12391f51-a3a7-4976-942d-47194a747b20 urn:uuid Antarctica New Zealand adminteam@antarcticanz.govt.nz 2024-07-16T05:38:09.297Z 2024-03-19T01:49:46 ISO 19115-1 2018 https://doi.org/10.1594/PANGAEA.946801 Glycerol dialkyl glycerol tetraether (GDGT) abundances, age-depth tie points and biostratigraphic age events for McMurdo erratics, CIROS-1, CRP-2/2A, DSDP 270, DSDP 274, ANDRILL 2A, ANDRILL 1B 2022-08-02T00:00:00 2022-08-02T00:00:00 https://doi.org/10.1594/PANGAEA.946801 This data publication contains biostratigraphic age events for the CIROS-1 drill core, updated age ranges for a suite of samples from the McMurdo erratics sample collection, age-depth tie points for CIROS-1, CRP-2/2A, DSDP 270, DSDP 274, ANDRILL 2A and ANDRILL 1B, and glycerol dialkyl glycerol tetraethers (GDGTs) abundances and indices for samples from the McMurdo erratics, CIROS-1, CRP-2/2A, DSDP 270, DSDP 274, ANDRILL 2A, and ANDRILL 1B. All sample sites are in the Ross Sea region of Antarctica. The McMurdo erratics are glacial erratics collected in the McMurdo Sound region between 1991 and 1996 (Harwood and Levy, 2000). The CIROS-1 drill core was collected from McMurdo sound in 1986 with samples spanning the upper Eocene to lower Miocene. CRP-2/2A drill core was collected in 1999 from offshore Victoria Land with samples for this study from the upper Oligocene-lower Miocene. DSDP Site 270 was recovered from the Eastern Basin of the central Ross Sea in 1973, with samples spanning the upper Oligocene-lower Miocene. DSDP Site 274 was drilled on the lower continental rise in the northwestern Ross Sea in 1973, and samples for this study have been taken from the middle Miocene sections of the drill core. The ANDRILL-2A core was recovered in 2007 from Southern McMurdo Sound, samples span the lower Miocene to middle Miocene and data was originally published in Levy et al. (2016). The ANDRILL-IB core was drilled from the McMurdo Ice Shelf in 2006, samples are compiled from the Plio-Pleistocene section of the core and were originally published in McKay et al. (2012). Biostratigraphic age events are described for CIROS-1, expanding on and updating previously published age models and biostratigraphic ranges. Ages are also revised for the McMurdo erratics by updating the ages of the biostratigraphic markers described by (Harwood and Levy (2000) to more recently published age ranges. Age models for the sample sites are developed using published age datums and the Bayesian age-depth modelling functionality in the R package Bchron (Haslett and Parnell, 2008) to ensure a consistent approach for assigning ages to core depths between datums. GDGT abundances and indices for Ross Sea sites are presented to reconstruct ocean temperatures over the Cenozoic era. Detailed methodology for the processing and analysis of samples for GDGTs is described in the methods section of supplement paper. Further details are provided at: Duncan, B., McKay, R., Levy, R. et al. Climatic and tectonic drivers of late Oligocene Antarctic ice volume. Nat. Geosci. 15, 819–825 (2022). https://doi.org/10.1038/s41561-022-01025-x GET DATA: https://doi.org/10.1594/PANGAEA.946801 Duncan, Bella. bella.duncan@vuw.ac.nz ORCid McKay, Robert M. robert.mckay@vuw.ac.nz ORCid Levy, Richard H. r.levy@gns.cri.nz ORCid Naish, Timothy R. timothy.naish@vuw.ac.nz ORCid Prebble, Joseph G. j.prebble@gns.cri.nz ORCid Sangiorgi, Francesca. f.sangiorgi@uu.nl ORCid Krishnan, Srinath. srinath.krishnan@cicero.oslo.no ORCid Hoem, Frida. f.s.hoem@uu.nl ORCid Clowes, Christopher. c.clowes@gns.cri.nz ORCid Dunkley Jones, Tom. t.dunkleyjones@bham.ac.uk ORCid Gasson, Edward G W. E.Gasson@exeter.ac.uk ORCid Kraus, Christoph. christophkraus92@gmail.com ORCid Kulhanek, Denise K. denise.kulhanek@ifg.uni-kiel.de ORCid Meyers, Stephen R. smeyers@geology.wisc.edu ORCid Moossen, Heiko. heiko.moossen@bgc-jena.mpg.de ORCid Warren, Courtney E. courtney.warren@yale.edu ORCid Willmott, Verónica. veronica.willmottveronica.willmott@awi.de@awi.de ORCid Ventura, G Todd. todd.ventura@smu.ca ORCid Bendle, James A J.Bendle@bham.ac.uk ORCid PANGAEA info@pangaea.de geoscientificInformation 163.7194 178.5032 -77.8894 -68.9968 1973-01-29T00:00:00 2007-11-30T00:00:00 https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/12391f51-a3a7-4976-942d-47194a747b20/attachments/12391f51-a3a7-4976-942d-47194a747b20.jpg Credit: Mike Scott BIOSTRATIGRAPHY GDGT SEA SURFACE TEMPERATURE GCMD Earth Science and Earth Science Services Keywords 2024-02-14 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_16-3-2023-06-09(1) GCMD Earth Science and Earth Science Services Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords sciencekeywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords DRILLING PLATFORMS GCMD Platform/Sources Keywords 2024-02-14 geonetwork.thesaurus.external.platform.ardc-curated_gcmd-platforms_16-3-2023-06-15 GCMD Platform/Sources Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms platforms https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms ANTARCTICA ROSS SEA GCMD Locations Keywords 2024-02-14 geonetwork.thesaurus.external.place.ardc-curated_gcmd-locations_16-3-2023-06-09 GCMD Locations Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations locations https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations ANDRILL ODP/DSDP CRP ASP GCMD Project Keywords 2024-02-14 geonetwork.thesaurus.external.project.ardc-curated_gcmd-projects_16-3-2023-06-15(1) GCMD Project Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects projects https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4 This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4