A new formal subdivision of the Holocene Series/Epoch in Estonia
Over the past 25 years since the ratification of the last official Holocene Stratigraphic Chart in Estonia, the stratigraphic framework of global Quaternary geology has significantly progressed. The Pleistocene/Holocene boundary is defined in the NGRIP2 ice core from Greenland, with an age of 11 700...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Estonian Academy Publishers
2020-11-01
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| Series: | Estonian Journal of Earth Sciences |
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| Online Access: | https://kirj.ee/wp-content/plugins/kirj/pub/earth-4-2020-269-280_20201111124223.pdf |
| _version_ | 1817999592949547008 |
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| author | Tiit Hang Siim Veski Jüri Vassiljev Anneli Poska Aivar Kriiska Atko Heinsalu |
| author_facet | Tiit Hang Siim Veski Jüri Vassiljev Anneli Poska Aivar Kriiska Atko Heinsalu |
| author_sort | Tiit Hang |
| collection | DOAJ |
| description | Over the past 25 years since the ratification of the last official Holocene Stratigraphic Chart in Estonia, the stratigraphic framework of global Quaternary geology has significantly progressed. The Pleistocene/Holocene boundary is defined in the NGRIP2 ice core from Greenland, with an age of 11 700 calendar yr b2k (before AD 2000). The International Subcommission on Quaternary Stratigraphy developed a formal tripartite stratigraphical subdivision of the Holocene into the Greenlandian, Northgrippian and Meghalayan stages/ages, each supported by a Global Boundary Stratotype Section and Point (GSSP). All three GSSPs are defined on the basis of geochemical markers reflecting abrupt global climatic events dated with high accuracy and serving as a reliable foundation for cross correlation. In the light of this development we present a new formal subdivision for the Holocene in Estonia. The new chart is climatostratigraphic with tripartite subdivision. The chronological boundaries and corresponding names for the stages/ages are aligned with the International Holocene Stratigraphic Chart. The correlation is achieved using synchronous and significant global climatic oscillation events, preserved in Estonian Holocene sedimentary proxy archives. The correlation relies on the direct dating of these Holocene sedimentary successions, particularly AMS 14C dating, lake sediment varve counts, etc. The subdivision of the Baltic Sea sediments in the new Holocene stratigraphic chart is based on the internationally recognized stages in the Baltic Sea history and the chronology of their boundaries. Long-term traditions in geoarchaeological studies in Estonia require a common understanding of the chronological background. Therefore, the subdivision of the Estonian Prehistoric period was included in the new Holocene Stratigraphic Chart of Estonia which was approved by the Estonian Commission on Stratigraphy on 15 January 2020. |
| first_indexed | 2024-04-14T03:11:00Z |
| format | Article |
| id | doaj.art-f44f13dd241d4e499c169d548a94ff58 |
| institution | Directory Open Access Journal |
| issn | 1736-4728 1736-7557 |
| language | English |
| last_indexed | 2024-04-14T03:11:00Z |
| publishDate | 2020-11-01 |
| publisher | Estonian Academy Publishers |
| record_format | Article |
| series | Estonian Journal of Earth Sciences |
| spelling | doaj.art-f44f13dd241d4e499c169d548a94ff582022-12-22T02:15:36ZengEstonian Academy PublishersEstonian Journal of Earth Sciences1736-47281736-75572020-11-0169426928010.3176/earth.2020.1510.3176/earth.2020.15A new formal subdivision of the Holocene Series/Epoch in EstoniaTiit Hang0Siim Veski1Jüri Vassiljev2Anneli Poska3Aivar Kriiska4Atko Heinsalu5Institute of Ecology and Earth Sciences, University of Tartu, Ravila 14A, 50411 Tartu, EstoniaDepartment of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; veski@gi.eeDepartment of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; vassilje@gi.eeDepartment of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaInstitute of History and Archaeology, University of Tartu, 18 Ülikooli St., 50090 Tartu, Es-tonia; aivar.kriiska@ut.eeDepartment of Geology, Tallinn University of Technology, 5 Ehitajate tee St., 19086 Tallinn, Estonia; atko.heinsalu@ttu.eeOver the past 25 years since the ratification of the last official Holocene Stratigraphic Chart in Estonia, the stratigraphic framework of global Quaternary geology has significantly progressed. The Pleistocene/Holocene boundary is defined in the NGRIP2 ice core from Greenland, with an age of 11 700 calendar yr b2k (before AD 2000). The International Subcommission on Quaternary Stratigraphy developed a formal tripartite stratigraphical subdivision of the Holocene into the Greenlandian, Northgrippian and Meghalayan stages/ages, each supported by a Global Boundary Stratotype Section and Point (GSSP). All three GSSPs are defined on the basis of geochemical markers reflecting abrupt global climatic events dated with high accuracy and serving as a reliable foundation for cross correlation. In the light of this development we present a new formal subdivision for the Holocene in Estonia. The new chart is climatostratigraphic with tripartite subdivision. The chronological boundaries and corresponding names for the stages/ages are aligned with the International Holocene Stratigraphic Chart. The correlation is achieved using synchronous and significant global climatic oscillation events, preserved in Estonian Holocene sedimentary proxy archives. The correlation relies on the direct dating of these Holocene sedimentary successions, particularly AMS 14C dating, lake sediment varve counts, etc. The subdivision of the Baltic Sea sediments in the new Holocene stratigraphic chart is based on the internationally recognized stages in the Baltic Sea history and the chronology of their boundaries. Long-term traditions in geoarchaeological studies in Estonia require a common understanding of the chronological background. Therefore, the subdivision of the Estonian Prehistoric period was included in the new Holocene Stratigraphic Chart of Estonia which was approved by the Estonian Commission on Stratigraphy on 15 January 2020.https://kirj.ee/wp-content/plugins/kirj/pub/earth-4-2020-269-280_20201111124223.pdfestoniaholocenegreenlandianmeghalayannorthgrippianstratigraphic subdivision. |
| spellingShingle | Tiit Hang Siim Veski Jüri Vassiljev Anneli Poska Aivar Kriiska Atko Heinsalu A new formal subdivision of the Holocene Series/Epoch in Estonia Estonian Journal of Earth Sciences estonia holocene greenlandian meghalayan northgrippian stratigraphic subdivision. |
| title | A new formal subdivision of the Holocene Series/Epoch in Estonia |
| title_full | A new formal subdivision of the Holocene Series/Epoch in Estonia |
| title_fullStr | A new formal subdivision of the Holocene Series/Epoch in Estonia |
| title_full_unstemmed | A new formal subdivision of the Holocene Series/Epoch in Estonia |
| title_short | A new formal subdivision of the Holocene Series/Epoch in Estonia |
| title_sort | new formal subdivision of the holocene series epoch in estonia |
| topic | estonia holocene greenlandian meghalayan northgrippian stratigraphic subdivision. |
| url | https://kirj.ee/wp-content/plugins/kirj/pub/earth-4-2020-269-280_20201111124223.pdf |
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