A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses
Recent and fossil brachiopod shells have a long record as biomineral archives for (palaeo)climatic and (palaeo)environmental reconstructions, as they lack or exhibit limited vital effects in their calcite shell and generally are quite resistant to diagenetic alteration. Despite this, only few studie...
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Università degli studi di Milano
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Online Access: | http://hdl.handle.net/2434/575818 https://doi.org/10.13130/2039-4942/10193 |
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ftunivmilanoair:oai:air.unimi.it:2434/575818 2024-02-11T09:57:15+01:00 A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses M. Romanin G. Crippa F. Ye U. Brand M. A. Bitner D. Gaspard V. Häussermann J. Laudien M. Romanin G. Crippa F. Ye U. Brand M.A. Bitner D. Gaspard V. Häussermann J. Laudien 2018-07 http://hdl.handle.net/2434/575818 https://doi.org/10.13130/2039-4942/10193 eng eng Università degli studi di Milano info:eu-repo/semantics/altIdentifier/wos/WOS:000435372800003 volume:124 issue:2 firstpage:343 lastpage:359 numberofpages:17 journal:RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA http://hdl.handle.net/2434/575818 doi:10.13130/2039-4942/10193 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85048134189 info:eu-repo/semantics/openAccess microstructure trace element stable isotope brachiopod ontogeny sampling strategy Settore GEO/01 - Paleontologia e Paleoecologia info:eu-repo/semantics/article 2018 ftunivmilanoair https://doi.org/10.13130/2039-4942/10193 2024-01-16T23:33:53Z Recent and fossil brachiopod shells have a long record as biomineral archives for (palaeo)climatic and (palaeo)environmental reconstructions, as they lack or exhibit limited vital effects in their calcite shell and generally are quite resistant to diagenetic alteration. Despite this, only few studies address the issue of identifying the best or optimal part of the shell for geochemical analyses. We investigated the link between ontogeny and geochemical signatures recorded in different parts of the shell. To reach this aim, we analysed the elemental (Ca, Mg, Sr, Na) and stable isotope (δ18O, δ13C) compositions of five recent brachiopod species (Magellania venosa, Liothyrella uva, Aerothyris kerguelensis, Liothyrella neozelanica and Gyphus vitreus), spanning broad geographical and environmental ranges (Chile, Antarctica, Indian Ocean, New Zealand and Italy) and having different shell layer successions (two-layer and three-layer shells). We observed similar patterns in the ventral and dorsal valves of these two groups, but different ontogenetic trends by the two- and three-layer shells in their trace element and stable isotope records. Our investigation led us to conclude that the optimal region to sample for geochemical and isotope analyses is the middle part of the mid-section of the shell, avoiding the primary layer, posterior and anterior parts as well as the outermost part of the secondary layer in recent brachiopods. Also, the outermost and innermost rims of shells should be avoided due to diagenetic impacts on fossil brachiopods. Article in Journal/Newspaper Antarc* Antarctica The University of Milan: Archivio Istituzionale della Ricerca (AIR) Indian New Zealand |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
microstructure trace element stable isotope brachiopod ontogeny sampling strategy Settore GEO/01 - Paleontologia e Paleoecologia |
spellingShingle |
microstructure trace element stable isotope brachiopod ontogeny sampling strategy Settore GEO/01 - Paleontologia e Paleoecologia M. Romanin G. Crippa F. Ye U. Brand M. A. Bitner D. Gaspard V. Häussermann J. Laudien A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
topic_facet |
microstructure trace element stable isotope brachiopod ontogeny sampling strategy Settore GEO/01 - Paleontologia e Paleoecologia |
description |
Recent and fossil brachiopod shells have a long record as biomineral archives for (palaeo)climatic and (palaeo)environmental reconstructions, as they lack or exhibit limited vital effects in their calcite shell and generally are quite resistant to diagenetic alteration. Despite this, only few studies address the issue of identifying the best or optimal part of the shell for geochemical analyses. We investigated the link between ontogeny and geochemical signatures recorded in different parts of the shell. To reach this aim, we analysed the elemental (Ca, Mg, Sr, Na) and stable isotope (δ18O, δ13C) compositions of five recent brachiopod species (Magellania venosa, Liothyrella uva, Aerothyris kerguelensis, Liothyrella neozelanica and Gyphus vitreus), spanning broad geographical and environmental ranges (Chile, Antarctica, Indian Ocean, New Zealand and Italy) and having different shell layer successions (two-layer and three-layer shells). We observed similar patterns in the ventral and dorsal valves of these two groups, but different ontogenetic trends by the two- and three-layer shells in their trace element and stable isotope records. Our investigation led us to conclude that the optimal region to sample for geochemical and isotope analyses is the middle part of the mid-section of the shell, avoiding the primary layer, posterior and anterior parts as well as the outermost part of the secondary layer in recent brachiopods. Also, the outermost and innermost rims of shells should be avoided due to diagenetic impacts on fossil brachiopods. |
author2 |
M. Romanin G. Crippa F. Ye U. Brand M.A. Bitner D. Gaspard V. Häussermann J. Laudien |
format |
Article in Journal/Newspaper |
author |
M. Romanin G. Crippa F. Ye U. Brand M. A. Bitner D. Gaspard V. Häussermann J. Laudien |
author_facet |
M. Romanin G. Crippa F. Ye U. Brand M. A. Bitner D. Gaspard V. Häussermann J. Laudien |
author_sort |
M. Romanin |
title |
A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
title_short |
A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
title_full |
A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
title_fullStr |
A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
title_full_unstemmed |
A sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
title_sort |
sampling strategy for recent and fossil brachiopods : selecting the optimal shell segment for geochemical analyses |
publisher |
Università degli studi di Milano |
publishDate |
2018 |
url |
http://hdl.handle.net/2434/575818 https://doi.org/10.13130/2039-4942/10193 |
geographic |
Indian New Zealand |
geographic_facet |
Indian New Zealand |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000435372800003 volume:124 issue:2 firstpage:343 lastpage:359 numberofpages:17 journal:RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA http://hdl.handle.net/2434/575818 doi:10.13130/2039-4942/10193 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85048134189 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.13130/2039-4942/10193 |
_version_ |
1790609537145765888 |