<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Recent research shows that the last interglacial climate was more unstable in comparison to Holocene. Lack of suitable dating techniques and precisely defined absolute age benchmarks is one from main problems for present LIG studies. Therefore many of LIG chronologies base on indirect dating techniques like record alignment strategies. In this context, speleothems are valuable paleoclimate archives because of their capability to be dated by U-series method. In Europe LIG speleothem records are known mostly from western and central part of the continent. In this paper we present a 1,650 mm long stalagmite (ocz-6) from Bulgarian Cave Orlova Chuka. The ocz-6 stalagmite records the period of time <italic>ca</italic>. 129–112 ka. Ocz-6 stalagmite was analyzed in terms of stable isotopic composition of calcite and trace elements content. All analyzed geochemical proxies point to dynamic changes in the environment during the Last Interglacial time. At the time of interglacial development (129–126.5 ka), ocz-6 records shows systematic change in proportion of moisture delivered from Atlantic source and other sources. The beginning of last interglacial optimum is connected with a rapid change to more humid and warm conditions. During interglacial demise local climate become more dependent from regional settings.</p></abstract>

Recent research shows that the last interglacial climate was more unstable in comparison to Holocene. Lack of suitable dating techniques and precisely defined absolute age benchmarks is one from main problems for present LIG studies. Therefore many of LIG chronologies base on indirect dating techniques like record alignment strategies. In this context, speleothems are valuable paleoclimate archives because of their capability to be dated by U-series method. In Europe LIG speleothem records are known mostly from western and central part of the continent. In this paper we present a 1,650 mm long stalagmite (ocz-6) from Bulgarian Cave Orlova Chuka. The ocz-6 stalagmite records the period of time ca. 129–112 ka. Ocz-6 stalagmite was analyzed in terms of stable isotopic composition of calcite and trace elements content. All analyzed geochemical proxies point to dynamic changes in the environment during the Last Interglacial time. At the time of interglacial development (129–126.5 ka), ocz-6 records shows systematic change in proportion of moisture delivered from Atlantic source and other sources. The beginning of last interglacial optimum is connected with a rapid change to more humid and warm conditions. During interglacial demise local climate become more dependent from regional settings.

A continuous stable isotope record of last interglacial age from the Bulgarian Cave Orlova Chuka

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Recent research shows that the last interglacial climate was more unstable in comparison to Holocene. Lack of suitable dating techniques and precisely defined...

A continuous stable isotope record of last interglacial age from the Bulgarian Cave Orlova Chuka

Article Category: Regular Articles

Publié en ligne: 30 mai 2019

Pages: 87 - 101

Reçu: 08 nov. 2018

Accepté: 11 mars 2019

DOI: https://doi.org/10.1515/geochr-2015-0107

Mots clés
LIG, paleoclimate, speleothem, stable isotopes, trace elements

© 2018 J. Pawlak, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A continuous stable isotope record of last interglacial age from the Bulgarian Cave Orlova Chuka

Article Category: Regular Articles

Publié en ligne: 30 mai 2019

Pages: 87 - 101

Reçu: 08 nov. 2018

Accepté: 11 mars 2019

DOI: https://doi.org/10.1515/geochr-2015-0107

Mots clésLIG, paleoclimate, speleothem, stable isotopes, trace elements

© 2018 J. Pawlak, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
LIG, paleoclimate, speleothem, stable isotopes, trace elements