(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C
Planktonic foraminifera populations were studied throughout the top 25 meters of the IODP ACEX 302 Hole 4C from the central Arctic Ocean at a resolution varying from 5cm (at the top of the record) to 10cm. Planktonic foraminifera occur in high absolute abundances only in the uppermost fifty centimet...
Main Authors: | , , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2009
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.672078 https://doi.org/10.1594/PANGAEA.672078 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.672078 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.672078 2023-05-15T14:27:17+02:00 (Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C Eynaud, Frédérique Cronin, Thomas M Smith, Shannon A Zaragosi, Sebastien Mavel, J Mary, Yannick Mas, Virginie Pujol, Claude LATITUDE: 87.867750 * LONGITUDE: 136.189680 * DATE/TIME START: 2004-09-03T00:00:00 * DATE/TIME END: 2004-09-03T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 3.50 m 2009-08-10 text/tab-separated-values, 943 data points https://doi.pangaea.de/10.1594/PANGAEA.672078 https://doi.org/10.1594/PANGAEA.672078 en eng PANGAEA Late Pleistocene planktonic foraminifera of Hole 302-M0004C (Addendum 2) (URI: hdl:10013/epic.32918.d001) https://doi.pangaea.de/10.1594/PANGAEA.672078 https://doi.org/10.1594/PANGAEA.672078 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Eynaud, Frédérique; Cronin, Thomas M; Smith, Shannon A; Zaragosi, Sebastien; Mavel, J; Mary, Yannick; Mas, Virginie; Pujol, Claude (2009): Morphological variability of the planktonic foraminifer Neogloboquadrina pachyderma from ACEX cores: implications for late Pleistocene circulation in the Arctic Ocean. Micropaleontology, 55(2-3), 101-116 302-M0004C ACEX-M4C Arctic Coring Expedition ACEX Arctic Ocean Biogenic indeterminata Counting >125 µm fraction Depth composite top sediment/rock Exp302 Foraminifera planktic Globigerina bulloides Globigerina quinqueloba Integrated Ocean Drilling Program / International Ocean Discovery Program Intercore correlation IODP Neogloboquadrina atlantica Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Number Sample code/label Sample type split Vidar Viking Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.672078 2023-01-20T08:42:41Z Planktonic foraminifera populations were studied throughout the top 25 meters of the IODP ACEX 302 Hole 4C from the central Arctic Ocean at a resolution varying from 5cm (at the top of the record) to 10cm. Planktonic foraminifera occur in high absolute abundances only in the uppermost fifty centimetres and are dominated by the taxa Neogloboquadrina pachyderma. Except for a few intermittent layers below this level,most samples are barren of calcareous microfossils.Within the topmost sediments, Neogloboquadrina pachyderma specimens present large morphological variability in the shape and number of chambers in the finalwhorl, chamber sphericity, size, and coiling direction. Five morphotypeswere identified among the sinistral (sin.) population (Nps-1 to Nps-5), including a small form (Nps-5) that is similar to a non-encrusted normal form also previously identified in the modern Arctic Ocean watermasses. Twenty five percent of the sinistral population is made up by large specimens (Nps-2, 3, 4), with a maximal mean diameter larger than 250µm. Following observations made in peri-Arctic seas (Hillaire-Marcel et al. 2004, doi:10.1016/j.quascirev.2003.08.006), we propose that occurrence of these large-sized specimens of N. pachyderma (sin.) in the central Arctic Ocean sediments could sign North Atlantic water sub-surface penetration. Dataset Arctic Arctic Arctic Ocean Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean ENVELOPE(136.189680,136.189680,87.867750,87.867750) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-M0004C ACEX-M4C Arctic Coring Expedition ACEX Arctic Ocean Biogenic indeterminata Counting >125 µm fraction Depth composite top sediment/rock Exp302 Foraminifera planktic Globigerina bulloides Globigerina quinqueloba Integrated Ocean Drilling Program / International Ocean Discovery Program Intercore correlation IODP Neogloboquadrina atlantica Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Number Sample code/label Sample type split Vidar Viking |
spellingShingle |
302-M0004C ACEX-M4C Arctic Coring Expedition ACEX Arctic Ocean Biogenic indeterminata Counting >125 µm fraction Depth composite top sediment/rock Exp302 Foraminifera planktic Globigerina bulloides Globigerina quinqueloba Integrated Ocean Drilling Program / International Ocean Discovery Program Intercore correlation IODP Neogloboquadrina atlantica Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Number Sample code/label Sample type split Vidar Viking Eynaud, Frédérique Cronin, Thomas M Smith, Shannon A Zaragosi, Sebastien Mavel, J Mary, Yannick Mas, Virginie Pujol, Claude (Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
topic_facet |
302-M0004C ACEX-M4C Arctic Coring Expedition ACEX Arctic Ocean Biogenic indeterminata Counting >125 µm fraction Depth composite top sediment/rock Exp302 Foraminifera planktic Globigerina bulloides Globigerina quinqueloba Integrated Ocean Drilling Program / International Ocean Discovery Program Intercore correlation IODP Neogloboquadrina atlantica Neogloboquadrina pachyderma dextral Neogloboquadrina pachyderma sinistral Number Sample code/label Sample type split Vidar Viking |
description |
Planktonic foraminifera populations were studied throughout the top 25 meters of the IODP ACEX 302 Hole 4C from the central Arctic Ocean at a resolution varying from 5cm (at the top of the record) to 10cm. Planktonic foraminifera occur in high absolute abundances only in the uppermost fifty centimetres and are dominated by the taxa Neogloboquadrina pachyderma. Except for a few intermittent layers below this level,most samples are barren of calcareous microfossils.Within the topmost sediments, Neogloboquadrina pachyderma specimens present large morphological variability in the shape and number of chambers in the finalwhorl, chamber sphericity, size, and coiling direction. Five morphotypeswere identified among the sinistral (sin.) population (Nps-1 to Nps-5), including a small form (Nps-5) that is similar to a non-encrusted normal form also previously identified in the modern Arctic Ocean watermasses. Twenty five percent of the sinistral population is made up by large specimens (Nps-2, 3, 4), with a maximal mean diameter larger than 250µm. Following observations made in peri-Arctic seas (Hillaire-Marcel et al. 2004, doi:10.1016/j.quascirev.2003.08.006), we propose that occurrence of these large-sized specimens of N. pachyderma (sin.) in the central Arctic Ocean sediments could sign North Atlantic water sub-surface penetration. |
format |
Dataset |
author |
Eynaud, Frédérique Cronin, Thomas M Smith, Shannon A Zaragosi, Sebastien Mavel, J Mary, Yannick Mas, Virginie Pujol, Claude |
author_facet |
Eynaud, Frédérique Cronin, Thomas M Smith, Shannon A Zaragosi, Sebastien Mavel, J Mary, Yannick Mas, Virginie Pujol, Claude |
author_sort |
Eynaud, Frédérique |
title |
(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
title_short |
(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
title_full |
(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
title_fullStr |
(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
title_full_unstemmed |
(Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C |
title_sort |
(table 1) late pleistocene planktonic foraminifera of hole 302-m0004c |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.672078 https://doi.org/10.1594/PANGAEA.672078 |
op_coverage |
LATITUDE: 87.867750 * LONGITUDE: 136.189680 * DATE/TIME START: 2004-09-03T00:00:00 * DATE/TIME END: 2004-09-03T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 3.50 m |
long_lat |
ENVELOPE(136.189680,136.189680,87.867750,87.867750) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
genre_facet |
Arctic Arctic Arctic Ocean Foraminifera* Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
op_source |
Supplement to: Eynaud, Frédérique; Cronin, Thomas M; Smith, Shannon A; Zaragosi, Sebastien; Mavel, J; Mary, Yannick; Mas, Virginie; Pujol, Claude (2009): Morphological variability of the planktonic foraminifer Neogloboquadrina pachyderma from ACEX cores: implications for late Pleistocene circulation in the Arctic Ocean. Micropaleontology, 55(2-3), 101-116 |
op_relation |
Late Pleistocene planktonic foraminifera of Hole 302-M0004C (Addendum 2) (URI: hdl:10013/epic.32918.d001) https://doi.pangaea.de/10.1594/PANGAEA.672078 https://doi.org/10.1594/PANGAEA.672078 |
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.672078 |
_version_ |
1766300948103168000 |