Temat: 14C - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Deglaciation chronology of the Pandivere and Palivere ice-marginal zones in Estonia
Autorzy:: Saarse, L.
Heinsalu, A.
Veski, S.
Powiązania:: https://bibliotekanauki.pl/articles/2058988.pdf
Data publikacji:: 2012
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: deglaciation
Late Glacial
proglacial lakes
AMS 14C radiocarbon dating
Estonia
Opis:: Accelerator mass spectrometry (AMS) 14
Źródło:: Geological Quarterly; 2012, 56, 2; 353-362
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Relative sea level changes and development of the Hiiumaa Island during the Holocene
Autorzy:: Vassiljev, J.
Saarse, L.
Grudzinska, I.
Heinsalu, A.
Powiązania:: https://bibliotekanauki.pl/articles/2059662.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Litorina Sea
Limnea Sea
lithology
diatoms
AMS 14C dates
Estonia
Opis:: Three sediment cores (Loopsoo, Tihu, Prassi) from Hiiumaa Island (Estonia) were investigated using diatoms, lithological proxies, magnetic susceptibility, geochronological dates and incorporated with the previously studied Kõivasoo site, aiming to reconstruct the development of the island and shoreline changes during the Litorina Sea and the Limnea Sea. The highest level of the Litorina Sea shoreline near Kõivasoo is at 27.6 m a.s.l., and it occurred during the Initial Litorina Sea. Within the Litorina Sea transgression, 7800 cal yr BP, relative sea level reached 24.9 m a.s.l. at Kõivasoo, 24.1 m a.s.l. at Loopsoo, 23.6 m a.s.l. at Tihu, and 21.5 m a.s.l. at Prassi. Kõivasoo became isolated from the sea about 8500 cal yr BP, Loopsoo between 7100 and 6800 cal yr BP, Tihu around 4800 cal yr BP, and Prassi about 2500 cal yr BP. Presently gained data from Hiiumaa Island confirm that the Litorina Sea regressed consistently during the last 8000 years due to progressively declining isostatic rebound. The present study is also illustrated by 3-dimensional palaeogeographic maps of the Hiiumaa Island development.
Źródło:: Geological Quarterly; 2015, 59, 3; 517--530
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Reconstruction of atmospheric lead and heavy metal pollution in the Otrębowskie Brzegi peatland (S Poland)
Autorzy:: Pawełczyk, Fatima
Bloom, Karolina
Jucha, Witold
Michczyński, Adam
Okupny, Daniel
Sikorski, Jarosław
Tomkowiak, Julita
Zając, Ewelina
Fagel, Nathalie
Powiązania:: https://bibliotekanauki.pl/articles/2058587.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Pb isotopes
pollution
elemental record
human activity
14C dating
210Pb dating
palynological analysis
Opis:: We reconstruct palaeoenvironmental changes since the Late Holocene in the Orava-Nowy Targ Basin, with an emphasis on anthropogenic influence (Walker et al., 2018). This reconstruction employs multiproxy analyses of the Otrębowskie Brzegi poor fen. We combined radiocarbon and 210Pb dating with elemental geochemistry, stable lead isotopes, and palaeobotanical analyses. The core we investigated covers a period from 4200 ± 100 BC to the present, with a peat accumulation rate varying between 0.001 and 0.243 cm y-1. Heavy metal concentrations, Pb isotopic ratios, and a palynological analysis revealed a significant impact of human activities in the past. The highest concentration and accumulation rate of Pb, were found around 1950 AD. The 206Pb/207Pb quotient ranged between 1.168 and 1.223, with average value around 1.198. Most of the interpretation was based on Pb and its stable isotopes; however, other elements were also important indicators of natural and anthropogenic environmental changes. Our results revealed similarities between the geochemical composition of the peatland studied and other peatlands from the Orava-Nowy Targ Basin.
Źródło:: Geological Quarterly; 2019, 63, 3; 568--585
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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