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Carbon isotope variations and chronology of the last glacial-interglacial transition (14-9 ka BP).

Chris M Turney, Douglas D Harkness, J J Lowe

Abstract


We present delta (super 13) C data from both bulk organic sediment samples and terrestrial plant macrofossils from five high-resolution sedimentary sequences from the United Kingdom from which extensive multiproxy data sets have been obtained. These span the last glacial-interglacial transition. Chronological control has been provided by radiocarbon dating and/or tephrochronology. The results demonstrate that significant shifts in bulk organic delta (super 13) C can be identified at key climatic transitions in most of the sites. The data are affected by site-specific influences that restrict their use as chronological markers. However, terrestrial plant macrofossil records are more consistent and reveal shifts that appear to be synchronous and which therefore offer a basis for interregional correlation as well as significant paleoenvironmental information.

Keywords


interglacial environment;Borrobol Basin;Gransmoor England;Llanilid Wales;Whitrig Bog;Wales;tephrochronology;paleoenvironment;carbon cycle;geochemical cycle;accelerator mass spectra;climate change;cores;England;mass spectra;spectra;isotope ratios;Great Britain;United Kingdom;Scotland;Holocene;Plantae;igneous rocks;pyroclastics;volcanic rocks;paleoclimatology;Pleistocene;organic compounds;glaciation;Europe;Western Europe;sediments;Cenozoic;Quaternary;C 14;carbon;dates;isotopes;radioactive isotopes;C 13 C 12;stable isotopes;absolute age

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