Late Triassic diabase in the southwestern Ordos Block: Chronology, geochemistry and structural significance

doi:10.13745/j.esf.sf.2022.8.10

Abstract

Abstract:

A few of diabasic dikes intrude into limestone of the Middle Ordovician Majiagou Formation, Leijiagou Village, southwestern Ordos Basin. The diabase is enriched in HFSE (Nb, Ta, Ti, Zr, Hf, etc.) and geochemically similar to intraplate tholeiite, while geochemical evidence indicates the primitive magma experienced relatively strong crystallization differentiation. Zircon U-Pb dating by LA-ICP-MS yielded ²⁰⁶Pb/²³⁸U ages of 750-195 Ma for the diabase. According to the peak age combined with regional geological data, the formation age of the diabase is determined to be 224 Ma (Late Triassic). The diabase suggests an extensional structural setting like continental rift existed in the southwestern Ordos Block in the Late Triassic, while strong post-collisional extension of its western part probably strengthened the extensional structural setting. And relatively weak lithospheric stability—implied by the Late Triassic diabase—perhaps provided material basis for the subsequent igneous activities of the Early Jurassic-Early Cretaceous in the southwestern Ordos Block. The igneous activities of the Late Triassic and beyond increased the regional geothermal gradient and thermal evolution of hydrocarbon source rocks, potentially affecting the reservoir-forming environment of the southwestern Ordos Block.

Key words: southwestern Ordos Block, Late Triassic, diabase, intraplate tholeiite, extension

CLC Number:

LUO Jinhai, CHANG Yinglei, CHEN Zhuo. Late Triassic diabase in the southwestern Ordos Block: Chronology, geochemistry and structural significance[J]. Earth Science Frontiers, 2022, 29(6): 314-324.

Figures/Tables 9

References 37

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样品号	w_B/%														Mg^#
样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃T	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	烧失量	总量			Mg^#
LP13	48.81	1.53	12.94	13.69	0.18	5.69	10.67	2.72	0.14	0.13	3.67	100.17		41.75
LP14	48.40	1.56	12.14	13.45	0.20	5.61	9.51	3.47	0.32	0.13	5.14	99.93		41.84
LP15	48.24	1.97	13.61	13.77	0.20	5.73	10.16	3.30	0.28	0.16	2.65	100.07		41.78
LP16	48.85	1.86	13.08	13.81	0.15	7.74	5.38	2.86	0.37	0.14	5.76	100.00		49.15
LP17	48.07	1.67	12.78	12.31	0.16	4.97	13.15	2.81	0.08	0.14	3.43	99.57		41.05
LP18	48.62	1.62	12.60	13.67	0.18	6.08	9.45	2.97	0.90	0.13	3.83	100.05		43.41
LP19	47.64	1.88	13.01	13.76	0.17	702.00	7.59	2.53	0.35	0.14	5.97	100.06		46.80
LP20	52.63	1.66	11.63	12.40	0.17	5.59	8.99	4.01	0.17	0.13	2.48	99.86		43.74
LP21	45.01	1.47	12.49	12.95	0.18	4.39	15.92	1.02	0.05	0.13	6.47	100.08		36.89
LP22	47.65	2.32	13.07	15.37	0.22	5.84	7.73	3.15	1.04	0.19	3.37	99.95		39.59
LP13	11.30	0.46	37.80	371.00	80.60	40.80	57.80	110.00	97.10	18.40	1.49	1.62		284.00
LP14	42.60	1.28	6.01	8.43	4.34	8.60	3.13	4.00	21.30	11.20	1.31	54.10		332.00
LP15	8.77	0.82	42.00	411.00	124.00	55.80	72.40	215.00	94.20	15.90	1.49	3.44		113.00
LP16	29.90	0.57	42.00	395.00	89.70	50.80	64.80	166.00	113.00	16.30	1.41	4.82		121.00
LP17	4.87	0.58	41.70	396.00	88.60	52.60	57.90	128.00	81.20	22.50	1.72	0.90		166.00
LP18	15.70	0.51	39.50	373.00	87.70	46.10	60.90	190.00	120.00	16.10	1.52	13.50		197.00
LP19	26.50	0.57	42.30	409.00	86.70	37.90	59.50	111.00	103.00	18.70	1.62	4.58		154.00
LP20	7.77	0.59	39.80	370.00	84.20	45.20	57.40	121.00	77.60	14.10	1.48	1.61		99.90
LP21	7.11	0.50	39.10	355.00	84.20	35.30	57.80	38.60	72.50	23.10	1.62	0.67		442.00
LP22	17.20	0.72	41.70	450.00	64.00	59.10	53.60	115.00	84.00	19.70	1.53	16.00		262.00
LP13	26.80	88.60	4.73	0.13	48.60	6.24	15.80	2.36	12.20	3.66	1.35	4.45	0.76
LP14	33.00	173.00	5.37	1.28	99.10	34.40	69.70	8.13	31.80	6.04	1.10	5.47	0.84
LP15	31.70	119.00	5.98	0.10	74.90	7.47	21.00	3.23	16.40	4.77	1.55	5.58	0.94
LP16	25.30	93.00	5.14	0.83	94.30	4.73	13.10	2.01	10.10	3.26	1.23	3.99	0.72
LP17	29.20	95.60	5.22	0.10	26.30	6.34	16.30	2.46	12.50	3.80	1.41	4.71	0.81
LP18	23.70	90.50	4.92	0.19	141.00	5.43	14.50	2.20	11.00	3.30	1.15	3.93	0.68
LP19	29.00	97.40	5.44	0.74	85.70	6.13	17.10	2.60	12.90	4.03	1.50	4.79	0.84
LP20	24.50	89.80	4.91	0.15	52.10	6.06	15.30	2.28	11.30	3.42	1.13	4.09	0.71
LP21	24.70	84.10	4.64	0.06	29.30	5.01	13.60	2.09	10.70	3.26	1.21	3.99	0.69
LP22	37.20	143.00	7.56	1.17	265.00	9.31	24.90	3.76	18.70	5.56	1.94	6.49	1.10
LP13	4.83	0.99	2.85	0.40	2.55	0.38	2.41	0.32	1.24	0.52	0.14	1.02	3.89
LP14	5.35	1.14	3.58	0.56	3.83	0.60	4.62	0.42	3.89	9.32	1.85	0.59	14.29
LP15	5.85	1.19	3.27	0.47	2.91	0.43	3.27	0.39	2.68	0.71	0.19	0.92	4.08
LP16	4.72	0.98	2.81	0.42	2.72	0.40	2.63	0.34	2.16	0.55	0.22	1.05	2.76
LP17	5.24	1.08	3.11	0.45	2.83	0.43	2.65	0.35	1.58	0.54	0.14	1.02	3.56
LP18	4.40	0.90	2.56	0.38	2.52	0.39	2.50	0.32	2.50	0.52	0.13	0.97	3.43
LP19	5.34	1.10	3.09	0.45	2.89	0.43	2.72	0.35	1.59	0.57	0.22	1.04	3.37
LP20	4.53	0.93	2.65	0.39	2.58	0.39	2.46	0.32	1.92	0.51	0.13	0.93	3.74
LP21	4.49	0.92	2.59	0.38	2.41	0.36	2.31	0.30	3.47	0.49	0.13	1.03	3.31
LP22	6.92	1.40	3.89	0.55	3.49	0.52	3.92	0.47	2.20	0.83	0.21	0.99	4.24

样品号	w_B/%														Mg^#
样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃T	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	烧失量	总量			Mg^#
LP13	48.81	1.53	12.94	13.69	0.18	5.69	10.67	2.72	0.14	0.13	3.67	100.17		41.75
LP14	48.40	1.56	12.14	13.45	0.20	5.61	9.51	3.47	0.32	0.13	5.14	99.93		41.84
LP15	48.24	1.97	13.61	13.77	0.20	5.73	10.16	3.30	0.28	0.16	2.65	100.07		41.78
LP16	48.85	1.86	13.08	13.81	0.15	7.74	5.38	2.86	0.37	0.14	5.76	100.00		49.15
LP17	48.07	1.67	12.78	12.31	0.16	4.97	13.15	2.81	0.08	0.14	3.43	99.57		41.05
LP18	48.62	1.62	12.60	13.67	0.18	6.08	9.45	2.97	0.90	0.13	3.83	100.05		43.41
LP19	47.64	1.88	13.01	13.76	0.17	702.00	7.59	2.53	0.35	0.14	5.97	100.06		46.80
LP20	52.63	1.66	11.63	12.40	0.17	5.59	8.99	4.01	0.17	0.13	2.48	99.86		43.74
LP21	45.01	1.47	12.49	12.95	0.18	4.39	15.92	1.02	0.05	0.13	6.47	100.08		36.89
LP22	47.65	2.32	13.07	15.37	0.22	5.84	7.73	3.15	1.04	0.19	3.37	99.95		39.59
LP13	11.30	0.46	37.80	371.00	80.60	40.80	57.80	110.00	97.10	18.40	1.49	1.62		284.00
LP14	42.60	1.28	6.01	8.43	4.34	8.60	3.13	4.00	21.30	11.20	1.31	54.10		332.00
LP15	8.77	0.82	42.00	411.00	124.00	55.80	72.40	215.00	94.20	15.90	1.49	3.44		113.00
LP16	29.90	0.57	42.00	395.00	89.70	50.80	64.80	166.00	113.00	16.30	1.41	4.82		121.00
LP17	4.87	0.58	41.70	396.00	88.60	52.60	57.90	128.00	81.20	22.50	1.72	0.90		166.00
LP18	15.70	0.51	39.50	373.00	87.70	46.10	60.90	190.00	120.00	16.10	1.52	13.50		197.00
LP19	26.50	0.57	42.30	409.00	86.70	37.90	59.50	111.00	103.00	18.70	1.62	4.58		154.00
LP20	7.77	0.59	39.80	370.00	84.20	45.20	57.40	121.00	77.60	14.10	1.48	1.61		99.90
LP21	7.11	0.50	39.10	355.00	84.20	35.30	57.80	38.60	72.50	23.10	1.62	0.67		442.00
LP22	17.20	0.72	41.70	450.00	64.00	59.10	53.60	115.00	84.00	19.70	1.53	16.00		262.00
LP13	26.80	88.60	4.73	0.13	48.60	6.24	15.80	2.36	12.20	3.66	1.35	4.45	0.76
LP14	33.00	173.00	5.37	1.28	99.10	34.40	69.70	8.13	31.80	6.04	1.10	5.47	0.84
LP15	31.70	119.00	5.98	0.10	74.90	7.47	21.00	3.23	16.40	4.77	1.55	5.58	0.94
LP16	25.30	93.00	5.14	0.83	94.30	4.73	13.10	2.01	10.10	3.26	1.23	3.99	0.72
LP17	29.20	95.60	5.22	0.10	26.30	6.34	16.30	2.46	12.50	3.80	1.41	4.71	0.81
LP18	23.70	90.50	4.92	0.19	141.00	5.43	14.50	2.20	11.00	3.30	1.15	3.93	0.68
LP19	29.00	97.40	5.44	0.74	85.70	6.13	17.10	2.60	12.90	4.03	1.50	4.79	0.84
LP20	24.50	89.80	4.91	0.15	52.10	6.06	15.30	2.28	11.30	3.42	1.13	4.09	0.71
LP21	24.70	84.10	4.64	0.06	29.30	5.01	13.60	2.09	10.70	3.26	1.21	3.99	0.69
LP22	37.20	143.00	7.56	1.17	265.00	9.31	24.90	3.76	18.70	5.56	1.94	6.49	1.10
LP13	4.83	0.99	2.85	0.40	2.55	0.38	2.41	0.32	1.24	0.52	0.14	1.02	3.89
LP14	5.35	1.14	3.58	0.56	3.83	0.60	4.62	0.42	3.89	9.32	1.85	0.59	14.29
LP15	5.85	1.19	3.27	0.47	2.91	0.43	3.27	0.39	2.68	0.71	0.19	0.92	4.08
LP16	4.72	0.98	2.81	0.42	2.72	0.40	2.63	0.34	2.16	0.55	0.22	1.05	2.76
LP17	5.24	1.08	3.11	0.45	2.83	0.43	2.65	0.35	1.58	0.54	0.14	1.02	3.56
LP18	4.40	0.90	2.56	0.38	2.52	0.39	2.50	0.32	2.50	0.52	0.13	0.97	3.43
LP19	5.34	1.10	3.09	0.45	2.89	0.43	2.72	0.35	1.59	0.57	0.22	1.04	3.37
LP20	4.53	0.93	2.65	0.39	2.58	0.39	2.46	0.32	1.92	0.51	0.13	0.93	3.74
LP21	4.49	0.92	2.59	0.38	2.41	0.36	2.31	0.30	3.47	0.49	0.13	1.03	3.31
LP22	6.92	1.40	3.89	0.55	3.49	0.52	3.92	0.47	2.20	0.83	0.21	0.99	4.24

测点	w_B/10^-6			Th/U	同位素比值及误差						锆石年龄及误差/Ma
	w_B/10^-6				²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U
	Pb^*	²³²Th	²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U
	Pb^*	²³²Th	²³⁸U	比值	1σ	比值		1σ	比值	1σ	年龄	1σ	年龄	1σ	年龄	1σ
1	25.28	176.88	239.64	0.74	0.062 14	0.001 92	0.685 39	0.017 4	0.079 99	0.001 01	679	33	530	10	496	6
3	8.64	62.75	186.89	0.34	0.059 64	0.004 06	0.308 61	0.019 85	0.037 53	0.000 73	591	106	273	15	238	5
5	34.56	347.88	364.12	0.96	0.063 31	0.002 53	0.605 72	0.021 48	0.069 39	0.000 99	719	51	481	14	432	6
6	28.34	196.92	275.46	0.71	0.061 28	0.001 79	0.682 03	0.016 04	0.080 72	0.001 00	649	30	528	10	500	6
9	12.17	81.14	160.49	0.51	0.065 05	0.003 57	0.530 35	0.027 88	0.059 13	0.000 92	776	118	432	18	370	6
12	37.42	263.87	394.75	0.67	0.057 32	0.001 49	0.592 21	0.011 6	0.074 95	0.000 88	504	23	472	7	466	5
13	80.52	54.63	608.33	0.09	0.066 37	0.001 53	1.128 3	0.022 4	0.123 3	0.001 44	818	49	767	11	750	8
14	30.31	457.13	784.26	0.58	0.057 6	0.001 96	0.244 22	0.007 11	0.030 76	0.000 4	515	41	222	6	195	3
15	62.67	784.83	641.12	1.22	0.062 92	0.001 8	0.577 41	0.013 22	0.066 58	0.000 82	706	28	463	9	416	5
16	46.28	294.04	520.91	0.56	0.057 92	0.001 62	0.570 58	0.012 66	0.071 48	0.000 86	527	28	458	8	445	5
17	37.09	142.82	398.62	0.36	0.057 95	0.002 68	0.564 96	0.025 05	0.070 7	0.000 95	528	104	455	16	440	6
19	12.28	161.49	287.41	0.56	0.050 6	0.001 72	0.246 66	0.007 17	0.035 37	0.000 45	223	44	224	6	224	3
20	34.94	238.56	373.11	0.64	0.061 02	0.001 86	0.619 79	0.015 56	0.073 7	0.000 92	640	33	490	10	458	6
21	23.78	156.5	308.99	0.51	0.060 99	0.003 53	0.506 16	0.028 28	0.060 19	0.000 92	639	128	416	19	377	6
22	64.67	655.34	638.86	1.03	0.059 95	0.001 51	0.596 61	0.011 26	0.072 21	0.000 85	602	22	475	7	449	5
23	33.53	252.1	360.68	0.70	0.056 99	0.002 72	0.541 26	0.024 83	0.068 88	0.000 92	491	108	439	16	429	6
24	49.30	449.41	553.48	0.81	0.057 62	0.001 74	0.548 82	0.013 63	0.069 12	0.000 86	515	33	444	9	431	5
25	47.99	324.12	525.71	0.62	0.058 10	0.001 55	0.587 07	0.012 22	0.073 33	0.000 87	534	25	469	8	456	5
26	47.70	434.73	522.49	0.83	0.056 91	0.001 33	0.538 44	0.008 91	0.068 66	0.000 78	488	18	437	6	428	5
27	19.37	132.4	204.18	0.65	0.057 57	0.002 16	0.593 44	0.019 63	0.074 8	0.001 02	513	49	473	13	465	6
28	33.37	313.56	597.81	0.52	0.052 49	0.002 85	0.316 06	0.016 6	0.043 67	0.000 61	307	127	279	13	276	4
31	20.78	126.97	236.88	0.54	0.057 08	0.001 83	0.560 53	0.015 18	0.071 26	0.000 9	495	38	452	10	444	5
32	29.97	277.85	325.19	0.85	0.056 16	0.002 41	0.521 25	0.021 37	0.067 32	0.000 85	459	98	426	14	420	5
33	19.53	113.22	165.22	0.69	0.059 32	0.002 35	0.592 71	0.020 94	0.072 51	0.001 02	579	52	473	13	451	6
34	32.40	305.27	341.12	0.89	0.058 69	0.002 1	0.555 55	0.017 43	0.068 69	0.000 92	556	45	449	11	428	6
35	20.15	131.05	221.47	0.59	0.055 00	0.001 64	0.549 79	0.013 61	0.072 54	0.000 89	412	34	445	9	451	5
38	41.69	262.53	401.92	0.65	0.058 32	0.002 41	0.644 01	0.025 27	0.080 09	0.001 03	542	92	505	16	497	6
39	11.86	88.49	91.10	0.97	0.067 94	0.003 94	0.944 46	0.051 4	0.100 88	0.001 93	867	81	675	27	620	11
41	36.09	330.91	371.32	0.89	0.054 57	0.001 55	0.544 56	0.012 65	0.072 41	0.000 88	395	31	441	8	451	5
42	51.01	485.27	462.97	1.05	0.053 53	0.001 25	0.582 18	0.009 82	0.078 91	0.000 90	351	19	466	6	490	5
43	88.02	341.41	407.01	0.84	0.054 12	0.001 74	0.525 11	0.014 46	0.070 4	0.000 89	376	39	429	10	439	5
44	57.12	590.25	589.36	1.00	0.052 17	0.001 49	0.496 33	0.011 63	0.069 02	0.000 83	293	32	409	8	430	5
46	70.15	849.88	699.87	1.21	0.054 09	0.001 28	0.520 57	0.009 01	0.069 83	0.000 8	375	20	426	6	435	5
47	96.18	435.88	1 130.09	0.39	0.052 7	0.001 13	0.519 69	0.007 51	0.071 54	0.000 8	316	15	425	5	445	5
48	25.50	121.51	261.27	0.47	0.066 33	0.001 85	0.720 99	0.016 2	0.078 86	0.000 97	817	27	551	10	489	6

测点	w_B/10^-6			Th/U	同位素比值及误差						锆石年龄及误差/Ma
	w_B/10^-6				²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U
	Pb^*	²³²Th	²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U		²⁰⁷Pb/²⁰⁶Pb		²⁰⁷Pb/²³⁵U		²⁰⁶Pb/²³⁸U
	Pb^*	²³²Th	²³⁸U	比值	1σ	比值		1σ	比值	1σ	年龄	1σ	年龄	1σ	年龄	1σ
1	25.28	176.88	239.64	0.74	0.062 14	0.001 92	0.685 39	0.017 4	0.079 99	0.001 01	679	33	530	10	496	6
3	8.64	62.75	186.89	0.34	0.059 64	0.004 06	0.308 61	0.019 85	0.037 53	0.000 73	591	106	273	15	238	5
5	34.56	347.88	364.12	0.96	0.063 31	0.002 53	0.605 72	0.021 48	0.069 39	0.000 99	719	51	481	14	432	6
6	28.34	196.92	275.46	0.71	0.061 28	0.001 79	0.682 03	0.016 04	0.080 72	0.001 00	649	30	528	10	500	6
9	12.17	81.14	160.49	0.51	0.065 05	0.003 57	0.530 35	0.027 88	0.059 13	0.000 92	776	118	432	18	370	6
12	37.42	263.87	394.75	0.67	0.057 32	0.001 49	0.592 21	0.011 6	0.074 95	0.000 88	504	23	472	7	466	5
13	80.52	54.63	608.33	0.09	0.066 37	0.001 53	1.128 3	0.022 4	0.123 3	0.001 44	818	49	767	11	750	8
14	30.31	457.13	784.26	0.58	0.057 6	0.001 96	0.244 22	0.007 11	0.030 76	0.000 4	515	41	222	6	195	3
15	62.67	784.83	641.12	1.22	0.062 92	0.001 8	0.577 41	0.013 22	0.066 58	0.000 82	706	28	463	9	416	5
16	46.28	294.04	520.91	0.56	0.057 92	0.001 62	0.570 58	0.012 66	0.071 48	0.000 86	527	28	458	8	445	5
17	37.09	142.82	398.62	0.36	0.057 95	0.002 68	0.564 96	0.025 05	0.070 7	0.000 95	528	104	455	16	440	6
19	12.28	161.49	287.41	0.56	0.050 6	0.001 72	0.246 66	0.007 17	0.035 37	0.000 45	223	44	224	6	224	3
20	34.94	238.56	373.11	0.64	0.061 02	0.001 86	0.619 79	0.015 56	0.073 7	0.000 92	640	33	490	10	458	6
21	23.78	156.5	308.99	0.51	0.060 99	0.003 53	0.506 16	0.028 28	0.060 19	0.000 92	639	128	416	19	377	6
22	64.67	655.34	638.86	1.03	0.059 95	0.001 51	0.596 61	0.011 26	0.072 21	0.000 85	602	22	475	7	449	5
23	33.53	252.1	360.68	0.70	0.056 99	0.002 72	0.541 26	0.024 83	0.068 88	0.000 92	491	108	439	16	429	6
24	49.30	449.41	553.48	0.81	0.057 62	0.001 74	0.548 82	0.013 63	0.069 12	0.000 86	515	33	444	9	431	5
25	47.99	324.12	525.71	0.62	0.058 10	0.001 55	0.587 07	0.012 22	0.073 33	0.000 87	534	25	469	8	456	5
26	47.70	434.73	522.49	0.83	0.056 91	0.001 33	0.538 44	0.008 91	0.068 66	0.000 78	488	18	437	6	428	5
27	19.37	132.4	204.18	0.65	0.057 57	0.002 16	0.593 44	0.019 63	0.074 8	0.001 02	513	49	473	13	465	6
28	33.37	313.56	597.81	0.52	0.052 49	0.002 85	0.316 06	0.016 6	0.043 67	0.000 61	307	127	279	13	276	4
31	20.78	126.97	236.88	0.54	0.057 08	0.001 83	0.560 53	0.015 18	0.071 26	0.000 9	495	38	452	10	444	5
32	29.97	277.85	325.19	0.85	0.056 16	0.002 41	0.521 25	0.021 37	0.067 32	0.000 85	459	98	426	14	420	5
33	19.53	113.22	165.22	0.69	0.059 32	0.002 35	0.592 71	0.020 94	0.072 51	0.001 02	579	52	473	13	451	6
34	32.40	305.27	341.12	0.89	0.058 69	0.002 1	0.555 55	0.017 43	0.068 69	0.000 92	556	45	449	11	428	6
35	20.15	131.05	221.47	0.59	0.055 00	0.001 64	0.549 79	0.013 61	0.072 54	0.000 89	412	34	445	9	451	5
38	41.69	262.53	401.92	0.65	0.058 32	0.002 41	0.644 01	0.025 27	0.080 09	0.001 03	542	92	505	16	497	6
39	11.86	88.49	91.10	0.97	0.067 94	0.003 94	0.944 46	0.051 4	0.100 88	0.001 93	867	81	675	27	620	11
41	36.09	330.91	371.32	0.89	0.054 57	0.001 55	0.544 56	0.012 65	0.072 41	0.000 88	395	31	441	8	451	5
42	51.01	485.27	462.97	1.05	0.053 53	0.001 25	0.582 18	0.009 82	0.078 91	0.000 90	351	19	466	6	490	5
43	88.02	341.41	407.01	0.84	0.054 12	0.001 74	0.525 11	0.014 46	0.070 4	0.000 89	376	39	429	10	439	5
44	57.12	590.25	589.36	1.00	0.052 17	0.001 49	0.496 33	0.011 63	0.069 02	0.000 83	293	32	409	8	430	5
46	70.15	849.88	699.87	1.21	0.054 09	0.001 28	0.520 57	0.009 01	0.069 83	0.000 8	375	20	426	6	435	5
47	96.18	435.88	1 130.09	0.39	0.052 7	0.001 13	0.519 69	0.007 51	0.071 54	0.000 8	316	15	425	5	445	5
48	25.50	121.51	261.27	0.47	0.066 33	0.001 85	0.720 99	0.016 2	0.078 86	0.000 97	817	27	551	10	489	6