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Fenner, Juliane M (1991): Diatom abundances in ODP Leg 114 holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.754589, Supplement to: Fenner, JM (1991): Late Pliocene - Quaternary quantitative diatom stratigraphy in the atlantic sector of the Southern Ocean. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 97-121, https://doi.org/10.2973/odp.proc.sr.114.133.1991

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Abstract:
The practically continuous, paleomagnetically dated late Gauss-Brunhes sediment profiles of ODP Sites 699 and 701, south of the present Polar Front Zone (PFZ), and Site 704, north of the present PFZ, are used for a high-resolution study of abundance fluctuations of eight stratigraphic marker species in space and time. Ecological restrictions and preferences of the diatom species Hemidiscus karstenii, Actinocyclus ingens f. planus, Thalassiosira elliptipora, Thalassiosira kolbei, Thalassiosira vulnifica, Simonseniella barboi, Cosmiodiscus insignis, and Nitzschia weaveri are deduced.
The ages of their first abundant appearance datums (FAAD), last-appearance datums (LAD), and last abundant appearance datums (LAAD) at the three sites are determined. The interpolated datum ages agree relatively well with those determined by other authors, if one interprets most of their LADs as LAADs. FAADs and LAADs produce more accurate datums than LADs. For the late Matuyama (younger than approximately 2.0 Ma), when PFZ fluctuations effected all three site sites, the datum ages determined agree within the methodically caused limits of accuracy for each datum. For the early Matuyama (older than approximately 2.0 Ma) the results can be interpreted as either that the ages of the FAAD of T. kolbei and LAAD of T. vulnifica datums determined at Sites 699 and 701 are more reliable or that these datums are diachronous between these two sites and Site 704. Such a diachroneity could be caused by different paleoceanographic conditions (stable subantarctic conditions over Site 704 and stable antarctic conditions over Sites 699 and 701).
A few taxonomic changes were necessary. One new genus is defined (Simonseniella gen. nov.) and five new combinations are proposed: Simonseniella barboi (Brun) comb, nov., Simonseniella praebarboi (Schrader) comb, nov., Simonseniella curvirostris (Jousé) comb, nov., Thalassiosira elliptipora (Donahue) comb, nov., and Thalassiosira vulnifica (Gombos) comb. nov.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -50.468833 * Median Longitude: -15.489350 * South-bound Latitude: -52.985000 * West-bound Longitude: -30.677000 * North-bound Latitude: -46.879000 * East-bound Longitude: 7.420800
Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-05-03T10:14:00
Event(s):
114-699A * Latitude: -51.542000 * Longitude: -30.677000 * Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-03-26T15:29:00 * Elevation: -3716.0 m * Penetration: 518.1 m * Recovery: 356.52 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 56 cores; 518.1 m cored; 0 m drilled; 68.8 % recovery
114-701C * Latitude: -52.985000 * Longitude: -23.211700 * Date/Time Start: 1987-04-08T01:30:00 * Date/Time End: 1987-04-10T21:15:00 * Elevation: -4647.0 m * Penetration: 481.4 m * Recovery: 331.06 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 51 core; 481.3 m cored; 0 m drilled; 68.8 % recovery
114-704A * Latitude: -46.879000 * Longitude: 7.420800 * Date/Time Start: 1987-04-25T13:30:00 * Date/Time End: 1987-04-26T06:54:00 * Elevation: -2543.0 m * Penetration: 282.7 m * Recovery: 224.55 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 282.7 m cored; 0 m drilled; 79.4 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Fenner, JM (1991): (Appendix) Diatom abundances in ODP Hole 114-699A. https://doi.org/10.1594/PANGAEA.754575
  2. Fenner, JM (1991): (Appendix) Diatom abundances in ODP Hole 114-701C. https://doi.org/10.1594/PANGAEA.754578
  3. Fenner, JM (1991): (Appendix) Diatom abundances in ODP Hole 114-704. https://doi.org/10.1594/PANGAEA.754588