The Val Biandino Intrusive Suite (central Southern Alps, N Italy): new geochronological and geochemical data on the Early Permian magmatic activity in the Southalpine Domain

Zanchetta, Stefano; Crippa, Chiara; Zanchi, Andrea; Montemagni, Chiara

doi:10.1186/s00015-024-00457-4

Swiss Journal of Geosciences

Table 3 SHRIMP U-Th-Pb isotopic data of zircons from the leucogranites of the Val Biandino Intrusive Suite

From: The Val Biandino Intrusive Suite (central Southern Alps, N Italy): new geochronological and geochemical data on the Early Permian magmatic activity in the Southalpine Domain

	ppm					Isotope ratios						Ages (Ma)
	U	Th	²⁰⁶Pb	± err (%)	Th/U	²⁰⁷Pb/²⁰⁶Pb	± err	²⁰⁶Pb/²³⁸U	± err	²⁰⁷Pb/²³⁵U	± err	²⁰⁷Pb/²⁰⁶Pb	± err	²⁰⁶Pb/²³⁸U	± err	²⁰⁷Pb/²³⁵U	± err	% discord
VBQD
VBZ3-1.1	627.6	1064.1	23.4	0.2	1.74	0.0518	0.0012	0.0430	0.0008	0.3069	0.0091	276.3	53.2	271.3	4.7	271.8	7.1	-0.2
VBZ3-10.1	208.6	88.0	8.5	1.6	0.43	0.0491	0.0058	0.0462	0.0008	0.3131	0.0375	154.9	255.6	291.1	5.2	276.6	29.4	5.0
VBZ3-11.1	345.7	119.5	13.6	0.0	0.35	0.0514	0.0025	0.0455	0.0007	0.3223	0.0168	259.5	110.0	286.6	4.5	283.7	13.0	1.0
VBZ3-12.1	349.2	317.7	13.3	0.3	0.93	0.0492	0.0014	0.0439	0.0009	0.2980	0.0103	158.9	64.8	277.0	5.4	264.8	8.1	4.4
VBZ3-13.1	596.6	304.7	22.4	0.1	0.52	0.0517	0.0017	0.0433	0.0009	0.3088	0.0121	270.9	73.0	273.5	5.8	273.2	9.4	0.1
VBZ3-14.1	753.3	555.1	29.1	0.2	0.76	0.0517	0.0017	0.0446	0.0005	0.3177	0.0111	272.9	73.0	281.0	3.3	280.1	8.6	0.3
VBZ3-15.1	992.0	842.0	39.2	0.5	0.87	0.0474	0.0011	0.0455	0.0010	0.2974	0.0095	107.2	43.1	286.7	3.1	264.3	6.7	7.8
VBZ3-16.1	400.1	880.4	15.7	0.7	2.26	0.0472	0.0013	0.0450	0.0007	0.2928	0.0096	130.6	32.2	283.5	2.8	260.7	7.5	8.0
VBZ3-17.1	148.3	98.9	5.5	0.4	0.68	0.0496	0.0023	0.0426	0.0008	0.2914	0.0145	175.3	103.0	269.1	5.2	259.6	11.5	3.5
VBZ3-17.2	244.3	190.0	9.4	0.6	0.80	0.0471	0.0015	0.0441	0.0006	0.2911	0.0093	150.0	52.5	278.1	6.8	259.4	14.4	6.7
VBZ3-2.1	994.9	353.2	39.1	0.2	0.36	0.0502	0.0009	0.0452	0.0009	0.3133	0.0089	205.5	43.0	285.3	5.8	276.8	6.9	3.0
VBZ3-3.1	1886.3	992.2	72.1	0.2	0.54	0.0516	0.0004	0.0441	0.0013	0.3137	0.0100	268.3	19.8	278.1	8.3	277.1	7.7	0.4
VBZ3-4.1	255.4	478.4	10.2	0.7	1.92	0.0490	0.0024	0.0458	0.0004	0.3092	0.0156	146.3	112.2	288.6	2.6	273.5	12.2	5.2
VBZ3-6.1	610.1	266.8	24.1	0.4	0.45	0.0509	0.0009	0.0455	0.0016	0.3195	0.0122	237.3	38.4	286.8	9.6	281.5	9.5	1.9
VBZ3-8.1	573.2	793.0	22.5	0.5	1.42	0.0488	0.0014	0.0452	0.0010	0.3041	0.0111	137.5	64.6	285.0	6.5	269.6	8.7	5.4
Inherited cores
VBZ3-9.1	1115.0	655.8	46.5	0.3	0.60	0.0495	0.0004	0.0481	0.0009	0.3281	0.0069	172.1	20.4	302.6	5.5	288.1	5.3	4.8
VBZ3-11.2	1102.1	645.3	44.3	0.25	0.59	0.0521	0.0001	0.0482	0.0009	0.3463	0.0065	289.1	6.0	303.6	5.5	301.9	4.9	0.5
VBZ3-21.1	573.8	202.8	43.5	0.1	0.35	0.0593	0.0005	0.0876	0.0010	0.7165	0.0103	579.9	16.8	541.1	6.0	548.6	6.1	-1.4
VBZ3-21.2	1208.7	106.4	88.4	0.2	0.09	0.0589	0.0006	0.0844	0.0015	0.0589	0.0006	4699.8	57.2	522.5	17.0	530.1	16.4	-1.4
VBZ3-22.1	1167.1	819.4	58.7	0.2	0.70	0.0514	0.0004	0.0580	0.0008	0.0514	0.0004	3949.5	48.6	363.5	9.9	349.7	9.6	3.8
VBZ3-23.1	569.3	201.2	44.1	0.1	0.28	0.0589	0.0006	0.0845	0.0015	0.0589	0.0006	4704.5	56.7	522.7	16.9	531.4	16.3	-1.7
VSBG
VBZ43-1.1	259.8	97.7	10.0	0.6	0.39	0.0486	0.0019	0.0440	0.0009	0.2953	0.0129	130.1	88.6	277.8	5.3	262.7	10.1	5.4
VBZ43-3.1	300.2	293.2	11.8	0.5	1.00	0.0490	0.0023	0.0453	0.0011	0.3060	0.0164	147.5	108.2	285.6	6.7	271.1	12.8	5.1
VBZ43-5.1	1031.7	400.0	39.6	0.2	0.40	0.0517	0.0007	0.0443	0.0007	0.3158	0.0066	273.7	28.8	279.2	4.4	278.6	5.1	0.2
VBZ43-6.1	930.5	340.5	35.9	0.2	0.38	0.0508	0.0006	0.0445	0.0007	0.3116	0.0064	231.9	28.4	280.6	4.4	275.5	5.0	1.8
VBZ43-1.1	306.8	255.0	12.0	0.1	0.85	0.0527	0.0008	0.0451	0.0007	0.3281	0.0072	317.9	33.2	284.5	4.4	288.1	5.5	1.3
VBZ43-11.1	490.5	143.1	19.0	0.3	0.30	0.0494	0.0011	0.0446	0.0007	0.3038	0.0086	165.5	53.6	281.5	4.3	269.4	6.7	4.3
VBZ43-12.1	197.5	146.1	7.4	0.2	0.76	0.0510	0.0024	0.0433	0.0009	0.3040	0.0157	238.7	104.8	273.1	5.6	269.5	12.3	1.3
VBZ43-13.1	2028.2	392.2	80.6	0.1	0.20	0.0513	0.0006	0.0459	0.0006	0.3245	0.0057	254.1	24.8	289.2	3.7	285.4	4.4	1.3
VBZ43-14.1	431.1	247.8	16.6	0.1	0.59	0.0507	0.0008	0.0445	0.0011	0.3114	0.0092	228.5	37.4	280.8	6.7	275.3	7.2	2.0
VBZ43-15.1	443.4	392.2	16.9	0.4	0.91	0.0502	0.0010	0.0440	0.0008	0.3041	0.0083	202.1	47.6	277.4	4.7	269.6	6.5	2.8
VBZ43-16.1	1298	532	50.3	0.1	0.42	0.0504	0.0008	0.0448	0.0007	0.3112	0.0068	214.3	36.4	282.4	4.1	275.1	5.3	2.6
VBZ43-16.2	1409	386	54.8	0.06	0.28	0.0524	0.0006	0.0449	0.0009	0.3248	0.0073	304.5	26.6	283.3	5.3	285.6	5.6	-0.8
VBZ43-17.1	1023	459	38.9	0.22	0.46	0.0501	0.0007	0.0439	0.0006	0.3032	0.0059	200.5	30.8	276.8	3.7	268.9	4.6	2.9
VBZ43-19.1	392	157	15.6	0.16	0.41	0.0505	0.0015	0.0459	0.0007	0.3194	0.0104	216.3	65.6	289.3	4.1	281.4	8.0	2.7
VBZ43-2.1	445	233	17.6	0.51	0.54	0.0492	0.0016	0.0456	0.0007	0.2971	0.0112	156.3	67.2	287.2	4.4	264.1	8.8	8.0
VBZ43-3.1	431	216	16.3	0.22	0.52	0.0493	0.0009	0.0437	0.0017	0.2966	0.0131	159.7	43.4	275.6	10.8	263.8	10.3	4.3
VBZ43-4.1	602	292	24.1	0.29	0.50	0.0482	0.0006	0.0461	0.0006	0.3062	0.0060	110.3	31.0	290.2	4.0	271.2	4.7	6.5
VBZ43-5.1	502	249	20.0	0.35	0.51	0.0487	0.0015	0.0458	0.0012	0.3073	0.0122	131.5	69.0	288.7	7.3	272.1	9.5	5.8
VBZ43-8.1	1303	550	49.0	0.22	0.43	0.0497	0.0007	0.0434	0.0008	0.2975	0.0073	182.3	33.2	273.8	5.2	264.5	5.7	3.4
VBZ43-9.1	267	255	10.1	0.58	0.98	0.0493	0.0026	0.0435	0.0007	0.2956	0.0161	160.3	117.6	274.6	4.2	262.9	12.7	4.2
VBZ43-9.2	467	219	17.9	0.0	0.48	0.0519	0.0011	0.0443	0.0008	0.3173	0.0088	281.5	47.8	279.6	4.8	279.9	6.8	-0.1

	U (ppm)	Th (ppm)	% from ²⁰⁴Pb	± err (%)	Th/U	²⁰⁷Pb/²⁰⁶Pb	± err	²⁰⁶Pb/²³⁸U	± err	²⁰⁷Pb/²⁰⁶Pb	± err	²⁰⁶Pb/²³⁸U	± err
TEMORA
TEM-1.1	262.5	70.4	0.84	0.02	0.28	2.1355	0.0563	0.6945	0.1067	165.5	36.8	418.1	3.0
TEM-2.1	235.9	67.0	0.51	0.10	0.29	2.0391	0.0553	1.4843	0.1070	245.5	29.9	417.4	3.4
TEM-5.1	160.8	36.4	0.62	0.11	0.23	2.4099	0.0573	2.3930	0.1205	299.2	34.9	426.2	9.1
TEM-8.1	398.7	184.8	0.24	0.03	0.48	1.6014	0.0550	0.5901	0.1075	331.7	14.1	416.8	2.7
TEM-9.1	592.5	171.6	0.13	0.05	0.30	1.3059	0.0553	1.7092	0.1102	378.3	8.1	418.4	4.3
TEM-10.1	250.5	117.6	0.46	0.06	0.49	2.0190	0.0561	0.7221	0.1119	302.9	25.6	412.6	3.1
TEM-11.1	227.8	101.5	0.70	0.03	0.46	2.0372	0.0560	2.8517	0.1174	209.9	35.4	418.1	7.7
TEM-12.1	156.7	71.9	0.58	0.10	0.47	2.4020	0.0581	0.8733	0.1083	345.7	33.6	412.2	3.7
TEM-15.1	679.0	333.2	0.28	0.04	0.51	1.2357	0.0553	2.5138	0.1112	328.9	12.7	421.5	2.1
TEM-16.1	314.3	110.2	0.35	0.04	0.36	1.7797	0.0560	1.4767	0.1091	334.4	19.1	417.4	2.8
TEM-18.1	342.4	165.1	0.27	0.05	0.50	1.7338	0.0560	1.5885	0.1141	362.7	15.1	412.1	3.0
TEM-20.1	157.4	46.2	0.47	0.11	0.30	2.5788	0.0550	2.2773	0.1102	251.0	34.9	412.2	4.3
TEM-23.1	465.4	106.1	0.23	0.21	0.24	1.4551	0.0546	1.5601	0.1095	317.3	12.5	415.1	4.8
TEM-24.1	626.5	238.0	0.19	0.52	0.39	1.2358	0.0546	2.3623	0.1072	329.0	10.2	417.2	1.9

Errors are at one sigma level. U, Th and ²⁰⁶Pb contents are expressed in ppm. The error in 206/238 averaging the standard has been already propagated. Th/U ratios are atomic (232/238), not in weight
Point-to point errors, calculated on replicates of the TEMORA standard, are: 0.39% for ²⁰⁶Pb/²³⁸U, and 0.31% for ²⁰⁷Pb/²⁰⁶Pb

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