(Table 1) Age determination of sediment core JT96-09PC
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| Autores principales: | , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2005
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| _version_ | 1867171826106368000 |
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| author | McKay, Jennifer L Pedersen, Thomas F Southon, John |
| author_facet | McKay, Jennifer L Pedersen, Thomas F Southon, John |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | he oxygen minimum zone (OMZ) off Vancouver Island was more oxygen depleted relative to modern conditions during the Allerød (~13.5 to 12.6 calendar kyr) and again from ~11 to 10 kyr. The timing of OMZ intensification is similar to that seen throughout the North Pacific, although the onset appears to have been delayed by ~1500 years off Vancouver Island. Radiocarbon dating of coeval benthic and planktonic foraminifera shows that between 16.0 and 12.6 kyr the age contrast between surface and intermediate waters (920 m depth) off Vancouver Island was similar to, or slightly less than, that today. There is no evidence of an increased age difference (i.e., decreased ventilation) during the deglaciation, particularly during the Allerød. However, sedimentary marine organic carbon concentration and mass accumulation rate increased substantially in the Allerød, suggesting that increased organic matter export was the principal cause of late Pleistocene OMZ intensification off Vancouver Island. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_835312 |
| institution | PANGAEA |
| language | en |
| publishDate | 2005 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Age determination of sediment core JT96-09PC McKay, Jennifer L Pedersen, Thomas F Southon, John Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated, standard deviation; Age, difference; Age, difference error; Calculated; Calendar age; DEPTH, sediment/rock; GC; Gravity corer; JT96-09; JT96-09PC he oxygen minimum zone (OMZ) off Vancouver Island was more oxygen depleted relative to modern conditions during the Allerød (~13.5 to 12.6 calendar kyr) and again from ~11 to 10 kyr. The timing of OMZ intensification is similar to that seen throughout the North Pacific, although the onset appears to have been delayed by ~1500 years off Vancouver Island. Radiocarbon dating of coeval benthic and planktonic foraminifera shows that between 16.0 and 12.6 kyr the age contrast between surface and intermediate waters (920 m depth) off Vancouver Island was similar to, or slightly less than, that today. There is no evidence of an increased age difference (i.e., decreased ventilation) during the deglaciation, particularly during the Allerød. However, sedimentary marine organic carbon concentration and mass accumulation rate increased substantially in the Allerød, suggesting that increased organic matter export was the principal cause of late Pleistocene OMZ intensification off Vancouver Island. |
| title | (Table 1) Age determination of sediment core JT96-09PC |
| topic | Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated, standard deviation; Age, difference; Age, difference error; Calculated; Calendar age; DEPTH, sediment/rock; GC; Gravity corer; JT96-09; JT96-09PC |
| url | https://doi.org/10.1594/PANGAEA.835312 |