Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2004
|
| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.839747 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867171367818887168 |
|---|---|
| author | Broecker, Wallace S Clark, Elizabeth Hajdas, Irena Bonani, Georges |
| author_facet | Broecker, Wallace S Clark, Elizabeth Hajdas, Irena Bonani, Georges |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A key constraint in attempts to reconstruct the patterns and rates of the ocean's thermohaline circulation during the last glacial period is the difference between the 14C to C ratio in surface and deep water. While imperfect, it is our best index of past deep-sea ventilation rates. In this paper we review published ventilation rate estimates based on the measured radiocarbon age difference between coexisting benthic and planktic foraminifera from glacial-age Pacific sediments. We also present new results from a series of eastern equatorial Pacific sediment cores. The conclusion is that the scatter in these results is so large that the apparent 14C age of glacial deep Pacific water could lie anywhere between double and half today's. Further, it is not clear what is responsible for the wide scatter in the radiocarbon results. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_839747 |
| institution | PANGAEA |
| language | en |
| publishDate | 2004 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination using benthic and planktonic foraminifera of central Pacific Ocean sediment cores Broecker, Wallace S Clark, Elizabeth Hajdas, Irena Bonani, Georges A key constraint in attempts to reconstruct the patterns and rates of the ocean's thermohaline circulation during the last glacial period is the difference between the 14C to C ratio in surface and deep water. While imperfect, it is our best index of past deep-sea ventilation rates. In this paper we review published ventilation rate estimates based on the measured radiocarbon age difference between coexisting benthic and planktic foraminifera from glacial-age Pacific sediments. We also present new results from a series of eastern equatorial Pacific sediment cores. The conclusion is that the scatter in these results is so large that the apparent 14C age of glacial deep Pacific water could lie anywhere between double and half today's. Further, it is not clear what is responsible for the wide scatter in the radiocarbon results. |
| title | Age determination using benthic and planktonic foraminifera of central Pacific Ocean sediment cores |
| topic | |
| url | https://doi.org/10.1594/PANGAEA.839747 |