Published June 2011
| Published
Journal Article
Open
Silica coatings on young Hawaiian basalts: Constraints on formation mechanism from silicon isotopes
Abstract
Young basalts from Kilauea, on the big island of Hawai'i, frequently feature visually striking, white, orange and blue coatings, consisting of a 10-50 μm layer of amorphous silica, capped, in some cases, by a ~1 μm layer of Fe-Ti oxide [1]. The coatings provide an opportunity to study the early onset of acid-sulfate weathering, a process common to many volcanic environments. Silicon isotopes fractionate with the precipitation of clays and opaline silica, and have been demonstrated to be an indicator of weathering intensity [2,3]. Here we report in situ measurements of δ^(30)_Si of the silica coatings and their implications for coating formation.
Additional Information
© 2011 by the Mineralogical Society of Great Britain and Ireland. Open Access Article. Published online 1 August 2011.Attached Files
Published - Eiler_2011p649.pdf
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- Eprint ID
- 39789
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- CaltechAUTHORS:20130806-135600586
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2013-08-09Created from EPrint's datestamp field
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2020-03-09Created from EPrint's last_modified field
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- Division of Geological and Planetary Sciences (GPS)