摘要
TL dating technique is of great advantage for determining the initial time of storing energy (T0) in an object to be analyzed. The sample is required to have undergone at least one thermal event permittiug all the residual storage to release. As u result,TL dating technique has found wide application in geochronology of pottery. The determination of T0 of loess is mainly based on the fact that fine particles of which loess is composed will lose their storage in the proceSs of transportation by wind. In our experiment TL dating technique Was adopted to determine the ages of fine quartz grains, and the results were corrceted for those of shine-fadlng experiment. TL dating of Malan loess specimens from Mt. Gaolanshan,Liugouhe near Lanzhou,Mt,Qijiadashan at Jinning and Baichaoyuan at Huining gave the age valnes of 2.6±0.1,3.6±0.3,4.7±0.5 and 10.0±0.6×10^4 yr.,respeetively.The values indicate that the Malan loess began depositing in Late Pleistocene,but the initial time and accumulation rate are different under different morphological conditions from place to place.
TL dating technique is of great advantage for determining the initial time of storing energy (T0) in an object to be analyzed. The sample is required to have undergone at least one thermal event permitting all the residual storage to release. As a result, TL dating technique has found wide application in geochronology of pottery. The determination of T0 of loess is mainly based on the fact that fine particles of which loess is composed will lose their storage in the process of transportation by wind.In our experiment TL dating technique was adopted to determime the ages of fine quartz grains, and the results were corrected for those of shine-fading experiment.TL dating of Malan loess specimens from Mt. Gaolanshan, Liugouhe near Lanzhou, Mt. Qijiadashan at Jingning and Baichaoyuan at Huining gave the age values of 2.6±0.1, 3.6±0.3, 4.7±0.5 and 10.0±0.6×104 yr., respectively. The values indicate that the Malan loess began depositing in Late Pleistocene, but the initial time and accumulation rate are different under different morphological conditions from place to place.
出处
《地球化学》
CAS
1984年第4期400-404,共5页
Geochimica
