Petrogenesis and Tectonic Implications of the Zhongpai Fine-grained Granite in Qingshanbao, Gansu: Constraints from Geochemistry and Zircon U-Pb Chronology

doi:10.19657/j.geoscience.1000-8527.2023.100

Abstract

Abstract:

The Longshoushan uranium mineralization belt is located at the junction of North Qilian Orogenic Belt and Alxa Block.This mineralization belt is controlled by the tectonic activities of Qilian Orogenic Belt during Middle Silurian-Early Devonian and formed in a post-collision extensional environment.However, the ending of the Longshoushan uranium mineralization still lacks constraints from a precise geochronologic method.In this paper, we studied the whole-rock geochemistry, petrography, and zircon U-Pb chronology of the Zhongpai fine-grained granites in Qingshanbao, and discussed their rock types and genesis, and tectonic background.The results show that the diagenetic age of the Zhongpai fine-grained granites is (413.7±3.0) Ma, indicating it was formed from the Early Devonian magmatism in a post-collision extensional environment.The rocks are characterized by a high Si content, alkali, and low contents of CaO, MgO and P₂O₅, and with a A/CNK ratio of ~1.01-1.04.These rocks are enriched in light rare earth elements and Th, U, Nd, K, and depleted in heavy rare earth elements and Ba, Sr, P, Ti, and with a distinct negative Eu anomaly.These comprehensive geochemical data indicate that the Zhongpai fine-grained granites belong to the weakly peraluminous and highly differentiated I-type granite.The result also shows that the magma originated from the lower crust.The main residual mineral facies in the magma is amphibole, and the magma had undergone significant crystal fractionation and differentiation during its evolution.Combined with the previous studies, the magmatism occurred in Early Paleozoic in Longshoushan can be divided into two stages: the Late Ordovician-Early Silurian (~452-438 Ma) and Middle Silurian-Early Devonian (~430-412 Ma), which corresponds to the subduction stage and post-collision stage, respectively.

Key words: Zhongpai fine-grained granite, highly-differentiated I-type granite, tectonic environment, petrogenesis, zircon U-Pb dating, bulk geochemistry

CLC Number:

P588.121

CHEN Yaoxin, LIU Wenheng, WANG Kaixing, LIU Xiaodong, SUN Liqiang, YIN Donghua. Petrogenesis and Tectonic Implications of the Zhongpai Fine-grained Granite in Qingshanbao, Gansu: Constraints from Geochemistry and Zircon U-Pb Chronology[J]. Geoscience, 2024, 38(01): 169-182.

Figures/Tables 14

References 58

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样品	含量(10^-6)		²³²TH/ ²³⁸U	同位素比值						同位素年龄(Ma)
样品	²³²Th	²³⁸U	²³²TH/ ²³⁸U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ
QSB21-2-1	192	547	0.35	0.05638	0.0035	0.50206	0.0302	0.06462	0.00114	466.6	132.7	413.1	20.4	403.6	6.9
QSB21-2-2	469	1002	0.47	0.05283	0.00314	0.48336	0.02801	0.06637	0.00104	321.6	129.5	400.4	19.2	414.2	6.3
QSB21-2-3	76	227	0.33	0.05326	0.00537	0.48769	0.04774	0.06641	0.00177	340.0	213.5	403.3	32.6	414.5	10.7
QSB21-2-4	151	520	0.29	0.05545	0.00357	0.50919	0.03164	0.06659	0.00128	430.0	137.8	417.9	21.3	415.6	7.7
QSB21-2-8	171	919	0.19	0.05474	0.00164	0.51073	0.01372	0.06761	0.00097	401.5	64.9	418.9	9.2	421.8	5.9
QSB21-2-9	247	1169	0.21	0.05528	0.00197	0.50364	0.01647	0.06602	0.00101	423.4	77.2	414.2	11.1	412.1	6.1
QSB21-2-12	449	2407	0.19	0.06011	0.00182	0.54539	0.01477	0.06582	0.00089	607.5	64.1	442.0	9.7	411.0	5.4
QSB21-2-13	1232	3146	0.39	0.09385	0.00208	0.87823	0.01555	0.06791	0.00089	1505.0	41.3	640.0	8.4	423.6	5.4
QSB21-2-14	658	1418	0.46	0.05491	0.00193	0.50772	0.01634	0.06712	0.00095	408.6	76.3	416.9	11.0	418.8	5.8
QSB21-2-15	177	753	0.24	0.05748	0.00311	0.51905	0.02709	0.06558	0.00094	509.6	115.3	424.5	18.1	409.5	5.7
QSB21-2-16	111	271	0.41	0.05649	0.00339	0.50795	0.02926	0.06539	0.00107	471.0	128.2	417.1	19.7	408.3	6.5
QSB21-2-17	328	1254	0.26	0.05549	0.00157	0.50529	0.01223	0.06626	0.0009	431.6	61.4	415.3	8.3	413.6	5.5
QSB21-2-19	381	1134	0.34	0.05448	0.00176	0.48773	0.01381	0.06522	0.00093	390.7	70.0	403.4	9.4	407.3	5.7
QSB21-2-20	211	947	0.22	0.05783	0.00224	0.52039	0.01859	0.0656	0.00091	523.2	83.1	425.4	12.4	409.6	5.5
QSB21-2-21	277	1030	0.27	0.05713	0.00292	0.52523	0.02562	0.06707	0.00092	496.0	109.3	428.6	17.1	418.5	5.5

样品	含量(10^-6)		²³²TH/ ²³⁸U	同位素比值						同位素年龄(Ma)
样品	²³²Th	²³⁸U	²³²TH/ ²³⁸U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ
QSB21-2-1	192	547	0.35	0.05638	0.0035	0.50206	0.0302	0.06462	0.00114	466.6	132.7	413.1	20.4	403.6	6.9
QSB21-2-2	469	1002	0.47	0.05283	0.00314	0.48336	0.02801	0.06637	0.00104	321.6	129.5	400.4	19.2	414.2	6.3
QSB21-2-3	76	227	0.33	0.05326	0.00537	0.48769	0.04774	0.06641	0.00177	340.0	213.5	403.3	32.6	414.5	10.7
QSB21-2-4	151	520	0.29	0.05545	0.00357	0.50919	0.03164	0.06659	0.00128	430.0	137.8	417.9	21.3	415.6	7.7
QSB21-2-8	171	919	0.19	0.05474	0.00164	0.51073	0.01372	0.06761	0.00097	401.5	64.9	418.9	9.2	421.8	5.9
QSB21-2-9	247	1169	0.21	0.05528	0.00197	0.50364	0.01647	0.06602	0.00101	423.4	77.2	414.2	11.1	412.1	6.1
QSB21-2-12	449	2407	0.19	0.06011	0.00182	0.54539	0.01477	0.06582	0.00089	607.5	64.1	442.0	9.7	411.0	5.4
QSB21-2-13	1232	3146	0.39	0.09385	0.00208	0.87823	0.01555	0.06791	0.00089	1505.0	41.3	640.0	8.4	423.6	5.4
QSB21-2-14	658	1418	0.46	0.05491	0.00193	0.50772	0.01634	0.06712	0.00095	408.6	76.3	416.9	11.0	418.8	5.8
QSB21-2-15	177	753	0.24	0.05748	0.00311	0.51905	0.02709	0.06558	0.00094	509.6	115.3	424.5	18.1	409.5	5.7
QSB21-2-16	111	271	0.41	0.05649	0.00339	0.50795	0.02926	0.06539	0.00107	471.0	128.2	417.1	19.7	408.3	6.5
QSB21-2-17	328	1254	0.26	0.05549	0.00157	0.50529	0.01223	0.06626	0.0009	431.6	61.4	415.3	8.3	413.6	5.5
QSB21-2-19	381	1134	0.34	0.05448	0.00176	0.48773	0.01381	0.06522	0.00093	390.7	70.0	403.4	9.4	407.3	5.7
QSB21-2-20	211	947	0.22	0.05783	0.00224	0.52039	0.01859	0.0656	0.00091	523.2	83.1	425.4	12.4	409.6	5.5
QSB21-2-21	277	1030	0.27	0.05713	0.00292	0.52523	0.02562	0.06707	0.00092	496.0	109.3	428.6	17.1	418.5	5.5

样品号	SiO₂	TiO₂	Al₂O₃	TFe₂O₃	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	LOI	Total	A/ CNK	A/ NK	AKI	Mg^#	K₂O+ Na₂O	K₂O/ Na₂O
QSB21-2	76.48	0.11	12.15	0.75	0.03	0.15	0.37	3.36	5.41	0.01	0.77	98.82	1.01	1.07	0.94	34.89	8.77	1.61
QSB21-3	76.08	0.10	12.32	0.71	0.02	0.10	0.46	3.43	5.11	0.01	0.87	98.34	1.02	1.10	0.91	28.99	8.54	1.49
QSB21-4	76.26	0.14	12.41	0.86	0.03	0.19	0.55	3.43	4.94	0.02	0.93	98.83	1.03	1.13	0.89	39.45	8.37	1.44
QSB21-5	75.99	0.10	12.14	0.76	0.02	0.13	0.48	3.45	5.02	0.01	0.94	98.10	1.01	1.09	0.92	33.63	8.47	1.46
QSB21-6	76.74	0.11	12.20	0.80	0.03	0.15	0.61	3.53	4.74	0.01	0.97	98.92	1.01	1.11	0.90	33.09	8.27	1.34
QSB21-7	77.12	0.09	12.44	0.74	0.03	0.11	0.42	3.36	5.30	0.01	0.86	99.62	1.03	1.10	0.91	30.00	8.66	1.58
QSB21-8	75.84	0.18	12.56	1.36	0.03	0.28	0.60	3.35	5.09	0.02	0.89	99.31	1.04	1.14	0.88	36.93	8.44	1.52
QSB21-9	76.62	0.10	12.42	0.85	0.03	0.10	0.43	3.32	5.43	0.01	0.67	99.31	1.02	1.09	0.91	24.10	8.75	1.63
样品号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	(La/ Yb)_N	δEu	ΣREE	LREE/ HREE
QSB21-2	23.1	54.7	5.46	19.5	4.31	0.34	3.76	0.65	4.23	0.86	2.71	0.45	3.27	0.50	5.07	0.25	123.84	6.54
QSB21-3	25.5	56.9	6.30	22.6	4.98	0.38	4.23	0.70	4.48	0.90	2.73	0.44	3.01	0.45	6.08	0.25	133.60	6.89
QSB21-4	32.3	66.6	7.25	25.1	5.08	0.49	4.17	0.68	4.24	0.86	2.61	0.41	2.71	0.41	8.55	0.32	152.91	8.50
QSB21-5	23.8	51.5	5.68	20.7	4.64	0.37	4.01	0.66	4.27	0.87	2.66	0.44	2.94	0.45	5.81	0.26	122.99	6.55
QSB21-6	26.3	56.5	6.25	22.2	5.09	0.41	4.55	0.75	4.73	0.97	2.97	0.46	3.10	0.46	6.09	0.26	134.74	6.49
QSB21-7	24.7	55.3	6.16	22.1	5.26	0.30	4.58	0.78	5.20	1.07	3.44	0.58	4.18	0.67	4.24	0.18	134.32	5.55
QSB21-8	28.2	57.3	6.77	24.5	5.54	0.48	4.75	0.79	4.95	0.99	2.95	0.49	3.38	0.53	5.98	0.28	141.62	6.52
QSB21-9	25.7	59.0	6.78	24.9	6.58	0.26	6.41	1.11	7.63	1.55	4.81	0.78	5.24	0.79	3.52	0.12	151.54	4.35
样品号	Li	Be	Sc	V	Cr	Cs	Co	Ni	Cu	Ga	Sr	Rb	Ba	Th	U	Ta	Nb	P
QSB21-2	3.50	2.42	2.80	9.00	2.00	3.07	1.00	1.40	1.50	13.60	61.40	208.00	226.00	37.40	5.72	2.55	23.20	60.00
QSB21-3	4.30	2.94	2.60	6.00	1.00	3.10	0.60	0.40	0.80	15.85	47.30	218.00	169.50	42.10	5.43	1.74	17.40	50.00
QSB21-4	7.60	4.06	2.80	8.00	3.00	3.39	1.30	1.90	8.50	15.10	57.40	222.00	228.00	27.40	5.42	1.85	18.10	80.00
QSB21-5	4.90	2.98	2.70	6.00	1.00	3.67	0.70	0.70	1.40	15.90	47.40	215.00	151.50	36.50	4.94	1.81	17.10	50.00
QSB21-6	8.00	3.70	3.50	6.00	2.00	4.54	0.70	0.90	1.40	15.25	51.40	229.00	168.00	34.10	6.71	1.90	20.70	60.00
QSB21-7	8.00	4.84	3.60	5.00	2.00	5.09	0.70	0.60	2.20	16.90	36.70	219.00	135.50	48.40	9.63	3.36	26.70	40.00
QSB21-8	18.30	4.44	4.80	14.00	8.00	7.08	1.70	2.70	1.40	16.60	57.50	238.00	197.00	39.30	7.52	2.55	25.60	120.00
QSB21-9	8.30	3.62	3.30	5.00	1.00	2.48	0.80	0.80	8.30	16.90	33.80	220.00	103.50	53.70	11.80	2.71	30.20	50.00
样品号	Zr	Hf	Y	Ti	Zn	Mo	Bi	Sn	Pb	K	Nb/U	Rb/Sr	Ti/Zr	Nb/Ta	K/ Rb	T_Zr (℃)	Zr+Nb+ Ce+Y	10000 Ga/Al
QSB21-2	105.00	4.30	24.4	680	11.00	0.25	0.07	1.70	32.0	43800	4.06	3.40	6.48	9.10	210.58	792.00	207.30	2.11
QSB21-3	85.00	3.70	26.0	640	13.00	0.14	0.04	1.70	34.6	42800	3.20	4.60	7.53	10.00	196.33	774.00	185.30	2.43
QSB21-4	80.00	3.30	25.3	880	14.00	0.34	0.07	1.60	33.1	41300	3.34	3.90	11.00	9.78	186.04	769.00	190.00	2.30
QSB21-5	91.00	3.80	25.2	680	12.00	0.13	0.05	1.90	33.6	42400	3.46	4.50	7.47	9.45	197.21	779.00	184.80	2.47
QSB21-6	77.00	3.20	26.8	700	15.00	0.23	0.09	2.30	34.7	39000	3.08	4.50	9.09	10.89	170.31	764.00	181.00	2.36
QSB21-7	127.00	5.50	31.1	620	11.00	0.22	0.11	2.10	37.1	45100	2.77	6.00	4.88	7.95	205.94	811.00	240.10	2.57
QSB21-8	122.00	4.90	27.9	1160	23.00	0.76	0.14	4.40	35.8	41600	3.40	4.10	9.51	10.04	174.79	805.00	232.80	2.50
QSB21-9	147.00	6.00	43.0	660	11.00	0.25	0.05	1.50	35.0	45500	2.56	6.50	4.49	11.14	206.82	823.00	279.20	2.57

样品号	SiO₂	TiO₂	Al₂O₃	TFe₂O₃	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	LOI	Total	A/ CNK	A/ NK	AKI	Mg^#	K₂O+ Na₂O	K₂O/ Na₂O
QSB21-2	76.48	0.11	12.15	0.75	0.03	0.15	0.37	3.36	5.41	0.01	0.77	98.82	1.01	1.07	0.94	34.89	8.77	1.61
QSB21-3	76.08	0.10	12.32	0.71	0.02	0.10	0.46	3.43	5.11	0.01	0.87	98.34	1.02	1.10	0.91	28.99	8.54	1.49
QSB21-4	76.26	0.14	12.41	0.86	0.03	0.19	0.55	3.43	4.94	0.02	0.93	98.83	1.03	1.13	0.89	39.45	8.37	1.44
QSB21-5	75.99	0.10	12.14	0.76	0.02	0.13	0.48	3.45	5.02	0.01	0.94	98.10	1.01	1.09	0.92	33.63	8.47	1.46
QSB21-6	76.74	0.11	12.20	0.80	0.03	0.15	0.61	3.53	4.74	0.01	0.97	98.92	1.01	1.11	0.90	33.09	8.27	1.34
QSB21-7	77.12	0.09	12.44	0.74	0.03	0.11	0.42	3.36	5.30	0.01	0.86	99.62	1.03	1.10	0.91	30.00	8.66	1.58
QSB21-8	75.84	0.18	12.56	1.36	0.03	0.28	0.60	3.35	5.09	0.02	0.89	99.31	1.04	1.14	0.88	36.93	8.44	1.52
QSB21-9	76.62	0.10	12.42	0.85	0.03	0.10	0.43	3.32	5.43	0.01	0.67	99.31	1.02	1.09	0.91	24.10	8.75	1.63
样品号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	(La/ Yb)_N	δEu	ΣREE	LREE/ HREE
QSB21-2	23.1	54.7	5.46	19.5	4.31	0.34	3.76	0.65	4.23	0.86	2.71	0.45	3.27	0.50	5.07	0.25	123.84	6.54
QSB21-3	25.5	56.9	6.30	22.6	4.98	0.38	4.23	0.70	4.48	0.90	2.73	0.44	3.01	0.45	6.08	0.25	133.60	6.89
QSB21-4	32.3	66.6	7.25	25.1	5.08	0.49	4.17	0.68	4.24	0.86	2.61	0.41	2.71	0.41	8.55	0.32	152.91	8.50
QSB21-5	23.8	51.5	5.68	20.7	4.64	0.37	4.01	0.66	4.27	0.87	2.66	0.44	2.94	0.45	5.81	0.26	122.99	6.55
QSB21-6	26.3	56.5	6.25	22.2	5.09	0.41	4.55	0.75	4.73	0.97	2.97	0.46	3.10	0.46	6.09	0.26	134.74	6.49
QSB21-7	24.7	55.3	6.16	22.1	5.26	0.30	4.58	0.78	5.20	1.07	3.44	0.58	4.18	0.67	4.24	0.18	134.32	5.55
QSB21-8	28.2	57.3	6.77	24.5	5.54	0.48	4.75	0.79	4.95	0.99	2.95	0.49	3.38	0.53	5.98	0.28	141.62	6.52
QSB21-9	25.7	59.0	6.78	24.9	6.58	0.26	6.41	1.11	7.63	1.55	4.81	0.78	5.24	0.79	3.52	0.12	151.54	4.35
样品号	Li	Be	Sc	V	Cr	Cs	Co	Ni	Cu	Ga	Sr	Rb	Ba	Th	U	Ta	Nb	P
QSB21-2	3.50	2.42	2.80	9.00	2.00	3.07	1.00	1.40	1.50	13.60	61.40	208.00	226.00	37.40	5.72	2.55	23.20	60.00
QSB21-3	4.30	2.94	2.60	6.00	1.00	3.10	0.60	0.40	0.80	15.85	47.30	218.00	169.50	42.10	5.43	1.74	17.40	50.00
QSB21-4	7.60	4.06	2.80	8.00	3.00	3.39	1.30	1.90	8.50	15.10	57.40	222.00	228.00	27.40	5.42	1.85	18.10	80.00
QSB21-5	4.90	2.98	2.70	6.00	1.00	3.67	0.70	0.70	1.40	15.90	47.40	215.00	151.50	36.50	4.94	1.81	17.10	50.00
QSB21-6	8.00	3.70	3.50	6.00	2.00	4.54	0.70	0.90	1.40	15.25	51.40	229.00	168.00	34.10	6.71	1.90	20.70	60.00
QSB21-7	8.00	4.84	3.60	5.00	2.00	5.09	0.70	0.60	2.20	16.90	36.70	219.00	135.50	48.40	9.63	3.36	26.70	40.00
QSB21-8	18.30	4.44	4.80	14.00	8.00	7.08	1.70	2.70	1.40	16.60	57.50	238.00	197.00	39.30	7.52	2.55	25.60	120.00
QSB21-9	8.30	3.62	3.30	5.00	1.00	2.48	0.80	0.80	8.30	16.90	33.80	220.00	103.50	53.70	11.80	2.71	30.20	50.00
样品号	Zr	Hf	Y	Ti	Zn	Mo	Bi	Sn	Pb	K	Nb/U	Rb/Sr	Ti/Zr	Nb/Ta	K/ Rb	T_Zr (℃)	Zr+Nb+ Ce+Y	10000 Ga/Al
QSB21-2	105.00	4.30	24.4	680	11.00	0.25	0.07	1.70	32.0	43800	4.06	3.40	6.48	9.10	210.58	792.00	207.30	2.11
QSB21-3	85.00	3.70	26.0	640	13.00	0.14	0.04	1.70	34.6	42800	3.20	4.60	7.53	10.00	196.33	774.00	185.30	2.43
QSB21-4	80.00	3.30	25.3	880	14.00	0.34	0.07	1.60	33.1	41300	3.34	3.90	11.00	9.78	186.04	769.00	190.00	2.30
QSB21-5	91.00	3.80	25.2	680	12.00	0.13	0.05	1.90	33.6	42400	3.46	4.50	7.47	9.45	197.21	779.00	184.80	2.47
QSB21-6	77.00	3.20	26.8	700	15.00	0.23	0.09	2.30	34.7	39000	3.08	4.50	9.09	10.89	170.31	764.00	181.00	2.36
QSB21-7	127.00	5.50	31.1	620	11.00	0.22	0.11	2.10	37.1	45100	2.77	6.00	4.88	7.95	205.94	811.00	240.10	2.57
QSB21-8	122.00	4.90	27.9	1160	23.00	0.76	0.14	4.40	35.8	41600	3.40	4.10	9.51	10.04	174.79	805.00	232.80	2.50
QSB21-9	147.00	6.00	43.0	660	11.00	0.25	0.05	1.50	35.0	45500	2.56	6.50	4.49	11.14	206.82	823.00	279.20	2.57

位置	岩性	年龄(Ma)	参考文献
龙首山芨岭	肉红色中粗粒花岗岩	426.4±2.0	陈云杰等^[21]
龙首山牛角沟	石英二长花岗岩	447.0±5.2	陈云杰等^[3]
青山堡	灰绿色闪长玢岩	422.3±3.6	陈云杰等^[42]
龙首山西井	橄榄辉石和辉长岩	421±9.0	段俊等^[31]
青山堡	花岗闪长岩	451.5±3.2	何佳军等^[2]
龙首山红石泉	正长岩	416±0.17	冷天赐等^[7]
青山堡	中粗粒钾长花岗岩	441.6±4.2	刘文恒等^[4]
青山堡	细晶花岗岩	430.1±5.6	刘文恒等^[4]
龙首山青山堡	细粒闪长岩	438.6±4.7	牛宇奔^[5]
大佛寺	花岗岩	426.1±2.8	孙宝璐等^[41]
龙首山芨岭	花岗岩	428.6±8.1	汤琳^[19]
龙首山芨岭	黑云母二长花岗岩	425.2±3.0	汤琳^[20]
龙首山芨岭	二长花岗斑岩	416.6±9.2	汤琳^[20]
龙首山芨岭	斑状黑云母二长花岗岩	412.8±9	汤琳^[20]
龙首山大佛寺	碱性长石花岗岩	426±2.0	王增振等^[6]
河西堡孟家大湾	花岗岩	444±2.0	魏俏巧等^[46]
龙首山芨岭	A型似斑状花岗岩	458.3±2.3	张甲民等^[44]
龙首山莲花山	花岗闪长岩	441±4	张丽琪^[8]
龙首山孟家大湾	花岗闪长岩	441±3	张丽琪^[8]
龙首山芨岭	角闪辉长岩	441±2	张丽琪^[8]
龙首山西井	二长岩	438±4	张丽琪^[8]
杨前大山	花岗闪长岩	427±4	张丽琪^[8]
龙首山孟家大湾	石英闪长岩	424±2	张丽琪^[8]
龙首山圣容寺	钾长花岗岩	422±2	张丽琪^[8]
新开沟	似斑状花岗岩	419±4	张丽琪^[8]
新开沟	细粒花岗岩	414±3	张丽琪^[8]
龙首山芨岭	正长岩	427.2±3.6	张志强等^[19]
龙首山牛角沟	中粗粒花岗岩	445.2±7.8	赵如意等^[45]
龙首山芨岭	纳长岩	442.9±5.7	赵如意等^[47]