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Osmium isotopes in the aerosols of the mantle volcano Mauna Loa |
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| Authors: | Urs Kr henbü hl Markus Geissbü hler Fritz Bü hler Peter Eberhardt David L. Finnegan |
| Affiliation: | aLaboratorium für Radiochemie, University of Bern, Freiestrasse 3, CH-3000 Bern 9,Switzerland bPhysikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern ,Switzerland cLos Alamos National Laboratory, MS J514, Los Alamos, NM 87545,USA |
| Abstract: | Aerosols and reactive gases from the spring 1984 eruption of Mauna Loa Volcano on Hawaii were collected and analyzed for osmium and its isotopic composition. The measured187Os/186Os ratio of1.14 ± 0.03 is close to the ratio in matter with solar systemRe/Os abundance. This result shows that the aerosols from Mauna Loa originated in the mantle and that their composition was not or only slightly influenced by their contact with the crust. |
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