Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618
We present late Quaternary records of aragonite preservation determined for sediment cores recovered on the Brazilian Continental Slope (1790-2585 m water depth) where North Atlantic Deep Water (NADW) dominates at present. We have used various indirect dissolution proxies (carbonate content, aragoni...
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ftdatacite:10.1594/pangaea.712059 2023-05-15T17:13:54+02:00 Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 Gerhardt, Sabine Groth, H Rühlemann, Carsten Henrich, Rüdiger 2000 application/zip https://dx.doi.org/10.1594/pangaea.712059 https://doi.pangaea.de/10.1594/PANGAEA.712059 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1007/s005310050291 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY MultiCorer Gravity corer Kiel type M23/3 Meteor 1986 South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 Collection article Supplementary Collection of Datasets 2000 ftdatacite https://doi.org/10.1594/pangaea.712059 https://doi.org/10.1007/s005310050291 2021-11-05T12:55:41Z We present late Quaternary records of aragonite preservation determined for sediment cores recovered on the Brazilian Continental Slope (1790-2585 m water depth) where North Atlantic Deep Water (NADW) dominates at present. We have used various indirect dissolution proxies (carbonate content, aragonite/calcite contents, and sand percentages) as well as gastropodal abundances and fragmentation of Limacina inflata to determine the state of aragonite preservation. In addition, microscopic investigations of the dissolution susceptibility of three Limacina species yielded the Limacina Dissolution Index which correlates well with most of the other proxies. Excellent preservation of aragonite was found in the Holocene section, whereas aragonite dissolution gradually increases downcore. This general pattern is attributed to an overall increase in aragonite corrosiveness of pore waters. Overprinted on this early diagenetic trend are high-frequency fluctuations of aragonite preservation, which may be related to climatically induced variations of intermediate water masses. Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
MultiCorer Gravity corer Kiel type M23/3 Meteor 1986 South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
spellingShingle |
MultiCorer Gravity corer Kiel type M23/3 Meteor 1986 South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 Gerhardt, Sabine Groth, H Rühlemann, Carsten Henrich, Rüdiger Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
topic_facet |
MultiCorer Gravity corer Kiel type M23/3 Meteor 1986 South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
description |
We present late Quaternary records of aragonite preservation determined for sediment cores recovered on the Brazilian Continental Slope (1790-2585 m water depth) where North Atlantic Deep Water (NADW) dominates at present. We have used various indirect dissolution proxies (carbonate content, aragonite/calcite contents, and sand percentages) as well as gastropodal abundances and fragmentation of Limacina inflata to determine the state of aragonite preservation. In addition, microscopic investigations of the dissolution susceptibility of three Limacina species yielded the Limacina Dissolution Index which correlates well with most of the other proxies. Excellent preservation of aragonite was found in the Holocene section, whereas aragonite dissolution gradually increases downcore. This general pattern is attributed to an overall increase in aragonite corrosiveness of pore waters. Overprinted on this early diagenetic trend are high-frequency fluctuations of aragonite preservation, which may be related to climatically induced variations of intermediate water masses. |
format |
Article in Journal/Newspaper |
author |
Gerhardt, Sabine Groth, H Rühlemann, Carsten Henrich, Rüdiger |
author_facet |
Gerhardt, Sabine Groth, H Rühlemann, Carsten Henrich, Rüdiger |
author_sort |
Gerhardt, Sabine |
title |
Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
title_short |
Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
title_full |
Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
title_fullStr |
Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
title_full_unstemmed |
Aragonite distribution and preservation of sediment cores from the Brazilian Continental Slope, supplement to: Gerhardt, Sabine; Groth, H; Rühlemann, Carsten; Henrich, Rüdiger (2000): Aragonite preservation in late Quaternary sediment cores on the Brazilian Continental Slope: implications for intermediate water circulation. International Journal of Earth Sciences, 88(4), 607-618 |
title_sort |
aragonite distribution and preservation of sediment cores from the brazilian continental slope, supplement to: gerhardt, sabine; groth, h; rühlemann, carsten; henrich, rüdiger (2000): aragonite preservation in late quaternary sediment cores on the brazilian continental slope: implications for intermediate water circulation. international journal of earth sciences, 88(4), 607-618 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2000 |
url |
https://dx.doi.org/10.1594/pangaea.712059 https://doi.pangaea.de/10.1594/PANGAEA.712059 |
genre |
NADW North Atlantic Deep Water North Atlantic |
genre_facet |
NADW North Atlantic Deep Water North Atlantic |
op_relation |
https://dx.doi.org/10.1007/s005310050291 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.712059 https://doi.org/10.1007/s005310050291 |
_version_ |
1766071086001160192 |