Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data
In this thesis, downhole logging data from Lake Van (Turkey) and Lake Ohrid (Macedonia/Albania) was analyzed to improve paleoenvironmental studies. The sediments of Lake Van (clayey silts and tephra) were differentiated by downhole logging and XRF scanning data. Spectral gamma ray (SGR), zirconium i...
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Universität Bremen
2015
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/898 2023-05-15T16:29:23+02:00 Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data Klimatische Indikationen und Sedimenteigenschaften des Lake Van (Türkei) und des Lake Ohrid (Mazedonien / Albanien) aus der Interpretation von Bohrlochmessungen Baumgarten, Henrike Zolitschka, Bernd De Wall, Helga 2015-07-16 application/pdf https://media.suub.uni-bremen.de/handle/elib/898 https://nbn-resolving.org/urn:nbn:de:gbv:46-00104663-14 eng eng Universität Bremen FB5 Geowissenschaften https://media.suub.uni-bremen.de/handle/elib/898 urn:nbn:de:gbv:46-00104663-14 info:eu-repo/semantics/openAccess downhole logging lake sediments paleoenvironmental proxies cyclostratigraphy ICDP 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2015 ftsubbremen 2022-11-09T07:09:27Z In this thesis, downhole logging data from Lake Van (Turkey) and Lake Ohrid (Macedonia/Albania) was analyzed to improve paleoenvironmental studies. The sediments of Lake Van (clayey silts and tephra) were differentiated by downhole logging and XRF scanning data. Spectral gamma ray (SGR), zirconium intensities and magnetic susceptibility are most useful to separate the lake facies from tephra. The U data from SGR was used for cyclostratigraphic studies to estimate the duration of deposition. The sediments were deposited over a period of 587 ka and the results agree with core interpretations. High-frequency cycles were correlated with interstadials from the North Greenland Delta-18-O record (NGRIP) for the past 75 ka. Gamma ray (GR) and potassium (K) fluctuations obtained in the sediments of Lake Ohrid correlate with variations in Delta-18-O values from the global benthic isotope stack LR04. In combination with eight tephrostratigraphical tie points, a robust age model over the past 630 ka was established. Doctoral or Postdoctoral Thesis Greenland NGRIP North Greenland Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Greenland |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
downhole logging lake sediments paleoenvironmental proxies cyclostratigraphy ICDP 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
downhole logging lake sediments paleoenvironmental proxies cyclostratigraphy ICDP 550 550 Earth sciences and geology ddc:550 Baumgarten, Henrike Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
topic_facet |
downhole logging lake sediments paleoenvironmental proxies cyclostratigraphy ICDP 550 550 Earth sciences and geology ddc:550 |
description |
In this thesis, downhole logging data from Lake Van (Turkey) and Lake Ohrid (Macedonia/Albania) was analyzed to improve paleoenvironmental studies. The sediments of Lake Van (clayey silts and tephra) were differentiated by downhole logging and XRF scanning data. Spectral gamma ray (SGR), zirconium intensities and magnetic susceptibility are most useful to separate the lake facies from tephra. The U data from SGR was used for cyclostratigraphic studies to estimate the duration of deposition. The sediments were deposited over a period of 587 ka and the results agree with core interpretations. High-frequency cycles were correlated with interstadials from the North Greenland Delta-18-O record (NGRIP) for the past 75 ka. Gamma ray (GR) and potassium (K) fluctuations obtained in the sediments of Lake Ohrid correlate with variations in Delta-18-O values from the global benthic isotope stack LR04. In combination with eight tephrostratigraphical tie points, a robust age model over the past 630 ka was established. |
author2 |
Zolitschka, Bernd De Wall, Helga |
format |
Doctoral or Postdoctoral Thesis |
author |
Baumgarten, Henrike |
author_facet |
Baumgarten, Henrike |
author_sort |
Baumgarten, Henrike |
title |
Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
title_short |
Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
title_full |
Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
title_fullStr |
Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
title_full_unstemmed |
Climate implications and lithological characteristics of sediments from Lake Van (Turkey) and Lake Ohrid (Macedonia / Albania) obtained from downhole logging data |
title_sort |
climate implications and lithological characteristics of sediments from lake van (turkey) and lake ohrid (macedonia / albania) obtained from downhole logging data |
publisher |
Universität Bremen |
publishDate |
2015 |
url |
https://media.suub.uni-bremen.de/handle/elib/898 https://nbn-resolving.org/urn:nbn:de:gbv:46-00104663-14 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland NGRIP North Greenland |
genre_facet |
Greenland NGRIP North Greenland |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/898 urn:nbn:de:gbv:46-00104663-14 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766019079053770752 |