Age determination of Paleogene sediments from the Prysz Bay

Age dating of Paleogene diamictites from ODP Site 739 in Prydz Bay with marine microfossils (diatoms and calcareous nannofossils) suggests the build-up of a major East Antarctic ice shield in latest Eocene to earliest Oligocene time, about 35-38 m.y. ago. Strontium isotopic analyses of small mollusk...

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Bibliographic Details
Main Authors: Thierstein, Hans R, MacDougall, J Douglas, Martin, Ellen E, Larsen, Birger, Barron, John A, Baldauf, Jack G
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1991
Subjects:
119-739
119-739C
119-743A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg119
Ocean Drilling Program
ODP
Prydz Bay
Antarc*
Antarctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.758206
https://doi.org/10.1594/PANGAEA.758206
id ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758206
record_format openpolar
spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758206 2024-09-15T17:43:29+00:00 Age determination of Paleogene sediments from the Prysz Bay Thierstein, Hans R MacDougall, J Douglas Martin, Ellen E Larsen, Birger Barron, John A Baldauf, Jack G MEDIAN LATITUDE: -67.162000 * MEDIAN LONGITUDE: 74.951367 * SOUTH-BOUND LATITUDE: -67.285000 * WEST-BOUND LONGITUDE: 74.690500 * NORTH-BOUND LATITUDE: -66.916000 * EAST-BOUND LONGITUDE: 75.081800 * DATE/TIME START: 1988-01-18T00:00:00 * DATE/TIME END: 1988-02-03T20:00:00 1991 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.758206 https://doi.org/10.1594/PANGAEA.758206 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.758206 https://doi.org/10.1594/PANGAEA.758206 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Thierstein, Hans R; MacDougall, J Douglas; Martin, Ellen E; Larsen, Birger; Barron, John A; Baldauf, Jack G (1991): Age determinations of Paleogene Diamictites from Prydz Bay (Site 739), Antarctica, using sr isotopes of mollusks and biostratigraphy of microfossils (diatoms and coccoliths). In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 739-745, https://doi.org/10.2973/odp.proc.sr.119.178.1991 119-739 119-739C 119-743A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.75820610.2973/odp.proc.sr.119.178.1991 2024-07-24T02:31:20Z Age dating of Paleogene diamictites from ODP Site 739 in Prydz Bay with marine microfossils (diatoms and calcareous nannofossils) suggests the build-up of a major East Antarctic ice shield in latest Eocene to earliest Oligocene time, about 35-38 m.y. ago. Strontium isotopic analyses of small mollusk remains found within these diamictites, however, yield younger ages ranging from 29 to 23 Ma (i.e., latest early Oligocene to earliest Miocene). These age discrepancies could be caused by repeated glacial reworking of microfossils, macrofossils, and sediment clasts through the late Oligocene or, alternatively, by ion exchange in the still aragonitic mollusk shells. Other/Unknown Material Antarc* Antarctic Prydz Bay PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(74.690500,75.081800,-66.916000,-67.285000)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic 119-739
119-739C
119-743A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg119
Ocean Drilling Program
ODP
Prydz Bay
spellingShingle 119-739
119-739C
119-743A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg119
Ocean Drilling Program
ODP
Prydz Bay
Thierstein, Hans R
MacDougall, J Douglas
Martin, Ellen E
Larsen, Birger
Barron, John A
Baldauf, Jack G
Age determination of Paleogene sediments from the Prysz Bay
topic_facet 119-739
119-739C
119-743A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg119
Ocean Drilling Program
ODP
Prydz Bay
description Age dating of Paleogene diamictites from ODP Site 739 in Prydz Bay with marine microfossils (diatoms and calcareous nannofossils) suggests the build-up of a major East Antarctic ice shield in latest Eocene to earliest Oligocene time, about 35-38 m.y. ago. Strontium isotopic analyses of small mollusk remains found within these diamictites, however, yield younger ages ranging from 29 to 23 Ma (i.e., latest early Oligocene to earliest Miocene). These age discrepancies could be caused by repeated glacial reworking of microfossils, macrofossils, and sediment clasts through the late Oligocene or, alternatively, by ion exchange in the still aragonitic mollusk shells.
format Other/Unknown Material
author Thierstein, Hans R
MacDougall, J Douglas
Martin, Ellen E
Larsen, Birger
Barron, John A
Baldauf, Jack G
author_facet Thierstein, Hans R
MacDougall, J Douglas
Martin, Ellen E
Larsen, Birger
Barron, John A
Baldauf, Jack G
author_sort Thierstein, Hans R
title Age determination of Paleogene sediments from the Prysz Bay
title_short Age determination of Paleogene sediments from the Prysz Bay
title_full Age determination of Paleogene sediments from the Prysz Bay
title_fullStr Age determination of Paleogene sediments from the Prysz Bay
title_full_unstemmed Age determination of Paleogene sediments from the Prysz Bay
title_sort age determination of paleogene sediments from the prysz bay
publisher PANGAEA
publishDate 1991
url https://doi.pangaea.de/10.1594/PANGAEA.758206
https://doi.org/10.1594/PANGAEA.758206
op_coverage MEDIAN LATITUDE: -67.162000 * MEDIAN LONGITUDE: 74.951367 * SOUTH-BOUND LATITUDE: -67.285000 * WEST-BOUND LONGITUDE: 74.690500 * NORTH-BOUND LATITUDE: -66.916000 * EAST-BOUND LONGITUDE: 75.081800 * DATE/TIME START: 1988-01-18T00:00:00 * DATE/TIME END: 1988-02-03T20:00:00
long_lat ENVELOPE(74.690500,75.081800,-66.916000,-67.285000)
genre Antarc*
Antarctic
Prydz Bay
genre_facet Antarc*
Antarctic
Prydz Bay
op_source Supplement to: Thierstein, Hans R; MacDougall, J Douglas; Martin, Ellen E; Larsen, Birger; Barron, John A; Baldauf, Jack G (1991): Age determinations of Paleogene Diamictites from Prydz Bay (Site 739), Antarctica, using sr isotopes of mollusks and biostratigraphy of microfossils (diatoms and coccoliths). In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 739-745, https://doi.org/10.2973/odp.proc.sr.119.178.1991
op_relation https://doi.pangaea.de/10.1594/PANGAEA.758206
https://doi.org/10.1594/PANGAEA.758206
op_rights CC-BY-3.0: Creative Commons Attribution 3.0 Unported
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.1594/PANGAEA.75820610.2973/odp.proc.sr.119.178.1991
_version_ 1810490471808499712

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