Cite this paper:
SHANG Zhiwen, WANG Fu, FANG Jing, LI Jianfen, CHEN Yongsheng, JIANG Xingyu, TIAN Lizhu, WANG Hong. Radiocarbon ages of different fractions of peat on coastal lowland of Bohai Bay: marine influence?[J]. Journal of Oceanology and Limnology, 2018, 36(5): 1562-1569

Radiocarbon ages of different fractions of peat on coastal lowland of Bohai Bay: marine influence?

SHANG Zhiwen1,2, WANG Fu1,2, FANG Jing3, LI Jianfen1,2, CHEN Yongsheng1,2, JIANG Xingyu1,2, TIAN Lizhu1,2, WANG Hong1,2
1 Tianjin Centre, China Geological Survey(CGS), Tianjin 300170, China;
2 Key Laboratory of Muddy Coast Geoenvironment, CGS, Tianjin 300170, China;
3 College of Urban and Environment Science, Tianjin Normal University, Tianjin 300387, China
Peat in boreholes is the most important 14C dating material used for constructing age framework. 20 bulk peat samples were collected from five boreholes, the 14C ages of two fractions (organic sediment fraction and peat fraction) of the bulk peat samples were investigated by AMS-dating and which fraction is better to help construct an age framework for the boreholes were compared and discussed. The results indicated that the peat fraction give a good dating results sequence in the boreholes, compared with the corresponding organic sediment fraction. And the dating results of organic sediment fraction show 161-6 702 years older than corresponding peat fraction, which was caused by marine influence. Then, we suggest an experience formula as y=0.99x-466.5 by the correlation analysis for correcting the marine influenced organic sediment ages within the conventional ages between 4 000 to 9 000 yrs BP, and more study should be carried out for the AMS 14C dating of the bulk organic sediments.
Key words:    coastal lowland of Bohai Bay|peat fraction|organic sediment fraction|AMS 14C dating|marine influence   
Received: 2017-03-30   Revised:
PDF (829 KB) Free
Print this page
Add to favorites
Email this article to others
Articles by SHANG Zhiwen
Articles by WANG Fu
Articles by FANG Jing
Articles by LI Jianfen
Articles by CHEN Yongsheng
Articles by JIANG Xingyu
Articles by TIAN Lizhu
Articles by WANG Hong
Bartley D D, Chambers C. 1992. A pollen diagram, radiocarbon ages and evidence of agriculture on Extwistle Moor, Lancashire. New Phytologist, 121(2):311-320.
Blaauw M, van der Plicht J, van Geel B. 2004. Radiocarbon dating of bulk peat samples from raised bogs:nonexistence of a previously reported ‘reservoir effect’? Quaternary Science Reviews, 23(14-15):1 573-1 542.
Brock F, Lee S, Housley R A, Ramsey C B. 2011. Variation in the radiocarbon age of different fractions of peat:a case study from Ahrenshöft, northern Germany. Quaternary Geochronology, 6(6):550-555.
Cook G T, Dugmore A J, Shore J S. 1998. The influence of pretreatment on humic acid yield and 14C age of Carex peat. Radiocarbon, 40(1):21-27.
Gulliksen S, Birks H H, Possnert G, Mangerud J. 1998. A calendar age estimate of the younger Dryas-Holocene boundary at Kråkenes, western Norway. The Holocene, 8(3):249-259.
Hammond A P, Goh K M, Tonkin P J, Manning M R. 1991. Chemical pretreatments for improving the radiocarbon dates of peats and organic silts in a gley podzol environment:Grahams Terrace, North Westland. New Zealand Journal of Geology and Geophysics, 34(2):191-194.
Johnson R H, Tallis J H, Wilson P. 1990. The seal edge coombes, North Derbyshire-a study of their erosional and depositional history. Journal of Quaternary Science, 5(1):83-94.
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(5):579-586.
Reimer P J, Bard E, Bayliss A, Beck J W, Blackwell P G, Bronk Ramsey C, Buck C E, Cheng H, Edwards R L, Friedrich M, Grootes P M, Guilderson T P, Haflidason H, Hajdas I, Hatté C, Heaton T J, Hoffmann D L, Hogg A G, Hughen K A, Kaiser K F, Kromer B, Manning S W, Niu M, Reimer R W, Richards D A, Scott E M, Southon J R, Staff R A, Turney C S M, van der Plicht J. 2013. Intcal13 and Marine13 radiocarbon age calibration curves 0-50,000 years Cal BP. Radiocarbon, 55(4):1 869-1 887.
Shore J S, Bartley D D, Harkness D D. 1995. Problems encountered with the 14C dating of peat. Quaternary Science Reviews, 14(4):373-383.
Southon J, Kashgarian M, Fontugne M, Metivier B, Yim W W S. 2002. Marine reservoir corrections for the Indian Ocean and Southeast Asia. Radiocarbon, 44(1):167-180.
Törnqvist T, de Jong A F M, Oosterbaan W A, van der Borg K. 1992. Accurate dating of organic deposits by AMS 14C measurement of macrofossils. Radiocarbon, 34(3):566-577.
Waddington J M, Roulet N T. 1997. Groundwater flow and dissolved carbon movement in a boreal peatland. Journal of Hydrology, 191(1-4):122-138.
Waller M P, Long A J, Schofield J E. 2006. Interpretation of radiocarbon dates from the upper surface of late-Holocene peat layers in coastal lowlands. The Holocene, 16(1):51-61.
Williams J B. 1989. Examination of freshwater peat pretreatment methodology. Radiocarbon, 31(3):269-275.
Wüst R A J, Jacobsen G E, van der Gaast H, Smith A M. 2008. Comparison of radiocarbon ages from different organic fractions in tropical peat cores:insights from Kalimantan, Indonesia. Radiocarbon, 50(3):359-372.
Zhou W J, Lu X F, Wu Z K, Deng L, Jull A J T, Donahue D, Beck W. 2002. Peat record reflecting Holocene climatic change in the Zoige Plateau and AMS radiocarbon dating. Chinese Science Bulletin, 47(1):66-70.
Copyright © Haiyang Xuebao