Based on the gray theory and GM (1, 1) model, the life quality indexes in next few years are predicted using the statistical data of the life quality indexes of Yunnan' s 8 minority areas in recent years and also c...Based on the gray theory and GM (1, 1) model, the life quality indexes in next few years are predicted using the statistical data of the life quality indexes of Yunnan' s 8 minority areas in recent years and also compared with the standard value (2020) of building the national well-off society, and the differences between them are measured and calculated. Thus, effective reference information is provided for the decision-making of government.展开更多
Ar- 39Ar fast neutron activation age spectrum of quartz in ore collected from the Baiyangping Cu-Co polymetallic ore-concentrated area, Lanping Basin, is saddle-shaped. The plateau age, minimum appearance age and isoc...Ar- 39Ar fast neutron activation age spectrum of quartz in ore collected from the Baiyangping Cu-Co polymetallic ore-concentrated area, Lanping Basin, is saddle-shaped. The plateau age, minimum appearance age and isochron age shown on the spectra are 56.53± 0.43 Ma, 55.52± 1.78 Ma and 55.90± 0.29 Ma respectively. The age data are consistent with each other within 1σ uncertainties. Because the given initial 40Ar/ 36Ar value of 294.7± 1.14 is very close to Nier’s value ( 295.5±5), both plateau and isochron ages may be considered as the forming time of quartz. So the age of 55.90- 56.53 Ma represents the forming age of ore deposits. It is obvious that the ore deposits were formed during the Early Himalayan period.展开更多
文摘Based on the gray theory and GM (1, 1) model, the life quality indexes in next few years are predicted using the statistical data of the life quality indexes of Yunnan' s 8 minority areas in recent years and also compared with the standard value (2020) of building the national well-off society, and the differences between them are measured and calculated. Thus, effective reference information is provided for the decision-making of government.
文摘Ar- 39Ar fast neutron activation age spectrum of quartz in ore collected from the Baiyangping Cu-Co polymetallic ore-concentrated area, Lanping Basin, is saddle-shaped. The plateau age, minimum appearance age and isochron age shown on the spectra are 56.53± 0.43 Ma, 55.52± 1.78 Ma and 55.90± 0.29 Ma respectively. The age data are consistent with each other within 1σ uncertainties. Because the given initial 40Ar/ 36Ar value of 294.7± 1.14 is very close to Nier’s value ( 295.5±5), both plateau and isochron ages may be considered as the forming time of quartz. So the age of 55.90- 56.53 Ma represents the forming age of ore deposits. It is obvious that the ore deposits were formed during the Early Himalayan period.