Calculating surface water pCO(2) from foraminiferal organic delta C-13
The delta(13)C Of organic matter bound within the crystal lattice of foraminiferal calcite tests may provide a potential tracer of the isotopic composition of the surface water primary photosynthate. Using delta(13)C of the organic matter extracted from the crystal lattice and the calcite test, it i...
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1996
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ftucl:oai:eprints.ucl.ac.uk.OAI2:101344 2023-05-15T17:33:13+02:00 Calculating surface water pCO(2) from foraminiferal organic delta C-13 Maslin, MA Hall, MA Shackleton, NJ Thomas, E 1996-12 http://discovery.ucl.ac.uk/101344/ unknown PERGAMON-ELSEVIER SCIENCE LTD GEOCHIM COSMOCHIM AC , 60 (24) 5089 - 5100. (1996) NORTH-ATLANTIC OCEAN LAST 45,000 YEARS PLANKTONIC-FORAMINIFERA ATMOSPHERIC CO2 LATE QUATERNARY BENTHIC FORAMINIFERA CARBON-DIOXIDE SOUTHERN-OCEAN DEEP-SEA RECORD Article 1996 ftucl 2016-01-15T02:34:48Z The delta(13)C Of organic matter bound within the crystal lattice of foraminiferal calcite tests may provide a potential tracer of the isotopic composition of the surface water primary photosynthate. Using delta(13)C of the organic matter extracted from the crystal lattice and the calcite test, it is theoretically possible to estimate the paleo-surface water pCO(2). We have tailored this technique initially for the subpolar planktonic foraminifera species Globigerina bulloides. Initial surface water pCO(2) estimates from deepsea core BOFS 5K (50 degrees 41.3'N, 21 degrees 51,9'W, water depth 3547 m) indicate that the northeast Atlantic Ocean may have been a greater sink for CO2 during the last glacial than during the Holocene. Greatly reduced benthic foraminifera abundances, especially phytodetritus feeders, in BOFS 5K during the last glacial indicates low surface productivity. This rules out a productivity-driven CO2 sink. The enhanced glacial CO2 sink must, therefore, have results from a southwards shift of the centre of deep water formation. Article in Journal/Newspaper North Atlantic Northeast Atlantic Planktonic foraminifera Southern Ocean University College London: UCL Discovery Southern Ocean |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
unknown |
topic |
NORTH-ATLANTIC OCEAN LAST 45,000 YEARS PLANKTONIC-FORAMINIFERA ATMOSPHERIC CO2 LATE QUATERNARY BENTHIC FORAMINIFERA CARBON-DIOXIDE SOUTHERN-OCEAN DEEP-SEA RECORD |
spellingShingle |
NORTH-ATLANTIC OCEAN LAST 45,000 YEARS PLANKTONIC-FORAMINIFERA ATMOSPHERIC CO2 LATE QUATERNARY BENTHIC FORAMINIFERA CARBON-DIOXIDE SOUTHERN-OCEAN DEEP-SEA RECORD Maslin, MA Hall, MA Shackleton, NJ Thomas, E Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
topic_facet |
NORTH-ATLANTIC OCEAN LAST 45,000 YEARS PLANKTONIC-FORAMINIFERA ATMOSPHERIC CO2 LATE QUATERNARY BENTHIC FORAMINIFERA CARBON-DIOXIDE SOUTHERN-OCEAN DEEP-SEA RECORD |
description |
The delta(13)C Of organic matter bound within the crystal lattice of foraminiferal calcite tests may provide a potential tracer of the isotopic composition of the surface water primary photosynthate. Using delta(13)C of the organic matter extracted from the crystal lattice and the calcite test, it is theoretically possible to estimate the paleo-surface water pCO(2). We have tailored this technique initially for the subpolar planktonic foraminifera species Globigerina bulloides. Initial surface water pCO(2) estimates from deepsea core BOFS 5K (50 degrees 41.3'N, 21 degrees 51,9'W, water depth 3547 m) indicate that the northeast Atlantic Ocean may have been a greater sink for CO2 during the last glacial than during the Holocene. Greatly reduced benthic foraminifera abundances, especially phytodetritus feeders, in BOFS 5K during the last glacial indicates low surface productivity. This rules out a productivity-driven CO2 sink. The enhanced glacial CO2 sink must, therefore, have results from a southwards shift of the centre of deep water formation. |
format |
Article in Journal/Newspaper |
author |
Maslin, MA Hall, MA Shackleton, NJ Thomas, E |
author_facet |
Maslin, MA Hall, MA Shackleton, NJ Thomas, E |
author_sort |
Maslin, MA |
title |
Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
title_short |
Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
title_full |
Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
title_fullStr |
Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
title_full_unstemmed |
Calculating surface water pCO(2) from foraminiferal organic delta C-13 |
title_sort |
calculating surface water pco(2) from foraminiferal organic delta c-13 |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
1996 |
url |
http://discovery.ucl.ac.uk/101344/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
North Atlantic Northeast Atlantic Planktonic foraminifera Southern Ocean |
genre_facet |
North Atlantic Northeast Atlantic Planktonic foraminifera Southern Ocean |
op_source |
GEOCHIM COSMOCHIM AC , 60 (24) 5089 - 5100. (1996) |
_version_ |
1766131648292716544 |