Role of Panama uplift on oceanic freshwater balance

Research Article| March 01, 2001 Role of Panama uplift on oceanic freshwater balance Gerald H. Haug; Gerald H. Haug 1Department of Earth Sciences, Eidgenössische Technische Hochschule, 8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar Ralf Tiedemann; Ralf Tiedemann 2Geomar, 24148 Kiel, Germany Search for other works by this author on: GSW Google Scholar Rainer Zahn; Rainer Zahn 3Department of Earth Sciences, Cardiff University, Cardiff, UK Search for other works by this author on: GSW Google Scholar A. Christina Ravelo A. Christina Ravelo 4Institute of Marine Sciences, University of California, Santa Cruz, California 95064, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Gerald H. Haug 1Department of Earth Sciences, Eidgenössische Technische Hochschule, 8092 Zürich, Switzerland Ralf Tiedemann 2Geomar, 24148 Kiel, Germany Rainer Zahn 3Department of Earth Sciences, Cardiff University, Cardiff, UK A. Christina Ravelo 4Institute of Marine Sciences, University of California, Santa Cruz, California 95064, USA Publisher: Geological Society of America Received: 17 Aug 2000 Revision Received: 04 Dec 2000 Accepted: 04 Dec 2000 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (3): 207–210. https://doi.org/10.1130/0091-7613(2001)029<0207:ROPUOO>2.0.CO;2 Article history Received: 17 Aug 2000 Revision Received: 04 Dec 2000 Accepted: 04 Dec 2000 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Gerald H. Haug, Ralf Tiedemann, Rainer Zahn, A. Christina Ravelo; Role of Panama uplift on oceanic freshwater balance. Geology 2001;; 29 (3): 207–210. doi: https://doi.org/10.1130/0091-7613(2001)029<0207:ROPUOO>2.0.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 Comparison between planktic foraminiferal oxygen isotope records from the Caribbean Sea (Ocean Drilling Program [ODP] Site 999) and the equatorial east Pacific (ODP Site 851) suggests an increase in Caribbean surface-water salinity between 4.7 and 4.2 Ma. The modern Atlantic-Pacific salinity contrast of about 1‰ became fully established at 4.2 Ma as reflected by a 0.5‰ planktic foraminifera 18O enrichment in the Caribbean Sea. This is interpreted as the result of restricted surface-water exchange between the tropical Atlantic and Pacific in response to the shoaling of the Central American seaway. As a consequence, the Atlantic and Pacific surface-ocean circulation regime changed, as did the freshwater balance between the major ocean basins. Simultaneous shifts in benthic carbon isotope records in the Caribbean Sea suggest an intensification in North Atlantic thermohaline circulation. These results indicate that the Panamanian isthmus formation caused several new ocean-atmosphere feedback mechanisms that have affected climate since the early Pliocene. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.