Quantitative Models of Fluid Flow, Chemical Reaction, and Stable Isotopic Fractionation and Their Application to Sediment Diagenesis and Hydrothermal Alteration

In this study, I develop a numerical model to predict dissolution and precipitation reactions by groundwater flow through temperature and pressure gradients in sedimentary basins. I incorporate chemical reaction into a transient model of groundwater flow equations that describes heat transfer and solute transfer. The model is formulated and solved in geologic-time and basin distance scales, and can be therefore applied to study basin-wide diagenesis related to long-distance fluid migration. The model integrates predicted groundwater flow patterns with the reaction path modeling; this approach allows us to predict the rate at which minerals dissolve and precipitate in flow systems of specific interest. Sample calculations of precipitation and dissolution reactions within several flow systems shed light on the rates and patterns of chemical diagenesis that likely accompany fluid migration in sedimentary basins.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Geology

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Lee, Ming-Kuo

Contributors dc:contributor

• Bethke, Craig M.

• Geochemistry
• Geology
• Hydrology

Identifier

(UMI)AAI9314900

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/72512