Mass accumulation rates of IODP Hole 320-U1333C
Understanding changes in export production through time provides insight into the response of the biological pump to global climate change, particularly during periods of rapid climate change. In this study we consider what role changes in export production may have had on carbon sequestration and h...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.824104 2023-05-15T13:49:51+02:00 Mass accumulation rates of IODP Hole 320-U1333C Erhardt, Andrea M Pälike, Heiko Paytan, Adina LATITUDE: 10.516596 * LONGITUDE: -138.419090 * MINIMUM DEPTH, sediment/rock: 113.23 m * MAXIMUM DEPTH, sediment/rock: 166.35 m 2013-12-11 text/tab-separated-values, 3038 data points https://doi.pangaea.de/10.1594/PANGAEA.824104 https://doi.org/10.1594/PANGAEA.824104 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.824104 https://doi.org/10.1594/PANGAEA.824104 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Erhardt, Andrea M; Pälike, Heiko; Paytan, Adina (2013): High-resolution record of export production in the eastern equatorial Pacific across the Eocene-Oligocene transition and relationships to global climatic records. Paleoceanography, 28(1), 130-142, https://doi.org/10.1029/2012PA002347 320-U1333C Accumulation rate barite mass AGE reference Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Exp320 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Pacific Equatorial Age Transect I Sample code/label Sample mass Sedimentation rate Dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.824104 https://doi.org/10.1029/2012PA002347 2023-01-20T09:02:02Z Understanding changes in export production through time provides insight into the response of the biological pump to global climate change, particularly during periods of rapid climate change. In this study we consider what role changes in export production may have had on carbon sequestration and how this may have contributed to the onset of the Eocene-Oligocene transition (EOT). In addition, we consider if these export production variations are dominantly controlled by orbitally driven climate variability. To accomplish these objectives, we report changes in export production in the Eastern Equatorial Pacific (EEP) from Site U1333 across the EOT reconstructed from a high-resolution record of marine barite accumulation rates (BAR). BAR fluctuations suggest synchronous declines in export production associated with the two-step increases in oxygen isotopes that define the transition. The reduction in productivity across the EOT suggests that the biological pump did not contribute to carbon sequestration and the cooling over this transition. We also report a previously undocumented peak in EEP export productivity before the EOT onset. This peak is consistent with export production proxies from the Southern Ocean, potentially implying a global driver for this precursor event. We propose that this enhanced export production and the associated carbon sequestration in the late Eocene may have contributed to the pCO2 drawdown at the onset of Antarctic glaciation. Dataset Antarc* Antarctic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Pacific Southern Ocean ENVELOPE(-138.419090,-138.419090,10.516596,10.516596) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
320-U1333C Accumulation rate barite mass AGE reference Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Exp320 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Pacific Equatorial Age Transect I Sample code/label Sample mass Sedimentation rate |
spellingShingle |
320-U1333C Accumulation rate barite mass AGE reference Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Exp320 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Pacific Equatorial Age Transect I Sample code/label Sample mass Sedimentation rate Erhardt, Andrea M Pälike, Heiko Paytan, Adina Mass accumulation rates of IODP Hole 320-U1333C |
topic_facet |
320-U1333C Accumulation rate barite mass AGE reference Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Exp320 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Pacific Equatorial Age Transect I Sample code/label Sample mass Sedimentation rate |
description |
Understanding changes in export production through time provides insight into the response of the biological pump to global climate change, particularly during periods of rapid climate change. In this study we consider what role changes in export production may have had on carbon sequestration and how this may have contributed to the onset of the Eocene-Oligocene transition (EOT). In addition, we consider if these export production variations are dominantly controlled by orbitally driven climate variability. To accomplish these objectives, we report changes in export production in the Eastern Equatorial Pacific (EEP) from Site U1333 across the EOT reconstructed from a high-resolution record of marine barite accumulation rates (BAR). BAR fluctuations suggest synchronous declines in export production associated with the two-step increases in oxygen isotopes that define the transition. The reduction in productivity across the EOT suggests that the biological pump did not contribute to carbon sequestration and the cooling over this transition. We also report a previously undocumented peak in EEP export productivity before the EOT onset. This peak is consistent with export production proxies from the Southern Ocean, potentially implying a global driver for this precursor event. We propose that this enhanced export production and the associated carbon sequestration in the late Eocene may have contributed to the pCO2 drawdown at the onset of Antarctic glaciation. |
format |
Dataset |
author |
Erhardt, Andrea M Pälike, Heiko Paytan, Adina |
author_facet |
Erhardt, Andrea M Pälike, Heiko Paytan, Adina |
author_sort |
Erhardt, Andrea M |
title |
Mass accumulation rates of IODP Hole 320-U1333C |
title_short |
Mass accumulation rates of IODP Hole 320-U1333C |
title_full |
Mass accumulation rates of IODP Hole 320-U1333C |
title_fullStr |
Mass accumulation rates of IODP Hole 320-U1333C |
title_full_unstemmed |
Mass accumulation rates of IODP Hole 320-U1333C |
title_sort |
mass accumulation rates of iodp hole 320-u1333c |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.824104 https://doi.org/10.1594/PANGAEA.824104 |
op_coverage |
LATITUDE: 10.516596 * LONGITUDE: -138.419090 * MINIMUM DEPTH, sediment/rock: 113.23 m * MAXIMUM DEPTH, sediment/rock: 166.35 m |
long_lat |
ENVELOPE(-138.419090,-138.419090,10.516596,10.516596) |
geographic |
Antarctic Pacific Southern Ocean |
geographic_facet |
Antarctic Pacific Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Supplement to: Erhardt, Andrea M; Pälike, Heiko; Paytan, Adina (2013): High-resolution record of export production in the eastern equatorial Pacific across the Eocene-Oligocene transition and relationships to global climatic records. Paleoceanography, 28(1), 130-142, https://doi.org/10.1029/2012PA002347 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.824104 https://doi.org/10.1594/PANGAEA.824104 |
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.824104 https://doi.org/10.1029/2012PA002347 |
_version_ |
1766252417675952128 |