东昆仑西段阿其音金矿绢云母Ar-Ar测年及其地质意义

刘智刚,张爱奎,刘永乐,张勇,何书跃,孙非非

Ar-Ar Dating of Sericite from Aqiyin Gold Deposit in the West Section of East Kunlun and Its Geological Significance

Zhigang LIU,Aikui ZHANG,Yongle LIU,Yong ZHANG,Shuyue HE,Feifei SUN

表1 绢云母⁴⁰Ar/³⁹Ar阶段升温加热分析数据

Table 1 Analysis data of sericite ⁴⁰Ar/³⁹Ar stage heating

样品编号	加热阶段	温度/℃	⁴⁰Ar/³⁹Ar	³⁷Ar/³⁹Ar	³⁶Ar/³⁹Ar	⁴⁰Ar（r）/%	³⁹Ar（k）/%	（Age±2s）/Ma
	1	550	49.751366	0.000000	0.111075	34.02	0.16	174.86±45.83
	2	600	39.467305	0.000000	0.066591	50.14	2.40	202.81±3.91
	3	640	38.068333	0.143544	0.051947	59.70	5.32	231.11±2.32
	4	680	35.755931	0.152549	0.032200	73.42	5.15	264.44±1.84
	5	710	36.317076	0.000000	0.031163	74.64	2.90	272.41±2.48
AQYZK001	6	750	39.121845	0.270361	0.044077	66.76	29.19	263.20±1.78
	7	780	29.587880	0.091932	0.012487	87.55	13.65	261.17±1.05
	8	810	28.219098	0.021400	0.010236	89.28	15.10	254.49±0.96
	9	850	27.132901	0.137405	0.012316	86.62	8.68	238.50±1.23
	10	920	28.284008	0.085409	0.031443	67.17	3.77	195.14±2.45
	11	1 020	24.728657	0.344224	0.039174	53.29	3.26	137.60±3.72
	12	1 400	18.389849	1.624272	0.037209	40.90	10.42	79.89±1.80
	1	600	37.003033	0.561045	0.072752	42.02	4.35	162.54±3.18
	2	650	31.820847	0.113497	0.028663	73.41	3.05	238.92±2.38
	3	680	31.776327	0.489968	0.020656	80.91	7.39	261.38±1.88
	4	710	33.020082	1.607749	0.021279	81.34	6.26	272.42±2.20
	5	740	33.898360	2.209040	0.022804	80.63	9.16	276.99±1.87
AQYQZ06	6	770	32.065069	0.664519	0.011860	89.23	11.87	288.67±1.34
	7	810	28.889228	0.311043	0.004308	95.67	16.34	279.52±1.18
	8	840	27.840195	0.235063	0.005020	94.73	22.79	267.61±0.86
	9	880	26.835950	0.408568	0.007996	91.31	9.72	249.91±1.40
	10	920	28.049071	0.194034	0.011541	87.89	7.59	251.29±1.43
	11	970	29.579149	1.706830	0.021953	78.52	0.37	237.91±25.33
	12	1 400	29.901789	0.000000	0.036092	64.33	1.10	198.96±6.50