Boron concentrations of volcanic fields in different geotectonic settings |
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| Institution: | 1. ARC Centre of Excellence for Core to Crust Fluid Systems/GEMOC, Department of Earth and Planetary Sciences, Macquarie University, Sydney NSW 2109, Australia;2. GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schlossgarten 5, 91054 Erlangen, Germany;3. Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan;4. Istituto di Geoscienze e Georisorse-CNR, Via Moruzzi 1, Pisa, Italy;1. Institut für Geowissenschaften, Universität Heidelberg, Im Neuenheimer Feld 234-236, Germany;2. Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Ensenada, BC, Mexico;3. GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany;4. Instituto Nacional de Sismología, Vulcanología, Meteorología, e hidrología (INSIVUMEH), 7a Avenue 14-57, Zone 13, Guatemala City, Guatemala;1. Center for Integrated Research and Education of Natural Hazards, Shizuoka University, Shizuoka 422-8529, Japan;2. Institute of Geosciences, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan;3. Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan;4. Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan;5. Environmental Research Division, Instituto Tecnológico y de Energías Renovables (ITER), 38611 Granadilla de Abona, Tenerife, Spain;6. Instituto Volcanológico de Canarias (INVOLCAN), Antiguo Hotel Taoro, Parque Taoro, 22, 38400 Puerto de La Cruz, Tenerife, Spain;7. Izu Peninsula Geopark Promotion Council, Ito, Shizuoka 414-8555, Japan;8. Faculty of Education, Shizuoka University, Shizuoka 422-8529, Japan |
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| Abstract: | Whole rock boron and other mobile and immobile element concentrations are reported for the alkaline maar volcanic rocks from the Bakony–Balaton Highland Volcanic Field (BBHVF/Hungary) and for three other geographically distinct maar volcanic fields from diverse tectonic settings (Spain/Canary Islands, Tenerife; New Zealand/Waipiata, Otago; and Mexico/Pinacate, Sonora and Ceboruco Cone Field). Boron concentrations, along with other fluid immobile and incompatible element concentrations are used to study the fluid enrichment of the above mentioned intraplate volcanic materials. The fluid addition was the highest in the Trans Mexican Volcanic Belt (Ceboruco Cone Field), which is associated with recent subduction. The BBHVF also shows high fluid enrichment. The average B content of the Tenerife (Canary Islands) samples (6.4 μg/g) is similar to that of the BBHVF (6.9 μg/g). The fluid enrichment is higher in the BBHVF than in the Waipiata Volcanic Field (WVF). The magmatic source regions for all the investigated volcanic rocks were affected by fluid components to different degrees, and, despite the distant relationship to subduction zones, all show evidence of a subduction-derived fluid component. |
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