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Present-day volcanism on Venus as evidenced from weathering rates of olivine

Show simple item record Filiberto, Justin Trang, David Treiman, Allan H. Gilmore, Martha S.
dc.coverage.spatial Venus (Planet) 2020-02-11T15:56:54Z 2020-02-11T15:56:54Z 2020-01-03
dc.identifier.citation Filiberto, Justin, David Trang, Allan H. Treiman, and Martha S. Gilmore. 2020. "Present-day volcanism on Venus as evidenced from weathering rates of olivine". Science Advances. 6 (1): eaax7445. en
dc.identifier.other DOI: 10.1126/sciadv.aax7445
dc.description.abstract At least some of Venus' lava flows are thought to be <2.5 million years old based on visible to near-infrared (VNIR) emissivity measured by the Venus Express spacecraft. However, the exact ages of these flows are poorly con-strained because the rate at which olivine alters at Venus surface conditions, and how that alteration affects VNIR spectra, remains unknown. We obtained VNIR reflectance spectra of natural olivine that was altered and oxidized in the laboratory. We show that olivine becomes coated, within days, with alteration products, primarily hematite (Fe2O3). With increasing alteration, the VNIR 1000-nm absorption, characteristic of olivine, also weakens within days. Our results indicate that lava flows lacking VNIR features due to hematite are no more than several years old. Therefore, Venus is volcanically active now en
dc.description.statementofresponsibility Justin Filiberto, David Trang, Allan H. Treiman and Martha S. Gilmore
dc.format.extent 5 pages
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Association for the Advancement of Science en
dc.relation.ispartofseries LPI contribution ; no. 2219
dc.subject Venus (Planet)--Volcanism en
dc.subject Olivine en
dc.subject Weathering en
dc.subject.lcc QB621
dc.title Present-day volcanism on Venus as evidenced from weathering rates of olivine en
dc.type Article en
dc.rights.license © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC)

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