(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154
Strontium/calcium (Sr/Ca) ratios in bulk and foraminiferal calcite have been used to constrain the history of Sr/Ca in the oceans and to evaluate calcite diagenetic alteration. However bulk Sr/Ca records also may be influenced by differences in Sr uptake and/or in the diagenetic susceptibility of di...
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2000
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.745110 https://doi.org/10.1594/PANGAEA.745110 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.745110 |
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openpolar |
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Open Polar |
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PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
130-803C 130-803D 130-804A 130-804B 130-804C 130-806B 130-806C 130-807A 130-807C 138-844 138-846A 138-846B 154-925A 154-925B 154-925E 154-929A 154-929B 154-929E AGE Calcium carbonate Calculated COMPCORE Composite Core Coulometry DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label ICP-MS Thermo Finnigan Mat Element Joides Resolution Leg130 Leg138 Leg154 Mass North Atlantic Ocean North Pacific Ocean Ocean Drilling Program ODP Sample code/label Size fraction < 0.045 mm Size fraction > 0.063 mm sand Size fraction > 0.425 mm Size fraction 0.063-0.045 mm Size fraction 0.125-0.063 mm Size fraction 0.250-0.125 mm |
spellingShingle |
130-803C 130-803D 130-804A 130-804B 130-804C 130-806B 130-806C 130-807A 130-807C 138-844 138-846A 138-846B 154-925A 154-925B 154-925E 154-929A 154-929B 154-929E AGE Calcium carbonate Calculated COMPCORE Composite Core Coulometry DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label ICP-MS Thermo Finnigan Mat Element Joides Resolution Leg130 Leg138 Leg154 Mass North Atlantic Ocean North Pacific Ocean Ocean Drilling Program ODP Sample code/label Size fraction < 0.045 mm Size fraction > 0.063 mm sand Size fraction > 0.425 mm Size fraction 0.063-0.045 mm Size fraction 0.125-0.063 mm Size fraction 0.250-0.125 mm Andreasen, Gretchen Hampt Delaney, Margaret Lois (Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
topic_facet |
130-803C 130-803D 130-804A 130-804B 130-804C 130-806B 130-806C 130-807A 130-807C 138-844 138-846A 138-846B 154-925A 154-925B 154-925E 154-929A 154-929B 154-929E AGE Calcium carbonate Calculated COMPCORE Composite Core Coulometry DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label ICP-MS Thermo Finnigan Mat Element Joides Resolution Leg130 Leg138 Leg154 Mass North Atlantic Ocean North Pacific Ocean Ocean Drilling Program ODP Sample code/label Size fraction < 0.045 mm Size fraction > 0.063 mm sand Size fraction > 0.425 mm Size fraction 0.063-0.045 mm Size fraction 0.125-0.063 mm Size fraction 0.250-0.125 mm |
description |
Strontium/calcium (Sr/Ca) ratios in bulk and foraminiferal calcite have been used to constrain the history of Sr/Ca in the oceans and to evaluate calcite diagenetic alteration. However bulk Sr/Ca records also may be influenced by differences in Sr uptake and/or in the diagenetic susceptibility of different calcium carbonate sedimentary components. We present data on the sediment size fraction and calcium carbonate distribution in bulk samples, Sr/Ca in a range of sedimentary size components, and Sr/Ca in bulk sediments. Ocean Drilling Program samples from sites on Ontong Java Plateau and Ceara Rise (in the western equatorial Pacific and Atlantic, respectively) and from sites in the eastern equatorial Pacific were selected to represent progressive stages in the diagenetic pathway from the sea floor through a range of burial depths equivalent to sediment ages of ~5.6, ~9.4, and ~37.1 Ma. Samples were subdivided by size to produce a unique data set of size-specific Sr/Ca ratios. Fine fraction (<45 ?m) Sr/Ca ratios are higher than those of all corresponding coarse fractions, indicating that fine nannofossil-dominated calcite has a Sr partition coefficient 1.3–1.5 times greater than that of coarse foraminifera-dominated calcite. Thus, absolute values of bulk Sr/Ca in contemporaneous samples reflect, in part, the ratio of fine to coarse calcite sedimentary components. Sr/Ca values in fine and coarse components also behave differently in their response to pre-burial dissolution and to recrystallization at depth. Coarse size components are sensitive to bottom water carbonate ion undersaturation, and they lose original Sr/Ca differences among contemporary samples over not, vert, similar10 my. In contrast, fine components recrystallize faster in more deeply buried samples. Interpretation of the historical Sr/Ca record is complicated by post-depositional diagenetic artifacts, and thus our data do not provide clear evidence of specific temporal changes in oceanic Sr/Ca ratios over the past 10 million years. This paper ... |
format |
Dataset |
author |
Andreasen, Gretchen Hampt Delaney, Margaret Lois |
author_facet |
Andreasen, Gretchen Hampt Delaney, Margaret Lois |
author_sort |
Andreasen, Gretchen Hampt |
title |
(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
title_short |
(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
title_full |
(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
title_fullStr |
(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
title_full_unstemmed |
(Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 |
title_sort |
(table a1) caco3 contents and sr/ca ratios in odp leg 130, 138 and 154 |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.745110 https://doi.org/10.1594/PANGAEA.745110 |
op_coverage |
MEDIAN LATITUDE: 2.655370 * MEDIAN LONGITUDE: -129.766677 * SOUTH-BOUND LATITUDE: -3.094930 * WEST-BOUND LONGITUDE: 156.625000 * NORTH-BOUND LATITUDE: 7.921317 * EAST-BOUND LONGITUDE: -43.488900 * DATE/TIME START: 1990-01-29T15:30:00 * DATE/TIME END: 1994-03-21T08:45:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 987.18 m |
long_lat |
ENVELOPE(156.625000,-43.488900,7.921317,-3.094930) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Andreasen, Gretchen Hampt; Delaney, Margaret Lois (2000): Bulk calcite size fraction distribution and Sr/Ca composition for deep-sea sediments at selected age horizons. Marine Geology, 169(1-2), 185-205, https://doi.org/10.1016/S0025-3227(00)00051-7 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.745110 https://doi.org/10.1594/PANGAEA.745110 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74511010.1016/S0025-3227(00)00051-7 |
_version_ |
1810464906790567936 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.745110 2024-09-15T18:24:32+00:00 (Table A1) CaCO3 contents and Sr/Ca ratios in ODP Leg 130, 138 and 154 Andreasen, Gretchen Hampt Delaney, Margaret Lois MEDIAN LATITUDE: 2.655370 * MEDIAN LONGITUDE: -129.766677 * SOUTH-BOUND LATITUDE: -3.094930 * WEST-BOUND LONGITUDE: 156.625000 * NORTH-BOUND LATITUDE: 7.921317 * EAST-BOUND LONGITUDE: -43.488900 * DATE/TIME START: 1990-01-29T15:30:00 * DATE/TIME END: 1994-03-21T08:45:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 987.18 m 2000 text/tab-separated-values, 891 data points https://doi.pangaea.de/10.1594/PANGAEA.745110 https://doi.org/10.1594/PANGAEA.745110 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.745110 https://doi.org/10.1594/PANGAEA.745110 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Andreasen, Gretchen Hampt; Delaney, Margaret Lois (2000): Bulk calcite size fraction distribution and Sr/Ca composition for deep-sea sediments at selected age horizons. Marine Geology, 169(1-2), 185-205, https://doi.org/10.1016/S0025-3227(00)00051-7 130-803C 130-803D 130-804A 130-804B 130-804C 130-806B 130-806C 130-807A 130-807C 138-844 138-846A 138-846B 154-925A 154-925B 154-925E 154-929A 154-929B 154-929E AGE Calcium carbonate Calculated COMPCORE Composite Core Coulometry DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label ICP-MS Thermo Finnigan Mat Element Joides Resolution Leg130 Leg138 Leg154 Mass North Atlantic Ocean North Pacific Ocean Ocean Drilling Program ODP Sample code/label Size fraction < 0.045 mm Size fraction > 0.063 mm sand Size fraction > 0.425 mm Size fraction 0.063-0.045 mm Size fraction 0.125-0.063 mm Size fraction 0.250-0.125 mm dataset 2000 ftpangaea https://doi.org/10.1594/PANGAEA.74511010.1016/S0025-3227(00)00051-7 2024-08-21T00:02:26Z Strontium/calcium (Sr/Ca) ratios in bulk and foraminiferal calcite have been used to constrain the history of Sr/Ca in the oceans and to evaluate calcite diagenetic alteration. However bulk Sr/Ca records also may be influenced by differences in Sr uptake and/or in the diagenetic susceptibility of different calcium carbonate sedimentary components. We present data on the sediment size fraction and calcium carbonate distribution in bulk samples, Sr/Ca in a range of sedimentary size components, and Sr/Ca in bulk sediments. Ocean Drilling Program samples from sites on Ontong Java Plateau and Ceara Rise (in the western equatorial Pacific and Atlantic, respectively) and from sites in the eastern equatorial Pacific were selected to represent progressive stages in the diagenetic pathway from the sea floor through a range of burial depths equivalent to sediment ages of ~5.6, ~9.4, and ~37.1 Ma. Samples were subdivided by size to produce a unique data set of size-specific Sr/Ca ratios. Fine fraction (<45 ?m) Sr/Ca ratios are higher than those of all corresponding coarse fractions, indicating that fine nannofossil-dominated calcite has a Sr partition coefficient 1.3–1.5 times greater than that of coarse foraminifera-dominated calcite. Thus, absolute values of bulk Sr/Ca in contemporaneous samples reflect, in part, the ratio of fine to coarse calcite sedimentary components. Sr/Ca values in fine and coarse components also behave differently in their response to pre-burial dissolution and to recrystallization at depth. Coarse size components are sensitive to bottom water carbonate ion undersaturation, and they lose original Sr/Ca differences among contemporary samples over not, vert, similar10 my. In contrast, fine components recrystallize faster in more deeply buried samples. Interpretation of the historical Sr/Ca record is complicated by post-depositional diagenetic artifacts, and thus our data do not provide clear evidence of specific temporal changes in oceanic Sr/Ca ratios over the past 10 million years. This paper ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(156.625000,-43.488900,7.921317,-3.094930) |