Abstract
Research Article| January 01, 1997 Paleoclimatic significance of the stratigraphic occurrence of photosynthetic biomarker pigments in the Nordic seas Antoni Rosell-Melé; Antoni Rosell-Melé 1School of Chemistry, University of Bristol, BS8 1TS Bristol, United Kingdom Search for other works by this author on: GSW Google Scholar Nalân Koç Nalân Koç 2Department of Geology, University of Bergen, N-5007 Bergen, Norway Search for other works by this author on: GSW Google Scholar Author and Article Information Antoni Rosell-Melé 1School of Chemistry, University of Bristol, BS8 1TS Bristol, United Kingdom Nalân Koç 2Department of Geology, University of Bergen, N-5007 Bergen, Norway Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1997) 25 (1): 49–52. https://doi.org/10.1130/0091-7613(1997)025<0049:PSOTSO>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 MailTo Tools Icon Tools Get Permissions Search Site Citation Antoni Rosell-Melé, Nalân Koç; Paleoclimatic significance of the stratigraphic occurrence of photosynthetic biomarker pigments in the Nordic seas. Geology 1997;; 25 (1): 49–52. doi: https://doi.org/10.1130/0091-7613(1997)025<0049:PSOTSO>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 Sedimentary chlorins and porphyrins are diagenetic products of chlorophyll molecules and are considered to be chemical fossils or biomarkers of phototrophic organisms. The stratigraphic occurrence of such components was investigated in four cores from the Nordic seas that span the last deglacial period. The presence of chlorins in all the samples deposited during the Younger Dryas and at the end of the last glacial period indicated that photosynthetic activity occurred during these cold episodes and hence that ice-free conditions existed, at least seasonally, in the Nordic seas. Vanadyl porphyrins were found in sediments deposited during Termination Ia in only two of the cores, close to the Barents Shelf. We argue that they derive from erosion and advection of organic-rich deposits as ice-rafted debris during melting of the Barents ice sheet. Thus, we suggest that the sedimentary occurrence of vanadyl porphyrins in Nordic sea cores can be used as a marker of ice-rafted debris from the Barents ice sheet. The absence of such components during Termination Ib indicates that the complete destruction of the Barents ice sheet took place during the first stage of the deglaciation. 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.
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