Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Sæmundur A. Halldórsson"'
Linking deeply-sourced volatile emissions to plateau growth dynamics in southeastern Tibetan Plateau
Autor:
Maoliang Zhang, Zhengfu Guo, Sheng Xu, Peter H. Barry, Yuji Sano, Lihong Zhang, Sæmundur A. Halldórsson, Ai-Ti Chen, Zhihui Cheng, Cong-Qiang Liu, Si-Liang Li, Yun-Chao Lang, Guodong Zheng, Zhongping Li, Liwu Li, Ying Li
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Deeply-sourced volatiles are releasing from orogenic plateau regions, providing windows to plateau growth dynamics occurring at variable depths. Here the authors show that mantle-derived volatiles reveal the involvement of mantle dynamics in southeas
Externí odkaz:
https://doaj.org/article/d6671ec3e8f74db4afbae7e555466293
Autor:
Anett Blischke, Bryndís Brandsdóttir, Martyn S. Stoker, Carmen Gaina, Ögmundur Erlendsson, Christian Tegner, Sæmundur A. Halldórsson, Helga M. Helgadóttir, Bjarni Gautason, Sverre Planke, Anthony A. P. Koppers, John R. Hopper
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 23, Iss 4, Pp n/a-n/a (2022)
Abstract Volcanostratigraphic and igneous province mapping of the Jan Mayen microcontinent (JMMC) and Iceland Plateau Rift (IPR) region have provided new insight into the development of rift systems during breakup processes. The microcontinent's form
Externí odkaz:
https://doaj.org/article/048f90db7135490894ce9d4881a6f343
Autor:
Freysteinn Sigmundsson, Virginie Pinel, Ronni Grapenthin, Andrew Hooper, Sæmundur A. Halldórsson, Páll Einarsson, Benedikt G. Ófeigsson, Elías R. Heimisson, Kristín Jónsdóttir, Magnús T. Gudmundsson, Kristín Vogfjörd, Michelle Parks, Siqi Li, Vincent Drouin, Halldór Geirsson, Stéphanie Dumont, Hildur M. Fridriksdottir, Gunnar B. Gudmundsson, Tim J. Wright, Tadashi Yamasaki
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)
Large-volume volcanic eruptions can occur despite only limited precursory activity. Here the authors show that modelling the combined effects of buoyant magma, viscoelastic earth behaviour, and sustained magma channels can explain such behaviour of v
Externí odkaz:
https://doaj.org/article/0c024d3baeee4898b806085012a75a92
Autor:
Matthew P. Nikitczuk, Gray E. Bebout, Charles A. Geiger, Tsutomu Ota, Takuya Kunihiro, John F. Mustard, Sæmundur A. Halldórsson, Eizo Nakamura
Publikováno v:
Astrobiology. 22:1293-1309
We measured the N concentrations and isotopic compositions of 44 samples of terrestrial potassic and micro- and meso-porous minerals and a small number of whole-rocks to determine the extent to which N is incorporated and stored during weathering and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4de135a4a806261b07509fc94180276c
https://doi.org/10.1089/ast.2021.0158
https://doi.org/10.1089/ast.2021.0158
Autor:
Deze Liu, Frederic Moynier, Paolo A. Sossi, Raphael Pik, Sæmundur Ari Halldórsson, Edward Inglis, James M.D. Day, Julien Siebert
Publikováno v:
Geochimica et Cosmochimica Acta, 352
Indium (In) behaves as a moderately volatile metal during nebular and planetary processes, and its volatility depends strongly on oxygen fugacity. The In isotopic composition of the bulk silicate Earth (BSE) could provide a critical constraint on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5356e05636e7155506037af3bd665e2a
https://hdl.handle.net/20.500.11850/614035
https://hdl.handle.net/20.500.11850/614035
Autor:
David V. Bekaert, Peter H. Barry, Michael W. Broadley, David J. Byrne, Bernard Marty, Carlos J. Ramírez, J. Maarten de Moor, Alejandro Rodriguez, Michael R. Hudak, Adam V. Subhas, Saemundur A. Halldórsson, Andri Stefánsson, Antonio Caracausi, Karen G. Lloyd, Donato Giovannelli, Alan M. Seltzer
Publikováno v:
Science Advances. 9
Mantle-derived noble gases in volcanic gases are powerful tracers of terrestrial volatile evolution, as they contain mixtures of both primordial (from Earth’s accretion) and secondary (e.g., radiogenic) isotope signals that characterize the composi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c62fec06c1d085c63730faf0b98b45
https://doi.org/10.1126/sciadv.adg2566
https://doi.org/10.1126/sciadv.adg2566
Autor:
Raegan Paul, Timothy J. Rogers, Kate M. Fullerton, Matteo Selci, Martina Cascone, Murray H. Stokes, Andrew D. Steen, J. Maarten de Moor, Agostina Chiodi, Andri Stefánsson, Sæmundur A. Halldórsson, Carlos J. Ramirez, Gerdhard L. Jessen, Peter H. Barry, Angelina Cordone, Donato Giovannelli, Karen G. Lloyd
Microbial communities in terrestrial geothermal systems often contain chemolithoautotrophs with well-characterized distributions and metabolic capabilities. However, the extent to which organic matter produced by these chemolithoautotrophs supports h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e373d101109fed7a3d9ea7a932fc99d
https://doi.org/10.1101/2023.01.20.524876
https://doi.org/10.1101/2023.01.20.524876
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
Linking deeply-sourced volatile emissions to plateau growth dynamics in southeastern Tibetan Plateau
Autor:
Cong-Qiang Liu, Zhihui Cheng, Zhengfu Guo, Lihong Zhang, Ai-Ti Chen, Yunchao Lang, Si-Liang Li, Zhongping Li, Guodong Zheng, Yuji Sano, Ying Li, Maoliang Zhang, Peter H. Barry, Sæmundur A. Halldórsson, Sheng Xu, Liwu Li
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Nature Communications
Nature Communications
The episodic growth of high-elevation orogenic plateaux is controlled by a series of geodynamic processes. However, determining the underlying mechanisms that drive plateau growth dynamics over geological history and constraining the depths at which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac06a377ba5348faf57ff3dd52bf0128
https://doaj.org/article/d6671ec3e8f74db4afbae7e555466293
https://doaj.org/article/d6671ec3e8f74db4afbae7e555466293
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