Review of Geochemical Characteristics of Jingshan-Tushan Granites in Bengbu Uplift, Southeast Margin of North China Craton

doi:10.19657/j.geoscience.1000-8527.2018.06.12

Abstract

Abstract:

In this study, we carried out field observation, geochronological and geochemical analyses on the Jingshan-Tushan granites in the Bengbu uplift, southern margin of the North China craton. Zircon U-Pb dating of the weakly-gneissic monzogranite yielded (160.4±1.3) Ma to (162.8±1.8) Ma, suggesting Late Jurassic magmatism. Lithogeochemical data show that the Jingshan-Tushan granites are overall Si- and alkali-rich, high-K calc-alkaline, metaluminous-peraluminous, relatively LREE-enriched, with strong positive Eu anomalies and subtle Ce anomalies. The granites are also depleted in K, P and Ti, and relatively enriched in Rb, Ba, U, La, Sr, Zr and Sm. Data points of the granites fall into the I-type field in the petrogenetic discrimination diagram, and zircon Lu-Hf and whole-rock Sm-Nd compositions suggest that the magma source may have been mainly derived from the Neoarchean continental crust. In tectonic discrimination diagrams, the data points fall mainly in the volcanic arc granite field. It is suggested that the granites were formed in a post-collision extensional setting, consistent with the geodynamic background of the Late Jurassic North China craton.

Key words: North China Craton, Bengbu uplift, Jingshan-Tushan granite, lithogeochemical characteristic

CLC Number:

P588.1

KANG Congxuan, YANG Xianzhong, CAI Yitao, ZONG Wen, HUANG Xianjue, KONG Guanglin, LI Chaowei. Review of Geochemical Characteristics of Jingshan-Tushan Granites in Bengbu Uplift, Southeast Margin of North China Craton[J]. Geoscience, 2018, 32(06): 1242-1253.

Figures/Tables 15

Fig.1 Geological sketch map of Bengbu uplift belt(modified after 1∶200,000 Eastern Anhui Map and Song Lihong et al.[10])

Fig.2 Outcrop photo (a) and thin section microphotograph (b) of the Jingshan granites

Fig.3 Outcrop photo (a) and thin section microphotograph (b) of the Tushan granites

Table 1 Major element compositions of the Jingshan-Tu shan granites(%)

样品	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	FeO	MnO	MgO	CaO	Na₂O
DJS-1	73.04	0.07	14.65	0.32	0.28	0.03	1.57	0.13	3.73
DJS-2	72.63	0.10	14.55	0.44	0.46	0.03	1.26	0.17	3.92
DJS-3	72.42	0.10	14.92	0.52	0.56	0.04	1.84	0.18	3.20
DJS-4	74.92	0.09	13.94	0.20	0.68	0.06	0.14	1.41	3.71
DTS-1	72.34	0.07	15.11	0.42	0.47	0.04	1.91	0.13	3.33
DTS-2	73.49	0.07	14.17	0.30	0.29	0.02	1.26	0.06	4.22
DTS-3	73.67	0.07	13.90	0.56	0.68	0.08	0.22	1.37	4.49
DTS-4	73.35	0.08	13.94	0.48	0.83	0.03	0.43	1.52	4.25
样品	K₂O	P₂O₅	烧失量	总量	Na₂O +K₂O	K₂O/ Na₂O	σ	A/ CNK	A/ NK
DJS-1	4.74	0.02	0.80	99.38	8.47	1.27	2.39	1.27	1.30
DJS-2	4.96	0.02	0.80	99.34	8.88	1.27	2.66	1.20	1.23
DJS-3	4.92	0.02	0.62	99.34	8.12	1.54	2.24	1.37	1.41
DJS-4	3.92	0.02	0.55	99.64	7.63	1.06	1.82	1.08	1.35
DTS-1	4.87	0.02	0.71	99.42	8.20	1.46	2.29	1.38	1.41
DTS-2	4.60	0.01	0.93	99.42	8.82	1.09	2.55	1.18	1.19
DTS-3	3.90	0.03	0.47	99.44	8.39	0.87	2.30	0.99	1.20
DTS-4	4.20	0.05	0.37	99.53	8.45	0.99	2.35	0.98	1.21

Fig.4 Total alkali vs. silica classification diagram ((a)Base map after Middlemost[23]) and SiO2 vs. AR diagram ((b) Base map after Wright[24]) of the Jingshan-Tushan granites

Fig.5 K2O vs. SiO2 diagram ((a)solid line after Peccerillo[25]; dotted line after Middlemost [26] ) and A/CNK vs. A/NK diagram ((b)base map after Middlemost[23]) of the Jingshan-Tushan granites

Table 2 Trace element and rare earth element compositions of the Jingshan-Tushan granites (10-6)

样品	Pb	Cr	Ni	Co	Rb	Sr	Ba	V	Sc	Nb	Ta	Zr	Hf
DJS-1	39.60	12.30	17.10	410.00	107.00	457.00	1 700.00	13.00	1.20	5.10	1.40	50.70	<1
DJS-2	22.40	12.50	14.60	243.00	103.00	479.00	2 090.00	16.30	1.80	7.00	1.10	51.10	<1
DJS-3	40.70	12.90	15.00	344.00	97.10	545.00	1 960.00	12.00	2.40	12.30	1.50	71.70	1.10
DJS-4	-	4.70	2.10	0.20	109.00	443.00	1 947.00	-	1.30	7.90	0.40	91.60	2.90
DTS-1	25.10	13.80	16.30	289.00	80.20	527.00	1 480.00	13.80	1.60	5.00	1.10	42.50	<1
DTS-2	26.00	12.30	19.20	466.00	116.00	331.00	1 700.00	12.40	1.70	7.90	1.40	63.40	1.20
DTS-3	-	9.20	1.60	2.60	80.00	508.00	1851.30	508.00	-	6.20	-	94.00	-
样品	U	Th	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er
DJS-1	0.67	1.80	6.20	10.70	1.30	4.80	0.94	0.65	0.87	0.14	0.87	0.19	0.65
DJS-2	1.20	1.60	6.30	10.80	1.30	4.60	0.97	0.73	0.95	0.18	1.10	0.23	0.67
DJS-3	2.40	2.10	6.70	11.60	1.40	5.10	1.00	0.70	0.88	0.11	0.50	0.08	0.21
DJS-4	0.50	2.50	7.59	11.67	1.92	5.71	1.22	0.33	1.09	0.21	1.53	0.37	1.23
DTS-1	0.71	1.60	5.40	9.50	1.20	4.10	0.83	0.55	0.82	0.14	0.95	0.20	0.61
DTS-2	0.90	2.00	5.60	10.00	1.20	4.30	0.92	0.62	0.94	0.18	1.20	0.29	0.94
DTS-3	-	1.10	8.46	15.60	1.70	6.17	1.22	0.46	0.96	0.17	1.24	0.33	0.94
样品	Tm	Yb	Lu	Y	ΣREE	LREE/HREE		(La/Yb)_N		LREE	HREE	δEu	δCe
DJS-1	0.12	0.93	0.16	6.10	28.52	6.26		4.78		24.59	3.93	2.16	0.88
DJS-2	0.11	0.72	0.11	7.20	28.77	6.07		6.28		24.70	4.07	2.30	0.88
DJS-3	0.03	0.24	0.04	2.60	28.59	12.69		20.02		26.50	2.09	2.23	0.88
DJS-4	0.23	1.63	0.28	9.61	35.01	4.33		3.34		28.44	6.57	0.86	0.73
DTS-1	0.10	0.68	0.11	6.20	25.19	5.98		5.70		21.58	3.61	2.01	0.88
DTS-2	0.18	1.30	0.22	10.00	27.89	4.31		3.09		22.64	5.25	2.02	0.90
DTS-3	0.13	0.74	0.10	7.66	38.22	7.29		8.20		33.61	4.61	1.25	0.95

Fig.6 Chondrite-normalized REE pattern(a) and primitive mantle-normalized spider diagram(b) of the Jingshan-Tushan granites (normalizing values after Sun et al.[27])

Table 3 LA-ICP-MS zircon U-Pb data of the Jingshan-Tushan granites

样品号	Th/10^-6	U/10^-6	Th/U	同位素比值								年龄/Ma
样品号	Th/10^-6	U/10^-6	Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁸Pb/²³²Th	1σ	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
DJS-1-1	223	2 610	0.09	0.049 3	0.000 8	0.169 4	0.003 1	0.024 9	0.000 2	0.007 9	0.000 2	162.2	40.0	158.9	2.9	158.7	1.6
DJS-1-3	150	811	0.18	0.054 6	0.001 1	0.193 0	0.004 0	0.025 6	0.000 3	0.009 1	0.000 2	394.4	44.3	179.2	3.7	163.3	1.7
DJS-1-4	601	3 506	0.17	0.056 2	0.000 8	0.198 3	0.003 0	0.025 6	0.000 3	0.009 5	0.000 2	460.2	30.8	183.7	2.7	162.9	1.7
DJS-1-5	1 764	8 774	0.20	0.082 3	0.001 2	0.290 7	0.004 3	0.025 6	0.000 3	0.010 0	0.000 2	1 253.6	27.5	259.1	3.9	163.0	1.6
DJS-1-6	699	4 464	0.16	0.058 3	0.000 8	0.202 7	0.003 0	0.025 2	0.000 3	0.009 5	0.000 2	539.8	29.8	187.4	2.8	160.6	1.6
DJS-1-7	589	3 620	0.16	0.082 8	0.001 4	0.294 4	0.005 0	0.025 8	0.000 3	0.010 0	0.000 2	1 265.4	33.9	262.0	4.5	164.1	1.7
DJS-1-8	552	4 452	0.12	0.060 4	0.000 9	0.216 9	0.003 3	0.026 1	0.000 3	0.010 9	0.000 2	616.7	30.5	199.3	3.0	165.8	1.7
DJS-1-9	283	2 219	0.13	0.078 6	0.001 1	0.283 2	0.004 5	0.026 1	0.000 3	0.010 0	0.000 2	1 162.3	27.8	253.2	4.1	166.3	1.7
DJS-1-10	314	2 085	0.15	0.061 0	0.000 9	0.217 4	0.004 1	0.025 8	0.000 3	0.010 1	0.000 3	640.3	33.4	199.8	3.8	164.5	1.8
DJS-1-11	1 273	5 593	0.23	0.050 6	0.000 7	0.182 1	0.002 8	0.026 1	0.000 3	0.006 9	0.000 1	221.2	31.1	169.8	2.6	166.2	1.7
DJS-1-12	435	2 134	0.20	0.050 4	0.000 8	0.178 4	0.003 1	0.025 7	0.000 3	0.006 5	0.000 1	212.5	36.6	166.7	2.9	163.4	2.0
DJS-1-13	53	786	0.07	0.061 9	0.001 9	0.219 6	0.007 2	0.025 7	0.000 3	0.016 7	0.000 9	671.7	67.2	201.6	6.6	163.7	2.2
DJS-1-14	34	415	0.08	0.048 8	0.001 3	0.242 6	0.006 8	0.036 1	0.000 4	0.010 8	0.000 5	136.3	62.4	220.6	6.1	228.6	2.4
DJS-1-15	21	115	0.19	0.056 5	0.009 1	0.205 9	0.033 8	0.026 4	0.000 4	0.009 7	0.001 2	472.3	357.7	190.1	31.2	168.1	2.6
DJS-1-16	264	2 288	0.12	0.054 4	0.000 8	0.194 0	0.003 3	0.025 9	0.000 3	0.009 6	0.000 2	388.8	32.1	180.0	3.1	164.5	1.9
DJS-1-17	108	1 145	0.09	0.055 2	0.001 1	0.193 9	0.004 0	0.025 5	0.000 3	0.012 1	0.000 5	419.8	44.1	180.0	3.7	162.2	1.6
DTS-1-2	70	738	0.10	0.065 5	0.001 6	0.226 8	0.005 7	0.025 1	0.000 4	0.013 7	0.000 6	790.6	50.2	207.5	5.2	159.9	2.3
DTS-1-3	384	2 271	0.17	0.057 3	0.000 9	0.197 1	0.003 6	0.025 0	0.000 4	0.009 8	0.000 2	501.3	36.4	182.6	3.4	158.9	2.3
DTS-1-4	47	533	0.09	0.074 3	0.002 5	0.263 8	0.009 4	0.025 8	0.000 4	0.020 0	0.001 0	1 049.0	68.2	237.7	8.5	163.9	2.4
DTS-1-5	180	1 858	0.10	0.048 9	0.000 9	0.174 0	0.003 4	0.025 8	0.000 4	0.007 9	0.000 2	145.1	40.9	162.9	3.2	164.1	2.4
DTS-1-7	632	2 375	0.27	0.053 9	0.000 9	0.186 9	0.003 4	0.025 1	0.000 4	0.008 0	0.000 2	367.2	35.9	173.9	3.1	160.1	2.3
DTS-1-8	89	931	0.10	0.057 7	0.001 5	0.201 9	0.005 2	0.025 4	0.000 4	0.013 1	0.000 7	519.6	56.1	186.7	4.8	161.4	2.4
DTS-1-9	468	3 785	0.12	0.067 6	0.001 0	0.237 4	0.004 1	0.025 5	0.000 4	0.013 8	0.000 4	856.7	31.4	216.3	3.8	162.1	2.3
DTS-1-10	25	184	0.14	0.068 6	0.003 6	0.246 8	0.013 2	0.026 1	0.000 4	0.015 2	0.000 9	887.8	107.2	224.0	12.0	166.0	2.5
DTS-1-11	86	869	0.10	0.061 7	0.001 4	0.216 8	0.005 0	0.025 5	0.000 4	0.012 9	0.000 6	664.0	47.6	199.2	4.6	162.2	2.4
DTS-1-12	93	1 226	0.08	0.106 9	0.002 5	0.383 1	0.008 9	0.026 0	0.000 4	0.047 3	0.002 3	1 747.8	43.1	329.3	7.7	165.4	2.4
DTS-1-13	54	519	0.10	0.097 5	0.002 9	0.351 8	0.011 1	0.026 2	0.000 4	0.030 0	0.001 8	1 576.6	55.2	306.1	9.7	166.6	2.4
DTS-1-14	73	996	0.07	0.051 3	0.001 2	0.186 7	0.004 6	0.026 4	0.000 4	0.010 2	0.000 6	252.3	53.5	173.8	4.3	168.1	2.8
DTS-1-15	122	869	0.14	0.061 6	0.001 6	0.222 5	0.005 8	0.026 2	0.000 4	0.012 3	0.000 9	661.0	54.1	204.0	5.3	166.7	2.4
DTS-1-16	40	326	0.12	0.075 9	0.003 3	0.273 5	0.012 5	0.026 1	0.000 4	0.017 9	0.001 5	1 093.1	88.0	245.5	11.2	166.3	2.4
DTS-1-17	22	328	0.07	0.065 5	0.002 7	0.235 3	0.009 9	0.026 1	0.000 4	0.027 5	0.002 0	789.4	86.1	214.6	9.1	165.9	2.4
DTS-1-18	18	237	0.08	0.062 9	0.002 4	0.225 9	0.009 2	0.026 1	0.000 4	0.014 0	0.000 9	704.7	81.5	206.8	8.4	165.8	2.5
DTS-1-21	21	251	0.09	0.073 7	0.003 4	0.265 8	0.012 5	0.026 2	0.000 4	0.027 1	0.001 6	1 032.6	92.1	239.3	11.3	166.5	2.4
DTS-1-22	19	246	0.08	0.094 6	0.004 5	0.332 7	0.017 0	0.025 5	0.000 4	0.039 9	0.002 5	1 520.2	89.6	291.6	14.9	162.4	2.5
DTS-1-23	76	713	0.11	0.063 8	0.002 0	0.218 9	0.007 1	0.024 9	0.000 4	0.015 7	0.000 8	736.2	65.2	201.0	6.5	158.4	2.3

Table 3 LA-ICP-MS zircon U-Pb data of the Jingshan-Tushan granites

样品号	Th/10^-6	U/10^-6	Th/U	同位素比值								年龄/Ma
样品号	Th/10^-6	U/10^-6	Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁸Pb/²³²Th	1σ	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
DJS-1-1	223	2 610	0.09	0.049 3	0.000 8	0.169 4	0.003 1	0.024 9	0.000 2	0.007 9	0.000 2	162.2	40.0	158.9	2.9	158.7	1.6
DJS-1-3	150	811	0.18	0.054 6	0.001 1	0.193 0	0.004 0	0.025 6	0.000 3	0.009 1	0.000 2	394.4	44.3	179.2	3.7	163.3	1.7
DJS-1-4	601	3 506	0.17	0.056 2	0.000 8	0.198 3	0.003 0	0.025 6	0.000 3	0.009 5	0.000 2	460.2	30.8	183.7	2.7	162.9	1.7
DJS-1-5	1 764	8 774	0.20	0.082 3	0.001 2	0.290 7	0.004 3	0.025 6	0.000 3	0.010 0	0.000 2	1 253.6	27.5	259.1	3.9	163.0	1.6
DJS-1-6	699	4 464	0.16	0.058 3	0.000 8	0.202 7	0.003 0	0.025 2	0.000 3	0.009 5	0.000 2	539.8	29.8	187.4	2.8	160.6	1.6
DJS-1-7	589	3 620	0.16	0.082 8	0.001 4	0.294 4	0.005 0	0.025 8	0.000 3	0.010 0	0.000 2	1 265.4	33.9	262.0	4.5	164.1	1.7
DJS-1-8	552	4 452	0.12	0.060 4	0.000 9	0.216 9	0.003 3	0.026 1	0.000 3	0.010 9	0.000 2	616.7	30.5	199.3	3.0	165.8	1.7
DJS-1-9	283	2 219	0.13	0.078 6	0.001 1	0.283 2	0.004 5	0.026 1	0.000 3	0.010 0	0.000 2	1 162.3	27.8	253.2	4.1	166.3	1.7
DJS-1-10	314	2 085	0.15	0.061 0	0.000 9	0.217 4	0.004 1	0.025 8	0.000 3	0.010 1	0.000 3	640.3	33.4	199.8	3.8	164.5	1.8
DJS-1-11	1 273	5 593	0.23	0.050 6	0.000 7	0.182 1	0.002 8	0.026 1	0.000 3	0.006 9	0.000 1	221.2	31.1	169.8	2.6	166.2	1.7
DJS-1-12	435	2 134	0.20	0.050 4	0.000 8	0.178 4	0.003 1	0.025 7	0.000 3	0.006 5	0.000 1	212.5	36.6	166.7	2.9	163.4	2.0
DJS-1-13	53	786	0.07	0.061 9	0.001 9	0.219 6	0.007 2	0.025 7	0.000 3	0.016 7	0.000 9	671.7	67.2	201.6	6.6	163.7	2.2
DJS-1-14	34	415	0.08	0.048 8	0.001 3	0.242 6	0.006 8	0.036 1	0.000 4	0.010 8	0.000 5	136.3	62.4	220.6	6.1	228.6	2.4
DJS-1-15	21	115	0.19	0.056 5	0.009 1	0.205 9	0.033 8	0.026 4	0.000 4	0.009 7	0.001 2	472.3	357.7	190.1	31.2	168.1	2.6
DJS-1-16	264	2 288	0.12	0.054 4	0.000 8	0.194 0	0.003 3	0.025 9	0.000 3	0.009 6	0.000 2	388.8	32.1	180.0	3.1	164.5	1.9
DJS-1-17	108	1 145	0.09	0.055 2	0.001 1	0.193 9	0.004 0	0.025 5	0.000 3	0.012 1	0.000 5	419.8	44.1	180.0	3.7	162.2	1.6
DTS-1-2	70	738	0.10	0.065 5	0.001 6	0.226 8	0.005 7	0.025 1	0.000 4	0.013 7	0.000 6	790.6	50.2	207.5	5.2	159.9	2.3
DTS-1-3	384	2 271	0.17	0.057 3	0.000 9	0.197 1	0.003 6	0.025 0	0.000 4	0.009 8	0.000 2	501.3	36.4	182.6	3.4	158.9	2.3
DTS-1-4	47	533	0.09	0.074 3	0.002 5	0.263 8	0.009 4	0.025 8	0.000 4	0.020 0	0.001 0	1 049.0	68.2	237.7	8.5	163.9	2.4
DTS-1-5	180	1 858	0.10	0.048 9	0.000 9	0.174 0	0.003 4	0.025 8	0.000 4	0.007 9	0.000 2	145.1	40.9	162.9	3.2	164.1	2.4
DTS-1-7	632	2 375	0.27	0.053 9	0.000 9	0.186 9	0.003 4	0.025 1	0.000 4	0.008 0	0.000 2	367.2	35.9	173.9	3.1	160.1	2.3
DTS-1-8	89	931	0.10	0.057 7	0.001 5	0.201 9	0.005 2	0.025 4	0.000 4	0.013 1	0.000 7	519.6	56.1	186.7	4.8	161.4	2.4
DTS-1-9	468	3 785	0.12	0.067 6	0.001 0	0.237 4	0.004 1	0.025 5	0.000 4	0.013 8	0.000 4	856.7	31.4	216.3	3.8	162.1	2.3
DTS-1-10	25	184	0.14	0.068 6	0.003 6	0.246 8	0.013 2	0.026 1	0.000 4	0.015 2	0.000 9	887.8	107.2	224.0	12.0	166.0	2.5
DTS-1-11	86	869	0.10	0.061 7	0.001 4	0.216 8	0.005 0	0.025 5	0.000 4	0.012 9	0.000 6	664.0	47.6	199.2	4.6	162.2	2.4
DTS-1-12	93	1 226	0.08	0.106 9	0.002 5	0.383 1	0.008 9	0.026 0	0.000 4	0.047 3	0.002 3	1 747.8	43.1	329.3	7.7	165.4	2.4
DTS-1-13	54	519	0.10	0.097 5	0.002 9	0.351 8	0.011 1	0.026 2	0.000 4	0.030 0	0.001 8	1 576.6	55.2	306.1	9.7	166.6	2.4
DTS-1-14	73	996	0.07	0.051 3	0.001 2	0.186 7	0.004 6	0.026 4	0.000 4	0.010 2	0.000 6	252.3	53.5	173.8	4.3	168.1	2.8
DTS-1-15	122	869	0.14	0.061 6	0.001 6	0.222 5	0.005 8	0.026 2	0.000 4	0.012 3	0.000 9	661.0	54.1	204.0	5.3	166.7	2.4
DTS-1-16	40	326	0.12	0.075 9	0.003 3	0.273 5	0.012 5	0.026 1	0.000 4	0.017 9	0.001 5	1 093.1	88.0	245.5	11.2	166.3	2.4
DTS-1-17	22	328	0.07	0.065 5	0.002 7	0.235 3	0.009 9	0.026 1	0.000 4	0.027 5	0.002 0	789.4	86.1	214.6	9.1	165.9	2.4
DTS-1-18	18	237	0.08	0.062 9	0.002 4	0.225 9	0.009 2	0.026 1	0.000 4	0.014 0	0.000 9	704.7	81.5	206.8	8.4	165.8	2.5
DTS-1-21	21	251	0.09	0.073 7	0.003 4	0.265 8	0.012 5	0.026 2	0.000 4	0.027 1	0.001 6	1 032.6	92.1	239.3	11.3	166.5	2.4
DTS-1-22	19	246	0.08	0.094 6	0.004 5	0.332 7	0.017 0	0.025 5	0.000 4	0.039 9	0.002 5	1 520.2	89.6	291.6	14.9	162.4	2.5
DTS-1-23	76	713	0.11	0.063 8	0.002 0	0.218 9	0.007 1	0.024 9	0.000 4	0.015 7	0.000 8	736.2	65.2	201.0	6.5	158.4	2.3

Fig.7 LA-ICP-MS zircon U-Pb age concordia diagrams for the Jingshan-Tushan granites

Table 4 Zircon Lu-Hf isotopic compositions of the Jingshan granites

样号	t/Ma	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	ε_Hf(t)	T_DM	$T D M 2$	f_Lu-Hf
DJS-1-1	159	0.071 140	0.002 629	0.282 084	0.000 016	-24.34	-21.14	1 718	2 542	-0.92
DJS-1-2	1 724	0.079 330	0.003 112	0.282 281	0.000 022	-17.36	17.51	1 451	1 312	-0.91
DJS-1-3	163	0.065 974	0.002 473	0.282 260	0.000 019	-18.12	-14.81	1 457	2 150	-0.93
DJS-1-4	163	0.023 143	0.000 917	0.282 358	0.000 020	-14.64	-11.18	1 260	1 920	-0.97
DJS-1-5	163	0.077 667	0.002 859	0.282 204	0.000 024	-20.10	-16.83	1 554	2 276	-0.91
DJS-1-6	161	0.086 668	0.003 337	0.282 257	0.000 023	-18.22	-15.05	1 496	2 162	-0.9
DJS-1-7	164	0.049 394	0.001 493	0.282 154	0.000 022	-21.86	-18.44	1 568	2 378	-0.96
DJS-1-8	166	0.066 884	0.002 472	0.282 221	0.000 023	-19.48	-16.13	1 512	2 233	-0.93
DJS-1-9	166	0.083 528	0.002 965	0.282 166	0.000 022	-21.43	-18.11	1 614	2 359	-0.91
DJS-1-10	164	0.010 036	0.000 358	0.282 139	0.000 015	-22.38	-18.82	1 542	2 404	-0.99
DJS-1-11	166	0.055 563	0.002 150	0.282 162	0.000 016	-21.57	-18.18	1 584	2 363	-0.94
DJS-1-12	163	0.066 689	0.002 496	0.282 269	0.000 019	-17.78	-14.45	1 444	2 128	-0.92
DJS-1-13	164	0.111 115	0.003 713	0.282 189	0.000 024	-20.61	-17.42	1 613	2 312	-0.89
DJS-1-14	229	0.096 219	0.003 130	0.282 276	0.000 027	-17.54	-12.99	1 459	2 083	-0.91
DJS-1-15	168	0.035 265	0.001 136	0.282 138	0.000 021	-22.42	-18.88	1 575	2 409	-0.97
DJS-1-16	165	0.029 932	0.000 930	0.282 179	0.000 018	-20.98	-17.47	1 510	2 319	-0.97
DJS-1-17	162	0.120 376	0.004 043	0.282 335	0.000 028	-15.47	-12.36	1 408	1 991	-0.88

Table 4 Zircon Lu-Hf isotopic compositions of the Jingshan granites

样号	t/Ma	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	ε_Hf(t)	T_DM	$T D M 2$	f_Lu-Hf
DJS-1-1	159	0.071 140	0.002 629	0.282 084	0.000 016	-24.34	-21.14	1 718	2 542	-0.92
DJS-1-2	1 724	0.079 330	0.003 112	0.282 281	0.000 022	-17.36	17.51	1 451	1 312	-0.91
DJS-1-3	163	0.065 974	0.002 473	0.282 260	0.000 019	-18.12	-14.81	1 457	2 150	-0.93
DJS-1-4	163	0.023 143	0.000 917	0.282 358	0.000 020	-14.64	-11.18	1 260	1 920	-0.97
DJS-1-5	163	0.077 667	0.002 859	0.282 204	0.000 024	-20.10	-16.83	1 554	2 276	-0.91
DJS-1-6	161	0.086 668	0.003 337	0.282 257	0.000 023	-18.22	-15.05	1 496	2 162	-0.9
DJS-1-7	164	0.049 394	0.001 493	0.282 154	0.000 022	-21.86	-18.44	1 568	2 378	-0.96
DJS-1-8	166	0.066 884	0.002 472	0.282 221	0.000 023	-19.48	-16.13	1 512	2 233	-0.93
DJS-1-9	166	0.083 528	0.002 965	0.282 166	0.000 022	-21.43	-18.11	1 614	2 359	-0.91
DJS-1-10	164	0.010 036	0.000 358	0.282 139	0.000 015	-22.38	-18.82	1 542	2 404	-0.99
DJS-1-11	166	0.055 563	0.002 150	0.282 162	0.000 016	-21.57	-18.18	1 584	2 363	-0.94
DJS-1-12	163	0.066 689	0.002 496	0.282 269	0.000 019	-17.78	-14.45	1 444	2 128	-0.92
DJS-1-13	164	0.111 115	0.003 713	0.282 189	0.000 024	-20.61	-17.42	1 613	2 312	-0.89
DJS-1-14	229	0.096 219	0.003 130	0.282 276	0.000 027	-17.54	-12.99	1 459	2 083	-0.91
DJS-1-15	168	0.035 265	0.001 136	0.282 138	0.000 021	-22.42	-18.88	1 575	2 409	-0.97
DJS-1-16	165	0.029 932	0.000 930	0.282 179	0.000 018	-20.98	-17.47	1 510	2 319	-0.97
DJS-1-17	162	0.120 376	0.004 043	0.282 335	0.000 028	-15.47	-12.36	1 408	1 991	-0.88

Table 5 Sm-Nd isotopic compositions of the Jingshan-Tushan granites

样号	Sm/10^-6	Nd/10^-6	¹⁴⁷Sm/¹⁴⁴Nd	¹⁴³Nd/¹⁴⁴Nd	(¹⁴³Nd/¹⁴⁴Nd)_i	T_DM/Ma	T_DM2/Ma	ε_Nd(0)	ε_Nd(t)	$f S m / N d$
DJS-1	0.95	5.07	0.113 20	0.511 72	0.511 599	2 164	2 264	-17.91	-16.18	-0.42
DJS-2	1.05	5.28	0.123 90	0.511 71	0.511 584	2 430	2 290	-18.02	-16.55	-0.37
DTS-1	0.76	3.72	0.120 30	0.511 70	0.511 571	2 361	2 308	-18.32	-16.73	-0.39

Table 5 Sm-Nd isotopic compositions of the Jingshan-Tushan granites

样号	Sm/10^-6	Nd/10^-6	¹⁴⁷Sm/¹⁴⁴Nd	¹⁴³Nd/¹⁴⁴Nd	(¹⁴³Nd/¹⁴⁴Nd)_i	T_DM/Ma	T_DM2/Ma	ε_Nd(0)	ε_Nd(t)	$f S m / N d$
DJS-1	0.95	5.07	0.113 20	0.511 72	0.511 599	2 164	2 264	-17.91	-16.18	-0.42
DJS-2	1.05	5.28	0.123 90	0.511 71	0.511 584	2 430	2 290	-18.02	-16.55	-0.37
DTS-1	0.76	3.72	0.120 30	0.511 70	0.511 571	2 361	2 308	-18.32	-16.73	-0.39

Fig.8 Temperature vs. εHf(t) diagram of the Jingshan granites

Fig.9 Petrogenetic discrimination diagrams of Jingshan-Tushan granites (base map after Collins et al.[37])

Fig.10 Tectonic discrimination diagrams of (Y+Nb) vs. Rb (a) and (Yb+Ta) vs.Rb (b) for the Jingshan-Tushan granites(base map after Pearce et al.[43])

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