| In the Laboratory for Environmental and Sedimentary Geochemistry, we are documenting past changes in environmental and climatic conditions, including changes in salinity, streamflow, temperature, ocean circulation, and coastal upwelling at various locations, using environmentally sensitive isotopes (oxygen, hydrogen, carbon, strontium, and sulfur) and elements (such as Sr/Ca and Mg/Ca), contained in fossils, sediments, and other natural climate archives. We apply similar methods to studying modern environments, using Sr and light stable isotopes (O, C, N, H and S) as tracers. These analyses are made with our new GV Isoprime gas source mass spectrometer, multiprep, and elemental analyzer, housed in McCone 155. The laboratory also houses a computer-controlled micromill for very high-resolution sampling across incrementally banded or deposits growth layers (such as coral, mollusks, fish otolith growth bands, or growth bands in speleothem deposits), as well as sediment sampling and sample preparation laboratories, and a cold room, petrographic and binocular microscopes, and a computer lab. The laboratories are located on the first floor of McCone Hall (rooms 115, 119, and 155). The Laboratory for Environmental and Sedimentary Geochemistry (LESG) home page |
