LA-ICP-MS独居石的U(Th)-Pb年龄精确测定方法及地质意义探究

doi:10.19657/j.geoscience.1000-8527.2022.065

现代地质 ›› 2023, Vol. 37 ›› Issue (02): 443-462.DOI: 10.19657/j.geoscience.1000-8527.2022.065

LA-ICP-MS独居石的U(Th)-Pb年龄精确测定方法及地质意义探究

张红雨¹(), 杨立明¹^,²^,³, 苏犁¹(), 宋述光², 王大川¹

1.中国地质大学(北京)科学研究院,北京 100083
2.北京大学地球与空间科学学院,北京 100871
3.中国长江三峡集团有限公司科学技术研究院,北京 100038

收稿日期:2022-03-22 修回日期:2022-11-30 出版日期:2023-04-10 发布日期:2023-05-23
通讯作者: 苏犁
作者简介:苏犁,女,教授,1962年出生,地球化学专业,主要研究方向为岩石地球化学和地质年代学。Email: suli@cugb.edu.cn。
张红雨,女,实验师,1985年出生,地球化学专业,主要研究方向为激光剥蚀电感耦合等离子质谱分析方法及地质应用。Email:zhanghongyu@cugb.edu.cn。
基金资助:
国家自然科学基金项目(42103061);国家自然科学基金项目(91955202);国家自然科学基金项目(92062219);北京离子探针中心开放课题基金资助项目

LA-ICP-MS Monazite U(Th)-Pb Dating and Geological Applications

ZHANG Hongyu¹(), YANG Liming¹^,²^,³, SU Li¹(), SONG Shuguang², WANG Dachuan¹

1. Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China
2. School of Earth and Space Sciences, Peking University, Beijing 100871, China
3. Science and Technology Research Institute, China Three Gorges Group Co. Ltd., Beijing 100038, China

Received:2022-03-22 Revised:2022-11-30 Online:2023-04-10 Published:2023-05-23
Contact: SU Li

摘要/Abstract

摘要：

独居石[(LREE, Th)PO₄]在各类地质样品中广泛存在且具有Th含量高和普通铅低的成分特征,可作为U(Th)-Pb定年的合适矿物。本文利用中国地质大学(北京)元素地球化学实验室的激光等离子体质谱仪(LA-ICP-MS),建立了以独居石(44069)为外标的LA-ICP-MS独居石U(Th)-Pb年龄测定方法,通过对捷克南部Bohemian Massif麻粒岩地块长英质伟晶岩(脉)中独居石的对比测定,讨论了不同检测条件(积分时间、激光剥蚀取样方式(点剥蚀和线扫描)、激光束斑直径(25 μm和12 μm)、数据处理软件参数)对独居石U-Th-Pb同位素体系质量分馏的影响。同位素比值和年龄结果对比表明,25 μm点垂直取样和25 μm线扫描取样的分析精度最优;Th-Pb同位素体系的质量分馏略高于U-Pb同位素体系,但误差明显小于锆石,提出独居石的²⁰⁸Pb/²³²Th年龄与²⁰⁶Pb/²³⁸U年龄结果误差范围一致,可作为含高U锆石地质体定年的新途径。对东昆仑清水泉麻粒岩带变质岩中独居石和锆石年龄结果的对比分析,揭示独居石年代学研究可有效地约束缺少锆石生长的沉积变质岩系变质作用时限。LA-ICP-MS独居石U(Th)-Pb定年方法在区域变质、沉积成岩作用、S型花岗岩的精细研究中有广泛应用前景。

关键词: 独居石, LA-ICP-MS, U(Th)-Pb同位素, 分馏作用, 年代学

Abstract:

Monazite [(LREE,Th)PO₄], widespread in most geological samples, has high Th and low common lead contents, and can thus be used for U(Th)-Pb dating. In this paper, monazite LA-ICP-MS U(Th)-Pb age determination method with monazite (44069) as external standard was established, using laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) of the Element Geochemistry Laboratory at the China University of Geosciences (Beijing). Monazite from the Bohemian Massif granulite were selected to analyze, aiming to address the mass fractionation of monazite U(Th)-Pb isotope system under different conditions, such as the integration time, denudation conditions (point denudation and line scanning), beam spot diameter (25 μm and 12 μm) and parameters of data processing software. Isotopic ratio and age results show that the analytical accuracy is the best under 25 μm vertical and 25 μm line scanning mode, and that the mass fractionation of Th-Pb isotope system is slightly higher than that of U-Pb isotope system. The mass fractionation between Th-Pb and U-Pb system of monazite, however, is significantly smaller than that of zircon. We suggest that the monazite ²⁰⁸Pb/²³²Th age is consistent with the ²⁰⁶Pb/²³⁸U age within error, which can be used as a new way to date geological bodies with high-U zircon. Based on the age results of monazite and zircon from metamorphic rocks of the Qingshuiquan granulite belt in East Kunlun, it is revealed that monazite geochronology can effectively constrain the metamorphic age, especially in sedimentary-metamorphic rocks that lack zircon. LA-ICP-MS monazite U(Th)-Pb dating method will be widely used in determining regional metamorphism, sedimentary diagenesis and S-type granite intrusion.

Key words: monazite, LA-ICP-MS, U(Th)-Pb isotope system, fractionation effect, geochronology

中图分类号:

P57
P597

张红雨, 杨立明, 苏犁, 宋述光, 王大川. LA-ICP-MS独居石的U(Th)-Pb年龄精确测定方法及地质意义探究[J]. 现代地质, 2023, 37(02): 443-462.

ZHANG Hongyu, YANG Liming, SU Li, SONG Shuguang, WANG Dachuan. LA-ICP-MS Monazite U(Th)-Pb Dating and Geological Applications[J]. Geoscience, 2023, 37(02): 443-462.

图/表 13

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样品号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Hf	Ta	Th	U	Pb	ΣREE	LREE/ HREE	δEu
PLV-01^*	293354	395526	40191	129987	14867	297.1	6484	609.3	2141	237.7	379.8	28.00	110.5	8.560	1.160	0.171	176795	10055	2353	884221	87.43	0.093
PLV-02^*	297805	409767	41441	130223	14679	278.0	6439	589.8	2024	229.6	367.8	26.25	105.3	8.340	1.350	0.192	103644	9866	1478	903983	91.34	0.087
PLV-03^*	356452	432596	42415	131076	14679	827.0	6308	577.9	2015	219.8	349.1	24.70	99.0	7.680	0.870	0.176	67246	8945	1038	987645	101.87	0.263
PLV-04^*	301721	430533	43780	143549	16669	405.8	7252	647.0	2131	227.5	342.9	22.29	87.7	6.590	0.800	0.195	10387	5065	328	947375	87.40	0.113
PLV-05^*	333307	402413	40463	128327	15190	614.7	6665	633.6	2184	241.8	365.8	24.06	89.1	6.190	0.940	0.208	65187	9502	1060	930524	90.14	0.187
PLV-06^*	282871	443510	46389	152567	18408	290.3	8587	731.4	2457	259.1	390.1	25.01	93.3	6.490	1.000	0.151	2631	3972	189	956585	75.22	0.071
PLV-07^*	281308	431158	44935	150843	18543	301.3	8843	738.7	2511	274.3	425.4	29.55	119.4	8.870	0.930	0.187	479	4826	206	940039	71.59	0.072
PLV-08^*	300597	406568	40903	129505	15143	326.8	6634	617.4	2121	228.4	344.3	23.27	83.8	5.960	0.710	0.155	75465	6167	1061	903100	88.79	0.100
PLV-09^*	273418	446492	49080	166722	21978	237.1	10661	921.6	3075	325.6	464.2	29.97	112.2	8.110	1.290	0.232	802	5791	251	973524	61.42	0.047
PLV-10^*	290600	429077	43248	138103	15856	220.8	6806	635.0	2107	227.0	348.0	22.92	91.4	6.580	0.870	0.237	15218	7342	467	927349	89.52	0.065
平均值	301143	422764	43285	140090	16601	379.9	7468	670.2	2277	247.1	377.7	25.60	99.2	7.337	0.992	0.190	51785	7153	843	935435	84.47	0.110
PLV-01^**	333371	439431	41404	135143	14880	892.2	7845	644.5	2169	230.6	391.4	25.34	99.1	7.490	0.867	0.116	24362	6629	572	976534	84.57	0.252
PLV-02^**	298448	435352	41656	132493	14827	315.1	7955	666.0	2247	240.3	421.9	28.07	116.2	8.730	1.062	0.116	106267	9994	1645	934773	79.01	0.089
PLV-03^**	284466	448027	45890	150811	17965	256.1	9581	811.1	2656	271.1	436.1	25.60	100.2	6.940	1.154	0.172	3445	7065	353	961303	68.22	0.060
PLV-04^**	340888	444311	42356	133093	14981	842.3	7857	657.2	2150	221.6	361.6	21.40	79.0	5.370	1.002	0.141	60056	9440	1101	987826	86.01	0.237
PLV-05^**	324258	432502	41920	136516	15958	707.7	8498	737.6	2467	259.3	419.2	25.58	93.8	6.530	0.997	0.138	44949	8276	875	964369	76.10	0.186
PLV-06^**	307579	434269	42676	136633	15774	376.2	8367	737.4	2492	265.0	428.6	27.05	103.8	7.270	1.211	0.163	62611	7293	1014	949735	75.42	0.100
PLV-07^**	273798	454049	49091	170376	21714	318.6	11387	1036.9	3523	380.3	634.6	42.64	175.5	13.000	1.500	0.214	536	9419	423	986540	56.38	0.062
PLV-08^**	359052	447510	42691	138738	14802	884.8	7903	654.2	2274	240.5	405.3	26.20	99.1	7.220	0.901	0.123	110390	11521	1733	1015287	86.45	0.250
PLV-09^**	284239	454733	48935	166224	21696	636.0	11203	958.8	3041	304.9	471.7	27.23	100.3	6.790	1.373	0.154	7670	4032	269	992577	60.60	0.125
PLV-10^**	299295	441113	44786	142302	16877	278.5	8889	762.3	2575	270.2	443.4	27.81	105.2	7.460	1.153	0.146	62562	6811	986	957732	72.22	0.070
PLV-11^**	283877	414799	39804	127195	14483	231.1	6420	588.7	2003	215.6	324.5	22.28	85.5	6.190	0.740	0.112	30146	7158	585	890055	91.08	0.073
PLV-12^**	325101	433386	42380	134512	15140	811.7	6730	600.2	2027	219.1	321.4	22.06	82.3	5.980	1.180	0.116	28767	6884	557	961339	95.06	0.246
PLV-13^**	298788	435346	43299	138827	15912	264.9	7209	658.7	2218	242.8	371.8	26.72	107.8	8.040	0.896	0.143	33445	8917	685	943279	85.99	0.076
PLV-14^**	299058	400161	39262	124986	14294	346.3	6590	613.7	2177	246.2	383.5	28.21	110.7	8.050	1.040	0.198	169483	9229	2096	888264	86.46	0.109
PLV-15^**	287064	413673	41364	134328	15764	336.8	7165	665.1	2283	244.9	355.6	24.02	87.2	6.100	1.150	0.130	44207	5216	6349	903361	82.41	0.097
PLV-16	253463	438518	50307	177884	22376	258.4	10095	976.0	3178	336.7	496.4	35.00	140.3	9.960	1.360	0.145	604	4921	217	958073	61.75	0.053
平均值	303297	435449	43614	142504	16715	484.8	8356	735.5	2467	261.8	416.7	27.20	105.4	7.570	1.099	0.145	49344	7675	859	954441	77.98	0.130
PLV-01^***	221698	312664	29335	114138	13203	231.6	9283	537.7	2093	152.1	352.2	18.07	91.8	5.810	0.800	0.097	162839	8593	2610	703802	55.15	0.064
PLV-02^***	237931	323267	30013	117166	13119	217.8	9296	528.6	2007	146.0	329.7	16.35	82.3	5.170	0.750	0.100	115411	7993	1936	734126	58.15	0.060
PLV-03^***	220723	345000	34793	142350	17156	266.8	11073	653.1	2467	198.6	364.3	16.13	80.5	4.910	0.890	0.112	2601	3410	203	775146	51.17	0.059
PLV-04^***	257423	339496	31819	128830	14505	874.0	9696	583.1	2244	160.5	336.8	15.56	73.7	4.460	0.880	0.101	72209	9065	1471	786061	58.94	0.225
PLV-05^***	238815	332602	31450	122248	14047	283.5	9220	573.8	2291	182.7	358.2	17.76	84.2	5.070	0.850	0.098	75179	5884	1259	752179	58.07	0.076
PLV-06^***	274004	355293	37052	147894	17706	1128.1	11854	702.5	2827	208.0	454.7	25.65	128.1	9.110	2.720	0.147	17936	3841	600	849287	51.39	0.238
PLV-07^***	286992	407437	37572	163777	16912	265.2	10911	635.0	2516	197.2	431.9	23.01	123.8	7.160	1.180	0.112	162797	13334	2737	927801	61.50	0.060
PLV-08^***	274608	427673	37101	119123	13236	282.0	6672	589.8	1965	214.7	355.0	24.79	101.5	7.650	1.040	0.131	99267	8868	1646	881952	87.82	0.092
PLV-09^***	278693	460180	40236	128880	15339	237.7	7710	670.2	2175	220.8	345.6	21.28	82.9	5.740	0.850	0.133	24876	6996	628	934796	82.23	0.067
PLV-10^***	285181	457214	41423	139799	16248	645.1	8084	704.9	2293	237.6	360.4	22.14	80.7	5.450	1.030	0.127	13444	4521	386	952299	79.78	0.172
PLV-11^***	269587	500869	52849	197910	25909	640.3	12719	1197.1	4183	434.6	638.6	40.89	149.0	9.840	1.510	0.264	10388	2630	263	1067136	54.09	0.108
PLV-12^***	302492	468581	42570	139647	16770	406.0	8717	791.0	2730	285.0	430.5	27.38	105.5	7.160	1.250	0.149	40584	6436	797	983557	74.12	0.103
PLV-13^***	294579	529293	49680	171505	22091	404.0	10899	1010.2	3542	389.6	618.8	44.43	173.6	12.590	1.690	0.176	3701	4201	256	1084243	63.96	0.080
PLV-14^***	319015	448831	38926	127048	13970	771.2	7285	638.2	2103	239.6	383.7	26.43	101.8	7.320	1.010	0.150	27193	6542	609	959345	87.96	0.234
PLV-15^***	261790	460841	44266	151664	18358	480.4	9374	843.1	2791	289.7	442.0	28.19	104.0	7.240	1.310	0.138	6406	4089	273	951279	67.54	0.112
PLV-16^***	265629	457974	42431	142597	17345	222.7	8792	807.8	2733	290.0	447.7	30.06	115.1	8.090	1.430	0.133	51855	7645	962	939422	70.04	0.055
平均值	268072	414201	38845	140911	16620	459.8	9474	716.6	2560	240.4	415.6	24.88	104.9	7.048	1.199	0.136	55418	6503	1040	892652	66.37	0.113
11KL73-01	308264	434683	50587	248681	33865	3058	13905	503.1	694.0	37.58	136.6	1.530	12.9	0.540	0.280	0.049	108848	8259	2501	1094429	70.57	0.431
11KL73-02	254191	388251	44965	174017	22188	2155	7625	278.1	398.6	26.66	90.52	1.362	8.2	0.449	0.272	0.044	67702	6169	1593	894195	105.08	0.507
11KL73-03	251733	390569	45465	182978	24321	2375	8719	336.5	494.7	31.62	97.10	1.455	9.1	0.484	0.267	0.043	77070	6497	1794	907131	92.62	0.499
11KL73-04	254713	393622	45710	176985	20959	1252	7022	263.7	366.2	23.02	90.12	1.016	6.7	0.362	0.244	0.039	90641	4754	1878	901014	114.9	0.315
11KL73-05	259521	406355	46380	181620	23132	2041	8321	337.9	562.1	39.68	106.4	1.749	9.4	0.536	0.209	0.046	66536	6026	1556	928428	97.99	0.450
11KL73-10	277148	450014	53696	202210	17350	387	6256	246.1	407.4	30.26	110.7	1.810	8.8	0.525	0.230	0.058	121499	3757	2266	1007866	141.7	0.114
11KL73-07	257257	399498	46938	177570	19338	889	7142	306.3	533.5	42.18	115.9	2.615	11.9	0.786	0.282	0.045	86914	1404	1590	909644	110.5	0.231
11KL73-08	277148	450014	53696	202210	17350	387	6256	246.1	407.4	30.26	110.7	1.810	8.8	0.525	0.230	0.058	121499	3757	2266	1007866	141.7	0.114
11KL73-09	202186	311716	34495	164736	21438	1754	9781	278.0	345.9	20.19	128.7	1.060	9.5	0.392	0.179	0.034	69119	5167	1795	746889	69.69	0.370
11KL73-10	202703	323122	35031	155894	13936	462	8134	205.2	246.0	15.58	126.8	0.950	7.5	0.346	0.133	0.029	100264	2090	2076	739885	83.69	0.133
11KL73-11	195195	296076	32078	152692	21850	2357	12053	470.6	829.2	34.34	144.1	1.370	13.4	0.600	0.343	0.035	84263	7986	2371	713794	51.69	0.444
11KL73-12	185387	316431	38056	201785	23252	164	9924	309.3	393.3	23.64	169.1	1.140	9.6	0.418	0.218	0.033	62688	3126	1498	775907	70.64	0.033
11KL73-13	195289	289393	32431	158169	22562	2396	12521	499.8	874.3	36.59	138.7	1.410	13.7	0.610	0.361	0.040	77790	7361	2142	714326	49.71	0.436
11KL73-14	203526	320824	34708	163178	21182	1739	9891	286.0	362.1	20.88	128.3	0.910	9.0	0.360	0.208	0.038	82037	7107	2197	755855	69.65	0.367
11KL73-15	198462	312470	32500	151594	17172	1253	8209	222.9	262.2	15.10	113.4	0.750	7.4	0.281	0.125	0.034	89522	4701	2139	722282	80.79	0.323
11KL114-01	180793	371902	50328	217880	40509	82.7	17476	1052	1956	132.7	167.6	6.750	27.2	1.790	1.100	0.114	71787	7366	1906	882316	41.38	0.010
11KL114-02	205227	369520	46935	196380	37786	142.5	19197	1258	2441	159.7	185.9	7.780	30.6	2.070	1.260	0.140	71217	7731	1599	879273	36.77	0.016
11KL114-03	213944	408300	49779	218643	42690	109.8	22308	1329	2510	163.3	231.9	7.660	37.7	2.420	1.089	0.109	41210	5268	1046	960057	35.11	0.011
11KL114-04	208433	419952	52636	222841	38909	114.3	17968	1064	2041	141.2	228.8	7.200	34.2	2.157	0.935	0.093	1596	1248	111	964372	43.88	0.013
11KL114-05	186675	383903	51194	214963	42899	68.7	20226	1173	2246	148.2	231.2	7.520	36.6	2.390	1.051	0.089	56780	3973	1247	903773	36.55	0.007
11KL114-06	166006	385024	56326	253636	38884	42.9	15297	849	1613	116.5	216.0	6.450	30.2	2.027	0.719	0.095	34433	13364	1469	918050	49.64	0.005
11KL114-07	193986	419239	54702	227159	32432	62.3	12591	654	1209	86.8	180.8	4.880	23.1	1.451	0.486	0.072	38704	4094	931	942332	62.88	0.009
11KL114-08	193896	406507	54082	242229	46886	94.7	21366	1165	2111	134.8	214.4	6.030	32.3	2.043	1.047	0.093	9560	5643	543	968725	37.70	0.009
11KL114-09	214514	409719	50985	219892	42440	99.1	21392	1259	2293	149.5	225.1	7.190	35.6	2.240	0.967	0.112	23590	9587	1061	963012	36.97	0.010
11KL114-10	223544	417139	50902	215189	40569	107.7	21029	1238	2340	153.8	225.6	7.090	34.3	2.206	1.019	0.098	6770	2024	254	972481	37.85	0.011
11KL114-11	226431	428386	54542	235169	45699	110.8	23121	1351	2580	169.4	246.1	7.580	37.3	2.310	1.151	0.120	16371	7695	800	1017852	35.99	0.010
11KL114-12	175349	402316	58811	272586	48016	108.2	19334	1104	2137	152.5	256.2	8.120	37.5	2.450	0.758	0.097	10200	9078	785	980219	41.56	0.011
11KL114-13	205227	369520	46935	196380	37786	142.5	19197	1258	2441	159.7	185.9	7.780	30.6	2.070	1.260	0.140	71217	7731	1599	879273	36.77	0.016
11KL114-14	180793	371902	50328	217880	40509	82.7	17476	1052	1956	132.7	167.6	6.750	27.2	1.790	1.100	0.114	71787	7366	1582	882316	41.38	0.010
11KL114-15	192732	376571	48904	212351	41807	85.5	19447	1249	2418	163.5	195.2	8.090	32.2	2.170	1.070	0.090	54134	8954	1405	895967	37.10	0.010
11KL114-16	206146	390848	49526	206619	39776	98.6	19128	1193	2192	146.4	173.6	7.090	28.4	1.870	0.910	0.097	28517	4899	734	915884	39.05	0.010
11KL114-17	168791	365349	48572	203881	33932	53.8	13200	800	1562	113.5	153.4	6.310	25.2	1.690	0.740	0.112	116823	13367	2675	836441	51.73	0.010
11KL114-18	176728	376192	49305	208512	36065	54.2	14012	807	1505	105.0	141.4	5.550	22.5	1.470	0.619	0.071	77591	3826	1470	863456	51.01	0.010

样品号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Hf	Ta	Th	U	Pb	ΣREE	LREE/ HREE	δEu
PLV-01^*	293354	395526	40191	129987	14867	297.1	6484	609.3	2141	237.7	379.8	28.00	110.5	8.560	1.160	0.171	176795	10055	2353	884221	87.43	0.093
PLV-02^*	297805	409767	41441	130223	14679	278.0	6439	589.8	2024	229.6	367.8	26.25	105.3	8.340	1.350	0.192	103644	9866	1478	903983	91.34	0.087
PLV-03^*	356452	432596	42415	131076	14679	827.0	6308	577.9	2015	219.8	349.1	24.70	99.0	7.680	0.870	0.176	67246	8945	1038	987645	101.87	0.263
PLV-04^*	301721	430533	43780	143549	16669	405.8	7252	647.0	2131	227.5	342.9	22.29	87.7	6.590	0.800	0.195	10387	5065	328	947375	87.40	0.113
PLV-05^*	333307	402413	40463	128327	15190	614.7	6665	633.6	2184	241.8	365.8	24.06	89.1	6.190	0.940	0.208	65187	9502	1060	930524	90.14	0.187
PLV-06^*	282871	443510	46389	152567	18408	290.3	8587	731.4	2457	259.1	390.1	25.01	93.3	6.490	1.000	0.151	2631	3972	189	956585	75.22	0.071
PLV-07^*	281308	431158	44935	150843	18543	301.3	8843	738.7	2511	274.3	425.4	29.55	119.4	8.870	0.930	0.187	479	4826	206	940039	71.59	0.072
PLV-08^*	300597	406568	40903	129505	15143	326.8	6634	617.4	2121	228.4	344.3	23.27	83.8	5.960	0.710	0.155	75465	6167	1061	903100	88.79	0.100
PLV-09^*	273418	446492	49080	166722	21978	237.1	10661	921.6	3075	325.6	464.2	29.97	112.2	8.110	1.290	0.232	802	5791	251	973524	61.42	0.047
PLV-10^*	290600	429077	43248	138103	15856	220.8	6806	635.0	2107	227.0	348.0	22.92	91.4	6.580	0.870	0.237	15218	7342	467	927349	89.52	0.065
平均值	301143	422764	43285	140090	16601	379.9	7468	670.2	2277	247.1	377.7	25.60	99.2	7.337	0.992	0.190	51785	7153	843	935435	84.47	0.110
PLV-01^**	333371	439431	41404	135143	14880	892.2	7845	644.5	2169	230.6	391.4	25.34	99.1	7.490	0.867	0.116	24362	6629	572	976534	84.57	0.252
PLV-02^**	298448	435352	41656	132493	14827	315.1	7955	666.0	2247	240.3	421.9	28.07	116.2	8.730	1.062	0.116	106267	9994	1645	934773	79.01	0.089
PLV-03^**	284466	448027	45890	150811	17965	256.1	9581	811.1	2656	271.1	436.1	25.60	100.2	6.940	1.154	0.172	3445	7065	353	961303	68.22	0.060
PLV-04^**	340888	444311	42356	133093	14981	842.3	7857	657.2	2150	221.6	361.6	21.40	79.0	5.370	1.002	0.141	60056	9440	1101	987826	86.01	0.237
PLV-05^**	324258	432502	41920	136516	15958	707.7	8498	737.6	2467	259.3	419.2	25.58	93.8	6.530	0.997	0.138	44949	8276	875	964369	76.10	0.186
PLV-06^**	307579	434269	42676	136633	15774	376.2	8367	737.4	2492	265.0	428.6	27.05	103.8	7.270	1.211	0.163	62611	7293	1014	949735	75.42	0.100
PLV-07^**	273798	454049	49091	170376	21714	318.6	11387	1036.9	3523	380.3	634.6	42.64	175.5	13.000	1.500	0.214	536	9419	423	986540	56.38	0.062
PLV-08^**	359052	447510	42691	138738	14802	884.8	7903	654.2	2274	240.5	405.3	26.20	99.1	7.220	0.901	0.123	110390	11521	1733	1015287	86.45	0.250
PLV-09^**	284239	454733	48935	166224	21696	636.0	11203	958.8	3041	304.9	471.7	27.23	100.3	6.790	1.373	0.154	7670	4032	269	992577	60.60	0.125
PLV-10^**	299295	441113	44786	142302	16877	278.5	8889	762.3	2575	270.2	443.4	27.81	105.2	7.460	1.153	0.146	62562	6811	986	957732	72.22	0.070
PLV-11^**	283877	414799	39804	127195	14483	231.1	6420	588.7	2003	215.6	324.5	22.28	85.5	6.190	0.740	0.112	30146	7158	585	890055	91.08	0.073
PLV-12^**	325101	433386	42380	134512	15140	811.7	6730	600.2	2027	219.1	321.4	22.06	82.3	5.980	1.180	0.116	28767	6884	557	961339	95.06	0.246
PLV-13^**	298788	435346	43299	138827	15912	264.9	7209	658.7	2218	242.8	371.8	26.72	107.8	8.040	0.896	0.143	33445	8917	685	943279	85.99	0.076
PLV-14^**	299058	400161	39262	124986	14294	346.3	6590	613.7	2177	246.2	383.5	28.21	110.7	8.050	1.040	0.198	169483	9229	2096	888264	86.46	0.109
PLV-15^**	287064	413673	41364	134328	15764	336.8	7165	665.1	2283	244.9	355.6	24.02	87.2	6.100	1.150	0.130	44207	5216	6349	903361	82.41	0.097
PLV-16	253463	438518	50307	177884	22376	258.4	10095	976.0	3178	336.7	496.4	35.00	140.3	9.960	1.360	0.145	604	4921	217	958073	61.75	0.053
平均值	303297	435449	43614	142504	16715	484.8	8356	735.5	2467	261.8	416.7	27.20	105.4	7.570	1.099	0.145	49344	7675	859	954441	77.98	0.130
PLV-01^***	221698	312664	29335	114138	13203	231.6	9283	537.7	2093	152.1	352.2	18.07	91.8	5.810	0.800	0.097	162839	8593	2610	703802	55.15	0.064
PLV-02^***	237931	323267	30013	117166	13119	217.8	9296	528.6	2007	146.0	329.7	16.35	82.3	5.170	0.750	0.100	115411	7993	1936	734126	58.15	0.060
PLV-03^***	220723	345000	34793	142350	17156	266.8	11073	653.1	2467	198.6	364.3	16.13	80.5	4.910	0.890	0.112	2601	3410	203	775146	51.17	0.059
PLV-04^***	257423	339496	31819	128830	14505	874.0	9696	583.1	2244	160.5	336.8	15.56	73.7	4.460	0.880	0.101	72209	9065	1471	786061	58.94	0.225
PLV-05^***	238815	332602	31450	122248	14047	283.5	9220	573.8	2291	182.7	358.2	17.76	84.2	5.070	0.850	0.098	75179	5884	1259	752179	58.07	0.076
PLV-06^***	274004	355293	37052	147894	17706	1128.1	11854	702.5	2827	208.0	454.7	25.65	128.1	9.110	2.720	0.147	17936	3841	600	849287	51.39	0.238
PLV-07^***	286992	407437	37572	163777	16912	265.2	10911	635.0	2516	197.2	431.9	23.01	123.8	7.160	1.180	0.112	162797	13334	2737	927801	61.50	0.060
PLV-08^***	274608	427673	37101	119123	13236	282.0	6672	589.8	1965	214.7	355.0	24.79	101.5	7.650	1.040	0.131	99267	8868	1646	881952	87.82	0.092
PLV-09^***	278693	460180	40236	128880	15339	237.7	7710	670.2	2175	220.8	345.6	21.28	82.9	5.740	0.850	0.133	24876	6996	628	934796	82.23	0.067
PLV-10^***	285181	457214	41423	139799	16248	645.1	8084	704.9	2293	237.6	360.4	22.14	80.7	5.450	1.030	0.127	13444	4521	386	952299	79.78	0.172
PLV-11^***	269587	500869	52849	197910	25909	640.3	12719	1197.1	4183	434.6	638.6	40.89	149.0	9.840	1.510	0.264	10388	2630	263	1067136	54.09	0.108
PLV-12^***	302492	468581	42570	139647	16770	406.0	8717	791.0	2730	285.0	430.5	27.38	105.5	7.160	1.250	0.149	40584	6436	797	983557	74.12	0.103
PLV-13^***	294579	529293	49680	171505	22091	404.0	10899	1010.2	3542	389.6	618.8	44.43	173.6	12.590	1.690	0.176	3701	4201	256	1084243	63.96	0.080
PLV-14^***	319015	448831	38926	127048	13970	771.2	7285	638.2	2103	239.6	383.7	26.43	101.8	7.320	1.010	0.150	27193	6542	609	959345	87.96	0.234
PLV-15^***	261790	460841	44266	151664	18358	480.4	9374	843.1	2791	289.7	442.0	28.19	104.0	7.240	1.310	0.138	6406	4089	273	951279	67.54	0.112
PLV-16^***	265629	457974	42431	142597	17345	222.7	8792	807.8	2733	290.0	447.7	30.06	115.1	8.090	1.430	0.133	51855	7645	962	939422	70.04	0.055
平均值	268072	414201	38845	140911	16620	459.8	9474	716.6	2560	240.4	415.6	24.88	104.9	7.048	1.199	0.136	55418	6503	1040	892652	66.37	0.113
11KL73-01	308264	434683	50587	248681	33865	3058	13905	503.1	694.0	37.58	136.6	1.530	12.9	0.540	0.280	0.049	108848	8259	2501	1094429	70.57	0.431
11KL73-02	254191	388251	44965	174017	22188	2155	7625	278.1	398.6	26.66	90.52	1.362	8.2	0.449	0.272	0.044	67702	6169	1593	894195	105.08	0.507
11KL73-03	251733	390569	45465	182978	24321	2375	8719	336.5	494.7	31.62	97.10	1.455	9.1	0.484	0.267	0.043	77070	6497	1794	907131	92.62	0.499
11KL73-04	254713	393622	45710	176985	20959	1252	7022	263.7	366.2	23.02	90.12	1.016	6.7	0.362	0.244	0.039	90641	4754	1878	901014	114.9	0.315
11KL73-05	259521	406355	46380	181620	23132	2041	8321	337.9	562.1	39.68	106.4	1.749	9.4	0.536	0.209	0.046	66536	6026	1556	928428	97.99	0.450
11KL73-10	277148	450014	53696	202210	17350	387	6256	246.1	407.4	30.26	110.7	1.810	8.8	0.525	0.230	0.058	121499	3757	2266	1007866	141.7	0.114
11KL73-07	257257	399498	46938	177570	19338	889	7142	306.3	533.5	42.18	115.9	2.615	11.9	0.786	0.282	0.045	86914	1404	1590	909644	110.5	0.231
11KL73-08	277148	450014	53696	202210	17350	387	6256	246.1	407.4	30.26	110.7	1.810	8.8	0.525	0.230	0.058	121499	3757	2266	1007866	141.7	0.114
11KL73-09	202186	311716	34495	164736	21438	1754	9781	278.0	345.9	20.19	128.7	1.060	9.5	0.392	0.179	0.034	69119	5167	1795	746889	69.69	0.370
11KL73-10	202703	323122	35031	155894	13936	462	8134	205.2	246.0	15.58	126.8	0.950	7.5	0.346	0.133	0.029	100264	2090	2076	739885	83.69	0.133
11KL73-11	195195	296076	32078	152692	21850	2357	12053	470.6	829.2	34.34	144.1	1.370	13.4	0.600	0.343	0.035	84263	7986	2371	713794	51.69	0.444
11KL73-12	185387	316431	38056	201785	23252	164	9924	309.3	393.3	23.64	169.1	1.140	9.6	0.418	0.218	0.033	62688	3126	1498	775907	70.64	0.033
11KL73-13	195289	289393	32431	158169	22562	2396	12521	499.8	874.3	36.59	138.7	1.410	13.7	0.610	0.361	0.040	77790	7361	2142	714326	49.71	0.436
11KL73-14	203526	320824	34708	163178	21182	1739	9891	286.0	362.1	20.88	128.3	0.910	9.0	0.360	0.208	0.038	82037	7107	2197	755855	69.65	0.367
11KL73-15	198462	312470	32500	151594	17172	1253	8209	222.9	262.2	15.10	113.4	0.750	7.4	0.281	0.125	0.034	89522	4701	2139	722282	80.79	0.323
11KL114-01	180793	371902	50328	217880	40509	82.7	17476	1052	1956	132.7	167.6	6.750	27.2	1.790	1.100	0.114	71787	7366	1906	882316	41.38	0.010
11KL114-02	205227	369520	46935	196380	37786	142.5	19197	1258	2441	159.7	185.9	7.780	30.6	2.070	1.260	0.140	71217	7731	1599	879273	36.77	0.016
11KL114-03	213944	408300	49779	218643	42690	109.8	22308	1329	2510	163.3	231.9	7.660	37.7	2.420	1.089	0.109	41210	5268	1046	960057	35.11	0.011
11KL114-04	208433	419952	52636	222841	38909	114.3	17968	1064	2041	141.2	228.8	7.200	34.2	2.157	0.935	0.093	1596	1248	111	964372	43.88	0.013
11KL114-05	186675	383903	51194	214963	42899	68.7	20226	1173	2246	148.2	231.2	7.520	36.6	2.390	1.051	0.089	56780	3973	1247	903773	36.55	0.007
11KL114-06	166006	385024	56326	253636	38884	42.9	15297	849	1613	116.5	216.0	6.450	30.2	2.027	0.719	0.095	34433	13364	1469	918050	49.64	0.005
11KL114-07	193986	419239	54702	227159	32432	62.3	12591	654	1209	86.8	180.8	4.880	23.1	1.451	0.486	0.072	38704	4094	931	942332	62.88	0.009
11KL114-08	193896	406507	54082	242229	46886	94.7	21366	1165	2111	134.8	214.4	6.030	32.3	2.043	1.047	0.093	9560	5643	543	968725	37.70	0.009
11KL114-09	214514	409719	50985	219892	42440	99.1	21392	1259	2293	149.5	225.1	7.190	35.6	2.240	0.967	0.112	23590	9587	1061	963012	36.97	0.010
11KL114-10	223544	417139	50902	215189	40569	107.7	21029	1238	2340	153.8	225.6	7.090	34.3	2.206	1.019	0.098	6770	2024	254	972481	37.85	0.011
11KL114-11	226431	428386	54542	235169	45699	110.8	23121	1351	2580	169.4	246.1	7.580	37.3	2.310	1.151	0.120	16371	7695	800	1017852	35.99	0.010
11KL114-12	175349	402316	58811	272586	48016	108.2	19334	1104	2137	152.5	256.2	8.120	37.5	2.450	0.758	0.097	10200	9078	785	980219	41.56	0.011
11KL114-13	205227	369520	46935	196380	37786	142.5	19197	1258	2441	159.7	185.9	7.780	30.6	2.070	1.260	0.140	71217	7731	1599	879273	36.77	0.016
11KL114-14	180793	371902	50328	217880	40509	82.7	17476	1052	1956	132.7	167.6	6.750	27.2	1.790	1.100	0.114	71787	7366	1582	882316	41.38	0.010
11KL114-15	192732	376571	48904	212351	41807	85.5	19447	1249	2418	163.5	195.2	8.090	32.2	2.170	1.070	0.090	54134	8954	1405	895967	37.10	0.010
11KL114-16	206146	390848	49526	206619	39776	98.6	19128	1193	2192	146.4	173.6	7.090	28.4	1.870	0.910	0.097	28517	4899	734	915884	39.05	0.010
11KL114-17	168791	365349	48572	203881	33932	53.8	13200	800	1562	113.5	153.4	6.310	25.2	1.690	0.740	0.112	116823	13367	2675	836441	51.73	0.010
11KL114-18	176728	376192	49305	208512	36065	54.2	14012	807	1505	105.0	141.4	5.550	22.5	1.470	0.619	0.071	77591	3826	1470	863456	51.01	0.010

分析点号	同位素比值				年龄 (Ma)
分析点号	²⁰⁷Pb/²⁰⁶Pb(1σ)	²⁰⁷Pb/²³⁵U(1σ)	²⁰⁶Pb/²³⁸U(1σ)	²⁰⁸Pb/²³²Th(1σ)	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)
PLV-01^*	0.05341(0.00061)	0.39370(0.00422)	0.05339(0.00051)	0.01686(0.00013)	346(11)	337(3)	335(3)	338(3)
PLV-02^*	0.05321(0.00062)	0.38967(0.00429)	0.05311(0.00051)	0.01674(0.00012)	338(11)	334(3)	334(3)	336(2)
PLV-03^*	0.05293(0.00064)	0.39051(0.00446)	0.05304(0.00051)	0.01691(0.00012)	326(12)	335(3)	333(3)	339(2)
PLV-04^*	0.05307(0.00066)	0.39282(0.00470)	0.05316(0.00052)	0.01679(0.00014)	332(12)	336(3)	334(3)	337(3)
PLV-05^*	0.05306(0.00061)	0.39014(0.00426)	0.05336(0.00051)	0.01675(0.00012)	331(11)	334(3)	335(3)	336(2)
PLV-06^*	0.05322(0.00076)	0.39099(0.00518)	0.05318(0.00051)	0.01686(0.00017)	338(14)	335(4)	334(3)	338(3)
PLV-07^*	0.05315(0.00068)	0.39142(0.00478)	0.05372(0.00052)	0.01691(0.00030)	335(13)	335(3)	337(3)	339(6)
PLV-08^*	0.05311(0.00062)	0.39139(0.00431)	0.05334(0.00051)	0.01677(0.00012)	333(11)	335(3)	335(3)	336(2)
PLV-09^*	0.05297(0.00063)	0.39493(0.00441)	0.05377(0.00052)	0.01680(0.00021)	328(11)	338(3)	338(3)	337(4)
PLV-10^*	0.05304(0.00062)	0.39448(0.00433)	0.05374(0.00051)	0.01691(0.00013)	331(11)	338(3)	337(3)	339(3)
PLV-01^**	0.05313(0.00078)	0.39816(0.00539)	0.05355(0.00053)	0.01665(0.00011)	334(15)	340(4)	336(3)	334(11)
PLV-02^**	0.05333(0.00075)	0.38066(0.00524)	0.05379(0.00053)	0.01649(0.00010)	343(15)	328(4)	338(3)	331(10)
PLV-03^**	0.05304(0.00083)	0.39444(0.00580)	0.05394(0.00054)	0.01686(0.00018)	331(17)	338(4)	339(3)	338(11)
PLV-04^**	0.05115(0.00077)	0.38044(0.00536)	0.05395(0.00053)	0.01657(0.00011)	248(16)	327(4)	339(3)	332(10)
PLV-05^**	0.05319(0.00078)	0.39509(0.00542)	0.05388(0.00053)	0.01678(0.00011)	337(15)	338(4)	338(3)	336(25)
PLV-06^**	0.05323(0.00090)	0.39135(0.00628)	0.05377(0.00055)	0.01679(0.00011)	339(19)	335(5)	338(3)	337(19)
PLV-07^**	0.05238(0.00081)	0.39208(0.00559)	0.05351(0.00053)	0.01662(0.00042)	302(16)	336(4)	336(3)	333(15)
PLV-08^**	0.05305(0.00080)	0.38931(0.00557)	0.05400(0.00054)	0.01683(0.00010)	331(16)	334(4)	339(3)	337(10)
PLV-09^**	0.05348(0.00098)	0.38571(0.00680)	0.05376(0.00054)	0.01651(0.00013)	349(22)	331(5)	338(3)	331(10)
PLV-10^**	0.05276(0.00086)	0.38612(0.00601)	0.05354(0.00054)	0.01667(0.00010)	318(18)	332(4)	336(3)	334(10)
PLV-11^**	0.05306(0.00063)	0.39126(0.00472)	0.05330(0.00056)	0.01676(0.00012)	331(12)	335(3)	335(3)	336(73)
PLV-12^**	0.05289(0.00064)	0.38961(0.00481)	0.05382(0.00056)	0.01653(0.00012)	324(13)	334(4)	338(3)	331(58)
PLV-13^**	0.05312(0.00057)	0.39399(0.00434)	0.05379(0.00056)	0.01662(0.00012)	334(11)	337(3)	338(3)	333(14)
PLV-14^**	0.05297(0.00057)	0.38886(0.00439)	0.05295(0.00057)	0.01673(0.00012)	328(12)	334(3)	333(3)	335(46)
PLV-15^**	0.05273(0.00067)	0.39126(0.00501)	0.05332(0.00056)	0.01698(0.00012)	317(13)	335(4)	335(3)	340(25)
PLV-16^**	0.05302(0.00059)	0.38959(0.00480)	0.05373(0.00060)	0.01684(0.00020)	330(12)	334(4)	337(4)	338(62)
PLV-01^***	0.05359(0.00100)	0.39157(0.00696)	0.05369(0.00055)	0.01675(0.00014)	354(22)	336(5)	337(3)	336(3)
PLV-02^***	0.05299(0.00077)	0.38965(0.00531)	0.05363(0.00052)	0.01686(0.00011)	328(15)	334(4)	337(3)	338(2)
PLV-03^***	0.05199(0.00081)	0.38618(0.00563)	0.05382(0.00053)	0.01674(0.00011)	285(17)	332(4)	338(3)	336(2)
PLV-04^***	0.05296(0.00098)	0.38561(0.00677)	0.05334(0.00054)	0.01689(0.00013)	327(22)	331(5)	335(3)	339(3)
PLV-05^***	0.05316(0.00096)	0.38932(0.00669)	0.05381(0.00055)	0.01683(0.00011)	336(21)	334(5)	338(3)	337(2)
PLV-06^***	0.05269(0.00101)	0.39116(0.00668)	0.05294(0.00053)	0.01665(0.00012)	315(21)	335(5)	333(3)	334(2)
PLV-07^***	0.05355(0.00088)	0.39670(0.00612)	0.05372(0.00054)	0.01677(0.00014)	352(18)	339(4)	337(3)	336(3)
PLV-08^***	0.05318(0.00069)	0.38049(0.00409)	0.05275(0.00043)	0.01679(0.00009)	336(11)	327(3)	331(3)	337(2)
PLV-09^***	0.05298(0.00083)	0.38495(0.00441)	0.05293(0.00038)	0.01661(0.00009)	328(14)	331(3)	332(2)	333(2)
PLV-10^***	0.05325(0.00072)	0.38560(0.00412)	0.05284(0.00041)	0.01671(0.00009)	339(12)	331(3)	332(3)	335(2)
PLV-11^***	0.05326(0.00074)	0.38804(0.00438)	0.05337(0.00042)	0.01643(0.00009)	340(13)	333(3)	335(3)	329(2)
PLV-12^***	0.05304(0.00072)	0.38499(0.00422)	0.05297(0.00042)	0.01647(0.00009)	331(12)	331(3)	333(3)	330(2)
PLV-13^***	0.05349(0.00073)	0.39081(0.00430)	0.05292(0.00042)	0.01675(0.00009)	350(12)	335(3)	332(3)	336(2)
PLV-14^***	0.05297(0.00128)	0.38514(0.00803)	0.05323(0.00045)	0.01682(0.00010)	328(32)	331(6)	334(3)	337(2)
PLV-15^***	0.05323(0.00074)	0.38688(0.00435)	0.05355(0.00042)	0.01663(0.00009)	339(13)	332(3)	336(3)	333(2)
PLV-16^***	0.05335(0.00072)	0.37946(0.00415)	0.05287(0.00041)	0.01676(0.00009)	344(12)	327(3)	332(3)	336(2)
11KL73-01	0.0569(0.0014)	0.6354(0.0148)	0.0807(0.0009)	0.0245(0.0002)	486(31)	499(9)	501(5)	490(3)
11KL73-02	0.0572(0.0010)	0.6339(0.0101)	0.0800(0.0008)	0.0247(0.0002)	497(18)	499(6)	496(5)	493(3)
11KL73-03	0.0571(0.0009)	0.6374(0.0095)	0.0803(0.0008)	0.0245(0.0002)	494(16)	501(6)	498(5)	489(3)
11KL73-04	0.0568(0.0011)	0.6363(0.0109)	0.0799(0.0008)	0.0243(0.0002)	483(20)	500(7)	495(5)	485(3)
11KL73-05	0.0563(0.0011)	0.6283(0.0111)	0.0800(0.0008)	0.0249(0.0002)	464(21)	495(7)	496(5)	497(3)
11KL73-06	0.0555(0.0012)	0.6366(0.0124)	0.0795(0.0009)	0.0252(0.0002)	432(25)	500(8)	493(5)	503(3)
11KL73-07	0.0553(0.0012)	0.6291(0.0125)	0.0802(0.0009)	0.0247(0.0002)	425(25)	496(8)	497(5)	493(3)
11KL73-08	0.0548(0.0012)	0.6364(0.0115)	0.0788(0.0008)	0.0251(0.0002)	405(22)	500(7)	489(5)	501(3)
11KL73-09	0.0553(0.0008)	0.6312(0.0069)	0.0796(0.0006)	0.0249(0.0001)	424(12)	497(4)	494(4)	497(3)
11KL73-10	0.0563(0.0008)	0.6247(0.0072)	0.0799(0.0007)	0.0252(0.0002)	465(12)	493(5)	496(4)	504(3)
11KL73-11	0.0550(0.0007)	0.6278(0.0068)	0.0809(0.0007)	0.0252(0.0002)	411(11)	495(4)	501(4)	503(3)
11KL73-12	0.0562(0.0008)	0.6349(0.0071)	0.0798(0.0006)	0.0250(0.0001)	459(12)	499(4)	495(4)	499(3)
11KL73-13	0.0560(0.0008)	0.6330(0.0071)	0.0796(0.0007)	0.0250(0.0001)	452(12)	498(4)	494(4)	499(3)
11KL73-14	0.0558(0.0008)	0.6355(0.0070)	0.0790(0.0007)	0.0250(0.0001)	443(11)	499(4)	490(4)	498(3)
11KL73-15	0.0561(0.0008)	0.6243(0.0075)	0.0796(0.0007)	0.0252(0.0002)	455(13)	493(5)	494(4)	504(3)
11KL114-01	0.0570(0.0009)	0.6561(0.0090)	0.0823(0.0008)	0.0251(0.0002)	491(15)	512(6)	510(5)	501(4)
11KL114-02	0.0571(0.0009)	0.6624(0.0091)	0.0819(0.0008)	0.0251(0.0002)	495(15)	516(6)	508(5)	500(4)
11KL114-03	0.0571(0.0008)	0.6550(0.0084)	0.0822(0.0008)	0.0258(0.0002)	493(13)	512(5)	509(5)	515(3)
11KL114-04	0.0567(0.0013)	0.6582(0.0041)	0.0815(0.0009)	0.0257(0.0003)	480(14)	513(3)	505(6)	513(6)
11KL114-05	0.0567(0.0009)	0.6607(0.0094)	0.0825(0.0008)	0.0255(0.0002)	481(16)	515(6)	511(5)	508(3)
11KL114-06	0.0579(0.0008)	0.6614(0.0077)	0.0817(0.0008)	0.0262(0.0002)	525(12)	515(5)	506(5)	523(3)
11KL114-07	0.0573(0.0009)	0.6604(0.0088)	0.0817(0.0008)	0.0259(0.0002)	502(14)	515(5)	506(5)	518(3)
11KL114-08	0.0578(0.0008)	0.6643(0.0085)	0.0821(0.0008)	0.0261(0.0002)	521(13)	517(5)	509(5)	520(3)
11KL114-09	0.0577(0.0008)	0.6581(0.0086)	0.0816(0.0008)	0.0259(0.0002)	518(14)	513(5)	506(5)	516(3)
11KL114-10	0.0572(0.0010)	0.6587(0.0107)	0.0823(0.0008)	0.0258(0.0002)	497(19)	514(7)	510(5)	514(4)
11KL114-11	0.0577(0.0009)	0.6592(0.0089)	0.0824(0.0008)	0.0258(0.0002)	520(14)	514(5)	511(5)	515(3)
11KL114-12	0.0575(0.0008)	0.6578(0.0083)	0.0820(0.0008)	0.0260(0.0002)	509(13)	513(5)	508(5)	519(3)
11KL114-13	0.0571(0.0006)	0.6591(0.0071)	0.0824(0.0009)	0.0258(0.0002)	497(11)	514(4)	510(5)	514(4)
11KL114-14	0.0578(0.0006)	0.6630(0.0071)	0.0827(0.0009)	0.0259(0.0002)	523(11)	516(4)	512(5)	516(4)
11KL114-15	0.0571(0.0006)	0.6589(0.0071)	0.0824(0.0009)	0.0260(0.0002)	497(11)	514(4)	510(5)	520(4)
11KL114-16	0.0577(0.0006)	0.6613(0.0073)	0.0823(0.0009)	0.0258(0.0002)	518(11)	515(4)	510(5)	515(4)
11KL114-17	0.0576(0.0006)	0.6600(0.0069)	0.0817(0.0009)	0.0256(0.0002)	514(11)	515(4)	506(5)	510(4)
11KL114-18	0.0577(0.0006)	0.6574(0.0073)	0.0827(0.0009)	0.0254(0.0002)	520(11)	513(4)	512(5)	507(4)

分析点号	同位素比值				年龄 (Ma)
分析点号	²⁰⁷Pb/²⁰⁶Pb(1σ)	²⁰⁷Pb/²³⁵U(1σ)	²⁰⁶Pb/²³⁸U(1σ)	²⁰⁸Pb/²³²Th(1σ)	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)
PLV-01^*	0.05341(0.00061)	0.39370(0.00422)	0.05339(0.00051)	0.01686(0.00013)	346(11)	337(3)	335(3)	338(3)
PLV-02^*	0.05321(0.00062)	0.38967(0.00429)	0.05311(0.00051)	0.01674(0.00012)	338(11)	334(3)	334(3)	336(2)
PLV-03^*	0.05293(0.00064)	0.39051(0.00446)	0.05304(0.00051)	0.01691(0.00012)	326(12)	335(3)	333(3)	339(2)
PLV-04^*	0.05307(0.00066)	0.39282(0.00470)	0.05316(0.00052)	0.01679(0.00014)	332(12)	336(3)	334(3)	337(3)
PLV-05^*	0.05306(0.00061)	0.39014(0.00426)	0.05336(0.00051)	0.01675(0.00012)	331(11)	334(3)	335(3)	336(2)
PLV-06^*	0.05322(0.00076)	0.39099(0.00518)	0.05318(0.00051)	0.01686(0.00017)	338(14)	335(4)	334(3)	338(3)
PLV-07^*	0.05315(0.00068)	0.39142(0.00478)	0.05372(0.00052)	0.01691(0.00030)	335(13)	335(3)	337(3)	339(6)
PLV-08^*	0.05311(0.00062)	0.39139(0.00431)	0.05334(0.00051)	0.01677(0.00012)	333(11)	335(3)	335(3)	336(2)
PLV-09^*	0.05297(0.00063)	0.39493(0.00441)	0.05377(0.00052)	0.01680(0.00021)	328(11)	338(3)	338(3)	337(4)
PLV-10^*	0.05304(0.00062)	0.39448(0.00433)	0.05374(0.00051)	0.01691(0.00013)	331(11)	338(3)	337(3)	339(3)
PLV-01^**	0.05313(0.00078)	0.39816(0.00539)	0.05355(0.00053)	0.01665(0.00011)	334(15)	340(4)	336(3)	334(11)
PLV-02^**	0.05333(0.00075)	0.38066(0.00524)	0.05379(0.00053)	0.01649(0.00010)	343(15)	328(4)	338(3)	331(10)
PLV-03^**	0.05304(0.00083)	0.39444(0.00580)	0.05394(0.00054)	0.01686(0.00018)	331(17)	338(4)	339(3)	338(11)
PLV-04^**	0.05115(0.00077)	0.38044(0.00536)	0.05395(0.00053)	0.01657(0.00011)	248(16)	327(4)	339(3)	332(10)
PLV-05^**	0.05319(0.00078)	0.39509(0.00542)	0.05388(0.00053)	0.01678(0.00011)	337(15)	338(4)	338(3)	336(25)
PLV-06^**	0.05323(0.00090)	0.39135(0.00628)	0.05377(0.00055)	0.01679(0.00011)	339(19)	335(5)	338(3)	337(19)
PLV-07^**	0.05238(0.00081)	0.39208(0.00559)	0.05351(0.00053)	0.01662(0.00042)	302(16)	336(4)	336(3)	333(15)
PLV-08^**	0.05305(0.00080)	0.38931(0.00557)	0.05400(0.00054)	0.01683(0.00010)	331(16)	334(4)	339(3)	337(10)
PLV-09^**	0.05348(0.00098)	0.38571(0.00680)	0.05376(0.00054)	0.01651(0.00013)	349(22)	331(5)	338(3)	331(10)
PLV-10^**	0.05276(0.00086)	0.38612(0.00601)	0.05354(0.00054)	0.01667(0.00010)	318(18)	332(4)	336(3)	334(10)
PLV-11^**	0.05306(0.00063)	0.39126(0.00472)	0.05330(0.00056)	0.01676(0.00012)	331(12)	335(3)	335(3)	336(73)
PLV-12^**	0.05289(0.00064)	0.38961(0.00481)	0.05382(0.00056)	0.01653(0.00012)	324(13)	334(4)	338(3)	331(58)
PLV-13^**	0.05312(0.00057)	0.39399(0.00434)	0.05379(0.00056)	0.01662(0.00012)	334(11)	337(3)	338(3)	333(14)
PLV-14^**	0.05297(0.00057)	0.38886(0.00439)	0.05295(0.00057)	0.01673(0.00012)	328(12)	334(3)	333(3)	335(46)
PLV-15^**	0.05273(0.00067)	0.39126(0.00501)	0.05332(0.00056)	0.01698(0.00012)	317(13)	335(4)	335(3)	340(25)
PLV-16^**	0.05302(0.00059)	0.38959(0.00480)	0.05373(0.00060)	0.01684(0.00020)	330(12)	334(4)	337(4)	338(62)
PLV-01^***	0.05359(0.00100)	0.39157(0.00696)	0.05369(0.00055)	0.01675(0.00014)	354(22)	336(5)	337(3)	336(3)
PLV-02^***	0.05299(0.00077)	0.38965(0.00531)	0.05363(0.00052)	0.01686(0.00011)	328(15)	334(4)	337(3)	338(2)
PLV-03^***	0.05199(0.00081)	0.38618(0.00563)	0.05382(0.00053)	0.01674(0.00011)	285(17)	332(4)	338(3)	336(2)
PLV-04^***	0.05296(0.00098)	0.38561(0.00677)	0.05334(0.00054)	0.01689(0.00013)	327(22)	331(5)	335(3)	339(3)
PLV-05^***	0.05316(0.00096)	0.38932(0.00669)	0.05381(0.00055)	0.01683(0.00011)	336(21)	334(5)	338(3)	337(2)
PLV-06^***	0.05269(0.00101)	0.39116(0.00668)	0.05294(0.00053)	0.01665(0.00012)	315(21)	335(5)	333(3)	334(2)
PLV-07^***	0.05355(0.00088)	0.39670(0.00612)	0.05372(0.00054)	0.01677(0.00014)	352(18)	339(4)	337(3)	336(3)
PLV-08^***	0.05318(0.00069)	0.38049(0.00409)	0.05275(0.00043)	0.01679(0.00009)	336(11)	327(3)	331(3)	337(2)
PLV-09^***	0.05298(0.00083)	0.38495(0.00441)	0.05293(0.00038)	0.01661(0.00009)	328(14)	331(3)	332(2)	333(2)
PLV-10^***	0.05325(0.00072)	0.38560(0.00412)	0.05284(0.00041)	0.01671(0.00009)	339(12)	331(3)	332(3)	335(2)
PLV-11^***	0.05326(0.00074)	0.38804(0.00438)	0.05337(0.00042)	0.01643(0.00009)	340(13)	333(3)	335(3)	329(2)
PLV-12^***	0.05304(0.00072)	0.38499(0.00422)	0.05297(0.00042)	0.01647(0.00009)	331(12)	331(3)	333(3)	330(2)
PLV-13^***	0.05349(0.00073)	0.39081(0.00430)	0.05292(0.00042)	0.01675(0.00009)	350(12)	335(3)	332(3)	336(2)
PLV-14^***	0.05297(0.00128)	0.38514(0.00803)	0.05323(0.00045)	0.01682(0.00010)	328(32)	331(6)	334(3)	337(2)
PLV-15^***	0.05323(0.00074)	0.38688(0.00435)	0.05355(0.00042)	0.01663(0.00009)	339(13)	332(3)	336(3)	333(2)
PLV-16^***	0.05335(0.00072)	0.37946(0.00415)	0.05287(0.00041)	0.01676(0.00009)	344(12)	327(3)	332(3)	336(2)
11KL73-01	0.0569(0.0014)	0.6354(0.0148)	0.0807(0.0009)	0.0245(0.0002)	486(31)	499(9)	501(5)	490(3)
11KL73-02	0.0572(0.0010)	0.6339(0.0101)	0.0800(0.0008)	0.0247(0.0002)	497(18)	499(6)	496(5)	493(3)
11KL73-03	0.0571(0.0009)	0.6374(0.0095)	0.0803(0.0008)	0.0245(0.0002)	494(16)	501(6)	498(5)	489(3)
11KL73-04	0.0568(0.0011)	0.6363(0.0109)	0.0799(0.0008)	0.0243(0.0002)	483(20)	500(7)	495(5)	485(3)
11KL73-05	0.0563(0.0011)	0.6283(0.0111)	0.0800(0.0008)	0.0249(0.0002)	464(21)	495(7)	496(5)	497(3)
11KL73-06	0.0555(0.0012)	0.6366(0.0124)	0.0795(0.0009)	0.0252(0.0002)	432(25)	500(8)	493(5)	503(3)
11KL73-07	0.0553(0.0012)	0.6291(0.0125)	0.0802(0.0009)	0.0247(0.0002)	425(25)	496(8)	497(5)	493(3)
11KL73-08	0.0548(0.0012)	0.6364(0.0115)	0.0788(0.0008)	0.0251(0.0002)	405(22)	500(7)	489(5)	501(3)
11KL73-09	0.0553(0.0008)	0.6312(0.0069)	0.0796(0.0006)	0.0249(0.0001)	424(12)	497(4)	494(4)	497(3)
11KL73-10	0.0563(0.0008)	0.6247(0.0072)	0.0799(0.0007)	0.0252(0.0002)	465(12)	493(5)	496(4)	504(3)
11KL73-11	0.0550(0.0007)	0.6278(0.0068)	0.0809(0.0007)	0.0252(0.0002)	411(11)	495(4)	501(4)	503(3)
11KL73-12	0.0562(0.0008)	0.6349(0.0071)	0.0798(0.0006)	0.0250(0.0001)	459(12)	499(4)	495(4)	499(3)
11KL73-13	0.0560(0.0008)	0.6330(0.0071)	0.0796(0.0007)	0.0250(0.0001)	452(12)	498(4)	494(4)	499(3)
11KL73-14	0.0558(0.0008)	0.6355(0.0070)	0.0790(0.0007)	0.0250(0.0001)	443(11)	499(4)	490(4)	498(3)
11KL73-15	0.0561(0.0008)	0.6243(0.0075)	0.0796(0.0007)	0.0252(0.0002)	455(13)	493(5)	494(4)	504(3)
11KL114-01	0.0570(0.0009)	0.6561(0.0090)	0.0823(0.0008)	0.0251(0.0002)	491(15)	512(6)	510(5)	501(4)
11KL114-02	0.0571(0.0009)	0.6624(0.0091)	0.0819(0.0008)	0.0251(0.0002)	495(15)	516(6)	508(5)	500(4)
11KL114-03	0.0571(0.0008)	0.6550(0.0084)	0.0822(0.0008)	0.0258(0.0002)	493(13)	512(5)	509(5)	515(3)
11KL114-04	0.0567(0.0013)	0.6582(0.0041)	0.0815(0.0009)	0.0257(0.0003)	480(14)	513(3)	505(6)	513(6)
11KL114-05	0.0567(0.0009)	0.6607(0.0094)	0.0825(0.0008)	0.0255(0.0002)	481(16)	515(6)	511(5)	508(3)
11KL114-06	0.0579(0.0008)	0.6614(0.0077)	0.0817(0.0008)	0.0262(0.0002)	525(12)	515(5)	506(5)	523(3)
11KL114-07	0.0573(0.0009)	0.6604(0.0088)	0.0817(0.0008)	0.0259(0.0002)	502(14)	515(5)	506(5)	518(3)
11KL114-08	0.0578(0.0008)	0.6643(0.0085)	0.0821(0.0008)	0.0261(0.0002)	521(13)	517(5)	509(5)	520(3)
11KL114-09	0.0577(0.0008)	0.6581(0.0086)	0.0816(0.0008)	0.0259(0.0002)	518(14)	513(5)	506(5)	516(3)
11KL114-10	0.0572(0.0010)	0.6587(0.0107)	0.0823(0.0008)	0.0258(0.0002)	497(19)	514(7)	510(5)	514(4)
11KL114-11	0.0577(0.0009)	0.6592(0.0089)	0.0824(0.0008)	0.0258(0.0002)	520(14)	514(5)	511(5)	515(3)
11KL114-12	0.0575(0.0008)	0.6578(0.0083)	0.0820(0.0008)	0.0260(0.0002)	509(13)	513(5)	508(5)	519(3)
11KL114-13	0.0571(0.0006)	0.6591(0.0071)	0.0824(0.0009)	0.0258(0.0002)	497(11)	514(4)	510(5)	514(4)
11KL114-14	0.0578(0.0006)	0.6630(0.0071)	0.0827(0.0009)	0.0259(0.0002)	523(11)	516(4)	512(5)	516(4)
11KL114-15	0.0571(0.0006)	0.6589(0.0071)	0.0824(0.0009)	0.0260(0.0002)	497(11)	514(4)	510(5)	520(4)
11KL114-16	0.0577(0.0006)	0.6613(0.0073)	0.0823(0.0009)	0.0258(0.0002)	518(11)	515(4)	510(5)	515(4)
11KL114-17	0.0576(0.0006)	0.6600(0.0069)	0.0817(0.0009)	0.0256(0.0002)	514(11)	515(4)	506(5)	510(4)
11KL114-18	0.0577(0.0006)	0.6574(0.0073)	0.0827(0.0009)	0.0254(0.0002)	520(11)	513(4)	512(5)	507(4)

分析点号		同位素比值																年龄(Ma)
分析点号		²⁰⁷Pb/²⁰⁶Pb(1σ)				²⁰⁷Pb/²³⁵U(1σ)				²⁰⁶Pb/²³⁸U(1σ)				²⁰⁸Pb/²³²Th(1σ)				²⁰⁷Pb/²⁰⁶Pb(1σ)			²⁰⁷Pb/²³⁵U(1σ)			²⁰⁶Pb/²³⁸U(1σ)			²⁰⁸Pb/²³²Th(1σ)
PLV-01		0.05324(0.00062)				0.39448(0.00433)				0.05374(0.00051)				0.01741(0.00013)				339(11)			338(3)			337(3)			349(3)
PLV-02		0.05327(0.00063)				0.39493(0.00441)				0.05377(0.00052)				0.02008(0.00021)				340(11)			338(3)			338(3)			402(4)
PLV-03		0.05321(0.00062)				0.39139(0.00431)				0.05334(0.00051)				0.01747(0.00012)				338(11)			335(3)			335(3)			350(2)
PLV-04		0.05285(0.00068)				0.39142(0.00478)				0.05372(0.00052)				0.01891(0.00030)				322(13)			335(3)			337(3)			379(6)
PLV-05		0.05302(0.00061)				0.39014(0.00426)				0.05336(0.00051)				0.01675(0.00012)				330(11)			334(3)			335(3)			336(2)
PLV-06		0.05313(0.00064)				0.38851(0.00446)				0.05304(0.00051)				0.01631(0.00012)				334(12)			333(3)			333(3)			327(2)
PLV-07		0.05347(0.00077)				0.39807(0.00539)				0.05400(0.00051)				0.01813(0.00012)				349(15)			340(4)			339(3)			363(2)
PLV-08		0.05393(0.00078)				0.39816(0.00539)				0.05355(0.00053)				0.01645(0.00011)				368(15)			340(4)			336(3)			330(2)
PLV-09		0.05304(0.00083)				0.39444(0.00580)				0.05394(0.00054)				0.01616(0.00018)				331(17)			338(4)			339(3)			324(4)
PLV-10		0.05319(0.00078)				0.39509(0.00542)				0.05388(0.00053)				0.01618(0.00011)				337(15)			338(4)			338(3)			324(2)
PLV-11		0.05373(0.00090)				0.39835(0.00628)				0.05377(0.00055)				0.01579(0.00011)				360(18)			340(5)			338(3)			317(2)
PLV-12		0.05368(0.00081)				0.39608(0.00559)				0.05351(0.00053)				0.01662(0.00042)				358(16)			339(4)			336(3)			333(8)
PLV-13		0.05312(0.00057)				0.39399(0.00434)				0.05379(0.00056)				0.01662(0.00012)				334(11)			337(3)			338(3)			333(2)
PLV-14		0.05355(0.00088)				0.39670(0.00612)				0.05372(0.00054)				0.01647(0.00014)				352(18)			339(4)			337(3)			330(3)
样品号	La		Ce	Pr	Nd		Sm	Eu	Gd		Tb	Dy	Ho		Er	Tm	Yb	Lu	Hf	Ta		Th	U	Pb	ΣREE	LREE/ HREE	δEu
PLV-01	356452		432596	42415	131076		14679	827.0	6308		577.9	2015	219.8		349.1	24.70	99.0	7.68	0.87	0.176		67246	8945	1038	987645	101.87	0.263
PLV-02	333307		402413	40463	128327		15190	614.7	6665		633.6	2184	241.8		365.8	24.06	89.1	6.19	0.94	0.208		65187	9502	1060	930524	90.14	0.187
PLV-03	281308		431158	44935	150843		18543	301.3	8843		738.7	2511	274.3		425.4	29.55	119.4	8.87	0.93	0.187		479	4826	206	940039	71.59	0.072
PLV-04	300597		406568	40903	129505		15143	326.8	6634		617.4	2121	228.4		344.3	23.27	83.8	5.96	0.71	0.155		75465	6167	1061	903100	88.79	0.100
PLV-05	273418		446492	49080	166722		21978	237.1	10661		921.6	3075	325.6		464.2	29.97	112.2	8.11	1.29	0.232		802	5791	250	973524	61.42	0.047
PLV-06	290600		429077	43248	138103		15856	220.8	6806		635.0	2107	227.0		348.0	22.92	91.4	6.58	0.87	0.237		15218	7342	467	927349	89.52	0.065
PLV-07	581908		733072	69529	278004		30733	519.0	14907		1170.4	4703	349.2		719.6	39.50	194.4	12.59	1.57	0.220		411411	17465	5170	1715861	76.66	0.074
PLV-08	298788		435346	43299	138827		15912	264.9	7209		658.7	2218	242.8		371.8	26.72	107.8	8.04	0.90	0.143		33445	8917	684	943279	85.99	0.076
PLV-09	333371		439431	41404	135143		14880	892.2	7845		644.5	2169	230.6		391.4	25.34	99.1	7.49	0.87	0.116		24362	6629	572	976534	84.57	0.252
PLV-10	284466		448027	45890	150811		17965	256.1	9581		811.1	2656	271.1		436.1	25.60	100.2	6.94	1.15	0.172		3445	7065	353	961303	68.22	0.060
PLV-11	324258		432502	41920	136516		15958	707.7	8498		737.6	2467	259.3		419.2	25.58	93.7	6.53	0.99	0.138		44949	8276	875	964369	76.10	0.186
PLV-12	307579		434269	42676	136633		15774	376.2	8367		737.4	2492	265.0		428.6	27.05	103.8	7.27	1.21	0.163		62611	7293	1014	949735	75.42	0.100
PLV-13	273798		454049	49091	170376		21714	318.6	11387		1036.9	3523	380.3		634.6	42.64	175.5	13.00	1.50	0.214		536	9419	423	986540	56.38	0.062
PLV-14	286992		407437	37572	163777		16912	265.2	10911		635.0	2516	197.2		431.9	23.01	123.8	7.16	1.18	0.112		162797	13334	2737	927801	61.50	0.060
平均值	323346		452317	45173	153905		17945	437.7	8901		754.0	2626	265.2		437.9	27.85	113.8	8.03	1.07	0.177		69140	8641	1137	1006257	77.73	0.114

LA-ICP-MS独居石的U(Th)-Pb年龄精确测定方法及地质意义探究

LA-ICP-MS Monazite U(Th)-Pb Dating and Geological Applications

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分析点号	同位素比值				年龄(Ma)
分析点号	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)
KL114-01	0.05788(0.00113)	0.65159(0.01339)	0.08163(0.00110)	0.02345(0.00086)	525(23)	509(8)	506(7)	469(17)
KL114-02	0.05948(0.00149)	0.67259(0.01724)	0.08199(0.00115)	0.02211(0.00053)	585(32)	522(10)	508(7)	442(10)
KL114-03	0.05830(0.00113)	0.66128(0.01343)	0.08225(0.00110)	0.01520(0.00135)	541(23)	515(8)	510(7)	305(27)
KL114-04	0.05769(0.00107)	0.65744(0.01290)	0.08263(0.00110)	0.02236(0.00165)	518(22)	513(8)	512(7)	447(33)
KL114-05	0.05723(0.00143)	0.65045(0.01664)	0.08241(0.00113)	0.02196(0.00047)	500(33)	509(10)	510(7)	439(9)
KL114-06	0.05970(0.00115)	0.68066(0.01379)	0.08267(0.00111)	0.02149(0.00172)	593(22)	527(8)	512(7)	430(34)
KL114-07	0.05765(0.00109)	0.65621(0.01306)	0.08253(0.00110)	0.02218(0.00059)	516(22)	512(8)	511(7)	443(12)
KL114-08	0.06116(0.00121)	0.69521(0.01440)	0.08243(0.00111)	0.02543(0.00038)	586(54)	524(8)	510(6)	507(8)
KL114-09	0.05857(0.00117)	0.66701(0.01395)	0.08258(0.00112)	0.01991(0.00253)	551(24)	519(8)	512(7)	398(50)
KL114-10	0.06032(0.00117)	0.68306(0.01395)	0.08211(0.00110)	0.02476(0.00153)	615(23)	529(8)	509(7)	494(30)
KL114-11	0.05902(0.00118)	0.68105(0.01426)	0.08367(0.00113)	0.02286(0.00307)	568(24)	527(9)	518(7)	457(61)
KL114-12	0.05846(0.00117)	0.66808(0.01398)	0.08287(0.00112)	0.02063(0.00155)	547(24)	520(9)	513(7)	413(31)
KL114-13	0.05832(0.00128)	0.66586(0.01514)	0.08279(0.00113)	0.02242(0.00054)	542(27)	518(9)	513(7)	448(11)
KL114-14	0.05892(0.00113)	0.66959(0.01350)	0.08240(0.00110)	0.02154(0.00049)	564(22)	520(8)	510(7)	431(10)
KL114-15	0.05886(0.00114)	0.67333(0.01369)	0.08295(0.00111)	0.02205(0.00054)	562(23)	523(8)	514(7)	441(11)
KL114-16	0.06313(0.00122)	0.69716(0.01416)	0.08007(0.00107)	0.02211(0.00049)	713(22)	537(8)	497(6)	442(10)
KL114-17	0.05790(0.00116)	0.66068(0.01385)	0.08275(0.00112)	0.02281(0.00128)	526(24)	515(8)	513(7)	456(25)
KL114-18	0.05866(0.00116)	0.67055(0.01392)	0.08289(0.00112)	0.02346(0.00097)	555(23)	521(8)	513(7)	469(19)
KL114-19	0.05841(0.00136)	0.66919(0.01600)	0.08307(0.00115)	0.02179(0.00074)	545(29)	520(10)	514(7)	436(15)
KL114-20	0.05818(0.00115)	0.66474(0.01381)	0.08285(0.00112)	0.02181(0.00050)	537(23)	518(8)	513(7)	436(10)
KL114-21	0.05816(0.00114)	0.66216(0.01360)	0.08256(0.00111)	0.02215(0.00051)	536(23)	516(8)	511(7)	443(10)
KL114-22	0.05820(0.00121)	0.66259(0.01433)	0.08254(0.00112)	0.02206(0.00051)	537(25)	516(9)	511(7)	441(10)
KL114-23	0.05856(0.00120)	0.66437(0.01418)	0.08227(0.00111)	0.01613(0.00365)	551(24)	517(9)	510(7)	323(73)
KL114-24	0.05925(0.00129)	0.67347(0.01518)	0.08242(0.00113)	0.02495(0.00296)	576(26)	523(9)	511(7)	498(58)
KL114-25	0.05900(0.00122)	0.67387(0.01453)	0.08282(0.00112)	0.01085(0.00071)	567(25)	523(9)	513(7)	218(14)
KL73-01	0.05760(0.00103)	0.62969(0.01189)	0.07927(0.00106)	0.02731(0.00235)	515(20)	496(7)	492(6)	545(46)
KL73-02	0.05591(0.00119)	0.61166(0.01345)	0.07933(0.00109)	0.02051(0.00126)	449(26)	485(8)	492(7)	410(25)
KL73-03	0.05730(0.00103)	0.62776(0.01189)	0.07945(0.00107)	0.02020(0.00313)	503(20)	495(7)	493(6)	404(62)
KL73-04	0.08934(0.00155)	1.42822(0.02633)	0.11592(0.00156)	0.03425(0.00045)	1394(44)	895(11)	706(9)	681(9)
KL73-05	0.05792(0.0012)	0.63471(0.01361)	0.07947(0.00110)	0.03864(0.00497)	527(24)	499(8)	493(7)	766(97)
KL73-06	0.05668(0.00104)	0.67062(0.01299)	0.08579(0.00116)	0.02439(0.00333)	479(21)	521(8)	531(7)	487(66)
KL73-07	0.05611(0.00104)	0.61465(0.01201)	0.07944(0.00107)	0.01898(0.00236)	457(21)	486(8)	493(6)	380(47)
KL73-08	0.07407(0.00130)	1.32640(0.02472)	0.12985(0.00175)	0.03916(0.00052)	1025(46)	851(10)	786(10)	776(10)
KL73-09	0.06861(0.00120)	1.11228(0.02062)	0.11755(0.00158)	0.04093(0.00316)	887(18)	759(10)	716(9)	811(61)
KL73-10	0.06058(0.00113)	0.79201(0.01548)	0.09481(0.00129)	0.03587(0.00357)	624(21)	592(9)	584(8)	712(70)
KL73-11	0.07584(0.00136)	1.13114(0.02141)	0.10816(0.00146)	0.03257(0.00047)	926(53)	721(11)	657(8)	648(9)
KL73-12	0.07683(0.00136)	1.43398(0.02692)	0.13535(0.00183)	0.04065(0.00053)	1110(45)	901(11)	818(10)	805(10)
KL73-13	0.07003(0.00127)	0.87115(0.01669)	0.09020(0.00122)	0.02743(0.00051)	753(53)	594(9)	553(7)	547(10)
KL73-14	0.10193(0.00178)	3.01182(0.05582)	0.21426(0.00289)	0.06230(0.00082)	1504(63)	1340(22)	1239(16)	1221(16)

分析点号	同位素比值				年龄(Ma)
分析点号	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)	²⁰⁷Pb/ ²⁰⁶Pb(1σ)	²⁰⁷Pb/ ²³⁵U(1σ)	²⁰⁶Pb/ ²³⁸U(1σ)	²⁰⁸Pb/ ²³²Th(1σ)
KL114-01	0.05788(0.00113)	0.65159(0.01339)	0.08163(0.00110)	0.02345(0.00086)	525(23)	509(8)	506(7)	469(17)
KL114-02	0.05948(0.00149)	0.67259(0.01724)	0.08199(0.00115)	0.02211(0.00053)	585(32)	522(10)	508(7)	442(10)
KL114-03	0.05830(0.00113)	0.66128(0.01343)	0.08225(0.00110)	0.01520(0.00135)	541(23)	515(8)	510(7)	305(27)
KL114-04	0.05769(0.00107)	0.65744(0.01290)	0.08263(0.00110)	0.02236(0.00165)	518(22)	513(8)	512(7)	447(33)
KL114-05	0.05723(0.00143)	0.65045(0.01664)	0.08241(0.00113)	0.02196(0.00047)	500(33)	509(10)	510(7)	439(9)
KL114-06	0.05970(0.00115)	0.68066(0.01379)	0.08267(0.00111)	0.02149(0.00172)	593(22)	527(8)	512(7)	430(34)
KL114-07	0.05765(0.00109)	0.65621(0.01306)	0.08253(0.00110)	0.02218(0.00059)	516(22)	512(8)	511(7)	443(12)
KL114-08	0.06116(0.00121)	0.69521(0.01440)	0.08243(0.00111)	0.02543(0.00038)	586(54)	524(8)	510(6)	507(8)
KL114-09	0.05857(0.00117)	0.66701(0.01395)	0.08258(0.00112)	0.01991(0.00253)	551(24)	519(8)	512(7)	398(50)
KL114-10	0.06032(0.00117)	0.68306(0.01395)	0.08211(0.00110)	0.02476(0.00153)	615(23)	529(8)	509(7)	494(30)
KL114-11	0.05902(0.00118)	0.68105(0.01426)	0.08367(0.00113)	0.02286(0.00307)	568(24)	527(9)	518(7)	457(61)
KL114-12	0.05846(0.00117)	0.66808(0.01398)	0.08287(0.00112)	0.02063(0.00155)	547(24)	520(9)	513(7)	413(31)
KL114-13	0.05832(0.00128)	0.66586(0.01514)	0.08279(0.00113)	0.02242(0.00054)	542(27)	518(9)	513(7)	448(11)
KL114-14	0.05892(0.00113)	0.66959(0.01350)	0.08240(0.00110)	0.02154(0.00049)	564(22)	520(8)	510(7)	431(10)
KL114-15	0.05886(0.00114)	0.67333(0.01369)	0.08295(0.00111)	0.02205(0.00054)	562(23)	523(8)	514(7)	441(11)
KL114-16	0.06313(0.00122)	0.69716(0.01416)	0.08007(0.00107)	0.02211(0.00049)	713(22)	537(8)	497(6)	442(10)
KL114-17	0.05790(0.00116)	0.66068(0.01385)	0.08275(0.00112)	0.02281(0.00128)	526(24)	515(8)	513(7)	456(25)
KL114-18	0.05866(0.00116)	0.67055(0.01392)	0.08289(0.00112)	0.02346(0.00097)	555(23)	521(8)	513(7)	469(19)
KL114-19	0.05841(0.00136)	0.66919(0.01600)	0.08307(0.00115)	0.02179(0.00074)	545(29)	520(10)	514(7)	436(15)
KL114-20	0.05818(0.00115)	0.66474(0.01381)	0.08285(0.00112)	0.02181(0.00050)	537(23)	518(8)	513(7)	436(10)
KL114-21	0.05816(0.00114)	0.66216(0.01360)	0.08256(0.00111)	0.02215(0.00051)	536(23)	516(8)	511(7)	443(10)
KL114-22	0.05820(0.00121)	0.66259(0.01433)	0.08254(0.00112)	0.02206(0.00051)	537(25)	516(9)	511(7)	441(10)
KL114-23	0.05856(0.00120)	0.66437(0.01418)	0.08227(0.00111)	0.01613(0.00365)	551(24)	517(9)	510(7)	323(73)
KL114-24	0.05925(0.00129)	0.67347(0.01518)	0.08242(0.00113)	0.02495(0.00296)	576(26)	523(9)	511(7)	498(58)
KL114-25	0.05900(0.00122)	0.67387(0.01453)	0.08282(0.00112)	0.01085(0.00071)	567(25)	523(9)	513(7)	218(14)
KL73-01	0.05760(0.00103)	0.62969(0.01189)	0.07927(0.00106)	0.02731(0.00235)	515(20)	496(7)	492(6)	545(46)
KL73-02	0.05591(0.00119)	0.61166(0.01345)	0.07933(0.00109)	0.02051(0.00126)	449(26)	485(8)	492(7)	410(25)
KL73-03	0.05730(0.00103)	0.62776(0.01189)	0.07945(0.00107)	0.02020(0.00313)	503(20)	495(7)	493(6)	404(62)
KL73-04	0.08934(0.00155)	1.42822(0.02633)	0.11592(0.00156)	0.03425(0.00045)	1394(44)	895(11)	706(9)	681(9)
KL73-05	0.05792(0.0012)	0.63471(0.01361)	0.07947(0.00110)	0.03864(0.00497)	527(24)	499(8)	493(7)	766(97)
KL73-06	0.05668(0.00104)	0.67062(0.01299)	0.08579(0.00116)	0.02439(0.00333)	479(21)	521(8)	531(7)	487(66)
KL73-07	0.05611(0.00104)	0.61465(0.01201)	0.07944(0.00107)	0.01898(0.00236)	457(21)	486(8)	493(6)	380(47)
KL73-08	0.07407(0.00130)	1.32640(0.02472)	0.12985(0.00175)	0.03916(0.00052)	1025(46)	851(10)	786(10)	776(10)
KL73-09	0.06861(0.00120)	1.11228(0.02062)	0.11755(0.00158)	0.04093(0.00316)	887(18)	759(10)	716(9)	811(61)
KL73-10	0.06058(0.00113)	0.79201(0.01548)	0.09481(0.00129)	0.03587(0.00357)	624(21)	592(9)	584(8)	712(70)
KL73-11	0.07584(0.00136)	1.13114(0.02141)	0.10816(0.00146)	0.03257(0.00047)	926(53)	721(11)	657(8)	648(9)
KL73-12	0.07683(0.00136)	1.43398(0.02692)	0.13535(0.00183)	0.04065(0.00053)	1110(45)	901(11)	818(10)	805(10)
KL73-13	0.07003(0.00127)	0.87115(0.01669)	0.09020(0.00122)	0.02743(0.00051)	753(53)	594(9)	553(7)	547(10)
KL73-14	0.10193(0.00178)	3.01182(0.05582)	0.21426(0.00289)	0.06230(0.00082)	1504(63)	1340(22)	1239(16)	1221(16)