Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey)
Lake Van sediment cores from the Ahlat Ridge and Northern Basin drill sites of the ICDP project PALEOVAN contain a wealth of information about past environmental processes. The sedimentary sequence was dated using climatostratigraphic alignment, varve chronology, tephrostratigraphy, argon-argon sing...
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Online Access: | https://doi.org/10.1016/j.quascirev.2014.04.008 |
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fteawag:oai:dora:eawag_7705 2024-09-15T18:04:52+00:00 Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) Stockhecke, Mona Kwiecien, Ola Vigliotti, Luigi Anselmetti, Flavio S. Beer, Jürg Çağatay, M. Namik Channell, James E.T. Kipfer, Rolf Lachner, Johannes Litt, Thomas Pickarski, Nadine Sturm, Michael 2014 https://doi.org/10.1016/j.quascirev.2014.04.008 eng eng Elsevier Quaternary Science Reviews--Quat. Sci. Rev.--journals:2468--0277-3791-- eawag:7705 journal id: journals:2468 issn: 0277-3791 e-issn: ut: 000345471400002 local: 16837 scopus: 2-s2.0-84909639499 doi:10.1016/j.quascirev.2014.04.008 uri: pmid: ICDP project PALEOVAN long terrestrial paleoenvironmental records climatostratigraphic alignment radiometric dating tephrostratigraphy magnetostratigraphy Text Journal Article 2014 fteawag https://doi.org/10.1016/j.quascirev.2014.04.008 2024-08-05T03:04:28Z Lake Van sediment cores from the Ahlat Ridge and Northern Basin drill sites of the ICDP project PALEOVAN contain a wealth of information about past environmental processes. The sedimentary sequence was dated using climatostratigraphic alignment, varve chronology, tephrostratigraphy, argon-argon single-crystal dating, radiocarbon dating, magnetostratigraphy, and cosmogenic nuclides. Based on the lithostratigraphic framework, the different age constraints are compiled and a robust and precise chronology of the 600,000 year-old Lake Van record is constructed. Proxy records of total organic carbon content and sediment color, together with the calcium/potassium-ratios and arboreal pollen percentages of the 166-m-long event-corrected Ahlat Ridge record, mimic the Greenland isotope stratotype (NGRIP). Therefore, the proxy records are systematically aligned to the onsets of interstadials reflected in the NGRIP and synthesized Greenland ice-core stratigraphy. The chronology is constructed using 49 age control points derived from visual synchronization with the Greenland ice-core stratigraphy using the GICC05 timescale, an absolutely-dated speleothem timescale (e.g., Hulu, Sanbao, Linzhu cave) and the Epica Dome C timescale. In addition, the uppermost part of the sequence is complemented with four ages from Holocene varve chronology and three calibrated radiocarbon ages. Furthermore, nine argon-argon ages and a comparison of the relative paleointensity record of the magnetic field with reference curve PISO-1500 confirm the accuracy of the age model. Also the identification of the Laschamp event via measurements of 10 Be in the sediment confirms the presented age model. The chronology of the Ahlat Ridge record is transferred to the 79-m-long event-corrected composite record from the Northern Basin and supplemented by additional radiocarbon dating on organic marco-remains. The basal age of the Northern Basin record is estimated at ∼90 ka. The variations of the time series of total organic carbon content, the Ca/K ratio, and ... Article in Journal/Newspaper EPICA Greenland Greenland ice core ice core NGRIP DORA Eawag Quaternary Science Reviews 104 8 17 |
institution |
Open Polar |
collection |
DORA Eawag |
op_collection_id |
fteawag |
language |
English |
topic |
ICDP project PALEOVAN long terrestrial paleoenvironmental records climatostratigraphic alignment radiometric dating tephrostratigraphy magnetostratigraphy |
spellingShingle |
ICDP project PALEOVAN long terrestrial paleoenvironmental records climatostratigraphic alignment radiometric dating tephrostratigraphy magnetostratigraphy Stockhecke, Mona Kwiecien, Ola Vigliotti, Luigi Anselmetti, Flavio S. Beer, Jürg Çağatay, M. Namik Channell, James E.T. Kipfer, Rolf Lachner, Johannes Litt, Thomas Pickarski, Nadine Sturm, Michael Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
topic_facet |
ICDP project PALEOVAN long terrestrial paleoenvironmental records climatostratigraphic alignment radiometric dating tephrostratigraphy magnetostratigraphy |
description |
Lake Van sediment cores from the Ahlat Ridge and Northern Basin drill sites of the ICDP project PALEOVAN contain a wealth of information about past environmental processes. The sedimentary sequence was dated using climatostratigraphic alignment, varve chronology, tephrostratigraphy, argon-argon single-crystal dating, radiocarbon dating, magnetostratigraphy, and cosmogenic nuclides. Based on the lithostratigraphic framework, the different age constraints are compiled and a robust and precise chronology of the 600,000 year-old Lake Van record is constructed. Proxy records of total organic carbon content and sediment color, together with the calcium/potassium-ratios and arboreal pollen percentages of the 166-m-long event-corrected Ahlat Ridge record, mimic the Greenland isotope stratotype (NGRIP). Therefore, the proxy records are systematically aligned to the onsets of interstadials reflected in the NGRIP and synthesized Greenland ice-core stratigraphy. The chronology is constructed using 49 age control points derived from visual synchronization with the Greenland ice-core stratigraphy using the GICC05 timescale, an absolutely-dated speleothem timescale (e.g., Hulu, Sanbao, Linzhu cave) and the Epica Dome C timescale. In addition, the uppermost part of the sequence is complemented with four ages from Holocene varve chronology and three calibrated radiocarbon ages. Furthermore, nine argon-argon ages and a comparison of the relative paleointensity record of the magnetic field with reference curve PISO-1500 confirm the accuracy of the age model. Also the identification of the Laschamp event via measurements of 10 Be in the sediment confirms the presented age model. The chronology of the Ahlat Ridge record is transferred to the 79-m-long event-corrected composite record from the Northern Basin and supplemented by additional radiocarbon dating on organic marco-remains. The basal age of the Northern Basin record is estimated at ∼90 ka. The variations of the time series of total organic carbon content, the Ca/K ratio, and ... |
format |
Article in Journal/Newspaper |
author |
Stockhecke, Mona Kwiecien, Ola Vigliotti, Luigi Anselmetti, Flavio S. Beer, Jürg Çağatay, M. Namik Channell, James E.T. Kipfer, Rolf Lachner, Johannes Litt, Thomas Pickarski, Nadine Sturm, Michael |
author_facet |
Stockhecke, Mona Kwiecien, Ola Vigliotti, Luigi Anselmetti, Flavio S. Beer, Jürg Çağatay, M. Namik Channell, James E.T. Kipfer, Rolf Lachner, Johannes Litt, Thomas Pickarski, Nadine Sturm, Michael |
author_sort |
Stockhecke, Mona |
title |
Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
title_short |
Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
title_full |
Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
title_fullStr |
Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
title_full_unstemmed |
Chronostratigraphy of the 600,000 year old continental record of Lake Van (Turkey) |
title_sort |
chronostratigraphy of the 600,000 year old continental record of lake van (turkey) |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://doi.org/10.1016/j.quascirev.2014.04.008 |
genre |
EPICA Greenland Greenland ice core ice core NGRIP |
genre_facet |
EPICA Greenland Greenland ice core ice core NGRIP |
op_relation |
Quaternary Science Reviews--Quat. Sci. Rev.--journals:2468--0277-3791-- eawag:7705 journal id: journals:2468 issn: 0277-3791 e-issn: ut: 000345471400002 local: 16837 scopus: 2-s2.0-84909639499 doi:10.1016/j.quascirev.2014.04.008 uri: pmid: |
op_doi |
https://doi.org/10.1016/j.quascirev.2014.04.008 |
container_title |
Quaternary Science Reviews |
container_volume |
104 |
container_start_page |
8 |
op_container_end_page |
17 |
_version_ |
1810442477002293248 |