Abstract
The sequence of laminated sediment of the lake Gosciaz, Poland, covers more than 13,000 years and is actually the longest sequence known so far. Besides of reconstructing past environmental changes, this sequence offers an excellent possibility for studying natural C-14 variations and calibrating the C-14 time scale in a range beyond 6,000 years B.P. The floating varve chronology based on previously taken sediment cores which cover a period of 9,682 years, has been improved by this study. Relative water level changes of the lake during the past 11,500 years have been reconstructed by means of C-14 and C-13 measurements carried out on carbonate fractions of the lake sediments. Periodical variations in the width of annual layers were found. The periods identified are 11 years and 22 years (solar cycle), 35 years (Bruckner cycle), and 200 years. The ratio of summer layer width and the total width of the annual layer shows secular changes which correlate with paleotemperature records. The duration of the Younger Dryas period was determined by combining the floating varve chronology with isotope and pollen analyses of the sediment material. A value of 1,500 years was found. The study also included radiocarbon dating of calcareous tufa taken from
More>>
Pazdur, M F
[1]
- Uniwersytet Slaski, Katowice (Poland). Inst. Fizyki
Citation Formats
Pazdur, M F.
14C dating of freshwater carbonate sediments with special reference to calcareous tufas and laminated lake sediments. Final report for the period 1 October 1988 - 15 November 1991.
IAEA: N. p.,
1992.
Web.
Pazdur, M F.
14C dating of freshwater carbonate sediments with special reference to calcareous tufas and laminated lake sediments. Final report for the period 1 October 1988 - 15 November 1991.
IAEA.
Pazdur, M F.
1992.
"14C dating of freshwater carbonate sediments with special reference to calcareous tufas and laminated lake sediments. Final report for the period 1 October 1988 - 15 November 1991."
IAEA.
@misc{etde_10108690,
title = {14C dating of freshwater carbonate sediments with special reference to calcareous tufas and laminated lake sediments. Final report for the period 1 October 1988 - 15 November 1991}
author = {Pazdur, M F}
abstractNote = {The sequence of laminated sediment of the lake Gosciaz, Poland, covers more than 13,000 years and is actually the longest sequence known so far. Besides of reconstructing past environmental changes, this sequence offers an excellent possibility for studying natural C-14 variations and calibrating the C-14 time scale in a range beyond 6,000 years B.P. The floating varve chronology based on previously taken sediment cores which cover a period of 9,682 years, has been improved by this study. Relative water level changes of the lake during the past 11,500 years have been reconstructed by means of C-14 and C-13 measurements carried out on carbonate fractions of the lake sediments. Periodical variations in the width of annual layers were found. The periods identified are 11 years and 22 years (solar cycle), 35 years (Bruckner cycle), and 200 years. The ratio of summer layer width and the total width of the annual layer shows secular changes which correlate with paleotemperature records. The duration of the Younger Dryas period was determined by combining the floating varve chronology with isotope and pollen analyses of the sediment material. A value of 1,500 years was found. The study also included radiocarbon dating of calcareous tufa taken from different study areas. 26 refs, 26 figs, 6 tabs.}
place = {IAEA}
year = {1992}
month = {Sep}
}
title = {14C dating of freshwater carbonate sediments with special reference to calcareous tufas and laminated lake sediments. Final report for the period 1 October 1988 - 15 November 1991}
author = {Pazdur, M F}
abstractNote = {The sequence of laminated sediment of the lake Gosciaz, Poland, covers more than 13,000 years and is actually the longest sequence known so far. Besides of reconstructing past environmental changes, this sequence offers an excellent possibility for studying natural C-14 variations and calibrating the C-14 time scale in a range beyond 6,000 years B.P. The floating varve chronology based on previously taken sediment cores which cover a period of 9,682 years, has been improved by this study. Relative water level changes of the lake during the past 11,500 years have been reconstructed by means of C-14 and C-13 measurements carried out on carbonate fractions of the lake sediments. Periodical variations in the width of annual layers were found. The periods identified are 11 years and 22 years (solar cycle), 35 years (Bruckner cycle), and 200 years. The ratio of summer layer width and the total width of the annual layer shows secular changes which correlate with paleotemperature records. The duration of the Younger Dryas period was determined by combining the floating varve chronology with isotope and pollen analyses of the sediment material. A value of 1,500 years was found. The study also included radiocarbon dating of calcareous tufa taken from different study areas. 26 refs, 26 figs, 6 tabs.}
place = {IAEA}
year = {1992}
month = {Sep}
}