Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Matthew G Jackson"'
Autor:
Gregory J. Archer, Gerrit Budde, Emily A. Worsham, Andreas Stracke, Matthew G. Jackson, Thorsten Kleine
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 2, Pp n/a-n/a (2023)
Abstract Ocean island basalts (OIB) show variable 182W deficits that have been attributed to either early differentiation of the mantle or core‐mantle interaction. However, 182W variations may also reflect nucleosynthetic isotope heterogeneity inhe
Externí odkaz:
https://doaj.org/article/8078c631c7a545e099b9f7434a75d3b8
Autor:
Santiago Herrera, William W. Chadwick, Matthew G. Jackson, Jasper Konter, Luke McCartin, Nicole Pittoors, Emily Bushta, Susan G. Merle
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
Volcanic eruptions provide rare opportunities to witness the biological recolonization of areas covered by new lava flows by effectively resetting the ecological succession clock to zero. The role of submarine volcanic eruptions as disturbance events
Externí odkaz:
https://doaj.org/article/85505dc1e8ed4d66a1faa40c4a1d8cbb
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 23, Iss 12, Pp n/a-n/a (2022)
Abstract The formerly continuous Vitiaz Arc broke into its Vanuatu and Fijian portions during a reversal of subduction polarity in the Miocene. Basaltic volcanism in Fiji that accompanied the breakup ranged from shoshonitic to low‐K and boninitic w
Externí odkaz:
https://doaj.org/article/e80206e64bbc4a2abe2155a5d2c15d24
Autor:
Jenna V. Adams, Matthew G. Jackson, Frank J. Spera, Allison A. Price, Benjamin L. Byerly, Gareth Seward, John M. Cottle
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Subduction of oceanic crust and sediments contributes to heterogeneities in the mantle, which are sampled by mantle plumes. Here, the authors find that extreme isotopic heterogeneity in Samoan clinopyroxenes can help constrain the composition of mant
Externí odkaz:
https://doaj.org/article/b83952a560d24665907e081856ff1c30
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 6, Pp n/a-n/a (2021)
Abstract Basalts from the Samoan volcanoes sample contributions from all of the classical mantle endmembers, including extreme EM II and high 3He/4He components, as well as dilute contributions from the HIMU, EM I, and DM components. Here, we present
Externí odkaz:
https://doaj.org/article/ce4c0e3814124d01a8bdb144aeab114c
Autor:
Kevin Konrad, Anthony A. P. Koppers, Bernhard Steinberger, Valerie A. Finlayson, Jasper G. Konter, Matthew G. Jackson
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)
Using mantle plumes to reconstruct past plate motion is complicated, because plumes may not be fixed. Here, the authors demonstrate using 40Ar/39Ar ages that the Rurutu plume is relatively stable compared to the rapidly moving Hawaiian plume, yet it
Externí odkaz:
https://doaj.org/article/5781dcefa7c64d3bb444dc83864c8f0e
Autor:
Bernhard Steinberger, K. Konrad, Anthony A. P. Koppers, Matthew G. Jackson, R. Dietmar Müller, Thorsten W. Becker, Joanne M. Whittaker, Barbara Romanowicz
Publikováno v:
Nature Reviews Earth & Environment
The existence of mantle plumes was first proposed in the 1970s to explain intra-plate, hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical images and discrepancies in interpretations of geochemical and geochro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02c4e9200d9852e06cfda68b86a50043
https://doi.org/10.1038/s43017-021-00168-6
https://doi.org/10.1038/s43017-021-00168-6
Autor:
Matthew G. Jackson, Caroline Soderman, Marc-Alban Millet, Simon Matthews, Oliver Nebel, Munir Humayun, Helen M. Williams, Elisabeth Widom, Simon Turner, Oliver Shorttle, Saskia Ruttor, Christoph Beier
Publikováno v:
Geochimica et Cosmochimica Acta. 292:309-332
Lithological heterogeneity is a widely accepted feature of the Earth's mantle, with recycled crustal material accounting for a significant part of heterogeneity in ocean island basalt (OIB) geochemistry. Fe isotopes have been used to link geochemical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f50281f45f16e81f0008eae5b7ee5dad
https://doi.org/10.1016/j.gca.2020.09.033
https://doi.org/10.1016/j.gca.2020.09.033
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
Publikováno v:
Science (New York, N.Y.). 375(6576)
Volcanic hotspots are thought to be fed by hot, active upwellings from the deep mantle, with excess temperatures (Tex) ~100° to 300°C higher than those of mid-ocean ridges. However, Tex estimates are limited in geographical coverage and often incon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::891d5c5b0783fbe88abb1cacbeccf136
https://pubmed.ncbi.nlm.nih.gov/34990241
https://pubmed.ncbi.nlm.nih.gov/34990241