Low to Middle Pleistocene Paleoclimatic Record from the Kraków-Częstochowa Upland (Poland) Based on Isotopic and Calcite Fabrics Aanalyses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F18%3A00498612" target="_blank" >RIV/67985831:_____/18:00498612 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1515/geochr-2015-0096" target="_blank" >http://dx.doi.org/10.1515/geochr-2015-0096</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/geochr-2015-0096" target="_blank" >10.1515/geochr-2015-0096</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Low to Middle Pleistocene Paleoclimatic Record from the Kraków-Częstochowa Upland (Poland) Based on Isotopic and Calcite Fabrics Aanalyses

Popis výsledku v původním jazyce

The quality of paleoenvironmental reconstruction based on speleothem records depends on the accuracy of the used proxies and the chronology of the studied record. As far as the dating method is concerned, in most cases, the best solution is the use of the U-series method to obtain a precise chronology. However, for older periods (i.e., over 0.5 Ma), dating has become a serious challenge. Theoretically, older materials could be dated with the U-Pb dating method. However, that method re-quires a relatively high uranium content (minimum of several ppm), whereas typical speleothems from Poland (and all of Central Europe) have uranium concentrations below 0.1 ppm. Because the materials in Polish caves are problematic, we applied oxygen isotope stratigraphy (OIS) as a tool for speleothem dating. By using OIS as an alternative tool to create a chronology of our flowstone, it was found that the studied flowstone crystallized from 975 to 470 ka with three major discontinuities, so obtained isotopic record can be correlated with oxygen isotopic stages from MIS 24 to MIS 12. The observed isotopic variability was also consistent and confirmed with the petrographic observations of the flowstone.

Název v anglickém jazyce

Low to Middle Pleistocene Paleoclimatic Record from the Kraków-Częstochowa Upland (Poland) Based on Isotopic and Calcite Fabrics Aanalyses

Popis výsledku anglicky

The quality of paleoenvironmental reconstruction based on speleothem records depends on the accuracy of the used proxies and the chronology of the studied record. As far as the dating method is concerned, in most cases, the best solution is the use of the U-series method to obtain a precise chronology. However, for older periods (i.e., over 0.5 Ma), dating has become a serious challenge. Theoretically, older materials could be dated with the U-Pb dating method. However, that method re-quires a relatively high uranium content (minimum of several ppm), whereas typical speleothems from Poland (and all of Central Europe) have uranium concentrations below 0.1 ppm. Because the materials in Polish caves are problematic, we applied oxygen isotope stratigraphy (OIS) as a tool for speleothem dating. By using OIS as an alternative tool to create a chronology of our flowstone, it was found that the studied flowstone crystallized from 975 to 470 ka with three major discontinuities, so obtained isotopic record can be correlated with oxygen isotopic stages from MIS 24 to MIS 12. The observed isotopic variability was also consistent and confirmed with the petrographic observations of the flowstone.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geochronometria

ISSN

1897-1695

e-ISSN

—

Svazek periodika

45

Číslo periodika v rámci svazku

Issue 1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

13

Strana od-do

185-197

Kód UT WoS článku

000443301800004

EID výsledku v databázi Scopus

2-s2.0-85056125853