Harada N.; Kondo T.; Fukuma K.; Uchida M.; Nakamura T.; Iwai M.; Murayama M.; Sugawara T.; Kusakabe M.
(2002)
There are few conventional dating methods that can be used to estimate the geological age of siliceous sediments on the order of 104-105 yr. In contrast, methods such as δ18O are available for dating carbonate-containing ...