Palynology and dinoflagellate biostratigraphy of Upper Cenozoic sediments from sites 898 and 900, Iberia abyssal plain

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doi: 10.2973/odp.proc.sr.149.256.1996
Author(s): McCarthy, Francine M. G.; Mudie, Peta J.
Author Affiliation(s): Primary:
Brock University, Department of Earth Sciences, St. Catharines, ON, Canada
Other:
Rice University, United States
Ocean Drilling Program, United States
Université Pierre et Marie Curie, France
Dalhousie University, Canada
Universidad de Granada, Spain
Université de Nantes, France
Florida State University, United States
Universidade de Aveiro, Portugal
INTERGEOS, Netherlands
University of Waterloo, Canada
Lamont-Doherty Earth Observatory, United States
University of Tokyo, Japan
GEOMAR, Federal Republic of Germany
University of Leicester, United Kingdom
University of Texas at El Paso, United States
University of Michigan, United States
Universität Kiel, Federal Republic of Germany
Cornell University, United States
California State University, United States
Iowa State University, United States
University of Maryland System, United States
Open University, United Kingdom
University of California, United States
Geological Survey Canada, Canada
Volume Title: Proceedings of the Ocean Drilling Program; scientific results, Iberia abyssal plain; covering Leg 149 of the cruises of the Drilling Vessel JOIDES Resolution; Balboa Harbor, Panama, to Lisbon, Portugal; sites 897-901, 10 March-25 May 1993
Volume Author(s): Whitmarsh, Robert B.; Sawyer, Dale S.; Klaus, Adam; Beslier, Marie-Odile; Collins, Eric S.; Comas, María Carmen; Cornen, Guy; de Kaenel, Eric; Pinheiro, Luis de Menezes; Gervais, Elisabeth; Gibson, Ian L.; Harry, Dennis L.; Hobart, Michael A.; Kanamatsu, Toshiya; Krawcyzk, Charlotte M.; Liu, Li; Lofts, Jeremy C.; Marsaglia, Kathleen M.; Meyers, Philip A.; Milkert, Doris; Milliken, Kitty L.; Morgan, Julia K.; Ramirez, Pedro; Seifert, Karl E.; Shaw, Timothy J.; Wilson, Chris; Yin, Chuan; Zhao, Xixi
Source: Proceedings of the Ocean Drilling Program; scientific results, Iberia abyssal plain; covering Leg 149 of the cruises of the Drilling Vessel JOIDES Resolution; Balboa Harbor, Panama, to Lisbon, Portugal; sites 897-901, 10 March-25 May 1993, Robert B. Whitmarsh, Dale S. Sawyer, Adam Klaus, Marie-Odile Beslier, Eric S. Collins, María Carmen Comas, Guy Cornen, Eric de Kaenel, Luis de Menezes Pinheiro, Elisabeth Gervais, Ian L. Gibson, Dennis L. Harry, Michael A. Hobart, Toshiya Kanamatsu, Charlotte M. Krawcyzk, Li Liu, Jeremy C. Lofts, Kathleen M. Marsaglia, Philip A. Meyers, Doris Milkert, Kitty L. Milliken, Julia K. Morgan, Pedro Ramirez, Karl E. Seifert, Timothy J. Shaw, Chris Wilson, Chuan Yin and Xixi Zhao. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.149, p.241-265. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 65 refs.; illus., incl. 5 plates, 2 tables, geol. sketch map
Summary: Palynomorphs were analyzed from 58 samples from ODP Leg 149 Hole 898A to establish an upper Cenozoic dinoflagellate cyst biostratigraphy for the Iberia Abyssal Plain. Five informal dinocyst biozones are defined based on the stratigraphic ranges of 75 dinocyst morphotypes identified from these sediments. These biozones are compared with dinocyst assemblages identified from a smaller number of samples (16) in Hole 900A, 43 km to the east at the base of the continental rise. A number of the dinocyst biozones defined in Hole 898A can be identified in sediments of equivalent age in Hole 900A, which differs mainly in the low numbers of protoperidinioid (congruentidioid) dinocysts and pollen. There are, however, significant differences between the Pliocene-Pleistocene sequences from these two sites, due to the abundant influx of terrigenous sediments to Site 898 with the beginning of turbidite sedimentation. Turbidite sediments can be identified palynologically by their ratio of marine palynomorphs (dinoflagellate cysts and acritarchs) vs. terrestrial palynomorphs (pollen and spores). This ratio (D:P) provides insight into the provenance of sediments on the Iberia Abyssal Plain while simultaneously providing paleoenvironmental information, allowing changes in depositional and erosional patterns in the eastern Iberia Abyssal Plain to be directly related to large-scale paleoclimatic and paleoceanographic changes in the temperate-subtropical eastern North Atlantic.
Year of Publication: 1996
Research Program: ODP Ocean Drilling Program
Key Words: 09 Paleontology, Paleobotany; 12 Stratigraphy, Historical Geology and Paleoecology; Assemblages; Atlantic Ocean; Biostratigraphy; Biozones; Cenozoic; Dinoflagellata; Europe; Iberian Peninsula; Iberian abyssal plain; Leg 149; Lithofacies; Microfossils; Neogene; North Atlantic; Northeast Atlantic; ODP Site 898; ODP Site 900; Ocean Drilling Program; Palynomorphs; Pleistocene; Pliocene; Quantitative analysis; Quaternary; Southern Europe; Tertiary; Upper Cenozoic
Coordinates: N404059 N404059 W0113616 W0113616
N404106 N404106 W0120725 W0120725
Record ID: 2007088091
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