Age determination of sediments and biomarkers of ODP Hole 169-1034C
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| Auteurs principaux: | , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2004
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| _version_ | 1867167672539545600 |
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| author | Smittenberg, Rienk H Hopmans, Ellen C Schouten, Stefan Hayes, John M Eglinton, Timothy Ian Sinninghe Damsté, Jaap S |
| author_facet | Smittenberg, Rienk H Hopmans, Ellen C Schouten, Stefan Hayes, John M Eglinton, Timothy Ian Sinninghe Damsté, Jaap S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The radiocarbon contents of various biomarkers extracted from the varve-counted sediments of Saanich Inlet, Canada, were determined to assess their applicability for dating purposes. Calibrated ages obtained from the marine planktonic archaeal biomarker crenarchaeol compared favorably with varve-count ages. The same conclusion could be drawn for a more general archaeal biomarker (GDGT-0), although this biomarker proved to be less reliable due to its less-specific origin. The results also lend support to earlier indications that marine crenarchaeota use dissolved inorganic carbon (DIC) as their carbon source. The average reservoir age offset DR of 430 years, determined using the crenarchaeol radiocarbon ages, varied by ±110 years. This may be caused by natural variations in ocean-atmosphere mixing or upwelling at the NE Pacific coast but variability may also be due to an inconsistency in the marine calibration curve when used at sites with high reservoir ages. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_839321 |
| institution | PANGAEA |
| language | en |
| publishDate | 2004 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination of sediments and biomarkers of ODP Hole 169-1034C Smittenberg, Rienk H Hopmans, Ellen C Schouten, Stefan Hayes, John M Eglinton, Timothy Ian Sinninghe Damsté, Jaap S Ocean Drilling Program; ODP The radiocarbon contents of various biomarkers extracted from the varve-counted sediments of Saanich Inlet, Canada, were determined to assess their applicability for dating purposes. Calibrated ages obtained from the marine planktonic archaeal biomarker crenarchaeol compared favorably with varve-count ages. The same conclusion could be drawn for a more general archaeal biomarker (GDGT-0), although this biomarker proved to be less reliable due to its less-specific origin. The results also lend support to earlier indications that marine crenarchaeota use dissolved inorganic carbon (DIC) as their carbon source. The average reservoir age offset DR of 430 years, determined using the crenarchaeol radiocarbon ages, varied by ±110 years. This may be caused by natural variations in ocean-atmosphere mixing or upwelling at the NE Pacific coast but variability may also be due to an inconsistency in the marine calibration curve when used at sites with high reservoir ages. |
| title | Age determination of sediments and biomarkers of ODP Hole 169-1034C |
| topic | Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.839321 |