Calcium and iron of ODP Hole 113-690B
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.57539 2024-09-15T18:18:42+00:00 Calcium and iron of ODP Hole 113-690B Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold LATITUDE: -65.161000 * LONGITUDE: 1.204900 * DATE/TIME START: 1987-01-20T03:15:00 * DATE/TIME END: 1987-01-21T07:00:00 * MINIMUM DEPTH, sediment/rock: 166.93 m * MAXIMUM DEPTH, sediment/rock: 173.95 m 2000 text/tab-separated-values, 1968 data points https://doi.pangaea.de/10.1594/PANGAEA.57539 https://doi.org/10.1594/PANGAEA.57539 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.57539 https://doi.org/10.1594/PANGAEA.57539 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess 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, https://doi.org/10.1130/0091-7613(2000)28%3C927:NCFTLP%3E2.0.CO;2 113-690B Calcium DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Iron Joides Resolution Leg113 Ocean Drilling Program ODP Sample code/label South Atlantic Ocean X-ray fluorescence (XRF) XRF core scanner dataset 2000 ftpangaea https://doi.org/10.1594/PANGAEA.5753910.1130/0091-7613(2000)28%3C927:NCFTLP%3E2.0.CO;2 2024-07-24T02:31:21Z 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 South Atlantic Ocean Southern Ocean Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(1.204900,1.204900,-65.161000,-65.161000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
113-690B Calcium DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Iron Joides Resolution Leg113 Ocean Drilling Program ODP Sample code/label South Atlantic Ocean X-ray fluorescence (XRF) XRF core scanner |
spellingShingle |
113-690B Calcium DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Iron Joides Resolution Leg113 Ocean Drilling Program ODP Sample code/label South Atlantic Ocean X-ray fluorescence (XRF) XRF core scanner Röhl, Ursula Bralower, Timothy J Norris, Richard D Wefer, Gerold Calcium and iron of ODP Hole 113-690B |
topic_facet |
113-690B Calcium DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Iron Joides Resolution Leg113 Ocean Drilling Program ODP Sample code/label South Atlantic Ocean X-ray fluorescence (XRF) XRF core scanner |
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 |
title_short |
Calcium and iron of ODP Hole 113-690B |
title_full |
Calcium and iron of ODP Hole 113-690B |
title_fullStr |
Calcium and iron of ODP Hole 113-690B |
title_full_unstemmed |
Calcium and iron of ODP Hole 113-690B |
title_sort |
calcium and iron of odp hole 113-690b |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.57539 https://doi.org/10.1594/PANGAEA.57539 |
op_coverage |
LATITUDE: -65.161000 * LONGITUDE: 1.204900 * DATE/TIME START: 1987-01-20T03:15:00 * DATE/TIME END: 1987-01-21T07:00:00 * MINIMUM DEPTH, sediment/rock: 166.93 m * MAXIMUM DEPTH, sediment/rock: 173.95 m |
long_lat |
ENVELOPE(1.204900,1.204900,-65.161000,-65.161000) |
genre |
Methane hydrate North Atlantic South Atlantic Ocean Southern Ocean Weddell Sea |
genre_facet |
Methane hydrate North Atlantic South Atlantic Ocean Southern Ocean Weddell Sea |
op_source |
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, https://doi.org/10.1130/0091-7613(2000)28%3C927:NCFTLP%3E2.0.CO;2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.57539 https://doi.org/10.1594/PANGAEA.57539 |
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.5753910.1130/0091-7613(2000)28%3C927:NCFTLP%3E2.0.CO;2 |
_version_ |
1810456785297866752 |