Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments
As demonstrated in earlier works, quantitative grain shape analysis has revealed to be a strong proxy for determining sediment transport history and depositional environments. MorpheoLV, devoted to the calculation of roughness coefficients from pictures of unique clastic sediment grains using Fourie...
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ftdoajarticles:oai:doaj.org/article:23c734ec6efb49eba6e3f36ad6f95b84 2023-05-15T13:36:31+02:00 Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments Charpentier Isabelle Staszyc Alicia B. Wellner Julia S. Alejandro Vanessa 2017-01-01T00:00:00Z https://doi.org/10.1051/epjconf/201714014003 https://doaj.org/article/23c734ec6efb49eba6e3f36ad6f95b84 EN eng EDP Sciences https://doi.org/10.1051/epjconf/201714014003 https://doaj.org/toc/2100-014X 2100-014X doi:10.1051/epjconf/201714014003 https://doaj.org/article/23c734ec6efb49eba6e3f36ad6f95b84 EPJ Web of Conferences, Vol 140, p 14003 (2017) Physics QC1-999 article 2017 ftdoajarticles https://doi.org/10.1051/epjconf/201714014003 2022-12-31T15:29:18Z As demonstrated in earlier works, quantitative grain shape analysis has revealed to be a strong proxy for determining sediment transport history and depositional environments. MorpheoLV, devoted to the calculation of roughness coefficients from pictures of unique clastic sediment grains using Fourier analysis, drives computations for a collection of samples of grain images. This process may be applied to sedimentary deposits assuming core/interval/image archives for the storage of samples collected along depth. This study uses a 25.8 m jumbo piston core, NBP1203 JPC36, taken from a ~100 m thick sedimentary drift deposit from Perseverance Drift on the northern Antarctic Peninsula continental shelf. Changes in ocean and ice conditions throughout the Holocene recorded in this sedimentary archive can be assessed by studying grain shape, grain texture, and other proxies. Ninety six intervals were sampled and a total of 2319 individual particle images were used. Microtextures of individual grains observed by SEM show a very high abundance of authigenically precipitated silica that obscures the original grain shape. Grain roughness, computed along depth with MorpheoLV, only shows small variation confirming the qualitative observation deduced from the SEM. Despite this, trends can be seen confirming the reliability of MorpheoLV as a tool for quantitative grain shape analysis. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Perseverance ENVELOPE(162.200,162.200,-76.800,-76.800) EPJ Web of Conferences 140 14003 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 |
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Physics QC1-999 Charpentier Isabelle Staszyc Alicia B. Wellner Julia S. Alejandro Vanessa Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
topic_facet |
Physics QC1-999 |
description |
As demonstrated in earlier works, quantitative grain shape analysis has revealed to be a strong proxy for determining sediment transport history and depositional environments. MorpheoLV, devoted to the calculation of roughness coefficients from pictures of unique clastic sediment grains using Fourier analysis, drives computations for a collection of samples of grain images. This process may be applied to sedimentary deposits assuming core/interval/image archives for the storage of samples collected along depth. This study uses a 25.8 m jumbo piston core, NBP1203 JPC36, taken from a ~100 m thick sedimentary drift deposit from Perseverance Drift on the northern Antarctic Peninsula continental shelf. Changes in ocean and ice conditions throughout the Holocene recorded in this sedimentary archive can be assessed by studying grain shape, grain texture, and other proxies. Ninety six intervals were sampled and a total of 2319 individual particle images were used. Microtextures of individual grains observed by SEM show a very high abundance of authigenically precipitated silica that obscures the original grain shape. Grain roughness, computed along depth with MorpheoLV, only shows small variation confirming the qualitative observation deduced from the SEM. Despite this, trends can be seen confirming the reliability of MorpheoLV as a tool for quantitative grain shape analysis. |
format |
Article in Journal/Newspaper |
author |
Charpentier Isabelle Staszyc Alicia B. Wellner Julia S. Alejandro Vanessa |
author_facet |
Charpentier Isabelle Staszyc Alicia B. Wellner Julia S. Alejandro Vanessa |
author_sort |
Charpentier Isabelle |
title |
Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
title_short |
Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
title_full |
Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
title_fullStr |
Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
title_full_unstemmed |
Quantifying grain shape with MorpheoLV: A case study using Holocene glacial marine sediments |
title_sort |
quantifying grain shape with morpheolv: a case study using holocene glacial marine sediments |
publisher |
EDP Sciences |
publishDate |
2017 |
url |
https://doi.org/10.1051/epjconf/201714014003 https://doaj.org/article/23c734ec6efb49eba6e3f36ad6f95b84 |
long_lat |
ENVELOPE(162.200,162.200,-76.800,-76.800) |
geographic |
Antarctic Antarctic Peninsula Perseverance |
geographic_facet |
Antarctic Antarctic Peninsula Perseverance |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
EPJ Web of Conferences, Vol 140, p 14003 (2017) |
op_relation |
https://doi.org/10.1051/epjconf/201714014003 https://doaj.org/toc/2100-014X 2100-014X doi:10.1051/epjconf/201714014003 https://doaj.org/article/23c734ec6efb49eba6e3f36ad6f95b84 |
op_doi |
https://doi.org/10.1051/epjconf/201714014003 |
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EPJ Web of Conferences |
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140 |
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14003 |
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