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Gas and Dust Measurements for Taylor Glacier and Taylor Dome Ice Cores Data DOI: https://doi.org/10.15784/601198 Cite as Menking, J., Baggenstos, D., Barker, S., Bauska, T., Brook, E. J., Dyonisius, M., et al. (2019) "Gas and Dust Measurements for Taylor Glacier and Taylor Dome Ice Cores" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601198. AMD - DIF Record(s) USAP-1245659_1 NSF-ANT12-45821_1 Abstract New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5-4 transition, a period of global cooling and ice sheet expansion. We determine chronologies for the ice and air bubbles in the new ice cores by visually matching variations in gas- and ice- phase tracers to preexisting ice core records. The chronologies reveal an ice age-gas age difference (Δage) approaching 10 ka during MIS 4, implying very low snow accumulation in the Taylor Glacier accumulation zone. A revised chronology for the analagous section of the Taylor Dome ice core (84 to 55 ka), located to the south of the Taylor Glacier accumulation zone, shows that Δage did not exceed 3 ka. The difference in Δage between the two records during MIS 4 is similar in magnitude but opposite in direction to what is observed at the Last Glacial Maximum. This relationship implies that a spatial gradient in snow accumulation existed across the Taylor Dome region during MIS 4 that was oriented in the opposite direction of the accumulation gradient during the Last Glacial Maximum. Creator(s): Menking, James; Brook, Edward J.; Marcott, Shaun; Barker, Stephen; Shackleton, Sarah; Severinghaus, Jeffrey; Dyonisius, Michael; Petrenko, Vasilii; McConnell, Joseph; Rhodes, Rachel; Bauska, Thomas; Baggenstos, Daniel Date Created: 2019-08-12 Repository: USAP-DC (current) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: 162.167, East: 162.167, South: -77.733, North: -77.733 Award(s) NSF 1245659 NSF 1245821 NSF 1246148 Version: 1 Related Project(s) Collaborative Research: The Taylor Glacier, Antarctica, Horizontal Ice Core: Exploring changes in the Natural Methane Budget in a Warming World and Expanding the Paleo-archive References Menking, J. A., Brook, E. J., Shackleton, S. A., Severinghaus, J. P., Dyonisius, M. N., Petrenko, V., McConnell, J. R., Rhodes, R. H., Bauska, T. K., Baggenstos, D., Marcott, S., and Barker, S.: Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier, Clim. Past, 15, 1537–1556, 10.5194/cp-15-1537-2019, 2019. (doi:10.5194/cp-15-1537-2019) Keywords Antarctica Blue Ice Chemistry:ice CO2 Dust Gas Geochemistry Glaciers/ice Sheet Glaciology Ice Core Ice Core Records Mass Spectrometer Methane Methane Nitrogen Isotopes Oxygen Isotope Paleoclimate Snow/ice Taylor Dome Taylor Dome Ice Core