Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits
The article provides information on the outcrops of the Neogene-Quaternary riverine sediments of the North-Western Black Sea coastal area. A description of five outcrops of fluvial deposits located on the territory of the modern basins of the Dniester and Prut rivers is given. Based on the granulome...
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E.T.S.I de Minas y Energía
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ftunivpmadrid:oai:oa.upm.es:63960 2023-05-15T14:22:54+02:00 Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits Lyubas, A Obada, T Ortíz Menéndez, José Eugenio Torres Pérez-Hidalgo, Trinidad José Kriauciunas, V Nicoara, I Gofarov, M 2019 application/pdf https://oa.upm.es/63960/ eng eng E.T.S.I de Minas y Energía https://aer.pensoft.net/journals.php info:eu-repo/semantics/altIdentifier/doi/10.3897/issn2541-8416.2019.19.2.65 https://oa.upm.es/63960/ https://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess CC-BY-NC-ND Arctic Environmental Research, ISSN 2541-8416, 2019, Vol. 12, No. 2 Geología info:eu-repo/semantics/article Artículo PeerReviewed 2019 ftunivpmadrid https://doi.org/10.3897/issn2541-8416.2019.19.2.65 2022-06-06T18:26:59Z The article provides information on the outcrops of the Neogene-Quaternary riverine sediments of the North-Western Black Sea coastal area. A description of five outcrops of fluvial deposits located on the territory of the modern basins of the Dniester and Prut rivers is given. Based on the granulometric composition of the sediments and the presence in them of the fossil shells of freshwater bivalve mollusks (Bivalvia: Unionoida), an assumption has been made about the characteristics of the ancient river ecosystems of the Dniester and Prut on different Pliocene and Pleistocene time sections. A review of the data in the body of literature on the geological age of the studied outcrops was undertaken. The localities considered provide information on the sedimentation conditions in this region from the Pliocene to the Late Pleistocene. Previously, various approaches were used for dating such rocks and for determining the stratigraphic position of fossil material found in them. The article considers the method of amino acids racemization as one of the approaches. Racemization allows to obtain new data on the stratigraphy of Neogene-Quaternary riverine sediments and to solve the problem of their dating. The sampling principles of carbonate material for the analysis of amino acids from the mollusk shells and features of sample preparation are described. Five amino acids were used: aspartic acid (Asp), glutamic acid (Glu), leucine (Leu), phenylalanine (Phe) and isoleucine (Ile). The D/L ratios were analyzed (amino acid racemization (or AAR) is the interconversion of amino acids from one chiral form (the L – (laevo) amino acids which are the building blocks of proteins) to a mixture of L- and D- (dextro) forms. The extent of racemization is measured by the ratio of D/L isomers (it increases as a function of time and temperature and can be used for geochronology) from the same group of fossils (genera), which were preserved under similar environmental conditions, inorganic geochemistry and thermal histories. Based on the ... Article in Journal/Newspaper Arctic Archivo Digital UPM (Universidad Politécnica de Madrid) Arctic Environmental Research 19 2 65 74 |
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Archivo Digital UPM (Universidad Politécnica de Madrid) |
op_collection_id |
ftunivpmadrid |
language |
English |
topic |
Geología |
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Geología Lyubas, A Obada, T Ortíz Menéndez, José Eugenio Torres Pérez-Hidalgo, Trinidad José Kriauciunas, V Nicoara, I Gofarov, M Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
topic_facet |
Geología |
description |
The article provides information on the outcrops of the Neogene-Quaternary riverine sediments of the North-Western Black Sea coastal area. A description of five outcrops of fluvial deposits located on the territory of the modern basins of the Dniester and Prut rivers is given. Based on the granulometric composition of the sediments and the presence in them of the fossil shells of freshwater bivalve mollusks (Bivalvia: Unionoida), an assumption has been made about the characteristics of the ancient river ecosystems of the Dniester and Prut on different Pliocene and Pleistocene time sections. A review of the data in the body of literature on the geological age of the studied outcrops was undertaken. The localities considered provide information on the sedimentation conditions in this region from the Pliocene to the Late Pleistocene. Previously, various approaches were used for dating such rocks and for determining the stratigraphic position of fossil material found in them. The article considers the method of amino acids racemization as one of the approaches. Racemization allows to obtain new data on the stratigraphy of Neogene-Quaternary riverine sediments and to solve the problem of their dating. The sampling principles of carbonate material for the analysis of amino acids from the mollusk shells and features of sample preparation are described. Five amino acids were used: aspartic acid (Asp), glutamic acid (Glu), leucine (Leu), phenylalanine (Phe) and isoleucine (Ile). The D/L ratios were analyzed (amino acid racemization (or AAR) is the interconversion of amino acids from one chiral form (the L – (laevo) amino acids which are the building blocks of proteins) to a mixture of L- and D- (dextro) forms. The extent of racemization is measured by the ratio of D/L isomers (it increases as a function of time and temperature and can be used for geochronology) from the same group of fossils (genera), which were preserved under similar environmental conditions, inorganic geochemistry and thermal histories. Based on the ... |
format |
Article in Journal/Newspaper |
author |
Lyubas, A Obada, T Ortíz Menéndez, José Eugenio Torres Pérez-Hidalgo, Trinidad José Kriauciunas, V Nicoara, I Gofarov, M |
author_facet |
Lyubas, A Obada, T Ortíz Menéndez, José Eugenio Torres Pérez-Hidalgo, Trinidad José Kriauciunas, V Nicoara, I Gofarov, M |
author_sort |
Lyubas, A |
title |
Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
title_short |
Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
title_full |
Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
title_fullStr |
Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
title_full_unstemmed |
Subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
title_sort |
subfossil freshwater bivalve mollusk shells present data on stratigraphy of dniester and prut riverine deposits |
publisher |
E.T.S.I de Minas y Energía |
publishDate |
2019 |
url |
https://oa.upm.es/63960/ |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Arctic Environmental Research, ISSN 2541-8416, 2019, Vol. 12, No. 2 |
op_relation |
https://aer.pensoft.net/journals.php info:eu-repo/semantics/altIdentifier/doi/10.3897/issn2541-8416.2019.19.2.65 https://oa.upm.es/63960/ |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.3897/issn2541-8416.2019.19.2.65 |
container_title |
Arctic Environmental Research |
container_volume |
19 |
container_issue |
2 |
container_start_page |
65 |
op_container_end_page |
74 |
_version_ |
1766295415133569024 |