Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments
Twenty-three core catcher samples from Site 1166 (Hole 1166A) in Prydz Bay were analyzed for their palynomorph content, with the aims of determining the ages of the sequence penetrated, providing information on the vegetation of the Antarctic continent at this time, and determining the environments...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.780409 2023-05-15T13:42:10+02:00 Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments Mcphail, Michael K Truswell, Elizabeth M LATITUDE: -67.696283 * LONGITUDE: 74.787333 * DATE/TIME START: 2000-02-16T00:00:00 * DATE/TIME END: 2000-02-22T00:00:00 2004-05-03 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.780409 https://doi.org/10.1594/PANGAEA.780409 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.780409 https://doi.org/10.1594/PANGAEA.780409 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Mcphail, Michael K; Truswell, Elizabeth M (2004): Palynology of Site 1166, Prydz Bay, East Antarctica. In: Cooper, AK; O'Brien, PE; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 188, 1-43, https://doi.org/10.2973/odp.proc.sr.188.013.2004 188-1166 COMPCORE Composite Core Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.780409 https://doi.org/10.2973/odp.proc.sr.188.013.2004 2023-01-20T07:32:32Z Twenty-three core catcher samples from Site 1166 (Hole 1166A) in Prydz Bay were analyzed for their palynomorph content, with the aims of determining the ages of the sequence penetrated, providing information on the vegetation of the Antarctic continent at this time, and determining the environments under which deposition occurred. Dinocysts, pollen and spores, and foraminiferal test linings were recovered from most samples in the interval from 142.5 to 362.03 meters below seafloor (mbsf). The interval from 142.5 to 258.72 mbsf yielded palynomorphs indicative of a middle-late Eocene age, equivalent to the lower-middle Nothofagidites asperus Zone of the Gippsland Basin of southeastern Australia. The Prydz Bay sequence represents the first well-dated section of this age from East Antarctica. Dinocysts belonging to the widespread "Transantarctic Flora" give a more confident late Eocene age for the interval 142.5-220.5 mbsf. The uppermost two cores within this interval, namely, those from 142.5 and 148.36 mbsf, show significantly higher frequencies of dinocysts than the cores below and suggest that an open marine environment prevailed at the time of deposition. The spore and pollen component may reflect a vegetation akin to the modern rainforest scrubs of Tasmania and New Zealand. Below 267 mbsf, sparse microfloras, mainly of spores and pollen, are equated with the Phyllocladidites mawsonii Zone of southeastern Australia, which is of Turonian to possibly Santonian age. Fluvial to marginal marine environments of deposition are suggested. The parent vegetation from this interval is here described as "Austral Conifer Woodland." The same Late Cretaceous microflora occurs in two of the cores above the postulated unconformity at 267 mbsf. In the core at 249.42 mbsf, the Late Cretaceous spores and pollen are uncontaminated by any Tertiary forms, suggesting that a clast of this older material has been sampled; such a clast may reflect transport by ice during the Eocene. At 258.72 mbsf, Late Cretaceous spores and pollen ... Dataset Antarc* Antarctic Antarctica East Antarctica Prydz Bay PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic East Antarctica Austral Prydz Bay New Zealand ENVELOPE(74.787333,74.787333,-67.696283,-67.696283) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
188-1166 COMPCORE Composite Core Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay |
spellingShingle |
188-1166 COMPCORE Composite Core Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay Mcphail, Michael K Truswell, Elizabeth M Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
topic_facet |
188-1166 COMPCORE Composite Core Joides Resolution Leg188 Ocean Drilling Program ODP Prydz Bay |
description |
Twenty-three core catcher samples from Site 1166 (Hole 1166A) in Prydz Bay were analyzed for their palynomorph content, with the aims of determining the ages of the sequence penetrated, providing information on the vegetation of the Antarctic continent at this time, and determining the environments under which deposition occurred. Dinocysts, pollen and spores, and foraminiferal test linings were recovered from most samples in the interval from 142.5 to 362.03 meters below seafloor (mbsf). The interval from 142.5 to 258.72 mbsf yielded palynomorphs indicative of a middle-late Eocene age, equivalent to the lower-middle Nothofagidites asperus Zone of the Gippsland Basin of southeastern Australia. The Prydz Bay sequence represents the first well-dated section of this age from East Antarctica. Dinocysts belonging to the widespread "Transantarctic Flora" give a more confident late Eocene age for the interval 142.5-220.5 mbsf. The uppermost two cores within this interval, namely, those from 142.5 and 148.36 mbsf, show significantly higher frequencies of dinocysts than the cores below and suggest that an open marine environment prevailed at the time of deposition. The spore and pollen component may reflect a vegetation akin to the modern rainforest scrubs of Tasmania and New Zealand. Below 267 mbsf, sparse microfloras, mainly of spores and pollen, are equated with the Phyllocladidites mawsonii Zone of southeastern Australia, which is of Turonian to possibly Santonian age. Fluvial to marginal marine environments of deposition are suggested. The parent vegetation from this interval is here described as "Austral Conifer Woodland." The same Late Cretaceous microflora occurs in two of the cores above the postulated unconformity at 267 mbsf. In the core at 249.42 mbsf, the Late Cretaceous spores and pollen are uncontaminated by any Tertiary forms, suggesting that a clast of this older material has been sampled; such a clast may reflect transport by ice during the Eocene. At 258.72 mbsf, Late Cretaceous spores and pollen ... |
format |
Dataset |
author |
Mcphail, Michael K Truswell, Elizabeth M |
author_facet |
Mcphail, Michael K Truswell, Elizabeth M |
author_sort |
Mcphail, Michael K |
title |
Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
title_short |
Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
title_full |
Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
title_fullStr |
Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
title_full_unstemmed |
Palynology, source vegetation, environment and age of ODP Site 188-1166 sediments |
title_sort |
palynology, source vegetation, environment and age of odp site 188-1166 sediments |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.780409 https://doi.org/10.1594/PANGAEA.780409 |
op_coverage |
LATITUDE: -67.696283 * LONGITUDE: 74.787333 * DATE/TIME START: 2000-02-16T00:00:00 * DATE/TIME END: 2000-02-22T00:00:00 |
long_lat |
ENVELOPE(74.787333,74.787333,-67.696283,-67.696283) |
geographic |
Antarctic The Antarctic East Antarctica Austral Prydz Bay New Zealand |
geographic_facet |
Antarctic The Antarctic East Antarctica Austral Prydz Bay New Zealand |
genre |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay |
op_source |
Supplement to: Mcphail, Michael K; Truswell, Elizabeth M (2004): Palynology of Site 1166, Prydz Bay, East Antarctica. In: Cooper, AK; O'Brien, PE; Richter, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 188, 1-43, https://doi.org/10.2973/odp.proc.sr.188.013.2004 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.780409 https://doi.org/10.1594/PANGAEA.780409 |
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.780409 https://doi.org/10.2973/odp.proc.sr.188.013.2004 |
_version_ |
1766164233846784000 |