AGE-DEPENDENCE OF LUMINESCENCE SIGNALS FROM GRANITIC AND MYLONITIC QUARTZ

Granite and mylonitic samples with an age range of 11-3300 Ma were col lected from regions of China. Several luminescence signals were measur ed from the extracted quartz. Age-dependence has been observed in thei r luminescence signals, including the sensitivity of the 110 degrees C TL-peak, the temperature of the high-temperature TL peak and the rege nerated TL with beta dose. Other luminescence signals show little age- dependence. The TL reaches maximum at about 160 degrees C in the quart z samples, which is significantly different from signals from sediment s. It is concluded that the luminescence signals may lead to the estab lishment of a new geochronological method for the whole earth history. (C) 1997 Elsevier Science Ltd.