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Absolute abundances of benthic and planktonic foraminifers in samples of ODP Hole 149-901A (Table 1)

Dataset homepage

Citation

Collins E S, Kuhnt W, Scott D B (1996). Absolute abundances of benthic and planktonic foraminifers in samples of ODP Hole 149-901A (Table 1). PANGAEA - Publishing Network for Geoscientific and Environmental Data. Occurrence dataset https://doi.org/10.1594/pangaea.761572 accessed via GBIF.org on 2023-09-30.

Description

Dark gray laminated silty claystones (Unit II) drilled at Site 901 contain Tithonian benthic foraminifer assemblages that indicate a neritic depositional environment and probably dysaerobic bottom-water conditions. Three benthic foraminifer zones are distinguished within Unit II. The upper part of the unit is dominated by Spirillina polygyrata, contains Globospirillina spp. (Samples 149-901A-3R-1, 10-12 cm, to 149-901A-3R-1, 75-77 cm) and is interpreted as late Tithonian. Samples 149-901A-3R-1, 87-89 cm, to 149-901A-6R-1, 74-76 cm, contain Epistomina uhligi and Lingulina franconica and are probably early Tithonian. The early Tithonian Neobulimina atlantica Zone is characterized by the occurrence of the zonal marker and Epistomina uhligi and reaches from Sample 149-901A-6R-1, 128-130 cm, to the base of the drilled-sequence. The sediments and benthic foraminiferal assemblage characteristics of the Tithonian-aged sequence in Hole 901A are unknown elsewhere in the Atlantic and may represent deposition in a marginal shelf basin with increased terrigenous and organic flux.

Taxonomic Coverages

  1. Chromista
    rank: kingdom
  2. Foraminifera
    rank: kingdom
  3. Animalia
    rank: kingdom
  4. Arthropoda
    rank: kingdom

Geographic Coverages

Event: 149-901A, South Atlantic Ocean ;

Bibliographic Citations

Contacts

Eric S Collins
originator
Wolfgang Kuhnt
originator
David B Scott
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: https://www.pangaea.de
Frank-Oliver Glöckner
administrative point of contact
Robert Huber
administrative point of contact
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