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High-Resolution Peat Core Chronology Covering the Last 12 KYR Applying an Improved Peat Bog Sampling

  • Katalin Hubay (a1), Mihály Braun (a1), Sándor Harangi (a2), László Palcsu (a1), Marianna Túri (a1), A J Timothy Jull (a1) (a3) and Mihály Molnár (a1)...


This work focuses on building a high-resolution age-depth model for quantitative palaeoclimate study from the Mohos peat bog, East Carpathian mountains. The investigated core presents a continuous peat profile for the last 12 kyr. The chronology was based on 36 accelerator mass spectrometry radiocarbon (AMS 14C) analyses of the separated Sphagnum samples from different depths of the profile. Dry Sphagnum samples for AMS dating were prepared using the classic acid-base-acid (ABA) method followed with an oxidative bleaching step to get clean cellulose. Sphagnum cellulose samples were measured by AMS using the EnvironMICADAS at the ICER (Debrecen, Hungary). A high-resolution chronology was obtained with the use of Bayesian age-depth modeling. Peat accumulation rate has been calculated and the sections with variable accumulation rate values were observed along the profile.


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Belekopytov, IE, Beresnevich, VV. 1955. Giktorf’s peat boreres. Torfyanaya Promyshlennost 8:910.
Bennett, KD. 1994. Confidence intervals for age estimates and deposition times in late-Quaternary sediment sequences. The Holocene 4:337348. doi:10.1177/095968369400400401.
Björkman, L, Feurdean, A, Wohlfarth, B. 2003. Late-Glacial and Holocene forest dynamics at Steregoiu in the Gutaiului Mountains, Northwest Romania. Rev. Palaeobot. Palynol. 124:79111. doi:10.1016/S0034-6667(02)00249-X.
Blaauw, M, Bakker, R, Christen, JA, Valerie, Hall, van der Plicht, J. 2007. A Bayesian framework for age modeling of radiocarbon-dated peat deposits: Case studies from the Netherlands. Radiocarbon 49:357367.
Blaauw, M, Christen, JA. 2011. Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Anal. 6:457474. doi:10.1214/11-BA618.
Brock, F, Lee, S, Housley, RA, Bronk Ramsey, C. 2011. Variation in the radiocarbon age of different fractions of peat: A case study from Ahrenshöft, northern Germany. Quat. Geochronol. 6:550555. doi:10.1016/j.quageo.2011.08.003.
Charman, D. 2002. Peatlands And Environmental Change. Chichester: John Wiley Sons Ltd. 301 p.
Constantin, S, Bojar, AV, Lauritzen, SE, Lundberg, J. 2007. Holocene and Late Pleistocene climate in the sub-Mediterranean continental environment: A speleothem record from Poleva Cave (Southern Carpathians, Romania). Palaeogeogr. Palaeoclimatol. Palaeoecol. 243:322338. doi:10.1016/j.palaeo.2006.08.001.
Cumming, BF, Glew, JR, Smol, JP, Davis, RB, Norton, SA. 1993. Comment on “Core compression and surficial sediment loss of lake sediments of high porosity caused by gravity coring” (Crusius and Anderson). Limnol. Oceanogr. 38:695699.
De Vleeschouwer, F, Chambers, FM, Swindles, GT. 2010. Coring and sub-sampling of peatlands for palaeoenvironmental research. Mires Peat 7:110.
Demény, A, Czuppon, G, Siklósy, Z, Leél-Őssy, S, Lin, K, Shen, C-C, Gulyás, K. 2013. Mid-Holocene climate conditions and moisture source variations based on stable H, C and O isotope compositions of speleothems in Hungary. Quat. Int. 293:150156. doi:10.1016/j.quaint.2012.05.035.
Dragusin, V, Staubwasser, M, Hoffmann, DL, Ersek, V, Onac, BP, Veres, D. 2014. Constraining Holocene hydrological changes in the Carpathian-Balkan region using speleothem δ18O and pollen-based temperature reconstructions. Clim. Past 13631380. doi:10.5194/cp-10-1363-2014.
Harangi, S, Lukács, R, Schmitt, AK, Dunkl, I, Molnár, K, Kiss, B, Seghedi, I, Novothny, Á, Molnár, M. 2015. Constraints on the timing of Quaternary volcanism and duration of magma residence at Ciomadul volcano, east-central Europe, from combined U-Th/He and U-Th zircon geochronology. J. Volcanol. Geotherm. Res. 301:6680. doi:10.1016/j.jvolgeores.2015.05.002.
Heiri, O, Lotter, AF, Lemcke, G. 2001. Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. J. Paleolimnol. 25:101110.
Hong, YT, Jiang, HB, Liu, TS, Zhou, LP, Beer, J, Li, HD, Leng, XT, Hong, B. 2000. Response of climate to solar forcing recorded in a 6000-year 18O time-series of Chinese peat cellulose. The Holocene. 10:17.
Hong, YT, Wang, ZG, Jiang, HB, Lin, QH, Hong, B, Zhu, YX, Wang, Y, Xu, LS, Leng, XT, Li, HD. 2001. A 6000-year record of changes in drought and precipitation in northeastern China based on a d13C time series from peat cellulose. Earth and Planetary Science Letters. 185:111119.
Janovics, R, Túri, M, Futó, I, Molnár, M. 2017. An easy way of sealed tube combustion for all kind of 14C dating. Radiocarbon: this issue.
Jowsey, PC. 1966. An improved peat sampler. New Phytol. 65:245248.
Kalnina, L, Stivrins, N, Kuske, E, Ozola, I, Pujate, A, Zeimule, S, Grudzinska, I, Ratniece, V. 2014. Peat stratigraphy and changes in peat formation during the Holocene in Latvia. Quat. Int. 383:186195. doi:10.1016/j.quaint.2014.10.020.
Karátson, D, Telbisz, T, Harangi, S, Magyari, E, Dunkl, I, Kiss, B, Jánosi, C, Veres, D, Braun, M, Fodor, E, Biró, T, Kósik, S, von Eynatten, H, Lin, D. 2013. Morphometrical and geochronological constraints on the youngest eruptive activity in East-Central Europe at the Ciomadul (Csomád) lava dome complex, East Carpathians. J. Volcanol. Geotherm. Res. 255, 4356. doi:10.1016/j.jvolgeores.2013.01.013.
Karátson, D, Wulf, S, Veres, D, Magyari, EK, Gertisser, R, Timar-Gabor, A, Novothny, Á, Telbisz, T, Szalai, Z, Anechitei-Deacu, V, Appelt, O, Bormann, M, Jánosi, C, Hubay, K, Schäbitz, F. 2016. The latest explosive eruptions of Ciomadul (Csomád) volcano, East Carpathians–A tephrostratigraphic approach for the 51–29 ka BP time interval. J. Volcanol. Geotherm. Res. 319:2951. doi:10.1016/j.jvolgeores.2016.03.005.
Kilian, MR, van der Plicht, J, van Geel, B. 1995. Dating raised bogs: New aspects of AMS 14C wiggle matching, a reservoir effect and climatic change. Quat. Sci. Rev. 14:959996. doi:10.1016/0277-3791(95)00081-X.
Longman, J, Veres, D, Ersek, V, Salzmann, U, Hubay, K, Bormann, M, Wennrich, V, Schäbitz, F. 2017. Periodic input of dust over the Eastern Carpathians during the Holocene linked with Saharan desertification and human impact. Clim. Past 131. doi:10.5194/cp-2017-6.
Magyari, E, Buczkó, K, Jakab, G, Braun, M, Pál, Z, Karátson, D, Pap, I. 2009. Palaeolimnology of the last crater lake in the Eastern Carpathian Mountains: A multiproxy study of Holocene hydrological changes. Hydrobiologia. doi:10.1007/s10750-009-9801-1.
Magyari, E, Sumegi, P, Braun, M, Jakab, G, Molnar, M. 2001. Retarded wetland succession: anthropogenic and climatic signals in a Holocene peat bog profile from north-east Hungary. J. Ecol. 89:10191032. doi:10.1111/j.1365-2745.2001.00624.x.
Magyari, EK, Demény, A, Duczkó, K, Kern, Z, Vennemann, T, Fórizs, I, Vincze, I, Braun, M, Kovács, JI, Udvardi, B, Veres, D. 2013. A 13,600-year diatom oxygen isotope record from the South Carpathians (Romania): Reflection of winter conditions and possible links with North Atlantic circulation changes. Quat. Int. 293:136149. doi:10.1016/j.quaint.2012.05.042.
Molnár, M, Janovics, R, Major, I, Orsovszki, J, Gönczi, R, Veres, M, Leonard, AG, Castle, SM, Lange, TE, Wacker, L, Hajdas, I, Jull, TAJ. 2013a. Status report of the new AMS 14C sample preparation lab of the Hertelendi Laboratory of Environmental Studies (Debrecen, Hungary). Radiocarbon 55:665676. doi:10.2458/azu_js_rc.55.16394.
Molnár, M, Rinyu, L, Veres, M, Seiler, MT, Wacker, L, Synal, H-A. 2013b. EnvironMICADAS: a mini 14C AMS with enhanced gas ion source interface in the Hertelendi Laboratory of Environmental Studies (HEKAL), Hungary. Radiocarbon 55:338344. doi:10.2458/azu_js_rc.55.16331.
Nemec, M, Wacker, L, Hajdas, I, Gäggeler, H. 2010. Alternative methods for cellulose preparation for AMS measurement. Radiocarbon 52:13581370.
Nilsson, M, Klarqvist, M, Bohlin, E, Possnert, G. 2001. Variation in 14C age of macrofossils and different fractions of minute peat samples dated by AMS. The Holocene 11:579586. doi:10.1191/095968301680223521.
Orsovszki, G, Rinyu, L. 2015. Flame-sealed tube graphitization using zinc as the sole reduction agent: precision improvement of EnvironMICADAS 14C measurement on graphite targets. Radiocarbon 57:979990. doi:10.2458/azu.
Pécskay, Z, Lexa, J, Szakács, A, Balogh, K, Seghedi, I, Konečný, V, Kovács, M, Márton, E, Kaličiak, M, Széky-Fux, V, Póka, T, Gyarmati, P, Edelstein, O, Rosu, E, Žec, B. 1995. Space and time distribution of Neogene-Quaternary volcanism in the Carpatho-Pannonian Region. Acta Vulcanol. 7:1528.
Pécskay, Z, Szakács, A, Seghedi, I, Karátson, D. 1992. Contributions to the geochronology of Mt. Cucu volcano and the South Harghita (East Carpathians, Romania). Földtani Közlöny (Bull. Hung. Geol. Soc.), Budapest 122/2–4:265286.
Reimer, PJ, Bard, E, Bayliss, A, Beck, JW, Blackwell, PG, Ramsey, CB, Buck, CE, Cheng, H, Edwards, RL, Friedrich, M, Grootes, PM, Guilderson, TP, Haflidason, H, Hajdas, I, Hatté, C, Heaton, TJ, Hoffmann, DL, Hogg, AG, Hughen, KA, Kaiser, KF, Kromer, B, Manning, SW, Niu, M, Reimer, RW, Richards, DA, Scott, ME, Southon, JR, Staff, RA, Turney, CSM, van der Plicht, J. 2013. IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP. Radiocarbon 55:18691887. doi:10.2458/azu_js_rc.55.16947.
Rinyu, L, Molnár, M, Major, I, Nagy, T, Veres, M, Kimák, Á, Wacker, L, Synal, HA. 2013. Optimization of sealed tube graphitization method for environmental C-14 studies using MICADAS. Nucl. Instruments Methods Phys. Res. B 294:270275. doi:10.1016/j.nimb.2012.08.042.
Rinyu, L, Orsovszki, G, Futó, I, Veres, M, Molnár, M. 2015. Application of zinc sealed tube graphitization on sub-milligram samples using EnvironMICADAS. Nucl. Instruments Methods Phys. Res. B 361:406413. doi:10.1016/j.nimb.2015.03.083.
Schnitchen, C, Charman, DJ, Magyari, E, Braun, M, Grigorszky, I, Tóthmérész, B, Molnár, M, Szántó, Z. 2006. Reconstructing hydrological variability from testate amoebae analysis in Carpathian peatlands. J. Paleolimnol. 36:117. doi:10.1007/s10933-006-0001-y.
Shore, JS, Bartley, DD, Harkness, DD. 1995. Problems encountered with the 14C dating of peat. Quat. Sci. Rev. 14:373383. doi:10.1016/S0277-3791(14)00448-X.
Stuiver, M, Reimer, PJ. 1993. Extended 14C data base and revised Calib 3.0 14C age calibration program. Radiocarbon 35:215230.
Szakács, A, Seghedi, I, Pécskay, Z. 1993. Pecularities of South Harghita Mts. as the terminal segment of the Carpathian Neogene to Quaternary volcanic chain. Rev. Roum. Géologie, Géophysique Géographie. Série Géologie (Bucharest) 37:2136.
Szakács, A, Seghedi, I, Pécskay, Z, Mirea, V. 2015. Eruptive history of a low-frequency and low-output rate Pleistocene volcano, Ciomadul, South Harghita Mts, Romania. Bull. Volcanol. 77. doi:10.1007/s00445-014-0894-7
Tantau, I, Reille, M, de Beaulieu, J-L, Farcas, S, Goslar, T, Paterne, M. 2003. Vegetation history in the Eastern Romanian Carpathians: pollen analysis of two sequences from the Mohos crater. Veg. Hist. Archaeobot. 12:113125. doi:10.1007/s00334-003-0015-6.
Törnqvist, TE, De Jong, FM, Oosterbaan, WA, Vander Borg, K. 1992. Accurate dating of organic deposits by AMS C-14 measurement of macrofossils. Radiocarbon 34:566577.
Willis, KJ, Braun, M, Sümegi, P, Tóth, A. 1997. Does soil change cause vegetation change or vice versa? A temporal perspective from Hungary. Ecology. doi:10.1890/0012-9658(1997)078[0740:DSCCVC]2.0.CO;2.
Willis, KJ, Sümegi, P, Braun, M, Tóth, A. 1995. The late Quaternary environmental history of Bátorliget, N.E. Hungary. Palaeogeogr. Palaeoclimatol. Palaeoecol. doi:10.1016/0031-0182(95)00004-6.
Wohlfarth, B, Hannon, G, Feurdean, A, Ghergari, L, Onac, BP, Possnert, G. 2001. Reconstruction of climatic and environmental changes in NW Romania during the early part of the last deglaciation (∼15,000–13,600 cal yr BP). Quat. Sci. Rev. 20:18971914. doi:10.1016/S0277-3791(01)00014-2.
Wright, HE. 1993. Core compression. Limnol. Oceanogr. 38:699701.



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