Sarah Carmichael Department of Geology
ASU Box 32067
572 Rivers Street
Boone, NC 28608
Phone: 828-262-8471

Fluid-Rock Geochemistry and Biomineralogy

My interests involve reactive fluid flow and mineralization in sedimentary and volcanic systems in both ancient and modern environments, as well as microbially mediated reactions at the earth's surface.

My research involves a variety of techniques such as CL (cathodoluminescence), scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction, Fourier Transform Infrared Spectroscopy (FT-IR), LA-ICPMS and LA-ICP-OES (laser ablation inductively coupled plasma mass spectrometry or optical emission spectroscopy) and stable isotope analysis (particularly carbon and oxygen). My current field areas include Tanzania, western China, western Mongolia, east Tennessee (USA), and caves in the southern Appalachians.

Some of my students also work with Dr. Suzanna Bräuer's research group in the Department of Biology to culture biomineralizing bacteria and fungi. We do extensive fieldwork in southern Appalachian caves as well as on a variety of regional rocks at the surface that have experienced reactive fluid flow and/or biomineralization. For more information about our geomicrobiology research group, visit

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