis Salome Eiriksdottir, Melissa Anne Pfeffer, Morten S. Riishuus, Tobias Dürig
Publikováno v:
Geochemical Perspectives Letters. :84-93
The effusive six months long 2014-2015 Barðarbunga eruption (31 August-27 February) was the largest in Iceland for more than 200 years, producing 1.6 ± 0.3 km3 of lava. The total SO2 emission was 11 ± 5 Mt, more than the amount emitted from Europe
Publikováno v:
Chemical Geology
Chemical Geology, Elsevier, 2017, 449, pp.99-111. ⟨10.1016/j.chemgeo.2016.11.021⟩
Chemical Geology, 2017, 449, pp.99-111. ⟨10.1016/j.chemgeo.2016.11.021⟩
Chemical Geology, Elsevier, 2017, 449, pp.99-111. ⟨10.1016/j.chemgeo.2016.11.021⟩
Chemical Geology, 2017, 449, pp.99-111. ⟨10.1016/j.chemgeo.2016.11.021⟩
Co-auteur étranger; International audience; Oceanic island basalts are thought to originate from partial melting of lithologically heterogeneous mantle. Sobolev and coworkers proposed the use of fractionation-corrected Ni concentration Ni × (FeO/Mg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f25e654f45ed9900feab21f2423038d8
https://hal.uca.fr/hal-01639562
https://hal.uca.fr/hal-01639562
Publikováno v:
American Mineralogist
American Mineralogist, Mineralogical Society of America, 2014, 99 (5-6), pp.1119-1126. ⟨10.2138/am.2014.4826⟩
American Mineralogist, Mineralogical Society of America, 2014, 99 (5-6), pp.1119-1126. ⟨10.2138/am.2014.4826⟩
International audience; Pressure-temperature divariant melting phase relations of model carbonated peridotite in the system CaO-MgO-Al2O3-SiO2-CO2 from 8 to 12 GPa are reported. From 8 to 12 GPa, melting temperatures on the studied pressure-temperatu
Publikováno v:
Journal of Geophysical Research: Solid Earth. 119:2780-2800
Melting phase relations of model carbonated peridotite in the system CaO-MgO-Al2O3-SiO2-CO2 from 2 to 3 GPa are reported. Experimentally produced melts, which are model carbonatites, with approximately 36-40 wt % CaO, 12-17 wt % MgO, 0.2-1.5 wt % Al2