DO RADIOCARBON AGES OF PLANT WAX BIOMARKERS AGREE WITH ¹⁴C-TOC/OSL-BASED AGE MODELS IN AN ARID HIGH-ALTITUDE LAKE SYSTEM?

ABSTRACT To elucidate the dynamics of terrestrial leaf waxes in a high-altitude lake system, we performed compound-specific radiocarbon analysis (CSRA) long-chain n -alkanes two sediment core sections from Lake Karakul (Pamirs, Tajikistan) and surface soil samples catchment area. We aimed to answer question whether are delivered into with substantial delay due storage soils, which may cause potential bias when used as paleoenvironmental proxies. In CSRA results reveal an age range modern 2278 ± 155 cal BP. samples, three four -alkane ages fell on lower ends 1?-uncertainty ranges modeled sediments (based AMS 14 C-TOC OSL dating results). conclude that sedimentary represent compounds intermediate turnover time for example originating alluvial plains close shores. Overall, provide evidence wax this cold arid setting potentially older than conventional model indicates, but these findings need be interpreted context generally large uncertainty such models.