Age and Sedimentation Rates of Two Post - glacial Sequences in Tasmania
نویسنده
چکیده
Radiocarbon dating of Late deposits has shown that erosion of old organic materials and their redeposition in younger sediments ages that are too old. Also, the humid climate and leaching pedogenic environment of much of Tasmania translocation humic acids down profile through porous sediments. The humic acids may then be perched by impermeable clay or may be adsorbed/ absorbed by older clay and organic materials to give ages that are too young. These problems are illustrated by examples.
منابع مشابه
Late Quaternary History of Sedimentation on the Mac. Robertson Shelf, East Antarctica: Problems with 14c-dating of Marine Sediment Cores
HARRIS, P.T., O'BRIEN, P.E., SEDWICK, P. & TRUSWELL, E.M., 1996 (xi): Late Quaternary History of sedimentation on the Mac. Robertson Shelf, East Antarctica: problems with 14C-dating of marine sediment cores. In Banks, M.R. & Brown, M.]. (Eds): CLIMA TIC SUCCESSIONSAND GLACIAL HIS TOR YOF THE SOUTHERN HEMISPHERE OVER IRE LASTHVE MILLION YEARS. Pap. Proc. R. Soc. Tasm. 130(2): 47-53. ISSN 0080-47...
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