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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ftunivmilriv:oai:ojs.riviste.unimi.it:article/10193 2023-05-15T13:44:04+02:00 A SAMPLING STRATEGY FOR RECENT AND FOSSIL BRACHIOPODS: SELECTING THE OPTIMAL SHELL SEGMENT FOR GEOCHEMICAL ANALYSES ROMANIN, MARCO CRIPPA, GAIA YE, FACHENG BRAND, UWE BITNER, MARIA ALEKSANDRA GASPARD, DANIÈLE HÄUSSERMANN, VERENA LAUDIEN, JÜRGEN 2018-04-18 application/pdf https://riviste.unimi.it/index.php/RIPS/article/view/10193 https://doi.org/10.13130/2039-4942/10193 eng eng Università degli Studi di Milano https://riviste.unimi.it/index.php/RIPS/article/view/10193/9530 https://riviste.unimi.it/index.php/RIPS/article/view/10193/11438 https://riviste.unimi.it/index.php/RIPS/article/view/10193 doi:10.13130/2039-4942/10193 Copyright (c) 2018 MARCO ROMANIN, GAIA CRIPPA, FACHENG YE, UWE BRAND, MARIA ALEKSANDRA BITNER, DANIÈLE GASPARD, VERENA HÄUSSERMANN, JÜRGEN LAUDIEN RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 124 No. 2 (2018) Rivista italiana di Paleontologia e Stratigrafia; V. 124 N. 2 (2018) 2039-4942 0035-6883 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivmilriv https://doi.org/10.13130/2039-4942/10193 2022-02-21T07:13:29Z 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 University of Milan: Riviste UNIMI Indian New Zealand |
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Open Polar |
collection |
University of Milan: Riviste UNIMI |
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ftunivmilriv |
language |
English |
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. |
format |
Article in Journal/Newspaper |
author |
ROMANIN, MARCO CRIPPA, GAIA YE, FACHENG BRAND, UWE BITNER, MARIA ALEKSANDRA GASPARD, DANIÈLE HÄUSSERMANN, VERENA LAUDIEN, JÜRGEN |
spellingShingle |
ROMANIN, MARCO CRIPPA, GAIA YE, FACHENG BRAND, UWE BITNER, MARIA ALEKSANDRA GASPARD, DANIÈLE HÄUSSERMANN, VERENA LAUDIEN, JÜRGEN A SAMPLING STRATEGY FOR RECENT AND FOSSIL BRACHIOPODS: SELECTING THE OPTIMAL SHELL SEGMENT FOR GEOCHEMICAL ANALYSES |
author_facet |
ROMANIN, MARCO CRIPPA, GAIA YE, FACHENG BRAND, UWE BITNER, MARIA ALEKSANDRA GASPARD, DANIÈLE HÄUSSERMANN, VERENA LAUDIEN, JÜRGEN |
author_sort |
ROMANIN, MARCO |
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 |
https://riviste.unimi.it/index.php/RIPS/article/view/10193 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_source |
RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 124 No. 2 (2018) Rivista italiana di Paleontologia e Stratigrafia; V. 124 N. 2 (2018) 2039-4942 0035-6883 |
op_relation |
https://riviste.unimi.it/index.php/RIPS/article/view/10193/9530 https://riviste.unimi.it/index.php/RIPS/article/view/10193/11438 https://riviste.unimi.it/index.php/RIPS/article/view/10193 doi:10.13130/2039-4942/10193 |
op_rights |
Copyright (c) 2018 MARCO ROMANIN, GAIA CRIPPA, FACHENG YE, UWE BRAND, MARIA ALEKSANDRA BITNER, DANIÈLE GASPARD, VERENA HÄUSSERMANN, JÜRGEN LAUDIEN |
op_doi |
https://doi.org/10.13130/2039-4942/10193 |
_version_ |
1766197050966278144 |