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dc.contributor.authorSantos, Alison R.
dc.date.accessioned2012-08-27T21:45:19Z
dc.date.available2012-08-27T21:45:19Z
dc.date.issued2012-08-27
dc.date.submittedJuly 2012
dc.identifier.urihttp://hdl.handle.net/1928/21002
dc.description.abstractConstraints were placed on the density of kimberlitic melts containing varying amounts of CO2 using high pressure sink/float experiments. The melt composition used was carefully selected and was prepared free of H2O and minor elements in order to focus on the effect of CO2. Experiments were run in graphite capsules over a pressure range of 4-10 GPa in a multi-anvil apparatus using Fo100 and Fo90 spheres as density markers. The compositions used contained 0, 3, 6, and 12 wt% CO2 and were derived from mixing the 0 and 12 wt% CO2 compositions together. Run products were analyzed with FTIR to confirm the presence of carbonate and lack of water and with EPMA to verify the composition. Carbon was quantified using the by difference method, but plans are in place to develop a method to quantify this element by EPMA. The density data places constraints on the location of the melt compression curves, and shows the melts to be eruptible from pressures below 9 GPa (10 GPa for the 6 wt% CO2 composition) on Earth. This data is also applicable to Venus, and all compositions are eruptible from up to 9 GPa according to current Venus mantle density models.en_US
dc.language.isoen_USen_US
dc.subjectCO2en_US
dc.subjectmelt densityen_US
dc.subjectkimberliteen_US
dc.subjectexperimental petrologyen_US
dc.subject.lcshKimberlite.
dc.subject.lcshCarbon dioxide.
dc.titleThe effect of carbon dioxide on the density and compressibility of kimberlitic magmaen_US
dc.typeThesisen_US
dc.description.degreeEarth and Planetary Sciencesen_US
dc.description.levelMastersen_US
dc.description.departmentUniversity of New Mexico. Dept. of Earth and Planetary Sciencesen_US
dc.description.advisorAgee, Carl B.
dc.description.committee-memberMcCubbin, Francis M.
dc.description.committee-memberFischer, Tobias P.


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