Microfossil, stable isotope, and facies of a near-continuous core from the Gippsland Basin
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2013
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| _version_ | 1867170466907553792 |
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| author | Gallagher, Stephen John Villa, Giuliana Drysdale, Russell N Wade, Bridget S Scher, Howie D Li, Qianyu Wallace, Malcolm W Holdgate, Guy R |
| author_facet | Gallagher, Stephen John Villa, Giuliana Drysdale, Russell N Wade, Bridget S Scher, Howie D Li, Qianyu Wallace, Malcolm W Holdgate, Guy R |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_823093 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Microfossil, stable isotope, and facies of a near-continuous core from the Gippsland Basin Gallagher, Stephen John Villa, Giuliana Drysdale, Russell N Wade, Bridget S Scher, Howie D Li, Qianyu Wallace, Malcolm W Holdgate, Guy R Australia; Groper-1; Sampling well; WELL 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. |
| title | Microfossil, stable isotope, and facies of a near-continuous core from the Gippsland Basin |
| topic | Australia; Groper-1; Sampling well; WELL |
| url | https://doi.org/10.1594/PANGAEA.823093 |