New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia
We present the results of an optical microscopy, cathodoluminoscopy and isotopic study on nine glendonite concretions (calcite pseudomorphs replacing metastable hexahydrate ikaite) from Lower-Middle Jurassic sediments of Northeast Russia (Anabar Bay and Lena River region). Glendonite concretions are...
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ftdatacite:10.6084/m9.figshare.9918512 2023-05-15T13:24:30+02:00 New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia Kseniia Y. Vasileva Rogov, Mikhail A. Ershova, Victoria B. Pokrovsky, Boris G. 2019 https://dx.doi.org/10.6084/m9.figshare.9918512 https://tandf.figshare.com/articles/journal_contribution/New_results_of_stable_isotope_and_petrographic_studies_of_Jurassic_glendonites_from_Siberia/9918512 unknown Taylor & Francis https://dx.doi.org/10.1080/11035897.2019.1641549 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Space Science Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Text article-journal Journal contribution ScholarlyArticle 2019 ftdatacite https://doi.org/10.6084/m9.figshare.9918512 https://doi.org/10.1080/11035897.2019.1641549 2021-11-05T12:55:41Z We present the results of an optical microscopy, cathodoluminoscopy and isotopic study on nine glendonite concretions (calcite pseudomorphs replacing metastable hexahydrate ikaite) from Lower-Middle Jurassic sediments of Northeast Russia (Anabar Bay and Lena River region). Glendonite concretions are mainly found within Late Pliensbachian, Toarcian, Aalenian, Bajocian and Lower Bathonian clastic sediments, correlating to episodes of global climatic cooling as determined by independent paleoclimate proxy data. Stable carbon and oxygen isotopic values of glendonite concretions suggest that the primary source of carbon was derived from diagenetically altered organic matter, and the source of oxygen was from seawater. The secondary diagenetic cement is characterized by a significantly lighter δ 18 O and significantly heavier δ 13 C signature than the isotopic characteristics of the bulk rock glendonite concretion. This secondary diagenetic cement is thought to have precipitated rapidly during burial diagenesis and since it occupies a significant volume of the glendonite concretion, it has the potential to significantly influence the isotopic composition of bulk rock glendonites. Text Anabar Bay lena river Siberia DataCite Metadata Store (German National Library of Science and Technology) Anabar ENVELOPE(113.624,113.624,73.286,73.286) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Space Science Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified |
spellingShingle |
Space Science Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Kseniia Y. Vasileva Rogov, Mikhail A. Ershova, Victoria B. Pokrovsky, Boris G. New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
topic_facet |
Space Science Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified |
description |
We present the results of an optical microscopy, cathodoluminoscopy and isotopic study on nine glendonite concretions (calcite pseudomorphs replacing metastable hexahydrate ikaite) from Lower-Middle Jurassic sediments of Northeast Russia (Anabar Bay and Lena River region). Glendonite concretions are mainly found within Late Pliensbachian, Toarcian, Aalenian, Bajocian and Lower Bathonian clastic sediments, correlating to episodes of global climatic cooling as determined by independent paleoclimate proxy data. Stable carbon and oxygen isotopic values of glendonite concretions suggest that the primary source of carbon was derived from diagenetically altered organic matter, and the source of oxygen was from seawater. The secondary diagenetic cement is characterized by a significantly lighter δ 18 O and significantly heavier δ 13 C signature than the isotopic characteristics of the bulk rock glendonite concretion. This secondary diagenetic cement is thought to have precipitated rapidly during burial diagenesis and since it occupies a significant volume of the glendonite concretion, it has the potential to significantly influence the isotopic composition of bulk rock glendonites. |
format |
Text |
author |
Kseniia Y. Vasileva Rogov, Mikhail A. Ershova, Victoria B. Pokrovsky, Boris G. |
author_facet |
Kseniia Y. Vasileva Rogov, Mikhail A. Ershova, Victoria B. Pokrovsky, Boris G. |
author_sort |
Kseniia Y. Vasileva |
title |
New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
title_short |
New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
title_full |
New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
title_fullStr |
New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
title_full_unstemmed |
New results of stable isotope and petrographic studies of Jurassic glendonites from Siberia |
title_sort |
new results of stable isotope and petrographic studies of jurassic glendonites from siberia |
publisher |
Taylor & Francis |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.9918512 https://tandf.figshare.com/articles/journal_contribution/New_results_of_stable_isotope_and_petrographic_studies_of_Jurassic_glendonites_from_Siberia/9918512 |
long_lat |
ENVELOPE(113.624,113.624,73.286,73.286) |
geographic |
Anabar |
geographic_facet |
Anabar |
genre |
Anabar Bay lena river Siberia |
genre_facet |
Anabar Bay lena river Siberia |
op_relation |
https://dx.doi.org/10.1080/11035897.2019.1641549 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.9918512 https://doi.org/10.1080/11035897.2019.1641549 |
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1766380006452232192 |