Luminescence and Palaeoenvironmental Record in a Stalagmite in Panlong Cave, Guilin
桂林盘龙洞石笋发光性特征及其古环境记录的初步研究

Speleothem can provide some reliable palaeoenvironmental change information, which has been confirmed by many studies. The test part, about 16.3 cm, is taken from the lower part of the stalagmite of about 1.22 m long taken from Panlong cave, Guilin, China. The results show that the climate in Guilin area from 32000 a. B.P. to 11000 a. B.P. might be cold and dry. And the Luminescence spectral characteristics also show that there are many changes during this period. About 11300 a. B.P., the Luminescence spectral values abruptly change from low values to high values, and then gradually rise from 11000 a. B.P.. But there are several relative cold and dry periods, that is around 10700 a. B.P., around 10150 a. B.P., around 9000 a. B.P., and around 7200 a. B.P.. Since 7000 a. B.P., the climate might be more stable. In addition, the correlation between luminescence spectral records and 18 O records, microelement records shows that they are basically identical , and luminescence spectral records may have a higher resolution.