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An attempt to correct for the fading in million year old basaltic rocks |
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| Authors: | P. Morthekai Mayank Jain Pedro P. Cunha José M. Azevedo Ashok K. Singhvi |
| Affiliation: | 1.Physical Research Laboratory,Navrangpura, Ahmedabad,India;2.Radiation Research Division, Risoe National Laboratory for Sustainable Energy,Technical University of Denmark,Roskilde,Denmark;3.IMAR-Marine and Environmental Research Centre, Department of Earth Sciences,University of Coimbra,Coimbra,Portugal;4.Centre for Geophysics, Department of Earth Sciences,University of Coimbra,Coimbra,Portugal |
| Abstract: | The use of feldspar for luminescence dating has been restricted because of anomalous fading. 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 period 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. |
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