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Cenozoic sea-level and cryospheric evolution from deep-sea geochemical and continental margin records

Science advances, 2020-05, Vol.6 (20), p.eaaz1346-eaaz1346 [Peer Reviewed Journal]

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). ;Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). 2020 The Authors ;ISSN: 2375-2548 ;EISSN: 2375-2548 ;DOI: 10.1126/sciadv.aaz1346 ;PMID: 32440543

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  • Title:
    Cenozoic sea-level and cryospheric evolution from deep-sea geochemical and continental margin records
  • Author: Miller, Kenneth G ; Browning, James V ; Schmelz, W John ; Kopp, Robert E ; Mountain, Gregory S ; Wright, James D
  • Subjects: Geochemistry ; Geology ; Review ; Reviews ; SciAdv reviews
  • Is Part Of: Science advances, 2020-05, Vol.6 (20), p.eaaz1346-eaaz1346
  • Description: Using Pacific benthic foraminiferal δ O and Mg/Ca records, we derive a Cenozoic (66 Ma) global mean sea level (GMSL) estimate that records evolution from an ice-free Early Eocene to Quaternary bipolar ice sheets. These GMSL estimates are statistically similar to "backstripped" estimates from continental margins accounting for compaction, loading, and thermal subsidence. Peak warmth, elevated GMSL, high CO , and ice-free "Hothouse" conditions (56 to 48 Ma) were followed by "Cool Greenhouse" (48 to 34 Ma) ice sheets (10 to 30 m changes). Continental-scale ice sheets ("Icehouse") began ~34 Ma (>50 m changes), permanent East Antarctic ice sheets at 12.8 Ma, and bipolar glaciation at 2.5 Ma. The largest GMSL fall (27 to 20 ka; ~130 m) was followed by a >40 mm/yr rise (19 to 10 ka), a slowing (10 to 2 ka), and a stillstand until ~1900 CE, when rates began to rise. High long-term CO caused warm climates and high sea levels, with sea-level variability dominated by periodic Milankovitch cycles.
  • Publisher: United States: American Association for the Advancement of Science
  • Language: English
  • Identifier: ISSN: 2375-2548
    EISSN: 2375-2548
    DOI: 10.1126/sciadv.aaz1346
    PMID: 32440543
  • Source: PubMed Central
    DOAJ Directory of Open Access Journals
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