dc.contributor.advisor | Timothy Grove. | en_US |
dc.contributor.author | Fuentes, Jocelyn J | en_US |
dc.contributor.other | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences. | en_US |
dc.coverage.spatial | n-us-ca | en_US |
dc.date.accessioned | 2018-03-27T14:18:51Z | |
dc.date.available | 2018-03-27T14:18:51Z | |
dc.date.copyright | 2012 | en_US |
dc.date.issued | 2012 | en_US |
dc.identifier.uri | http://hdl.handle.net/1721.1/114354 | |
dc.description | Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2012. | en_US |
dc.description | Cataloged from PDF version of thesis. | en_US |
dc.description | Includes bibliographical references (pages [32]-[34]). | en_US |
dc.description.abstract | This paper characterizes the compositionally distinctive high-Na andesite lavas at Medicine Lake Volcano that erupted at ~100 ka and that built most of Medicine Lake's caldera. These high-Na lavas define a compositional trend that formed by fractional crystallization in a shallow magma chamber (~ 4 to 8 km). Petrologic evidence indicates pre-eruptive H20 contents of 2 to 4 wt.% H20 over a temperature range of 1070 to 900 C. Oxygen fugacity recorded in coexisting spinel and rhombohedral oxides varies from NNO (Nickel - Nickel Oxide) to NNO 0.7 log units. Experiments performed at 1 kbar - H20 saturated conditions at the NNO buffer on a primitive andesite reproduce most of the major element compositional variability exhibited in the high-Na lavas. | en_US |
dc.description.statementofresponsibility | by Jocelyn J. Fuentes. | en_US |
dc.format.extent | 34 unnumbered pages | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Massachusetts Institute of Technology | en_US |
dc.rights | MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. | en_US |
dc.rights.uri | http://dspace.mit.edu/handle/1721.1/7582 | en_US |
dc.subject | Earth, Atmospheric, and Planetary Sciences. | en_US |
dc.title | Magmatic processes that generated the rim andesites of Medicine Lake Volcano, N. California | en_US |
dc.type | Thesis | en_US |
dc.description.degree | S.B. | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences | |
dc.identifier.oclc | 1028979739 | en_US |