Laboratory experiments and detailed investigations of quartz from sediments indicate that it is

in principle

possible to date the last bleaching time of sediments. This paper gives a brief review on ESR dating of sediments. Considerable study has been directed at ESR dating of optically- bleached quartz in sediments. Quartz ESR signals have a remarkably complex response to light exposure. Good results have been obtained using the Al

E and Ge centers. The age range of ESR dating of sediments is much longer than 2 million years. But ESR dating of sediments is still not a very reliable technique till now.