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An attempt to correct for the fading in million year old basaltic rocks

Morthekai P., Jain M., Cunha P. P., Azevedo J. M., Singhvi A. K.

Geochronometria

2011

Vol. 38, no. 3

223-230

The use of feldspar for luminescence dating has been restricted because of anomalous fad-ing. This has made its application to several important geological problems such as volcanic terrains difficult. Presently, two correction procedures are used to correct for anomalous fading. The present study tests these correction procedures using volcanic samples of known ages spanning the time peri-od of 400 ka to 2.2 Ma. These correction procedures provided grossly underestimated ages (up to 60%). The possible causes for the underestimation are discussed.