(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia
A marked ocean acidification event and elevated atmospheric carbon dioxide concentrations following the extreme environmental conditions of the younger Cryogenian glaciation have been inferred from boron isotope measurements. Calcium and magnesium isotope analyses offer additional insights into the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.833928 2023-05-15T17:51:32+02:00 (Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia Kasemann, Simone A Pogge von Strandmann, Philip A E Prave, Anthony R Fallick, Anthony E Elliott, Tim Hoffmann, Karl-Heinz MEDIAN LATITUDE: -19.586229 * MEDIAN LONGITUDE: 14.336760 * SOUTH-BOUND LATITUDE: -20.199167 * WEST-BOUND LONGITUDE: 13.995608 * NORTH-BOUND LATITUDE: -19.256564 * EAST-BOUND LONGITUDE: 15.016164 * MINIMUM SECTION, height: 0.0 m * MAXIMUM SECTION, height: 300.3 m 2014-07-10 text/tab-separated-values, 419 data points https://doi.pangaea.de/10.1594/PANGAEA.833928 https://doi.org/10.1594/PANGAEA.833928 en eng PANGAEA Kasemann, Simone A; Hawkesworth, Chris J; Prave, Anthony R; Fallick, Anthony E; Pearson, Paul N (2005): Boron and calcium isotope composition in Neoproterozoic carbonate rocks from Namibia: evidence for extreme environmental change. Earth and Planetary Science Letters, 231(1-2), 73-86, https://doi.org/10.1016/j.epsl.2004.12.006 Kasemann, Simone A; Prave, Anthony R; Fallick, Anthony E; Hawkesworth, Chris J; Hoffmann, Karl-Heinz (2010): Neoproterozoic ice ages, boron isotopes, and ocean acidification: Implications for a snowball Earth. Geology, 38(9), 775-778, https://doi.org/10.1130/G30851.1 https://doi.pangaea.de/10.1594/PANGAEA.833928 https://doi.org/10.1594/PANGAEA.833928 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kasemann, Simone A; Pogge von Strandmann, Philip A E; Prave, Anthony R; Fallick, Anthony E; Elliott, Tim; Hoffmann, Karl-Heinz (2014): Continental weathering following a Cryogenian glaciation: Evidence from calcium and magnesium isotopes. Earth and Planetary Science Letters, 396, 66-77, https://doi.org/10.1016/j.epsl.2014.03.048 Center for Marine Environmental Sciences Event label Finnigan TRITON thermal ionization mass spectrometer (TIMS) Fransfontein Khowarib Lithologic unit/sequence Lithology/composition/facies MARUM NW Namibia Ombaatjie PROFILE Profile sampling Sample code/label SECTION height Uncertainty δ11B δ13C carbonate δ18O δ26Mg δ44/40 Ca Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.833928 https://doi.org/10.1016/j.epsl.2014.03.048 https://doi.org/10.1016/j.epsl.2004.12.006 https://doi.org/10.1130/G30851.1 2023-01-20T09:03:28Z A marked ocean acidification event and elevated atmospheric carbon dioxide concentrations following the extreme environmental conditions of the younger Cryogenian glaciation have been inferred from boron isotope measurements. Calcium and magnesium isotope analyses offer additional insights into the processes occurring during this time. Data from Neoproterozoic sections in Namibia indicate that following the end of glaciation the continental weathering flux transitioned from being of mixed carbonate and silicate character to a silicate-dominated one. Combined with the effects of primary dolomite formation in the cap dolostones, this caused the ocean to depart from a state of acidification and return to higher pH after climatic amelioration. Differences in the magnitude of stratigraphic isotopic changes across the continental margin of the southern Congo craton shelf point to local influences modifying and amplifying the global signal, which need to be considered in order to avoid overestimation of the worldwide chemical weathering flux. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science Triton ENVELOPE(-55.615,-55.615,49.517,49.517) ENVELOPE(13.995608,15.016164,-19.256564,-20.199167) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Center for Marine Environmental Sciences Event label Finnigan TRITON thermal ionization mass spectrometer (TIMS) Fransfontein Khowarib Lithologic unit/sequence Lithology/composition/facies MARUM NW Namibia Ombaatjie PROFILE Profile sampling Sample code/label SECTION height Uncertainty δ11B δ13C carbonate δ18O δ26Mg δ44/40 Ca |
spellingShingle |
Center for Marine Environmental Sciences Event label Finnigan TRITON thermal ionization mass spectrometer (TIMS) Fransfontein Khowarib Lithologic unit/sequence Lithology/composition/facies MARUM NW Namibia Ombaatjie PROFILE Profile sampling Sample code/label SECTION height Uncertainty δ11B δ13C carbonate δ18O δ26Mg δ44/40 Ca Kasemann, Simone A Pogge von Strandmann, Philip A E Prave, Anthony R Fallick, Anthony E Elliott, Tim Hoffmann, Karl-Heinz (Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
topic_facet |
Center for Marine Environmental Sciences Event label Finnigan TRITON thermal ionization mass spectrometer (TIMS) Fransfontein Khowarib Lithologic unit/sequence Lithology/composition/facies MARUM NW Namibia Ombaatjie PROFILE Profile sampling Sample code/label SECTION height Uncertainty δ11B δ13C carbonate δ18O δ26Mg δ44/40 Ca |
description |
A marked ocean acidification event and elevated atmospheric carbon dioxide concentrations following the extreme environmental conditions of the younger Cryogenian glaciation have been inferred from boron isotope measurements. Calcium and magnesium isotope analyses offer additional insights into the processes occurring during this time. Data from Neoproterozoic sections in Namibia indicate that following the end of glaciation the continental weathering flux transitioned from being of mixed carbonate and silicate character to a silicate-dominated one. Combined with the effects of primary dolomite formation in the cap dolostones, this caused the ocean to depart from a state of acidification and return to higher pH after climatic amelioration. Differences in the magnitude of stratigraphic isotopic changes across the continental margin of the southern Congo craton shelf point to local influences modifying and amplifying the global signal, which need to be considered in order to avoid overestimation of the worldwide chemical weathering flux. |
format |
Dataset |
author |
Kasemann, Simone A Pogge von Strandmann, Philip A E Prave, Anthony R Fallick, Anthony E Elliott, Tim Hoffmann, Karl-Heinz |
author_facet |
Kasemann, Simone A Pogge von Strandmann, Philip A E Prave, Anthony R Fallick, Anthony E Elliott, Tim Hoffmann, Karl-Heinz |
author_sort |
Kasemann, Simone A |
title |
(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
title_short |
(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
title_full |
(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
title_fullStr |
(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
title_full_unstemmed |
(Table 1) Boron, carbon, magnesium and calcium isotope data, post-Marinoan Neoproterozoic carbonate sections, Namibia |
title_sort |
(table 1) boron, carbon, magnesium and calcium isotope data, post-marinoan neoproterozoic carbonate sections, namibia |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.833928 https://doi.org/10.1594/PANGAEA.833928 |
op_coverage |
MEDIAN LATITUDE: -19.586229 * MEDIAN LONGITUDE: 14.336760 * SOUTH-BOUND LATITUDE: -20.199167 * WEST-BOUND LONGITUDE: 13.995608 * NORTH-BOUND LATITUDE: -19.256564 * EAST-BOUND LONGITUDE: 15.016164 * MINIMUM SECTION, height: 0.0 m * MAXIMUM SECTION, height: 300.3 m |
long_lat |
ENVELOPE(-55.615,-55.615,49.517,49.517) ENVELOPE(13.995608,15.016164,-19.256564,-20.199167) |
geographic |
Triton |
geographic_facet |
Triton |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Kasemann, Simone A; Pogge von Strandmann, Philip A E; Prave, Anthony R; Fallick, Anthony E; Elliott, Tim; Hoffmann, Karl-Heinz (2014): Continental weathering following a Cryogenian glaciation: Evidence from calcium and magnesium isotopes. Earth and Planetary Science Letters, 396, 66-77, https://doi.org/10.1016/j.epsl.2014.03.048 |
op_relation |
Kasemann, Simone A; Hawkesworth, Chris J; Prave, Anthony R; Fallick, Anthony E; Pearson, Paul N (2005): Boron and calcium isotope composition in Neoproterozoic carbonate rocks from Namibia: evidence for extreme environmental change. Earth and Planetary Science Letters, 231(1-2), 73-86, https://doi.org/10.1016/j.epsl.2004.12.006 Kasemann, Simone A; Prave, Anthony R; Fallick, Anthony E; Hawkesworth, Chris J; Hoffmann, Karl-Heinz (2010): Neoproterozoic ice ages, boron isotopes, and ocean acidification: Implications for a snowball Earth. Geology, 38(9), 775-778, https://doi.org/10.1130/G30851.1 https://doi.pangaea.de/10.1594/PANGAEA.833928 https://doi.org/10.1594/PANGAEA.833928 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.833928 https://doi.org/10.1016/j.epsl.2014.03.048 https://doi.org/10.1016/j.epsl.2004.12.006 https://doi.org/10.1130/G30851.1 |
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