An attempt to correct for the fading in million year old basaltic rocks
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Radiation Research Division, Risoe National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000, Roskilde, Denmark
IMAR-Marine and Environmental Research Centre, Department of Earth Sciences, University of Coimbra, 3000-272, Coimbra, Portugal
Centre for Geophysics, Department of Earth Sciences, University of Coimbra, 3000-272, Coimbra, Portugal
Physical Research Laboratory, Navrangpura, Ahmedabad, 380 009, India
Online publication date: 2011-06-19
Publication date: 2011-09-01
Geochronometria 2011;38(3):223-230
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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