Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages
The Integrated Ocean Drilling Program (IODP) Arctic Coring Expedition (ACEX) Hole 4C from the Lomonosov Ridge in the central Arctic Ocean recovered a continuous 18 m record of Quaternary foraminifera yielding evidence for seasonally ice-free interglacials during the Matuyama, progressive development...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2008
|
Subjects: | |
Online Access: | https://orca.cardiff.ac.uk/id/eprint/7532/ https://orca.cardiff.ac.uk/id/eprint/7532/1/Cronin%202008.pdf https://doi.org/10.1029/2007PA001484 |
id |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:7532 |
---|---|
record_format |
openpolar |
spelling |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:7532 2023-05-15T14:23:02+02:00 Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages Cronin, TM Smith, S.A. Eynaud, F. O'Regan, Matthew King, J. 2008-03-22 application/pdf https://orca.cardiff.ac.uk/id/eprint/7532/ https://orca.cardiff.ac.uk/id/eprint/7532/1/Cronin%202008.pdf https://doi.org/10.1029/2007PA001484 en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/7532/1/Cronin%202008.pdf Cronin, TM, Smith, S.A., Eynaud, F., O'Regan, Matthew and King, J. 2008. Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages. Paleoceanography 23 (1) , PA1S18. 10.1029/2007PA001484 https://doi.org/10.1029/2007PA001484 file https://orca.cardiff.ac.uk/7532/1/Cronin%202008.pdf doi:10.1029/2007PA001484 QE Geology Article PeerReviewed 2008 ftunivcardiff https://doi.org/10.1029/2007PA001484 2022-09-25T20:16:07Z The Integrated Ocean Drilling Program (IODP) Arctic Coring Expedition (ACEX) Hole 4C from the Lomonosov Ridge in the central Arctic Ocean recovered a continuous 18 m record of Quaternary foraminifera yielding evidence for seasonally ice-free interglacials during the Matuyama, progressive development of large glacials during the mid-Pleistocene transition (MPT) �1.2–0.9 Ma, and the onset of high-amplitude 100-ka orbital cycles �500 ka. Foraminiferal preservation in sediments from the Arctic is influenced by primary (sea ice, organic input, and other environmental conditions) and secondary factors (syndepositional, long-term pore water dissolution). Taking these into account, the ACEX 4C record shows distinct maxima in agglutinated foraminiferal abundance corresponding to several interglacials and deglacials between marine isotope stages (MIS) 13–37, and although less precise dating is available for older sediments, these trends appear to continue through the Matuyama. The MPT is characterized by nearly barren intervals during major glacials (MIS 12, 16, and 22–24) and faunal turnover (MIS 12–24). Abundant calcareous planktonic (mainly Neogloboquadrina pachyderma sin.) and benthic foraminifers occur mainly in interglacial intervals during the Brunhes and very rarely in the Matuyama. A distinct faunal transition from calcareous to agglutinated foraminifers 200–300 ka in ACEX 4C is comparable to that found in Arctic sediments from the Lomonosov, Alpha, and Northwind ridges and the Morris Jesup Rise. Down-core disappearance of calcareous taxa is probably related to either reduced sea ice cover prior to the last few 100-ka cycles, pore water dissolution, or both. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Foraminifera* Lomonosov Ridge Neogloboquadrina pachyderma Sea ice Cardiff University: ORCA (Online Research @ Cardiff) Arctic Arctic Ocean Morris Jesup Rise ENVELOPE(-20.000,-20.000,83.750,83.750) Paleoceanography 23 1 n/a n/a |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
QE Geology |
spellingShingle |
QE Geology Cronin, TM Smith, S.A. Eynaud, F. O'Regan, Matthew King, J. Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
topic_facet |
QE Geology |
description |
The Integrated Ocean Drilling Program (IODP) Arctic Coring Expedition (ACEX) Hole 4C from the Lomonosov Ridge in the central Arctic Ocean recovered a continuous 18 m record of Quaternary foraminifera yielding evidence for seasonally ice-free interglacials during the Matuyama, progressive development of large glacials during the mid-Pleistocene transition (MPT) �1.2–0.9 Ma, and the onset of high-amplitude 100-ka orbital cycles �500 ka. Foraminiferal preservation in sediments from the Arctic is influenced by primary (sea ice, organic input, and other environmental conditions) and secondary factors (syndepositional, long-term pore water dissolution). Taking these into account, the ACEX 4C record shows distinct maxima in agglutinated foraminiferal abundance corresponding to several interglacials and deglacials between marine isotope stages (MIS) 13–37, and although less precise dating is available for older sediments, these trends appear to continue through the Matuyama. The MPT is characterized by nearly barren intervals during major glacials (MIS 12, 16, and 22–24) and faunal turnover (MIS 12–24). Abundant calcareous planktonic (mainly Neogloboquadrina pachyderma sin.) and benthic foraminifers occur mainly in interglacial intervals during the Brunhes and very rarely in the Matuyama. A distinct faunal transition from calcareous to agglutinated foraminifers 200–300 ka in ACEX 4C is comparable to that found in Arctic sediments from the Lomonosov, Alpha, and Northwind ridges and the Morris Jesup Rise. Down-core disappearance of calcareous taxa is probably related to either reduced sea ice cover prior to the last few 100-ka cycles, pore water dissolution, or both. |
format |
Article in Journal/Newspaper |
author |
Cronin, TM Smith, S.A. Eynaud, F. O'Regan, Matthew King, J. |
author_facet |
Cronin, TM Smith, S.A. Eynaud, F. O'Regan, Matthew King, J. |
author_sort |
Cronin, TM |
title |
Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
title_short |
Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
title_full |
Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
title_fullStr |
Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
title_full_unstemmed |
Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages |
title_sort |
quaternary paleoceanography of the central arctic based on integrated ocean drilling program arctic coring expedition 302 foraminiferal assemblages |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://orca.cardiff.ac.uk/id/eprint/7532/ https://orca.cardiff.ac.uk/id/eprint/7532/1/Cronin%202008.pdf https://doi.org/10.1029/2007PA001484 |
long_lat |
ENVELOPE(-20.000,-20.000,83.750,83.750) |
geographic |
Arctic Arctic Ocean Morris Jesup Rise |
geographic_facet |
Arctic Arctic Ocean Morris Jesup Rise |
genre |
Arctic Arctic Arctic Ocean Foraminifera* Lomonosov Ridge Neogloboquadrina pachyderma Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Foraminifera* Lomonosov Ridge Neogloboquadrina pachyderma Sea ice |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/7532/1/Cronin%202008.pdf Cronin, TM, Smith, S.A., Eynaud, F., O'Regan, Matthew and King, J. 2008. Quaternary paleoceanography of the central arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages. Paleoceanography 23 (1) , PA1S18. 10.1029/2007PA001484 https://doi.org/10.1029/2007PA001484 file https://orca.cardiff.ac.uk/7532/1/Cronin%202008.pdf doi:10.1029/2007PA001484 |
op_doi |
https://doi.org/10.1029/2007PA001484 |
container_title |
Paleoceanography |
container_volume |
23 |
container_issue |
1 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766295519609487360 |