A subset of the 1999 interns on the steps of Pillsbury Hall.

In the summer of 1999, 13 interns spent 4-10 weeks in the Department of Geology & Geophysics. The research projects were supplemented by optional field trips to the caves of southern Minnesota, the 3.5 billion year old high-grade metamorphic rocks of the Minnesota River Valley, the Paleozoic fossils of the Twin Cities, the world's deepest glacial potholes (scoured into Proterozoic basalt), and the famous Duluth gabbro and North Shore volcanics along the scenic shore of Lake Superior (part of the Proterozoic mid-continent rift system).
 

Christina Berglund (Carleton College). Stable isotope geochemistry. Nina did field work on recent core material from west-central Montana, helped conduct a bathymetric survey of several lakes, and collected water and ostracode samples. (adviser: Ito)

Lauren Cooper (Penn. State Univ.). Metamorphic geology and tectonics. Lauren did field and laboratory work for an isotopic study to determine the age of high-grade metamorphism of the Shuswap Complex, British Columbia. (advisers: Teyssier & Whitney)

Valerie Gamble (Cornell College). Limnogeology/paleoclimatology. Valerie worked on the Mississippi Carbon project, part of a USGS-funded program to find a C reservoir for the significant CO2 that is absorbed on the Earthís surface instead of making it to the ozone layer. Research involved analysis of lake cores and water sampling from the Twin Cities area. She also worked on cores from a suspected meteorite impact site in Nebraska. (adviser: Kelts)

Elana Goer (Occidental College). Igneous petrology. Elana applied thermodynamic calculations to improve understanding of the role of amphibole in melting of hydrous peridotite in the mantle wedge beneath arc volcanoes. (adviser: Hirschmann)

Elizabeth Hausrath (Brown Univ.). Isotope geochemistry/paleoclimatology. Libby worked on a project involving climate reconstructions using the isotopic composition of cave deposits (adviser: Edwards)

Jamie Levine (Carleton College). Geophysics. Jamie used Fourier transform infrared spectroscopy to quantify water content as a function of iron content in olivine crystals heat-treated at elevated temperatures and pressures. (adviser: Kohlstedt)

Maureen Long (Rensselaer Polytechnic Inst.). Geophysics. In 1999, Maureen studied inner core anisotropy by synthesizing and controlling microstructures of Zn (analog materials of Fe in the Earth's inner core). (returning intern from summer 1998; adviser: Karato)

Eve Preus (Hampshire College). Eve spent most of the summer in the field, in the Shuswap Complex, British Columbia, working on a microstructural study of a mylonitic fault zone. (adviser: Teyssier)

Nick Schmerr (Beloit College). Isotope geochemistry. Nick worked in the radiogenic isotope lab to help set up the mass
spectrometer to measure radium isotopes in order to constrain the timing of magma genesis and transport in island arc volcanoes. His research involved determining methods for extracting and purifying 228-Ra from a Th- nitrate salt and 226-Ra from pitchblende. (advisers: Edwards & Hirschmann)

Tracy Shaffer (SUNY Binghamton). Tracy assisted in magnetic measurements on dust samples taken from various distances from Owens Lake, California, in order to determine deposition rates and transport distances. (adviser: Banerjee)

Elizabeth Starin (Brown Univ.). Geophysics. Liz  studied variable thermal conductivity in sedimentary basins. She used a FORTRAN subroutine from a mathematical library to run experiments on a nonlinear advection-diffusion equation. (adviser: Yuen)

Jessica Terrien (Augustana College). Metamorphic geology. Jessica worked on several garnet-related projects: analysis of the chemical composition of fluid inclusions in garnet and quartz veins in schists, identification and interpretation of complex garnet zoning in schists, and field work in the North Cascade mountains, Washington, along a terrane boundary (adviser: Whitney).

Andy Van Cleave (S. Florida). Experimental deformation of mantle materials. (adviser: Kohlstedt)