CHRONOSTRATIGRAPHIC FRAMEWORK FOR UPPER CAMPANIAN-MAASTRICHTIAN SEDIMENTS ON THE BLAKE NOSE (SUBTROPICAL NORTH ATLANTIC)

Research Article| April 01, 2008 CHRONOSTRATIGRAPHIC FRAMEWORK FOR UPPER CAMPANIAN-MAASTRICHTIAN SEDIMENTS ON THE BLAKE NOSE (SUBTROPICAL NORTH ATLANTIC) Brian T. Huber; Brian T. Huber 4 1Department of Paleobiology, MRC-121, Smithsonian Museum of Natural History, Washington, DC 20013-7012 4Correspondence author. E-mail: huberb@si.edu Search for other works by this author on: GSW Google Scholar Kenneth G. MacLeod; Kenneth G. MacLeod 2Department of Geological Sciences, University of Missouri-Columbia, Columbia, MO 65211 Search for other works by this author on: GSW Google Scholar Nataliya A. Tur Nataliya A. Tur 3All-Russian Geological Institute (VSEGEI), Sredny pr., 74, St.-Petersburg, 199106 Russia Search for other works by this author on: GSW Google Scholar Journal of Foraminiferal Research (2008) 38 (2): 162–182. https://doi.org/10.2113/gsjfr.38.2.162 Article history received: 04 Oct 2007 accepted: 19 Nov 2007 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Brian T. Huber, Kenneth G. MacLeod, Nataliya A. Tur; CHRONOSTRATIGRAPHIC FRAMEWORK FOR UPPER CAMPANIAN-MAASTRICHTIAN SEDIMENTS ON THE BLAKE NOSE (SUBTROPICAL NORTH ATLANTIC). Journal of Foraminiferal Research 2008;; 38 (2): 162–182. doi: https://doi.org/10.2113/gsjfr.38.2.162 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 SocietyJournal of Foraminiferal Research Search Advanced Search Abstract A new chronostratigraphic framework is presented for upper Campanian-Maastrichtian pelagic sediments cored at DSDP/ODP Sites 390A/1049, 1050, and 1052, which were drilled across a 1300-m depth transect on the Blake Nose (subtropical western Atlantic Ocean). The planktonic foraminiferal zonation is based on standard global biozones for this interval, but rare and sporadic occurrence of two zonal biomarkers, Gansserina gansseri and Globotruncana aegyptiaca, precludes reliable identification of the nominate zones for those species. The Pseudoguembelina palpebra Partial-range Zone is defined as a means of subdividing this upper Campanian biostratigraphic interval. Planktonic foraminiferal, calcareous nannofossil and paleomagnetic datums are integrated to construct reliable age-depth curves for each of the Blake Nose drill sites. These age models are largely confirmed by Sr-isotopic data and suggest significant unconformities at various positions within the sections. Compilation of stable isotope datasets for this time interval from the Blake Nose sites reveals no significant shifts in δ 18O and δ 13C at the time of the inoceramid bivalve extinction (now dated as 68.5–68.7 Ma in the Blake Nose sections) and no correlation with proposed Campanian-Maastrichtian glacial intervals. However, benthic warming associated with Deccan volcanism during the late Maastrichtian is supported. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.