Microfossil, stable isotope, and facies of a near-continuous core from the Gippsland Basin


Fossil, facies, and isotope analyses of an early high-paleolatitude (55°S) section suggests a highly unstable East Antarctic Ice Sheet from 32 to 27 Myr. The waxing and waning of this ice sheet from 140% to 40% of its present volume caused sea level changes of ±25 m (ranging from -30 to +50 m) related to periodic glacial (100,000 to 200,000 years) and shorter interglacial events. The near-field Gippsland sea level (GSL) curve shares many similarities to the far-field New Jersey sea level (NJSL) estimates. However, there are possible resolution errors due to biochronology, taphonomy, and paleodepth estimates and the relative lack of lowstand deposits (in NJSL) that prevent detailed correlations with GSL. Nevertheless, the lateral variations in sea level between the GSL section and NJSL record that suggest ocean siphoning and antisiphoning may have propagated synchronous yet variable sea levels.

Supplement to: Gallagher, Stephen John; Villa, Giuliana; Drysdale, Russell N; Wade, Bridget S; Scher, Howie D; Li, Qianyu; Wallace, Malcolm W; Holdgate, Guy R (2013): A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr. Paleoceanography, 28(1), 1-13

DOI https://doi.org/10.1594/PANGAEA.823093
Related Identifier IsSupplementTo https://doi.org/10.1029/2012PA002326
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.823093
Creator Gallagher, Stephen John ORCID logo; Villa, Giuliana; Drysdale, Russell N (ORCID: 0000-0001-7867-031X); Wade, Bridget S ORCID logo; Scher, Howie D; Li, Qianyu; Wallace, Malcolm W ORCID logo; Holdgate, Guy R
Publisher PANGAEA
Publication Year 2013
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (147.416 LON, -38.942 LAT); Australia