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Radiocarbon-dated peat development: anthropogenic and climatic signals in a Holocene raised bog and lake profile from the Eastern part of the Carpathian Basin

Published online by Cambridge University Press:  16 May 2018

Réka Orsolya Tapody ,
Sándor Gulyás ,
Tünde Törőcsik ,
Pál Sümegi ,
Dávid Molnár ,
Balázs P Sümegi  and
Mihály Molnár
Réka Orsolya Tapody*
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary
Sándor Gulyás
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary
Tünde Törőcsik
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (Atomki), Bem tér 18/c, 4026 Debrecen, Hungary
Pál Sümegi
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary Archaeological Institute of Hungarian Academy of Sciences, Úri street 49, Budapest, Hungary
Dávid Molnár
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary
Balázs P Sümegi
Affiliation:
Department of Geology and Palaeontology, University of Szeged, Egyetem street 2, 6722 Szeged, Hungary Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (Atomki), Bem tér 18/c, 4026 Debrecen, Hungary
Mihály Molnár
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (Atomki), Bem tér 18/c, 4026 Debrecen, Hungary
*
*Corresponding author. Email: [email protected].
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Abstract

The peat bog at Homoródszentpál Kerek-tó (Round Lake), situated in Homoród Hills of the Eastern Carpathians in Romania, provides a continuous record of paleoclimatic and paleoenvironmental changes from the Early Holocene. In this study, we present a 7500-year-long high-resolution record of past climatic changes and signs of human impact recorded in a peat bog via integrating sedimentological, paleoecological and geochemical proxies. The basin of Round Lake formed around the Pleistocene–Holocene border when the permafrost thawed. Ponded water accumulated in the catchment basin from the beginning of the Holocene but ca. 7500 cal BP years ago lacustrine sedimentation was exchanged for peat accumulation. The 570-cm-long core was subsampled at 2–4 cm intervals and subjected to grain-size, loss-on-ignition (LOI), pollen, and radiocarbon (14C) analyses. Our findings were correlated with and interpreted in the light of paleobotanical records deriving from archaeological sites and the newest bioclimatological models of the nearby areas. Sedimentological analysis document erosion and accumulation events which were influenced by more complex processes like climate change. Based on environmental historical and climatic data we aimed to reconstruct the environmental changes of forested areas in the Homoródi Hills.

Keywords

AMS datingchronologypaleoecologypeat accumulation rates
Type
Soil
Information
Radiocarbon , Volume 60 , Issue 4: 2nd Radiocarbon in the Environment Conference Debrecen, Hungary, July 3–7, 2017 Part 1 of 2 , August 2018 , pp. 1215 - 1226
Copyright
© 2018 by the Arizona Board of Regents on behalf of the University of Arizona 

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