A paleontological synthesis of ODP Leg 210, Newfoundland Basin

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doi: 10.2973/odp.proc.sr.210.115.2007
Author(s): Urquhart, Elspeth; Gardin, Silvia; Leckie, R. Mark; Wood, S. A.; Pross, Jörg; Georgescu, M. D.; Ladner, Bryan C.; Takata, Hiroyuki
Ocean Drilling Program, Leg 210, Shipboard Scientfic Party, College Station, TX
Author Affiliation(s): Primary:
Rosenstiel School and Marine and Atmospheric Science, Miami, FL, United States
Other:
IFREMER Centre de Brest, France
Ocean Drilling Program, United States
University of Michigan, United States
University of Leicester, United Kingdom
Stockholm University, Sweden
Université Pierre et Marie Curie, France
Memorial University of Newfoundland, Canada
Lamont-Doherty Earth Observatory, United States
Florida State University, United States
University of Massachusetts, United States
National Taiwan Ocean University, Taiwan
Ecole et Observatoire des Sciences de la Terre, France
California State University, Northridge, United States
Bundesanstalt für Geowissenschaften und Rohstoffe, Federal Republic of Germany
Universität Tübingen, Federal Republic of Germany
University of Edinburgh, United Kingdom
Rice University, United States
Pennsylvania State University, United States
University of Wyoming, United States
University of Tokyo, Japan
National University of Ireland, Galway, Ireland
Shimane University, Japan
Rosenstiel School of Marine and Atmospheric Science, United States
Open University, United Kingdom
University of California, Santa Cruz, United States
Johann Wolfgang Goethe University of Frankfurt, Federal Republic of Germany
University of Saskatchewan, Canada
Total Biostratigraphic Services, United States
Volume Title: Proceedings of the Ocean Drilling Program; scientific results; drilling the Newfoundland half of the Newfoundland-Iberia transect; the first conjugate margin drilling in a nonvolcanic rift; covering Leg 210 of the cruises of the Drilling Vessel JOIDES Resolution; St. Georges, Bermuda, to St. John's, Newfoundland; sites 1276 and 1277; 6 July-6 September 2003
Volume Author(s): Tucholke, Brian E.; Sibuet, Jean-Claude; Klaus, Adam; Arnaboldi, Michela; Delius, Heike; Engstrom, Anna V.; Galbrun, Bruno; Gardin, Silvia; Hiscott, Richard N.; Karner, Garry D.; Ladner, Bryan C.; Leckie, R. Mark; Lee, Chao-Shing; Manatschal, Gianreto; Marsaglia, Kathleen M.; Pletsch, Thomas K.; Pross, Jörg; Robertson, Alastair H. F.; Sawyer, Dale S.; Sawyer, Derek E.; Shillington, Donna J.; Shirai, Masaaki; Shryane, Thérèse; Stant, Sharon Audra; Takata, Hiroyuki; Urquhart, Elspeth; Wilson, Chris; Zhao, Xixi
Source: Proceedings of the Ocean Drilling Program; scientific results; drilling the Newfoundland half of the Newfoundland-Iberia transect; the first conjugate margin drilling in a nonvolcanic rift; covering Leg 210 of the cruises of the Drilling Vessel JOIDES Resolution; St. Georges, Bermuda, to St. John's, Newfoundland; sites 1276 and 1277; 6 July-6 September 2003, Brian E. Tucholke, Jean-Claude Sibuet, Adam Klaus, Michela Arnaboldi, Heike Delius, Anna V. Engstrom, Bruno Galbrun, Silvia Gardin, Richard N. Hiscott, Garry D. Karner, Bryan C. Ladner, R. Mark Leckie, Chao-Shing Lee, Gianreto Manatschal, Kathleen M. Marsaglia, Thomas K. Pletsch, Jörg Pross, Alastair H. F. Robertson, Dale S. Sawyer, Derek E. Sawyer, Donna J. Shillington, Masaaki Shirai, Thérèse Shryane, Sharon Audra Stant, Hiroyuki Takata, Elspeth Urquhart, Chris Wilson and Xixi Zhao; Ocean Drilling Program, Leg 210, Shipboard Scientfic Party, College Station, TX. Proceedings of the Ocean Drilling Program, Scientific Results (CD ROM), Vol.210, 53p. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 1096-2514
Note: In English. Includes appendices. 87 refs.WWW format, ISSN 1096-7451; illus., incl. 4 plates, sketch map
Summary: Sediments recovered from Ocean Drilling Program Leg 210 Hole 1276A range in age from Early Cretaceous (earliest Albian) to Paleogene (earliest Oligocene). In this study, samples were processed and analyzed for micropaleontological and palynological content, as well as sedimentary components. Core recovery from this site was good (85% between 800 and 1725.16 meters below seafloor), and the majority of samples processed yielded microfossils of some nature. Although none of the major groups are consistently present in all samples, calcareous nannofossils, agglutinated benthic foraminifers, and radiolarians do occur in many samples. The best age constraints for Hole 1276A are provided by calcareous nannofossils and dinoflagellate cysts. Age-diagnostic planktonic foraminifers are more commonly found in redeposited turbidite sandstones rather than in the autochthonous pelagic mudrocks. The depositional environments of the sediments have been interpreted as varying in oxygenation but having been deposited at abyssal depths (>2000 m) near or below the calcite carbonate depth (CCD). Almost uninterrupted deepwater deposition since the Aptian is evidenced both by the evolutionary succession of biota recovered from the sediments and by the sedimentary history of turbidites and gravity flow deposits derived from neritic and bathyal sources on the adjacent margin. A condensed interval recorded in the Turonian-Maastrichtian is likely associated with sediment starvation at times of high global sea level. A disconformity and condensed interval in the lower middle Eocene (∼48.5-43.7 Ma) is associated with a change in global sea level and may be associated with invigorated deepwater current activity. Anoxic conditions affected the deep seafloor of the North Atlantic during Oceanic Anoxic Event (OAE) 1b (earliest Albian, ∼112 Ma) and OAE2 (Cenomanian-Turonian boundary interval, ∼93.5 Ma). Cooling during the early Turonian followed the vast carbon burial associated with OAE2 based on calcareous nannofossil assemblages. The recovery of a nearly complete Cretaceous-Paleogene boundary transition represents one of the deepest-water records of the end-Cretaceous event known. Another important paleontological discovery from Hole 1276A was the redeposited large-size benthic foraminifers of Campanian-Maastrichtian and latest Paleocene-early Eocene ages, which point to a nearby source of shallow, warmwater carbonates during these two periods of global warmth.
Year of Publication: 2007
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Atlantic Ocean; Benthic taxa; Biostratigraphy; Biozones; Canada; Cenozoic; Chronostratigraphy; Continental margin; Cores; Cretaceous; Deep-sea environment; Depositional environment; Dinoflagellata; Eastern Canada; Flemish Cap; Floral list; Foraminifera; Grand Banks; Invertebrata; Leg 210; Lithofacies; Lithostratigraphy; Marine environment; Mesozoic; Microfossils; Nannofossils; Newfoundland; Newfoundland Basin; Newfoundland and Labrador; North Atlantic; Northwest Atlantic; ODP Site 1276; Ocean Drilling Program; Paleo-oceanography; Paleoenvironment; Paleogene; Palynomorphs; Planktonic taxa; Plantae; Protista; Sedimentary rocks; Stratigraphic boundary; Stratigraphic units; Tertiary
Coordinates: N452400 N452400 W0444700 W0444700
Record ID: 2007087763
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