Duncan Keller
Mailing address: PO Box 208109, New Haven CT 06520-8109
Street address: 210 Whitney Ave., New Haven CT 06511
I study metamorphic rocks and minerals, particularly petrological systems as they apply to larger tectonic contexts such as mountain-building. My current work is on ultrahigh-pressure, (UHP) ultrahigh-temperature (UHT) and high-pressure (HPG) granulites from Connecticut. I focus particularly the information preserved in exsolution assemblages, especially in garnet. I am also interested in mineral specimens, collection management, and museum displays and education.
I was a finalist in Yale’s 2020 ‘3 Minute Thesis’ competition, where PhD students present their research in 3 minutes or less to a general audience. Watch the video here: https://www.youtube.com/watch?v=VtUN2fpJkEQ
Links to publications:
Quartz, mica, and amphibole exsolution from majoritic garnet reveals ultra-deep sediment subduction, Appalachian Orogen: [https://advances.sciencemag.org/content/6/11/eaay5178] (Science Advances 2020)
Crystallographic and textural evidence for precipitation of rutile, ilmenite, corundum, and
apatite lamellae from garnet: [https://doi.org/10.2138/am-2019-6849] (American Mineralogist 2019)
High-pressure granulite facies metamorphism (~1.8 GPa) revealed in silica-undersaturated garnet-spinel-corundum gneiss, Central Maine Terrane, Connecticut, U.S.A.: [https://doi.org/10.2138/am-2018-6543] (American Mineralogist 2018)
