Economic Geology Ph.D. and M.S. Theses


Taranovic, Valentina Ph.D. 2014, Advisor: Ed Ripley. "Petrogenesis and metallogenesis of Midcontinent Rift System - associated Tamarack Intrusive Complex and tamarack Ni-Cu-(PGE) deposit, Minnesota" Document URL


Dunlop, Matthew III M.S. 2013 Advisor: Ed Ripley. "The eagle Nickel-Copper-PGE Magmatic sulfide deposit and surrounding mafic dikes and intrusions in the baraga basin, upper michigan: Relationships, petrogenesis, and implications for magmatic sulfide exploration" Document URL


Dohoghue, Kellie A. M.S. 2012, Advisor: Ed Ripley. "Sulfur isotope and mineralogical studies of the ni-cu sulfide mineralization in the bovine igneous complex (BIC intrusion) baraga basin, Northern Michigan" Document URL


Ding, Xin Ph.D. 2010, Advisors: Ed Ripley, Chusi Li. "Mineralogic, petrological and isotopic studies of the Eagle nickel-copper sulfide deposit, Michigan" Documnt URL


Sarkar, Arindam Ph.D. 2008, Advisor: Ed Ripley. "Isotopic geochemistry of mafic intrusions and related sulfide mineralization: Uitkomst and Kabanga, Africa and the Lady of the Lake intrusion, Montana" Document URL

Thakurta, Joyashish Ph.D. 2008, Advisor: Ed Ripley. "Isotopic and mineralogical studies of sulfide mineralization and hydrothermal alteration in the Duke Island ultramafic complex, southeastern Alaska" Document URL


Mariga, Jeffery Ph.D. 2005, Advisor: Ed Ripley. "Petrogenetic evolution and oxygen isotopic studies of xenoliths from the Voisey’s Bay Intrusion, Labrador, Canada" Document URL

Walker, Rachel Ph.D. 2005. "Insights into the coking behavior of southern Indiana coals: Bulk coal properties and individual maceral chemistries." [AAT 3167284]


Johnson, Tim, Ph.D. 2001, Advisor: Colin Harvey. "Oxygen isotopic fractionation in CO2 laser microprobes: Testing the metal-oxide-metal fluoride chemical and isotopic exchange hypothesis." Document URL

Taib, Nur Iskandar, Ph.D. 2001, Advisor: Ed Ripley. "Open system magmatism and the emplacement of the Partridge River Intrusion, Duluth Complex, Minnesota." Document URL


Park, Young-Rok, Ph.D. 1998 Advisor: Ed Ripley. "Stable isotopic studies of hydrothermal systems located above and below the Duluth Complex, Midcontinent Rift System, Minnesota." Document URL


McCoy, Megan E. M.Sc. 1997. "Oxide stockpile assessment, Golden Sunlight Mine, Whitehall, Montana."


Zhou, Huitang Ph.D. 1996. "Mineralogical and industrial evaluation of a palygorskite deposit from Guan Shan, Anhui Province, P.R. China." [AAT 9716513]

Shaffer, Nelson Ross Ph.D. 1996. "Lateral variations in mineralogy and geochemistry of Pennsylvanian black shale sequences related to contemporaneous fresh water channels, southwestern Indiana." [AAT 9716497]

Dzvonik, Joseph P. M.Sc. 1996. "Alkenones as records of oceanic paleotemperatures: Studies of Eocene and Oligocene sediments from the north, south, and equatorial Atlantic."


Weng, Xijia M.Sc. 1995. "Mineralogy, morphology, geochemistry and selected physical properties of the Twiggs Clay in the Georgia Kaolin district."

Millard, Clayton L. M.Sc. 1995. "Characterization of a Posey County clay for use as a compacted clay liner."

McCuistion, Jason T. M.Sc. 1995. "The mineralogy and physical characteristics of the ball clays of Henry and Weakley counties, Tennessee."


Yuan, Jun Ph.D. 1994. "Clay mineralogy and its influence on industrial uses of some kaolin clay deposits from south China and eastern Washington-Idaho, U.S.A." [AAT 9531563]

Lee, Insung Ph.D. 1994, Advisor: Ed Ripley. "Petrologic and geochemical studies of the Spruce Road Cu-Ni deposit, Duluth Complex, Minnesota." Document URL

Johnson, Timothy M.Sc. 1994. "Oxygen isotope analysis of quartz, kaolin, smectite, and silver phosphate by CO2-laser microprobe."

Ahmad, Nadeem M.Sc. 1994. "Sedimentologic evolution and three-dimensional facies architecture of Salem Limestone from the north-eastern margin of Illinois Basin."


Wang, Yifeng Ph.D. 1993. "Genesis of repetitive and non-repetitive textures in diagenetic, weathering, and igneous processes: Feedbacks, boundary conditions, self-organization, and reaction-transport models." [AAT 9410396]

Pruett, Robert J. Ph.D. 1993. "A mineralogical and geochemical comparison between several primary and sedimentary kaolins of North America." [AAT 9323220]

Ambers, Clifford Ph.D. 1993. "The nature and origin of very well crystallized kaolinite." [AAT 9418782]


Harris, Clayton D. Ph.D. 1992. "Depositional environments of a Chesterian-age carbonate-siliciclastic couplet: Beech Creek Limestone and Big Clifty Formation, Illinois Basin." [AAT 9301446]