groundwatergeochemistryand+ the+seasonaleffect+of ...sainieid/geochem/talks/romano... ·...
TRANSCRIPT
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Groundwater Geochemistry and the Seasonal Effect of Deposition in Hardpans in Allandale, Australia
Lisa Romano Geochemistry 428
NDSU Fall 2014
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* Introduction * Background Information * Original Study * Seasonal differences * Results * Future Possibilities * References * Questions
Outline
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Background
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* Water table risen up to 30 meters * Allandale 600 mm
rain/year * Other 420-‐289 mm * Fargo – 540 mm
Silcrete
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Background
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Background
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Original Study
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April Results
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* Future studies * pH values * Same water composition
Would seasonal variations affect the system?
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Output S1
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Output D1
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Output D3
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Output S5
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Output D5
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* Silica SIs remained about the same * Seasonal deposition of Fe minerals in some sites
Results
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* Groundwater composition * Mastery of PHREEQC * Temperature
Errors
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Sources
Lee, S. Y. and Gilkes, R.J. (2005), Groundwater geochemistry and composition of hardpans in the southwestern Australian regolith. Geoderma, 126, 59-‐84.
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Questions?