δ18O and Marion Plateau backstripping: Combining two approaches to constrain late middle Miocene eustatic amplitude

Research Article| September 01, 2004 δ18O and Marion Plateau backstripping: Combining two approaches to constrain late middle Miocene eustatic amplitude Cédric M. John; Cédric M. John 1Universität Potsdam, Institut für Geowissenschaften, Postfach 601553, 14415 Potsdam, Germany Search for other works by this author on: GSW Google Scholar Garry D. Karner; Garry D. Karner 2Lamont-Doherty Earth Observatory, 61 Route 9W, P.O. Box 1000, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Maria Mutti Maria Mutti 3Universität Potsdam, Institut für Geowissenschaften, Postfach 601553, 14415 Potsdam, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Cédric M. John 1Universität Potsdam, Institut für Geowissenschaften, Postfach 601553, 14415 Potsdam, Germany Garry D. Karner 2Lamont-Doherty Earth Observatory, 61 Route 9W, P.O. Box 1000, Palisades, New York 10964, USA Maria Mutti 3Universität Potsdam, Institut für Geowissenschaften, Postfach 601553, 14415 Potsdam, Germany Publisher: Geological Society of America Received: 24 Feb 2004 Revision Received: 12 May 2004 Accepted: 17 May 2004 First Online: 03 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (9): 829–832. https://doi.org/10.1130/G20580.1 Article history Received: 24 Feb 2004 Revision Received: 12 May 2004 Accepted: 17 May 2004 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Cédric M. John, Garry D. Karner, Maria Mutti; δ18O and Marion Plateau backstripping: Combining two approaches to constrain late middle Miocene eustatic amplitude. Geology 2004;; 32 (9): 829–832. doi: https://doi.org/10.1130/G20580.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract δ18Obenthic values from Leg 194 Ocean Drilling Program Sites 1192 and 1195 (drilled on the Marion Plateau) were combined with deep-sea values to reconstruct the magnitude range of the late middle Miocene sea-level fall (13.6–11.4 Ma). In parallel, an estimate for the late middle Miocene sea-level fall was calculated from the stratigraphic relationship identified during Leg 194 and the structural relief of carbonate platforms that form the Marion Plateau. Corrections for thermal subsidence induced by Late Cretaceous rifting, flexural sediment loading, and sediment compaction were taken into account. The response of the lithosphere to sediment loading was considered for a range of effective elastic thicknesses (10 < Te < 40 km). By overlapping the sea-level range of both the deep-sea isotopes and the results from the backstripping analysis, we demonstrate that the amplitude of the late middle Miocene sea-level fall was 45–68 m (56.5 ± 11.5 m). Including an estimate for sea-level variation using the δ18Obenthic results from the subtropical Marion Plateau, the range of sea-level fall is tightly constrained between 45 and 55 m (50.0 ± 5.0 m). This result is the first precise quantitative estimate for the amplitude of the late middle Miocene eustatic fall that sidesteps the errors inherent in using benthic foraminifera assemblages to predict paleo–water depth. The estimate also includes an error analysis for the flexural response of the lithosphere to both water and sediment loads. Our result implies that the extent of ice buildup in the Miocene was larger than previously estimated, and conversely that the amount of cooling associated with this event was less important. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.