地质学报（英文版）
地質學報（英文版）
지질학보（영문판）
ACTA GEOLOGICA SINICA
2011年
6期
1351-1358
,共8页
U-Pb dating%fission-track dating%Baishantou section%K/T boundary,Danian%Heilongjiang River area
The existence of the Cretaceous-Tertiary (K/T) boundary in the non-marine succession is expected at Jiayin in the Heilongjiang River area,China.Zircons from a tuff sample from the Baishantou Member of Wuyun Formation in Jiayin were analyzed by the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb dating and fission-track dating methods.Ages of 64.1±0.7 Ma (U-Pb) and 61.7±1.8 Ma (fission-track dating) were obtained,which allow reevaluation of a previously reported late Maastrichian age for the tuff layer that was in conflict with the paleontological evidence.These results confirm the Danian age of the section in agreement with the paleontological evidence.
