Source carbon 14 used radiocarbon dating
Reliability of radiocarbon dating on various fractions of loess-soil sequence for Dadiwan section in the western Chinese Loess Plateau. Wang, Zongli Zhao, Hui Dong, Guanghui Zhou, Aifeng Liu, Jianbao and Zhang, Dongju 2014.
Sun, Ocean, Nuclear Bombs, and Fossil Fuels: Radiocarbon Variations and Implications for High-Resolution Dating. Andwinge, Maria Baika, Kalliopi Boyd, Meighan and Heymann, Christian 2016. Chemists, geophysicists, botanists, physiologists, statisticians, and other researchers have contributed to a prosperous interdisciplinary development.Carbon-14 dating cannot be applied to materials that have no C dates are less than that figure.It is sometimes thought possible to extend the dating range a few half-lives, so one occasionally sees dates as old as 70,000 years or more. The Issue of Contamination by Synthetic Resins in Radiocarbon Dating: The Case of a Painting by Ambrogio Lorenzetti. Caforio, Lucia Fedi, Mariaelena Liccioli, Lucia and Salvini, Antonella 2013.