Cenozoic silicoflagellates and ebridians from ODP Leg 113; biostratigraphy and notes on morphologic variability

Online Access: Get full text
doi: 10.2973/odp.proc.sr.113.142.1990
Author(s): McCartney, Kevin; Wise, Sherwood W., Jr.
Author Affiliation(s): Primary:
Fla. State Univ., Dep. Geol., Tallahassee, FL, United States
Other:
Univ. R.I. at Narragansett, United States
Ocean Drilling Program, United States
Tex. A&M Univ., United States
Lamont-Doherty Geol. Obs., United States
Univ. Oslo, Norway
Alfred Wegener Inst. Polar and Ocean Res., Federal Republic of Germany
Univ. Southampton, United Kingdom
Univ. Tex. at Austin, United States
Woods Hole Oceanogr. Inst., United States
Fed. Inst. Tech., Switzerland
Univ. Tokyo, Japan
Mem. Univ. Newfoundland, Canada
CNRS-Luminy, France
R. Ont. Mus., Canada
Univ. Bremen, Federal Republic of Germany
Wesleyan Univ., United States
Fla. State Univ., United States
Volume Title: Proceedings of the Ocean Drilling Program, Weddell Sea, Antarctica, covering Leg 113 of the cruises of the Drilling Vessel JOIDES Resolution, Valparaiso, Chile, to East Cove, Falkland Islands, sites 689-697, 25 December 1986-11 March 1987
Volume Author(s): Barker, Peter F.; Kennett, James P.; O'Connell, Suzanne B.; Berkowitz, Stephen; Bryant, William R.; Burckle, Lloyd H.; Egeberg, Per Kristian; Fütterer, Dieter Karl; Gersonde, Rainer Erich; Golovchenko, Xenia; Hamilton, Norman; Lawver, Lawrence; Lazarus, David B.; Lonsdale, Malcolm J.; Mohr, Barbara A. R.; Nagao, Toshiyasu; Pereira, Christopher P. G.; Pudsey, Carol J.; Robert, Christian M.; Schandl, Eva S.; Spiess, Volkhard; Stott, Lowell D.; Thomas, Ellen; Thompson, Keith F. M.; Wise, Sherwood W., Jr.; Kennett, Diana M.; Masterson, Amanda; Stewart, Norman J.
Source: Proceedings of the Ocean Drilling Program, Weddell Sea, Antarctica, covering Leg 113 of the cruises of the Drilling Vessel JOIDES Resolution, Valparaiso, Chile, to East Cove, Falkland Islands, sites 689-697, 25 December 1986-11 March 1987, Peter F. Barker, James P. Kennett, Suzanne B. O'Connell, Stephen Berkowitz, William R. Bryant, Lloyd H. Burckle, Per Kristian Egeberg, Dieter Karl Fütterer, Rainer Erich Gersonde, Xenia Golovchenko, Norman Hamilton, Lawrence Lawver, David B. Lazarus, Malcolm J. Lonsdale, Barbara A. R. Mohr, Toshiyasu Nagao, Christopher P. G. Pereira, Carol J. Pudsey, Christian M. Robert, Eva S. Schandl, Volkhard Spiess, Lowell D. Stott, Ellen Thomas, Keith F. M. Thompson, Sherwood W. Wise, Jr., Diana M. Kennett, Amanda Masterson and Norman J. Stewart. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.113, p.729-760. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 111 refs.; illus. incl. 11 tables, 7 plates, sketch map
Summary: Silicoflagellates are present at ODP 113 Sites 689, 690, 693, 695, 696, and 697. These are generally Neogene in age except for Oligocene and Eocene silicoflagellates and ebridians at Sites 689, 690, and 693, and Lower Cretaceous (Albian) silicoflagellates at Site 693. The uppermost Miocene-lowermost Pliocene of most sites contains an interesting assemblage of Distephanus speculum speculum that lack apical rings (the pseudofibula plexus). These co-occur with the youngest ice-rafted sediments deposited during the late Miocene-early Pliocene West Antarctic glaciations and are discussed in detail to show the variability within this group. It is suggested that these variations resulted from environmental stress, the precise nature of which is still undetermined. The pseudofibulid condition has developed at several different times during the Cenozoic within the Distephanus speculum lineage to produce such ecophenotypes. One new form from the pseudofibula plexus, D. s. speculum f. pseudopentagonus, is described. (Auth.)
Year of Publication: 1990
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Antarctic Ocean; Biostratigraphy; Cenozoic; Ebridians; Ice rafting; Invertebrata; Leg 113; Microfossils; Ocean Drilling Program; Paleo-oceanography; Protista; Silicoflagellata; Southern Ocean; Stratigraphy; Taxonomy; Weddell Sea
Coordinates: S704954 S614837 E0030559 W0432706
Record ID: 1991051183
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States