Application of the OSL dating for stratigraphic correlation of Late Weichselian and Holocene sediments in the Lithuanian Maritime Region

2001 ◽  
Vol 20 (5-9) ◽  
pp. 767-772 ◽  
Author(s):  
A. Bitinas ◽  
A. Damušyte ◽  
G. Hütt ◽  
I. Jaek ◽  
M. Kabailiene
Keyword(s):  
Osl Dating ◽  
Stratigraphic Correlation ◽  
Holocene Sediments ◽  
Late Weichselian ◽  
Maritime Region

scholarly journals Comparative14C and OSL dating of loess-paleosol sequences to evaluate post-depositional contamination ofn-alkane biomarkers

2017 ◽  
Vol 87 (1) ◽  
pp. 180-189 ◽  
Author(s):  
Michael Zech ◽  
Sebastian Kreutzer ◽  
Roland Zech ◽  
Tomasz Goslar ◽  
Sascha Meszner ◽  
...  
Keyword(s):  
Organic Matter ◽  
Mass Balance ◽  
Radiocarbon Dating ◽  
Optically Stimulated Luminescence ◽  
Lipid Biomarkers ◽  
Osl Dating ◽  
Mass Balance Calculation ◽  
Climate Signal ◽  
Isotope Mass Balance ◽  
Late Weichselian

AbstractThere is an ongoing controversial discussion as to whethern-alkane lipid biomarkers—and organic matter of loess in general—reflect a synsedimentary paleoenvironmental/climate signal or whether they are significantly affected by postdepositional “contamination,” for example related to root and rhizomicrobial activity. In order to address this issue at our study site (the Middle to Late Weichselian loess-paleosol sequence Gleina in Saxony, Germany), we determined and compared radiocarbon ages of bulkn-alkanes and sedimentation ages, as assessed by optically stimulated luminescence (OSL) dating. The bulkn-alkanes of the four dated samples yielded calibrated14C ages ranging from 24.1 to 49.7 cal ka BP (95.4% probability ranges). While the three uppermostn-alkane samples are well within the range or even slightly older than the OSL-inferred sedimentation ages, the lowermostn-alkane sample is slightly younger than the OSL ages. There is hence little or no evidence at our study site forn-alkanes in loess-paleosol sequences being significantly “contaminated” by deep subsoil rooting or microbial processes. We propose a14C isotope mass balance calculation for estimating such contaminations quantitatively. Radiocarbon dating of bulkn-alkanes might have great potential for Quaternary research, and we encourage further comparative14C and OSL studies.

Late Quaternary Sediments and Stratigraphy on the Continental Shelf off Troms and West Finnmark, Northern Norway

1978 ◽  
Vol 10 (3) ◽  
pp. 340-365 ◽  
Author(s):  
Tore O. Vorren ◽  
Inger F. Strass ◽  
Odd W. Lind-Hansen
Keyword(s):  
Late Quaternary ◽  
High Arctic ◽  
Quaternary Sediments ◽  
Environmental Evolution ◽  
The Holocene ◽  
Arctic Environment ◽  
Holocene Sediments ◽  
Low Arctic ◽  
Late Weichselian ◽  
Boreal Environment

Lithologic, paleontologic, and chronostratigraphic investigation of 13 gravity cores indicates the following environmental evolution: a high- (mid-) arctic period with a slight influx of ice-rafted debris occurred during the early middle Weichselian followed by a mid- (high-) arctic environment with a high influx of iceberg-rafted debris during the remainder of the middle Weichselian. The continental ice sheet probably did not extend beyond the inner shelf during middle Weichselian and a minimum relative sea level was ca. −120 m. A low-arctic environment occurred during (parts of) the late Weichselian with an initial winnowing of the sediments. The Norwegian Current entered the area during this substage. A high- (mid-) boreal environment occurred during the Holocene with high winnowing activity in the early Holocene. Winnowing is still very active on the shallower banks in contrast to the deeper banks where it has ceased. Relatively high percentages of carbonate in the form of biogenic skeletal remains occur in the Holocene sediments.

Fossil diatoms from the Volga Delta Holocene sediments (Damchik region) as indicators of the paleoecological conditions of sedimentation

2019 ◽  
pp. 270-273
Author(s):  
Yelena I. Shtyrkova ◽  
Yelena I. Polyakova
Keyword(s):  
Nature Reserve ◽  
Diatom Analysis ◽  
Volga Delta ◽  
The Core ◽  
Core Samples ◽  
Holocene Sediments ◽  
Fossil Diatoms

The results of fossil diatoms investigation from the deltaic sediments are presented. Samples were obtained from the core DM-1 and two Holocene outcrops from the Damchik region of the Astrakhan Nature Reserve. In the core samples eight periods of sedimentation based on diatom analysis were identified: the sediments formed in shallow freshwater basins and deltaic channels. The samples from the outcrops were investigated in much greater detail.

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