Carbon-isotope composition of Lower Cretaceous fossil wood: Ocean-atmosphere chemistry and relation to sea-level change

Abstract

Research Article| February 01, 1999 Carbon-isotope composition of Lower Cretaceous fossil wood: Ocean-atmosphere chemistry and relation to sea-level change Darren R. Gröcke; Darren R. Gröcke 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Stephen P. Hesselbo; Stephen P. Hesselbo 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Hugh C. Jenkyns Hugh C. Jenkyns 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Darren R. Gröcke 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Stephen P. Hesselbo 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Hugh C. Jenkyns 1Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (2): 155–158. https://doi.org/10.1130/0091-7613(1999)027<0155:CICOLC>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Darren R. Gröcke, Stephen P. Hesselbo, Hugh C. Jenkyns; Carbon-isotope composition of Lower Cretaceous fossil wood: Ocean-atmosphere chemistry and relation to sea-level change. Geology 1999;; 27 (2): 155–158. doi: https://doi.org/10.1130/0091-7613(1999)027<0155:CICOLC>2.3.CO;2 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 The carbon-isotope composition of fossil wood fragments, collected through a biostratigraphically well-constrained Aptian (Lower Cretaceous) shallow-marine siliciclastic succession on the Isle of Wight, southern Britain, shows distinct variations with time. The results indicate that the stratigraphic signature of δ13Cwood through the Aptian was influenced primarily by fluctuations in the isotopic composition of CO2 in the global ocean-atmosphere system, as registered in marine carbonates elsewhere, and was not governed by local paleoenvironmental and/or paleoecological factors. Negative and positive excursions in δ13Cwood through the lower Aptian occur in phase with inferred transgressions and regressions, respectively—a pattern that contrasts with that observed in many previous studies for different time intervals. The relationship between δ13C variations and relative sea-level change is tentatively interpreted as a response to various climatic and eustatic factors, relating to rapid sea-floor spreading, thermal uplift of ocean floor, emplacement of plateaus, volcanic CO2 emissions, weathering, and sedimentary rate. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.