HIGHLY VARIABLE FRESHWATER RESERVOIR OFFSETS FOUND ALONG THE UPPER LENA WATERSHED, CIS-BAIKAL, SOUTHEAST SIBERIA

摘要: A program of paired dating human and faunal remains on a sample 11 prehistoric (Mesolithic/Neolithic to Early Bronze Age) graves in the Upper Lena basin, southeast Siberia, was initiated investigate freshwater reservoir effect (FRE). The results show presence substantial but highly variable offset, ranging from 255 1010 14 C yr. In contrast previous studies centered Lake Baikal Angara River, stable nitrogen isotope values little or no correlation with radiocarbon despite clear trophic differences seen δ 15 N between terrestrial aquatic sources protein region’s ecology. However, carbon measurements moderate negative some predictive value ( r = –0.70, p 0.016, df 10). Two different regression equations have been calculated, first using 13 for entire data set 2 0.49) second, both values, limited Age southern 0.84, 0.030, 5). source old River system is not clear. While river flows over carbonate bedrock moderately alkaline, we suggest that entering riverine foodweb through bank erosion other processes more likely candidate majority offset. DOI: 10.2458/azu_rc.57.18458