High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968
We completed and merged an existing high-resolution X-Ray Fluorescence (XRF) data set derived from Ocean Drilling Program (ODP) site 968 with new data from adjacent ODP site 967. An astronomical age model spanning the last 1.05 Myr was constructed for the spliced record using the highly linear relat...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831712 2023-05-15T16:41:38+02:00 High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 Konijnendijk, Theodoor Yuri Martij Ziegler, Martin Lourens, Lucas Joost MEDIAN LATITUDE: 34.174280 * MEDIAN LONGITUDE: 32.735680 * SOUTH-BOUND LATITUDE: 34.068300 * WEST-BOUND LONGITUDE: 32.725300 * NORTH-BOUND LATITUDE: 34.332000 * EAST-BOUND LONGITUDE: 32.751100 * DATE/TIME START: 1995-04-01T23:50:00 * DATE/TIME END: 1995-04-12T19:15:00 * MINIMUM DEPTH, sediment/rock: 0.10 m * MAXIMUM DEPTH, sediment/rock: 32.98 m 2014-04-11 text/tab-separated-values, 8120 data points https://doi.pangaea.de/10.1594/PANGAEA.831712 https://doi.org/10.1594/PANGAEA.831712 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.831712 https://doi.org/10.1594/PANGAEA.831712 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Konijnendijk, Theodoor Yuri Martij; Ziegler, Martin; Lourens, Lucas Joost (2014): Chronological constraints on Pleistocene sapropel depositions from high-resolution geochemical records of ODP Sites 967 and 968. Newsletters on Stratigraphy, 47(3), 263-282, https://doi.org/10.1127/0078-0421/2014/0047 160-967A 160-967B 160-967C 160-968A 160-968B AGE Aluminium Depth composite revised sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Eastern Basin Event label Intercore correlation Joides Resolution Leg160 Ocean Drilling Program ODP Sample code/label Titanium X-ray fluorescence (XRF) Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.831712 https://doi.org/10.1127/0078-0421/2014/0047 2023-01-20T09:03:14Z We completed and merged an existing high-resolution X-Ray Fluorescence (XRF) data set derived from Ocean Drilling Program (ODP) site 968 with new data from adjacent ODP site 967. An astronomical age model spanning the last 1.05 Myr was constructed for the spliced record using the highly linear relation between the elemental ratio of titanium and aluminum in the sediment (Ti/Al) and insolation. This rendered detailed ages for sapropel deposition in the Eastern Mediterranean. Our results imply major revisions of previous sapropel age models below MIS 11, with changes of up to two precession cycles in the interval ~450-850 ka of the ODP 967 sapropel chronology. Based on the Ti/Al age model, we find that color reflectance - used as an indicator for sapropels in this interval of ODP site 967 and 968 - is highly incongruent with the Ti/Al proxy as well as insolation forcing during periods of minima in the 405 kyr eccentricity cycle. Our findings indicate that the use of color reflectance as a proxy for so-called ghost sapropels in these intervals is not reliable. Lastly, we demonstrate the presence of a strong obliquity signal in the Ti/Al record that lags obliquity forcing by 4±0.7 kyr). This time lag is only marginally longer than the adopted 2.7±1.1 kyr for the dominantly precession-tuned age model, and is hence much shorter than the generally accepted ice sheet response time to insolation forcing. This suggests that the obliquity-bound changes in Ti/Al are not glacial controlled and most likely reflect changes in low-latitude climate oscillations, such as the monsoon. Dataset Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(32.725300,32.751100,34.332000,34.068300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
160-967A 160-967B 160-967C 160-968A 160-968B AGE Aluminium Depth composite revised sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Eastern Basin Event label Intercore correlation Joides Resolution Leg160 Ocean Drilling Program ODP Sample code/label Titanium X-ray fluorescence (XRF) |
spellingShingle |
160-967A 160-967B 160-967C 160-968A 160-968B AGE Aluminium Depth composite revised sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Eastern Basin Event label Intercore correlation Joides Resolution Leg160 Ocean Drilling Program ODP Sample code/label Titanium X-ray fluorescence (XRF) Konijnendijk, Theodoor Yuri Martij Ziegler, Martin Lourens, Lucas Joost High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
topic_facet |
160-967A 160-967B 160-967C 160-968A 160-968B AGE Aluminium Depth composite revised sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Eastern Basin Event label Intercore correlation Joides Resolution Leg160 Ocean Drilling Program ODP Sample code/label Titanium X-ray fluorescence (XRF) |
description |
We completed and merged an existing high-resolution X-Ray Fluorescence (XRF) data set derived from Ocean Drilling Program (ODP) site 968 with new data from adjacent ODP site 967. An astronomical age model spanning the last 1.05 Myr was constructed for the spliced record using the highly linear relation between the elemental ratio of titanium and aluminum in the sediment (Ti/Al) and insolation. This rendered detailed ages for sapropel deposition in the Eastern Mediterranean. Our results imply major revisions of previous sapropel age models below MIS 11, with changes of up to two precession cycles in the interval ~450-850 ka of the ODP 967 sapropel chronology. Based on the Ti/Al age model, we find that color reflectance - used as an indicator for sapropels in this interval of ODP site 967 and 968 - is highly incongruent with the Ti/Al proxy as well as insolation forcing during periods of minima in the 405 kyr eccentricity cycle. Our findings indicate that the use of color reflectance as a proxy for so-called ghost sapropels in these intervals is not reliable. Lastly, we demonstrate the presence of a strong obliquity signal in the Ti/Al record that lags obliquity forcing by 4±0.7 kyr). This time lag is only marginally longer than the adopted 2.7±1.1 kyr for the dominantly precession-tuned age model, and is hence much shorter than the generally accepted ice sheet response time to insolation forcing. This suggests that the obliquity-bound changes in Ti/Al are not glacial controlled and most likely reflect changes in low-latitude climate oscillations, such as the monsoon. |
format |
Dataset |
author |
Konijnendijk, Theodoor Yuri Martij Ziegler, Martin Lourens, Lucas Joost |
author_facet |
Konijnendijk, Theodoor Yuri Martij Ziegler, Martin Lourens, Lucas Joost |
author_sort |
Konijnendijk, Theodoor Yuri Martij |
title |
High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
title_short |
High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
title_full |
High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
title_fullStr |
High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
title_full_unstemmed |
High-resolution elemental concentration measurements of ODP Sites 160-967 and 160-968 |
title_sort |
high-resolution elemental concentration measurements of odp sites 160-967 and 160-968 |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.831712 https://doi.org/10.1594/PANGAEA.831712 |
op_coverage |
MEDIAN LATITUDE: 34.174280 * MEDIAN LONGITUDE: 32.735680 * SOUTH-BOUND LATITUDE: 34.068300 * WEST-BOUND LONGITUDE: 32.725300 * NORTH-BOUND LATITUDE: 34.332000 * EAST-BOUND LONGITUDE: 32.751100 * DATE/TIME START: 1995-04-01T23:50:00 * DATE/TIME END: 1995-04-12T19:15:00 * MINIMUM DEPTH, sediment/rock: 0.10 m * MAXIMUM DEPTH, sediment/rock: 32.98 m |
long_lat |
ENVELOPE(32.725300,32.751100,34.332000,34.068300) |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Supplement to: Konijnendijk, Theodoor Yuri Martij; Ziegler, Martin; Lourens, Lucas Joost (2014): Chronological constraints on Pleistocene sapropel depositions from high-resolution geochemical records of ODP Sites 967 and 968. Newsletters on Stratigraphy, 47(3), 263-282, https://doi.org/10.1127/0078-0421/2014/0047 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.831712 https://doi.org/10.1594/PANGAEA.831712 |
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.831712 https://doi.org/10.1127/0078-0421/2014/0047 |
_version_ |
1766032081394073600 |