Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1)
Benthic foraminifers were examined from the Paleogene of Ocean Drilling Program (ODP) Site 647 and Deep Sea Drilling Program (DSDP) Site 112 in the southern Labrador Sea. The Paleogene sequence of the deep Labrador Sea can be subdivided into seven assemblages, based on the ranges and relative abunda...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.745254 2024-09-15T18:17:15+00:00 Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) Kaminski, Michael Anthony Gradstein, Felix M Berggren, William A LATITUDE: 53.331300 * LONGITUDE: -45.262000 * DATE/TIME START: 1985-10-15T00:00:00 * DATE/TIME END: 1985-10-25T00:00:00 * MINIMUM DEPTH, sediment/rock: 155.9 m * MAXIMUM DEPTH, sediment/rock: 657.5 m 1989 text/tab-separated-values, 101 data points https://doi.pangaea.de/10.1594/PANGAEA.745254 https://doi.org/10.1594/PANGAEA.745254 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.745254 https://doi.org/10.1594/PANGAEA.745254 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Kaminski, Michael Anthony; Gradstein, Felix M; Berggren, William A (1989): Paleogene benthic foraminifer biostratigraphy and paleoecology at Site 647, southern Labrador Sea. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 705-730, https://doi.org/10.2973/odp.proc.sr.105.124.1989 105-647 Age maximum/old minimum/young Age model Ageprofile Datum Description COMPCORE Composite Core DEPTH sediment/rock Joides Resolution Leg105 North Atlantic Ocean Ocean Drilling Program ODP dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.74525410.2973/odp.proc.sr.105.124.1989 2024-08-21T00:02:26Z Benthic foraminifers were examined from the Paleogene of Ocean Drilling Program (ODP) Site 647 and Deep Sea Drilling Program (DSDP) Site 112 in the southern Labrador Sea. The Paleogene sequence of the deep Labrador Sea can be subdivided into seven assemblages, based on the ranges and relative abundance of characteristic taxa. The first occurrences (FOs) and last occurrences (LOs) of important benthic taxa are calibrated to a standard biochronology, by interpolating from our age model for Site 647. The biostratigraphy of Site 647 is used to improve the age estimates of Site112 cores. Fifteen microfossil events in Site 647 also are found in the sedimentary wedge along the Labrador Margin. A comparison of the probabilistic microfossil sequence from the Labrador Margin with that at Site 647 yields four isochronous benthic foraminifer LOs. Two new species are described from Sites 647 and 112: Hyperammina kenmilleri, Kaminski n.sp., and Ammodiscus nagyi Kaminski n.sp. Significant faunal turnovers are observed at the Ypresian/Lutetian and Eocene/Oligocene boundaries. The Ypresian/Lutetian boundary is characterized by a Glomospira-facies and is attributed to a rise in the CCD (carbonate compensation depth) associated with the NP14 lowstand in sea level. The Eocene/Oligocene boundary is delimited by the LO of Spiroplectammina spectabilis and Reticulophragmium amplectens. The change from an Eocene agglutinated assemblageto a predominantly calcareous assemblage in the early Oligocene took place gradually, over a period of about 4 Ma, but the rate of change accelerated near the boundary. This faunal turnover is attributed to changes in the preservationof agglutinated foraminifers, as delicate species disappeared first. Increasingly poorer preservation of agglutinated foraminifers in the late Eocene to earliest Oligocene reflects the first appearance of cool, nutrient-poor deep water in the southern Labrador Sea. The approximately coeval disappearance of agglutinated assemblages along the Labrador Margin was caused by a ... Dataset Labrador Sea North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-45.262000,-45.262000,53.331300,53.331300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
105-647 Age maximum/old minimum/young Age model Ageprofile Datum Description COMPCORE Composite Core DEPTH sediment/rock Joides Resolution Leg105 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
105-647 Age maximum/old minimum/young Age model Ageprofile Datum Description COMPCORE Composite Core DEPTH sediment/rock Joides Resolution Leg105 North Atlantic Ocean Ocean Drilling Program ODP Kaminski, Michael Anthony Gradstein, Felix M Berggren, William A Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
topic_facet |
105-647 Age maximum/old minimum/young Age model Ageprofile Datum Description COMPCORE Composite Core DEPTH sediment/rock Joides Resolution Leg105 North Atlantic Ocean Ocean Drilling Program ODP |
description |
Benthic foraminifers were examined from the Paleogene of Ocean Drilling Program (ODP) Site 647 and Deep Sea Drilling Program (DSDP) Site 112 in the southern Labrador Sea. The Paleogene sequence of the deep Labrador Sea can be subdivided into seven assemblages, based on the ranges and relative abundance of characteristic taxa. The first occurrences (FOs) and last occurrences (LOs) of important benthic taxa are calibrated to a standard biochronology, by interpolating from our age model for Site 647. The biostratigraphy of Site 647 is used to improve the age estimates of Site112 cores. Fifteen microfossil events in Site 647 also are found in the sedimentary wedge along the Labrador Margin. A comparison of the probabilistic microfossil sequence from the Labrador Margin with that at Site 647 yields four isochronous benthic foraminifer LOs. Two new species are described from Sites 647 and 112: Hyperammina kenmilleri, Kaminski n.sp., and Ammodiscus nagyi Kaminski n.sp. Significant faunal turnovers are observed at the Ypresian/Lutetian and Eocene/Oligocene boundaries. The Ypresian/Lutetian boundary is characterized by a Glomospira-facies and is attributed to a rise in the CCD (carbonate compensation depth) associated with the NP14 lowstand in sea level. The Eocene/Oligocene boundary is delimited by the LO of Spiroplectammina spectabilis and Reticulophragmium amplectens. The change from an Eocene agglutinated assemblageto a predominantly calcareous assemblage in the early Oligocene took place gradually, over a period of about 4 Ma, but the rate of change accelerated near the boundary. This faunal turnover is attributed to changes in the preservationof agglutinated foraminifers, as delicate species disappeared first. Increasingly poorer preservation of agglutinated foraminifers in the late Eocene to earliest Oligocene reflects the first appearance of cool, nutrient-poor deep water in the southern Labrador Sea. The approximately coeval disappearance of agglutinated assemblages along the Labrador Margin was caused by a ... |
format |
Dataset |
author |
Kaminski, Michael Anthony Gradstein, Felix M Berggren, William A |
author_facet |
Kaminski, Michael Anthony Gradstein, Felix M Berggren, William A |
author_sort |
Kaminski, Michael Anthony |
title |
Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
title_short |
Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
title_full |
Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
title_fullStr |
Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
title_full_unstemmed |
Estimated chronologic ages of benthic microfossil events in ODP Site 105-647 (Table 1) |
title_sort |
estimated chronologic ages of benthic microfossil events in odp site 105-647 (table 1) |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.745254 https://doi.org/10.1594/PANGAEA.745254 |
op_coverage |
LATITUDE: 53.331300 * LONGITUDE: -45.262000 * DATE/TIME START: 1985-10-15T00:00:00 * DATE/TIME END: 1985-10-25T00:00:00 * MINIMUM DEPTH, sediment/rock: 155.9 m * MAXIMUM DEPTH, sediment/rock: 657.5 m |
long_lat |
ENVELOPE(-45.262000,-45.262000,53.331300,53.331300) |
genre |
Labrador Sea North Atlantic |
genre_facet |
Labrador Sea North Atlantic |
op_source |
Supplement to: Kaminski, Michael Anthony; Gradstein, Felix M; Berggren, William A (1989): Paleogene benthic foraminifer biostratigraphy and paleoecology at Site 647, southern Labrador Sea. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 705-730, https://doi.org/10.2973/odp.proc.sr.105.124.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.745254 https://doi.org/10.1594/PANGAEA.745254 |
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.74525410.2973/odp.proc.sr.105.124.1989 |
_version_ |
1810455255211573248 |