Dr. Piccione received his PhD from the Department of Earth and Planetary Sciences at the University of California, Santa Cruz in 2023. He was a Postdoctoral Research Associate Earth, Environmental, & Planetary Sciences at Brown University from 2023 - 2026 before joining the Department in 2026.
- Postdoctoral Research Associate, 2023, Earth, Environmental, & Planetary Sciences, Brown University
- PhD, 2023, Earth and Planetary Sciences, University of California, Santa Cruz
- BS, 2016, Geoosciences, Stony Brook University
- 2015, Indiana University Geologic Field School
Education & Training
G. Piccione, T. Blackburn, P. Northrup, S. Tulaczyk, E.T. Rasbury. (2025). Antarctic Subglacial Trace Metal Mobility Linked to Climate Change Across Termination III. In press at The Cryosphere. doi: https://doi.org/10.5194/egusphere-2024-1359.
J. Gagliardi, T. Blackburn, G. Piccione, S. Tulaczyk, B. Keller. (2025). Subglacial precipitates record Antarctic ice sheet response to Southern Ocean warming. In press at Geophysical Research Letters. doi: 10.22541/au.172167823.35415567/v1.
C. Gagnon, Riley Havel, Jiquan Chen, G. Piccione, D. Ibarra. (2025). Determination of KGa-1b and SHCa-1 Δ′17O and δ18O via Laser Fluorination of Lithium Fluoride Clay Pellets. Rapid Communications in Mass Spectrometry. doi: https://doi.org/10.1002/rcm.10021.
G. Edwards, G. Piccione, T. Blackburn, S. Tulaczyk. (2025). Uranium series isotopes as tracers of physical and chemical weathering in glacial sediments from Taylor Valley, Antarctica. Chemical Geology. doi: https://doi.org/10.1016/j.chemgeo.2024.122463.
T. Blackburn, S. Kodama, G. Piccione. (2024). Eccentricity Paces Late Pleistocene Glaciations. Geophysical Research Letters, (51), doi: https://doi.org/10.1029/2024GL108751.
P. Northrup, R. Tappero, T. Glotch, G. Flynn, M. Yesiltas, Y. Kebukawa , L. Flores, M. Gemma, G.Piccione. (2024). Chemistry in Retrieved Ryugu Asteroid Samples Revealed by Non-Invasive X-ray Microanalyses: Pink-Beam Fluorescence CT and Tender-Energy Absorption Spectroscopy. Geosciences, 14(4), 111: doi: https://doi.org/10.3390/geosciences14040111
E.T. Rasbury, G. Piccione, W. Holt, W.B. Ward. (2023). Potential for constraining sequence stratigraphy with U-Pb dating of carbonates. Earth-Science Reviews (243), 104495, doi: https://doi.org/10.1016/j.earscirev.2023.104495.
G.H. Edwards, T. Blackburn, G. Piccione, S. Tulaczyk, G.H. Miller, C. Vera-Sikes. (2022). Terrestrial evidence for ocean forcing of Heinrich events. Science Advances (8), eabp9329, doi: https://www.science.org/doi/epdf/10.1126/sciadv.abp9329.
G. Piccione, T. Blackburn, S. Tulaczyk, T. Rasbury, M. Hain, D. Ibarra, K. Methner, *C. Tinglof, B. Cheney, P. Northrup, K.Licht. (2022). Subglacial precipitates record Antarctic ice sheet response to late Pleistocene millennial climate cycles. Nature Communications 13, 5428. https://doi.org/10.1038/s41467-022-33009-1.
T. Blackburn, G.H. Edwards, S. Tulaczyk, M. Scudder, G. Piccione, B. Hallet, J.C. Zachos, B. Cheney, N. McLean, J.T. Babbe. (2020). Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial. Nature (583), 554–559. doi: https://doi.org/10.1038/s41586-020-2484-5.
G. Piccione, E.T. Rasbury, B.A. Elliot, J.R. Kyle, S.J. Jaret, A.S. Acerbo, A. Lanzirotti, P. Northrup, K. Wooton, R.R., Parrish. (2019). Vein fluorite U-Pb dating demonstrates post– 6.2 Ma rare earth element mobilization associated with Rio Grande rifting. Geosphere; 15 (6),1958–1972,doi: https://doi.org/10.1130/GES02139.1
I am a paleoclimatologist and geochemist who uses the rock record to study Earth’s surface environments. I primarily investigate how polar environments and ice sheets have responded to past climate fluctuations, and how these changes influence global carbon and water cycles. I also have broad interests in hydroclimate, environmental geochemistry, and critical mineral formation. I actively pursue research on climate science and terrestrial geochemistry using laboratory methods such as stable isotope and elemental analyses, U-series and UPb geochronology, and x-ray spectroscopy.