Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930
The late Paleocene thermal maximum (LPTM) is associated with a brief, but intense, interval of global warming and a massive perturbation of the global carbon cycle. We have developed a new orbital chronology for Ocean Drilling Program (ODP) Site 690 (Weddell Sea, Southern Ocean) by using spectral an...
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ftdatacite:10.1594/pangaea.57539 2023-05-15T17:12:08+02:00 Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold 2000 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.57539 https://doi.pangaea.de/10.1594/PANGAEA.57539 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1130/0091-7613(2000)28<927:ncftlp>2.0.co;2 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY XRF core scanner DEPTH, sediment/rock Calcium Iron Sample code/label Drilling/drill rig X-ray fluorescence XRF DSDP/ODP/IODP sample designation Leg113 Joides Resolution Ocean Drilling Program ODP Supplementary Dataset dataset Dataset 2000 ftdatacite https://doi.org/10.1594/pangaea.57539 https://doi.org/10.1130/0091-7613(2000)28<927:ncftlp>2.0.co;2 2022-02-08T16:24:46Z The late Paleocene thermal maximum (LPTM) is associated with a brief, but intense, interval of global warming and a massive perturbation of the global carbon cycle. We have developed a new orbital chronology for Ocean Drilling Program (ODP) Site 690 (Weddell Sea, Southern Ocean) by using spectral analysis of high-resolution geochemical records. The LPTM interval spans 11 precessional cycles yielding a duration of 210 to 220 k.y. The delta13C anomaly associated with the LPTM has a magnitude of about -2.5 per mil to -3 per mil; we show that about -2 per mil of the excursion occurs within two steps that each were less than 1000 yr in duration. The remainder developed through a series of steps over ~52 k.y. The timing of these steps is consistent with a series of nearly catastrophic releases of methane from gas hydrates, punctuated by intervals of relative equilibria between hydrate dissociation and carbon burial. Further, we are able to correlate the records between ODP Sites 690 and 1051 (western North Atlantic) on the scale of 21 k.y. cycles, which demonstrates that the details of the delta13C excursion are recognizable between distant sites. Comparison of cycle records at Sites 690 and 1051 suggests that sediment representing the interval ~30 k.y. just prior to and at the onset of the LPTM are missing in the latter location. This unconformity probably resulted from slope failure accompanying methane hydrate dissociation within 10 k.y. of the start of the LPTM. Dataset Methane hydrate North Atlantic Southern Ocean Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean Weddell Weddell Sea |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
XRF core scanner DEPTH, sediment/rock Calcium Iron Sample code/label Drilling/drill rig X-ray fluorescence XRF DSDP/ODP/IODP sample designation Leg113 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
XRF core scanner DEPTH, sediment/rock Calcium Iron Sample code/label Drilling/drill rig X-ray fluorescence XRF DSDP/ODP/IODP sample designation Leg113 Joides Resolution Ocean Drilling Program ODP Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
topic_facet |
XRF core scanner DEPTH, sediment/rock Calcium Iron Sample code/label Drilling/drill rig X-ray fluorescence XRF DSDP/ODP/IODP sample designation Leg113 Joides Resolution Ocean Drilling Program ODP |
description |
The late Paleocene thermal maximum (LPTM) is associated with a brief, but intense, interval of global warming and a massive perturbation of the global carbon cycle. We have developed a new orbital chronology for Ocean Drilling Program (ODP) Site 690 (Weddell Sea, Southern Ocean) by using spectral analysis of high-resolution geochemical records. The LPTM interval spans 11 precessional cycles yielding a duration of 210 to 220 k.y. The delta13C anomaly associated with the LPTM has a magnitude of about -2.5 per mil to -3 per mil; we show that about -2 per mil of the excursion occurs within two steps that each were less than 1000 yr in duration. The remainder developed through a series of steps over ~52 k.y. The timing of these steps is consistent with a series of nearly catastrophic releases of methane from gas hydrates, punctuated by intervals of relative equilibria between hydrate dissociation and carbon burial. Further, we are able to correlate the records between ODP Sites 690 and 1051 (western North Atlantic) on the scale of 21 k.y. cycles, which demonstrates that the details of the delta13C excursion are recognizable between distant sites. Comparison of cycle records at Sites 690 and 1051 suggests that sediment representing the interval ~30 k.y. just prior to and at the onset of the LPTM are missing in the latter location. This unconformity probably resulted from slope failure accompanying methane hydrate dissociation within 10 k.y. of the start of the LPTM. |
format |
Dataset |
author |
Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold |
author_facet |
Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold |
author_sort |
Röhl, Ursula |
title |
Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
title_short |
Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
title_full |
Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
title_fullStr |
Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
title_full_unstemmed |
Calcium and iron of ODP Hole 113-690B, supplement to: Röhl, Ursula; Bralower, Timothy J; Norris, Richard D; Wefer, Gerold (2000): New chronology for the late Paleocene thermal maximum and its environmental implications. Geology, 28(10), 927-930 |
title_sort |
calcium and iron of odp hole 113-690b, supplement to: röhl, ursula; bralower, timothy j; norris, richard d; wefer, gerold (2000): new chronology for the late paleocene thermal maximum and its environmental implications. geology, 28(10), 927-930 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2000 |
url |
https://dx.doi.org/10.1594/pangaea.57539 https://doi.pangaea.de/10.1594/PANGAEA.57539 |
geographic |
Southern Ocean Weddell Weddell Sea |
geographic_facet |
Southern Ocean Weddell Weddell Sea |
genre |
Methane hydrate North Atlantic Southern Ocean Weddell Sea |
genre_facet |
Methane hydrate North Atlantic Southern Ocean Weddell Sea |
op_relation |
https://dx.doi.org/10.1130/0091-7613(2000)28<927:ncftlp>2.0.co;2 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.57539 https://doi.org/10.1130/0091-7613(2000)28<927:ncftlp>2.0.co;2 |
_version_ |
1766068911087812608 |