Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments
Palynomorphs were studied in samples from Ocean Drilling Program (ODP) Leg 189, Hole 1168A (slope of the western margin of Tasmania; 2463 m water depth). Besides organic-walled dinoflagellate cysts (dinocysts), broad categories of other palynomorphs were quantified in terms of relative abundance. In...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.779871 2023-05-15T13:42:10+02:00 Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments Brinkhuis, Henk Munsterman, Dirk K Sengers, S Sluijs, Appy Warnaar, Jeroen Williams, Graham L LATITUDE: -42.609680 * LONGITUDE: 144.412700 * DATE/TIME START: 2000-02-29T17:30:00 * DATE/TIME END: 2000-03-24T22:15:00 2003-04-24 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.779871 https://doi.org/10.1594/PANGAEA.779871 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.779871 https://doi.org/10.1594/PANGAEA.779871 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Brinkhuis, Henk; Munsterman, Dirk K; Sengers, S; Sluijs, Appy; Warnaar, Jeroen; Williams, Graham L (2003): Late Eocene-Quaternary dinoflagellate cysts from ODP Site 1168, off western Tasmania. In: Exon, NF; Kennett, JP; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 189, 1-36, https://doi.org/10.2973/odp.proc.sr.189.105.2003 189-1168A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.779871 https://doi.org/10.2973/odp.proc.sr.189.105.2003 2023-01-20T07:32:30Z Palynomorphs were studied in samples from Ocean Drilling Program (ODP) Leg 189, Hole 1168A (slope of the western margin of Tasmania; 2463 m water depth). Besides organic-walled dinoflagellate cysts (dinocysts), broad categories of other palynomorphs were quantified in terms of relative abundance. In this contribution, we provide an overview of the early late Eocene-Quaternary dinocyst distribution and illustrate main trends in palynomorph distribution. Dinocyst species throughout Hole 1168A are largely cosmopolitan with important contributions of typical low-latitude taxa and virtual absence of endemic Antarctic taxa. Dinocyst stratigraphic distribution broadly matches that known from the Northern Hemisphere and equatorial regions, although significant differences are noted. Selected potentially biochronostratigraphically useful events are summarized. The distribution of dinocysts in the middle-upper Miocene interval is rather patchy, probably due to prolonged exposure to oxygen. An important general aspect in the dinocyst assemblages is the near absence of Antarctic endemic species and the apparent influence of relatively warm waters throughout the succession at Site 1168. General palynomorph distribution indicates continued deepening from an initial shallow, even restricted, marine setting from late Eocene-Quaternary times. A curious massive influx of small skolochorate acritarchs is recorded throughout the late early-early middle Miocene; the significance of this signal is not yet understood. A general long-term oligotrophic nature of the surface waters influencing Site 1168 is suggested from the low abundance of (proto) peridinioid, presumably heterotrophic, species. The overall dinocyst distribution pattern corresponds to the long-term existence of a Leeuwin-like current influencing the region, including Site 1168, confirming results of earlier studies on other microfossil groups. The occasional influence of colder surface water conditions is, however, also apparent, notably during the late ... Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Indian ENVELOPE(144.412700,144.412700,-42.609680,-42.609680) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
189-1168A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP |
spellingShingle |
189-1168A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP Brinkhuis, Henk Munsterman, Dirk K Sengers, S Sluijs, Appy Warnaar, Jeroen Williams, Graham L Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
topic_facet |
189-1168A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP |
description |
Palynomorphs were studied in samples from Ocean Drilling Program (ODP) Leg 189, Hole 1168A (slope of the western margin of Tasmania; 2463 m water depth). Besides organic-walled dinoflagellate cysts (dinocysts), broad categories of other palynomorphs were quantified in terms of relative abundance. In this contribution, we provide an overview of the early late Eocene-Quaternary dinocyst distribution and illustrate main trends in palynomorph distribution. Dinocyst species throughout Hole 1168A are largely cosmopolitan with important contributions of typical low-latitude taxa and virtual absence of endemic Antarctic taxa. Dinocyst stratigraphic distribution broadly matches that known from the Northern Hemisphere and equatorial regions, although significant differences are noted. Selected potentially biochronostratigraphically useful events are summarized. The distribution of dinocysts in the middle-upper Miocene interval is rather patchy, probably due to prolonged exposure to oxygen. An important general aspect in the dinocyst assemblages is the near absence of Antarctic endemic species and the apparent influence of relatively warm waters throughout the succession at Site 1168. General palynomorph distribution indicates continued deepening from an initial shallow, even restricted, marine setting from late Eocene-Quaternary times. A curious massive influx of small skolochorate acritarchs is recorded throughout the late early-early middle Miocene; the significance of this signal is not yet understood. A general long-term oligotrophic nature of the surface waters influencing Site 1168 is suggested from the low abundance of (proto) peridinioid, presumably heterotrophic, species. The overall dinocyst distribution pattern corresponds to the long-term existence of a Leeuwin-like current influencing the region, including Site 1168, confirming results of earlier studies on other microfossil groups. The occasional influence of colder surface water conditions is, however, also apparent, notably during the late ... |
format |
Dataset |
author |
Brinkhuis, Henk Munsterman, Dirk K Sengers, S Sluijs, Appy Warnaar, Jeroen Williams, Graham L |
author_facet |
Brinkhuis, Henk Munsterman, Dirk K Sengers, S Sluijs, Appy Warnaar, Jeroen Williams, Graham L |
author_sort |
Brinkhuis, Henk |
title |
Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
title_short |
Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
title_full |
Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
title_fullStr |
Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
title_full_unstemmed |
Dinoflagellate cysts abundance and events of ODP Hole 189-1168A sediments |
title_sort |
dinoflagellate cysts abundance and events of odp hole 189-1168a sediments |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.779871 https://doi.org/10.1594/PANGAEA.779871 |
op_coverage |
LATITUDE: -42.609680 * LONGITUDE: 144.412700 * DATE/TIME START: 2000-02-29T17:30:00 * DATE/TIME END: 2000-03-24T22:15:00 |
long_lat |
ENVELOPE(144.412700,144.412700,-42.609680,-42.609680) |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Brinkhuis, Henk; Munsterman, Dirk K; Sengers, S; Sluijs, Appy; Warnaar, Jeroen; Williams, Graham L (2003): Late Eocene-Quaternary dinoflagellate cysts from ODP Site 1168, off western Tasmania. In: Exon, NF; Kennett, JP; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 189, 1-36, https://doi.org/10.2973/odp.proc.sr.189.105.2003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.779871 https://doi.org/10.1594/PANGAEA.779871 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.779871 https://doi.org/10.2973/odp.proc.sr.189.105.2003 |
_version_ |
1766164213173059584 |