Preservation of the alkenone paleotemperature proxy in uplifted marine sequences: A test from the Vrica outcrop, Crotone, Italy

Abstract

Research Article| February 01, 2009 Preservation of the alkenone paleotemperature proxy in uplifted marine sequences: A test from the Vrica outcrop, Crotone, Italy Laura C. Cleaveland; Laura C. Cleaveland 1Department of Geological Sciences, Brown University, Providence, Rhode Island 02912, USA *Current address: Luther College, Environmental Studies Program, Decorah, Iowa 52101, USA Search for other works by this author on: GSW Google Scholar Timothy D. Herbert Timothy D. Herbert 1Department of Geological Sciences, Brown University, Providence, Rhode Island 02912, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Laura C. Cleaveland *Current address: Luther College, Environmental Studies Program, Decorah, Iowa 52101, USA 1Department of Geological Sciences, Brown University, Providence, Rhode Island 02912, USA Timothy D. Herbert 1Department of Geological Sciences, Brown University, Providence, Rhode Island 02912, USA Publisher: Geological Society of America Received: 10 May 2008 Revision Received: 14 Oct 2008 Accepted: 15 Oct 2008 First Online: 12 Oct 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2009 Geological Society of America Geology (2009) 37 (2): 179–182. https://doi.org/10.1130/G25148A.1 Article history Received: 10 May 2008 Revision Received: 14 Oct 2008 Accepted: 15 Oct 2008 First Online: 12 Oct 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Laura C. Cleaveland, Timothy D. Herbert; Preservation of the alkenone paleotemperature proxy in uplifted marine sequences: A test from the Vrica outcrop, Crotone, Italy. Geology 2009;; 37 (2): 179–182. doi: https://doi.org/10.1130/G25148A.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 The alkenone organic paleotemperature proxy has been used with great success to generate sea-surface temperature (SST) records from diverse areas of the world ocean. To date, however, this methodology has been applied almost exclusively to unconsolidated marine sediments; the fidelity of alkenone preservation in lithified, uplifted marine sequences exposed on land has not been explicitly investigated. Such sedimentary sequences have been buried at depths of hundreds of meters to kilometers before uplift, and in addition have been exposed to oxic pore fluids and subaerial weathering upon ascent to the surface, any of which may cause alteration of biomarker compounds. In this study, we compare alkenone SST estimates from the Vrica land section in Crotone, Italy, with alkenone SST estimates derived from coeval marine sediments retrieved at Ocean Drilling Program Site 964, which is ~300 km offshore of the Vrica location. We find that SST records from the land and marine sections are well correlated, showing similar mean values, cyclicity, and amplitudes. Although results from different sedimentary sequences might depend on the lithologies, burial depths, and weathering histories of individual outcrops, this study suggests that it will be possible to reconstruct quantitative SST histories from marine strata exposed on land. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.