辽东半岛早白垩世鸡冠山花岗斑岩的岩石成因:岩石地球化学及单矿物U-Pb-Hf-Nd同位素的制约

doi:10.13745/j.esf.sf.2024.11.81

摘要/Abstract

摘要：

辽东半岛早白垩世岩浆作用为揭示华北克拉通东北部晚中生代岩浆-构造演化提供了制约。文章选择丹东地区鸡冠山花岗斑岩为研究对象,在野外地质调查和岩石学、岩相学研究基础上,开展全岩岩石地球化学和锆石U-Pb年代学、锆石Hf同位素和磷灰石原位微量元素-Nd同位素分析等方面的研究,约束其岩石成因及形成的构造背景。结果表明: 花岗斑岩中锆石发育生长环带,结合较高的Th/U值(0.27~1.12),暗示其为岩浆成因;岩浆锆石U-Pb测年结果为(126±1.4) Ma,表明鸡冠山花岗斑岩形成于早白垩世。花岗斑岩具较高的SiO₂(75.70%~76.07%)、全碱(Na₂O+K₂O,7.88%~8.30%)质量分数,以及较低的MgO(0.08%~0.15%)质量分数,为弱过铝质和高钾钙碱性系列岩石。花岗斑岩富集轻稀土元素(LREEs),亏损重稀土元素(HREEs),具明显的Eu负异常特征,富集Rb、Th和U等大离子亲石元素(LILEs)并亏损Nb和Ta等高场强元素(HFSEs),指示其弧岩浆的属性。花岗斑岩中磷灰石为岩浆成因,富集LREEs和LILEs,亏损HREEs和HFSEs,与全岩的稀土和微量元素特征相似。鸡冠山花岗斑岩为高分异I型花岗岩,结合样品具相对富集的锆石ε_Hf(t)值(-15.5~-20.1)和磷灰石ε_Nd(t)值(-15.0~-16.7)以及相对古老的Nd-Hf二阶段模式年龄(2 454~2 135 Ma),表明鸡冠山花岗斑岩起源于古元古代大陆下地壳的部分熔融,并主要以辽河群变火成岩为主,形成于早白垩世古太平洋板片向华北克拉通东部之下俯冲-后撤的伸展构造背景。

关键词: 辽东半岛, 早白垩世, 花岗斑岩, 磷灰石, 锆石

Abstract:

We systematically study the characteristics of zircon U-Pb geochronology, whole-rock major and trace elements, in-situ apatite trace elements and Nd isotopes, and in-situ zircon Hf isotopes of the Jiguanshan granite porphyry in the Liaodong Peninsula, northeastern North China Craton, aiming to reevaluate its emplacement age and petrogensis, and further to constrain its tectonic significance. The zircon grains in the Jiguanshan granite porphyry show euhedral to subhedral textures, typical oscillatory growth zoning, and high Th/U(0.27-1.12) ratios, indicating a magmatic origin. The zircon U-Pb dating results of fifteen magmatic zircon grains illustrate that the Jiguanshan granite porphyry formed in Early Cretaceous(126±1.4 Ma). The Jiguanshan granite porphyry shows relatively high SiO₂(75.70%-76.07%) and alkali(Na₂O+K₂O, 7.88%-8.30%) but low MgO(0.08%-0.15%) contents (mass fraction). The aluminum saturation index of the Jiguanshan granite porphyry ranges from 1.19 to 1.30, with a peraluminous characteristics. In addition, the Jiguanshan granite porphyry is enriched in light rare earth elements(LREEs), but depleted in heavy rare earth elements(HREEs) with distinctly negative Eu anomalies(Eu/Eu^*=0.36-0.51). Furthermore, the Jiguanshan granite porphyry exhibits a typical arc affinity, with enrichment in large ion lithophile elements(LILEs; e.g., Rb, Th, U) and depletion in high field strength elements(HFSEs; e.g., Nb, Ta). The apatite grains in the Jiguanshan granite porphyry are of magmatic origin. They are enriched in LREEs and LILEs, and depleted in HREEs and HFSEs, with distinctly negative Eu anomalies(Eu/Eu^*=0.11-0.24), which are similar with its host rock. The Jiguanshan granite porphyry belongs to highly fractionated I-type granite. Combining with the relatively low zircon ε_Hf(t) values(-15.5 to -20.1), and apatite ε_Nd(t) values(-15.0 to -16.7), as well as relatively old two-stage Nd-Hf model age (2454-2135 Ma), we believe that the Jiguanshan granite porphyry originated from partial melting of the Paleoproterozoic lower crust that mainly consists of meta-igneous rocks of the Liaohe Group. In combination with the extensive distribution of A-type granites, metamorphic core complexes and large-scale extensional basins in the study area, as well as the migration of magmatic activity from inland to trench during the Late Jurassic to Early Cretaceous, we conclude that the Jiguanshan granite porphyry formed in the extensional tectonic setting related to the roll-back of the subducted Paleo-Pacific plate towards the northeastern North China Craton.

Key words: Liaodong Peninsula, Early Cretaceous, granite porphyry, apatite, zircon

中图分类号:

吴渴, 闫相宇, 杨冬红. 辽东半岛早白垩世鸡冠山花岗斑岩的岩石成因:岩石地球化学及单矿物U-Pb-Hf-Nd同位素的制约[J]. 地学前缘, 2025, 32(4): 388-404.

WU Ke, YAN Xiangyu, YANG Donghong. Petrogenesis of the Early Cretaceous Jiguanshan granite porphyry in the Liaodong Peninsula: Constraints from geochemistry and single mineral U-Pb-Hf-Nd isotopes[J]. Earth Science Frontiers, 2025, 32(4): 388-404.

图/表 17

图1 研究区大地构造位置与地质简图 a—中国东北部主要构造单元简图; b—辽东半岛地质简图(据文献[4,9-11,20-21]); c—鸡冠山花岗斑岩地质简图及采样位置(据文献[14])。

Fig.1 Tectonic location and geological sketch of the study area. (a) Simplified geological map of the northeastern China, (b) simplified geological map of the Liaodong Peninsula(adapted from [4,9-11,20-21]) and (c) simplified geological map of the Jiguanshan granite porphyry and sample locations (adapted from [14]).

图2 鸡冠山花岗斑岩岩石组合特征 a—野外产状图;b—镜下显微照片。矿物缩写: Q—石英; Pl—斜长石; Or—正长石; Ap—磷灰石。

Fig.2 Petrochemical characteristics of the Jiguanshan granite porphyry. (a) Field photos and (b) photomicrographs of the Jiguanshan granite porphyry. Mineral abbreviations: Q, quartz; Pl, plagioclase; Or, orthoclase; Ap, apatite.

图3 鸡冠山花岗斑岩中锆石年代学结果 a—锆石代表性CL图像; b—锆石U-Pb年龄谐和图; c—加权平均年龄图。

Fig.3 Zircon geochronology results of the Jiguanshan granite porphyry. (a) Representative cathodoluminescence (CL) images of zircons from the Jiguanshan granite porphyry, (b) LA-ICP-MS zircon U-Pb concordia diagram and (c) weighted mean ages of the Jiguanshan granite porphyry.

表1 辽东半岛鸡冠山花岗斑岩LA-ICP-MS锆石U-Pb同位素分析结果

Table 1 LA-ICP-MS zircon U-Pb isotopic analytic data of the Jiguanshan granite porphyry in the Liaodong Peninsula

测点号	w_B/10^-6		Th/ U	同位素比值及误差							年龄及误差/Ma
测点号	Th	U	Th/ U	²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ		²⁰⁷Pb/ ²⁰⁶Pb	1σ	²⁰⁷Pb/ ²³⁵U	1σ	²⁰⁶Pb/ ²³⁸U	1σ
21L03-1-1	420	903	0.47	0.048 97	0.002 55	0.130 95	0.006 72	0.019 27		0.000 20	146	98	125	6	123	1
21L03-1-2	584	1 097	0.53	0.049 49	0.002 03	0.138 36	0.005 67	0.020 16		0.000 22	171	76	132	5	129	1
21L03-1-3	682	946	0.72	0.048 89	0.001 75	0.135 04	0.004 73	0.019 99		0.000 25	143	58	129	4	128	2
21L03-1-4	472	522	0.90	0.049 73	0.002 87	0.128 63	0.007 27	0.018 76		0.000 28	182	102	123	7	120	2
21L03-1-5	907	808	1.12	0.053 08	0.003 31	0.146 59	0.008 70	0.020 07		0.000 42	332	97	139	8	128	3
21L03-1-6	261	253	1.03	0.058 25	0.004 75	0.155 15	0.012 13	0.019 63		0.000 36	539	140	146	11	125	2
21L03-1-8	313	671	0.47	0.048 99	0.003 01	0.134 32	0.008 35	0.019 76		0.000 26	147	116	128	7	126	2
21L03-1-10	457	1 134	0.40	0.049 62	0.001 77	0.136 20	0.004 87	0.019 83		0.000 18	177	66	130	4	127	1
21L03-1-11	247	494	0.50	0.050 51	0.002 07	0.135 59	0.005 38	0.019 58		0.000 20	219	73	129	5	125	1
21L03-1-12	385	737	0.52	0.050 87	0.003 55	0.138 77	0.010 22	0.019 66		0.000 27	235	142	132	9	125	2
21L03-1-13	745	1 136	0.66	0.049 29	0.002 42	0.135 40	0.006 53	0.019 91		0.000 22	162	90	129	6	127	1
21L03-1-14	88	322	0.27	0.052 02	0.004 05	0.139 97	0.010 57	0.01975		0.00037	286	138	133	9	126	2
21L03-1-15	235	233	1.01	0.058 72	0.003 58	0.158 00	0.008 76	0.019 83		0.000 32	557	93	149	8	127	2

表2 辽东半岛鸡冠山花岗斑岩主量元素和微量元素分析结果

Table 2 Whole-rock major and trace elements analytic data of the Jiguanshan granite porphyry in the Liaodong Peninsula

样品号	主量元素含量/%
样品号	SiO₂	TiO₂	Al₂O₃	^TFe₂O₃	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	LOI	Total
21L03-1	75.70	0.14	13.00	1.51	0.05	0.15	0.11	3.25	4.96	0.04	0.81	99.72
21L03-5	76.03	0.10	13.51	1.24	0.02	0.09	0.09	3.06	4.82	0.02	0.87	99.86
21L03-6	76.07	0.10	13.17	1.08	0.02	0.08	0.11	3.12	5.19	0.01	0.61	99.56
样品号	微量元素含量/10^-6
样品号	Be	Sc	V	Cr	Co	Ni	Cu	Zn	Ga	Rb	Sr	Y
21L03-1	1.96	1.59	8.26	16.77	1.20	6.60	1.38	23.74	17.17	226.70	53.50	13.04
21L03-5	5.11	1.76	2.21	10.10	0.43	2.51	3.09	153.50	17.53	246.60	73.45	7.87
21L03-6	1.90	1.79	1.97	9.26	0.29	3.55	7.44	52.50	13.85	194.15	62.75	9.20
样品号	微量元素含量/10^-6
样品号	Zr	Nb	Cs	Ba	Hf	Ta	Pb	Th	U	Ge	Li	Sn
21L03-1	135.60	16.80	1.08	306.35	5.37	3.14	24.05	18.88	3.84	2.38	8.71	2.01
21L03-5	92.00	13.59	2.32	427.90	3.91	2.89	34.00	21.92	4.63	2.17	9.38	7.25
21L03-6	72.35	11.98	1.63	328.95	3.30	2.58	29.74	23.35	5.27	1.89	5.80	3.13
样品号	微量元素含量/10^-6
样品号	Tl	Ti	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho
21L03-1	1.14	865.28	6.36	38.17	1.72	5.95	1.44	0.18	1.70	0.33	2.27	0.52
21L03-5	1.35	607.62	17.39	43.97	3.61	11.67	2.07	0.27	1.73	0.25	1.49	0.31
21L03-6	1.00	582.22	22.39	45.30	4.79	15.74	2.92	0.48	2.74	0.35	1.86	0.37
样品号	微量元素含量/10^-6							(La/Yb)_N	Eu/Eu^*	Rb/Sr	Sr/Y	Nb/Ta
样品号	Er	Tm	Yb	Lu	∑REE	∑LREE	∑HREE	(La/Yb)_N	Eu/Eu^*	Rb/Sr	Sr/Y	Nb/Ta
21L03-1	1.67	0.29	2.07	0.32	62.97	53.81	9.16	2.07	0.36	4.24	4.10	5.36
21L03-5	0.94	0.15	1.02	0.15	85.00	78.97	6.03	11.54	0.42	3.36	9.34	4.70
21L03-6	1.07	0.17	1.08	0.17	99.43	91.61	7.82	14.02	0.51	3.09	6.82	4.64

图4 鸡冠山花岗斑岩主量元素判别图(丹东地区I型花岗岩数据据文献[9,20];千山A型花岗岩数据据文献[21]) a—(K2O+Na2O)-SiO2(TAS)图(据文献[31]); b—K2O-SiO2图(据文献[32])。

Fig.4 Major element discrimination diagram of the Jiguanshan granite porphyry. (a) (K2O+Na2O) vs. SiO2 diagram (adapted from [31]) and (b) K2O vs. SiO2 diagram (adapted from [32]) of the Jiguanshan granite porphyry. Data of the Dandong I-type granite are from [9,20] and the Qianshan A-type granite from [21].

图5 鸡冠山花岗斑岩微量元素判别图(球粒陨石和原始地幔数据来源于文献[33], 其他文献数据来源同图4) a—球粒陨石标准化稀土元素配分型式图; b—原始地幔标准化微量元素蛛网图。

Fig.5 Trace element discrimination diagram of the Jiguanshan granitic porphyry. (a) Chondrite-normalized REE patterns and (b) primitive mantle (PM)-normalized trace element diagrams. The chondrite and PM values are from [33]. Literature data are the same as Fig.4.

图6 鸡冠山花岗斑岩磷灰石的微量元素组成(球粒陨石和原始地幔数据来源于文献[33],I型花岗岩和S型花岗岩中磷灰石数据来源于文献[35]) a—磷灰石代表性CL图像; b—球粒陨石标准化稀土元素配分型式图; c—原始地幔标准化微量元素蛛网图。

Fig.6 Trace element composition of apatite from the Jiguanshan granite porphyry. (a) Representative CL images of apatites from the Jiguanshan granite porphyry, (b) chondrite-normalized REE patterns and (c) PM normalized trace element diagrams for the apatite grains and host granite. The chondrite and PM values are from [33]. The apatite’s data of I-type and S-type granites are from [35] and references therein.

表3 辽东半岛鸡冠山花岗斑岩磷灰石微量元素分析结果

Table 3 Apatite trace elements analytic data of Jiguanshan granite porphyry in Liaodong Peninsula

样品号		微量元素含量/10^-6
样品号		Rb	Sr		Y			Zr	Nb	Cs	Ba		Hf		Pb		Th		U		La		Ce		Pr
21L3-1-01		0.24	338.06		1 163.58			1.88	0.01	0.00	1.38		0.02		3.89		36.64		9.33		1 502.72		4 052.83		468.91
21L3-1-02		0.54	325.22		793.61			1.10	0.00	0.05	4.65		0.00		3.36		11.87		2.70		817.38		2 255.64		282.54
21L3-1-03		0.00	341.69		826.02			2.29	0.02	0.03	1.53		0.01		3.49		23.24		5.73		1 265.17		3 269.44		366.28
21L3-1-04		0.21	245.16		888.35			3.22	0.00	0.00	1.74		0.05		3.19		13.39		3.74		850.36		2 402.37		292.85
21L3-1-05		0.00	372.97		796.39			2.07	0.01	0.07	1.86		0.01		3.56		22.76		5.05		1 151.19		2 996.50		342.71
21L3-1-06		0.15	210.01		927.36			4.08	0.01	0.03	0.64		0.04		3.12		15.78		4.17		867.63		2 475.38		302.00
21L3-1-07		0.44	238.52		1 277.60			2.30	0.02	0.13	0.35		0.02		3.96		34.72		8.08		1 067.82		3 179.90		394.85
21L3-1-08		0.00	391.93		526.11			0.03	0.00	0.00	1.92		0.00		3.27		5.62		2.55		658.90		1 597.25		201.88
21L3-1-09		1.72	408.13		900.73			0.89	0.05	0.00	2.32		0.02		2.80		14.88		3.87		441.52		1 303.10		190.51
21L3-1-10		0.00	278.68		655.17			0.87	0.01	0.05	1.40		0.02		3.56		13.56		4.07		1 075.99		2 864.07		324.45
样品号	微量元素含量/10^-6																							Eu/Eu^*		Nd/Nd^*
样品号	Nd			Sm		Eu	Gd		Tb	Dy		Ho		Er		Tm		Yb		Lu		∑REE		Eu/Eu^*		Nd/Nd^*
21L3-1-01	2 080.56			389.99		26.82	316.37		42.14	223.42		41.56		100.65		12.44		68.84		8.94		10 500.09		0.23		1.19
21L3-1-02	1 244.49			249.96		15.20	220.03		27.20	148.65		27.86		68.47		7.34		44.94		6.17		6 209.48		0.19		1.16
21L3-1-03	1 597.69			289.81		20.30	225.46		29.04	153.30		28.05		67.90		8.51		48.18		6.14		8 201.44		0.23		1.19
21L3-1-04	1 376.71			293.48		10.26	256.96		33.34	174.35		32.61		74.98		9.11		50.64		6.08		6 752.51		0.11		1.18
21L3-1-05	1 530.73			277.99		20.42	219.23		28.29	150.60		27.64		65.03		7.83		45.10		5.58		7 665.34		0.24		1.21
21L3-1-06	1 400.57			293.53		10.29	256.64		33.89	182.48		33.23		76.93		8.98		50.10		6.36		6 925.49		0.11		1.18
21L3-1-07	1 863.54			399.28		20.10	336.44		45.59	245.18		45.75		109.59		13.26		76.61		9.60		9 085.29		0.16		1.18
21L3-1-08	908.83			180.52		10.49	155.74		19.82	100.29		18.93		43.88		5.39		29.51		3.73		4 461.55		0.19		1.18
21L3-1-09	952.64			250.14		11.12	240.04		33.02	178.59		33.02		75.46		9.33		48.08		5.90		4 673.54		0.14		1.12
21L3-1-10	1 422.63			248.29		16.64	190.50		23.30	125.55		23.53		58.45		7.81		45.24		5.66		7 087.38		0.23		1.21

表3 辽东半岛鸡冠山花岗斑岩磷灰石微量元素分析结果

Table 3 Apatite trace elements analytic data of Jiguanshan granite porphyry in Liaodong Peninsula

样品号		微量元素含量/10^-6
样品号		Rb	Sr		Y			Zr	Nb	Cs	Ba		Hf		Pb		Th		U		La		Ce		Pr
21L3-1-01		0.24	338.06		1 163.58			1.88	0.01	0.00	1.38		0.02		3.89		36.64		9.33		1 502.72		4 052.83		468.91
21L3-1-02		0.54	325.22		793.61			1.10	0.00	0.05	4.65		0.00		3.36		11.87		2.70		817.38		2 255.64		282.54
21L3-1-03		0.00	341.69		826.02			2.29	0.02	0.03	1.53		0.01		3.49		23.24		5.73		1 265.17		3 269.44		366.28
21L3-1-04		0.21	245.16		888.35			3.22	0.00	0.00	1.74		0.05		3.19		13.39		3.74		850.36		2 402.37		292.85
21L3-1-05		0.00	372.97		796.39			2.07	0.01	0.07	1.86		0.01		3.56		22.76		5.05		1 151.19		2 996.50		342.71
21L3-1-06		0.15	210.01		927.36			4.08	0.01	0.03	0.64		0.04		3.12		15.78		4.17		867.63		2 475.38		302.00
21L3-1-07		0.44	238.52		1 277.60			2.30	0.02	0.13	0.35		0.02		3.96		34.72		8.08		1 067.82		3 179.90		394.85
21L3-1-08		0.00	391.93		526.11			0.03	0.00	0.00	1.92		0.00		3.27		5.62		2.55		658.90		1 597.25		201.88
21L3-1-09		1.72	408.13		900.73			0.89	0.05	0.00	2.32		0.02		2.80		14.88		3.87		441.52		1 303.10		190.51
21L3-1-10		0.00	278.68		655.17			0.87	0.01	0.05	1.40		0.02		3.56		13.56		4.07		1 075.99		2 864.07		324.45
样品号	微量元素含量/10^-6																							Eu/Eu^*		Nd/Nd^*
样品号	Nd			Sm		Eu	Gd		Tb	Dy		Ho		Er		Tm		Yb		Lu		∑REE		Eu/Eu^*		Nd/Nd^*
21L3-1-01	2 080.56			389.99		26.82	316.37		42.14	223.42		41.56		100.65		12.44		68.84		8.94		10 500.09		0.23		1.19
21L3-1-02	1 244.49			249.96		15.20	220.03		27.20	148.65		27.86		68.47		7.34		44.94		6.17		6 209.48		0.19		1.16
21L3-1-03	1 597.69			289.81		20.30	225.46		29.04	153.30		28.05		67.90		8.51		48.18		6.14		8 201.44		0.23		1.19
21L3-1-04	1 376.71			293.48		10.26	256.96		33.34	174.35		32.61		74.98		9.11		50.64		6.08		6 752.51		0.11		1.18
21L3-1-05	1 530.73			277.99		20.42	219.23		28.29	150.60		27.64		65.03		7.83		45.10		5.58		7 665.34		0.24		1.21
21L3-1-06	1 400.57			293.53		10.29	256.64		33.89	182.48		33.23		76.93		8.98		50.10		6.36		6 925.49		0.11		1.18
21L3-1-07	1 863.54			399.28		20.10	336.44		45.59	245.18		45.75		109.59		13.26		76.61		9.60		9 085.29		0.16		1.18
21L3-1-08	908.83			180.52		10.49	155.74		19.82	100.29		18.93		43.88		5.39		29.51		3.73		4 461.55		0.19		1.18
21L3-1-09	952.64			250.14		11.12	240.04		33.02	178.59		33.02		75.46		9.33		48.08		5.90		4 673.54		0.14		1.12
21L3-1-10	1 422.63			248.29		16.64	190.50		23.30	125.55		23.53		58.45		7.81		45.24		5.66		7 087.38		0.23		1.21

表4 辽东半岛鸡冠山花岗斑岩LA-MC-ICP-MS磷灰石Nd同位素分析结果

Table 4 LA-MC-ICP-MS apatite Nd isotope analytic data of the Jiguanshan granite porphyry in the Liaodong Peninsula

样品号	¹⁴⁷Sm/¹⁴⁴Nd	¹⁴³Nd/¹⁴⁴Nd	2σ	ε_Nd(0)	ε_Nd(t)	f_Sm/Nd	T_DM1/Ma	T_DM2/Ma
21L03-1-01	0.109 249	0.511 782	0.000 023	-16.7	-15.3	-0.44	1 990	2 161
21L03-1-02	0.129 093	0.511 737	0.000 038	-17.6	-16.5	-0.34	2 532	2 253
21L03-1-03	0.118 893	0.511 751	0.000 025	-17.3	-16.1	-0.40	2 240	2 221
21L03-1-04	0.122 794	0.511 744	0.000 028	-17.4	-16.3	-0.38	2 346	2 235
21L03-1-05	0.115 211	0.511 745	0.000 030	-17.4	-16.1	-0.41	2 166	2 226
21L03-1-06	0.132 856	0.511 778	0.000 025	-16.8	-15.8	-0.32	2 574	2 194
21L03-1-07	0.127 898	0.511 812	0.000 036	-16.1	-15.0	-0.35	2 366	2 135
21L03-1-08	0.110 641	0.511 724	0.000 035	-17.8	-16.4	-0.44	2 101	2 253
21L03-1-09	0.141 462	0.511 737	0.000 051	-17.6	-16.7	-0.28	2 963	2 267
21L03-1-10	0.104 815	0.511 782	0.000 029	-16.7	-15.2	-0.47	1 909	2 155

表5 辽东半岛鸡冠山花岗斑岩LA-MC-ICP-MS锆石Hf同位素分析结果

Table 5 LA-MC-ICP-MS zircon Hf isotope analytic data of the Jiguanshan granite porphyry in the Liaodong Peninsula

测点号	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	ε_Hf(t)	T_DM1(Hf)/Ma	T_DM2(Hf)/Ma	f_Lu/Hf
21L03-01	0.074 905	0.001 798	0.282 130	0.000 035	-22.7	-20.1	1 614	2 454	-0.95
21L03-05	0.052 331	0.001 272	0.282 145	0.000 031	-22.2	-19.5	1 571	2 419	-0.96
21L03-06	0.044 290	0.001 142	0.282 177	0.000 030	-21.0	-18.4	1 521	2 347	-0.97
21L03-08	0.109 883	0.002 564	0.282 155	0.000 034	-21.8	-19.3	1 612	2 401	-0.92
21L03-10	0.042 837	0.001 103	0.282 195	0.000 026	-20.4	-17.7	1 494	2 307	-0.97
21L03-11	0.076 286	0.001 817	0.282 183	0.000 030	-20.8	-18.2	1 540	2 336	-0.95
21L03-12	0.043 803	0.001 082	0.282 201	0.000 033	-20.2	-17.5	1 485	2 294	-0.97
21L03-13	0.071 787	0.001 706	0.282 193	0.000 025	-20.5	-17.8	1 521	2 313	-0.95
21L03-14	0.023 320	0.000 614	0.282 248	0.000 027	-18.5	-15.8	1 402	2 187	-0.98
21L03-15	0.115 297	0.002 759	0.282 262	0.000 033	-18.1	-15.5	1 465	2 166	-0.92

图7 鸡冠山花岗斑岩成因类型判别图(据文献[40];文献数据来源同图4) a—TFeO/MgO-(Zr+Nb+Ce+Y)图; b—Nb-10000Ga/Al图; c—Ce-10000Ga/Al图; d—Zr-10000Ga/Al图。缩写:FG代表分异的花岗岩;OGT代表未分异的I、S和M花岗岩。

Fig.7 Discrimination diagram of genetic types of the Jiguanshan granite porphyry. (a) TFeO/MgO vs. (Zr + Nb + Ce + Y), (b) Nb vs. 10000Ga/Al, (c) Ce vs. 10000Ga/Al and (d) Zr vs. 10000Ga/Al discrimination diagrams (adapted from [40]). Literature data are the same as Fig.4. Abbreviations: FG, fractionated felsic granites; OGT, unfractionated I, S and M-type granites.

图8 鸡冠山花岗斑岩中磷灰石的成因判别图 a—Nd/Nd*-Sr图(据文献[45]; 数据来源文献[35]); b—Sr/Y-LREE 图(LREE: La-Nd; 据文献[35])。缩写:ALK代表富碱火成岩; HM代表浅色脉体/高级变质岩; IM代表I型花岗岩/基性火成岩; LM代表中低级变质岩/交代岩; S代表S型花岗岩; UM代表超基性岩。

Fig.8 Genetic discrimination diagram of apatite in the Jiguanshan granite porphyry. (a) Nd/Nd* vs. Sr diagram (adapted from [45]; data from [35]) and (b) Sr/Y vs. LREE diagram (LREE: defined here as La-Nd; after [35]) for apatite in the Jiguanshan granite porphyry. Abbreviations: ALK, alkali-rich igneous rocks; HM, leucosomes/high-grade metamorphic rocks; IM, mafic I-type granitoids and mafic igneous rocks; LM, low- and medium-grade metamorphic and metasomatic rocks; S, S-type granitoids; UM, ultramafic rocks.

图9 鸡冠山花岗斑岩源区特征判别图(据文献[49];文献数据来源同图4) a—Mg#[Mg#=Mg2+/(Mg2++Fe2+);摩尔分数比]-SiO2图; b—K2O/Na2O(质量分数比)-ASI[ASI=Al2O3/(CaO+K2O+Na2O);质量分数比]图。

Fig.9 Source characteristics discrimination diagram of the Jiguanshan granite porphyry. (a) Mg#[Mg# = Mg2+/(Mg2+ + Fe2+); mole fraction] vs. SiO2 and (b) K2O/Na2O (mass fraction) vs. ASI[ASI = Al2O3/(CaO + K2O + Na2O); mass fraction] diagrams (adapted from [49]) of source characteristics for the Jiguanshan granite porphyry. Literature data are the same as Fig.4.

图10 鸡冠山花岗斑岩同位素组成图(太古宙片麻岩和古元古代南辽河群锆石Hf同位素数据据文献[48];辽东半岛早白垩世花岗质岩石: 锆石Hf同位素数据据文献[9],磷灰石Nd同位素数据据文献[50]) a—锆石εHf(t)-年龄图(据文献[21]); b—磷灰石εNd(t)-年龄图(据文献[50])。

Fig.10 Isotopic composition diagram of the Jiguanshan granite porphyry. (a) Zircon εHf(t) vs. zircon U-Pb age (adapted from [21]) and (b) apatite εNd(t) vs. zircon U-Pb age (adapted from [50]) diagrams for the Jiguanshan granite porphyry. Zircon Hf isotopic data for the Archean gneisses and Paleoproterozoic South Liaohe Group are from [48]. Zircon Hf isotopic data and apatite Nd isotopic data for the Early Cretaceous granitoids in Liaodong Peninsula are from [9] and [50], respectively.

图11 鸡冠山花岗斑岩磷灰石微量元素协变图 a—Nd/Tb-REEs图; b—Th-REEs图; c—U-REEs图; d—Th/U-REEs图。

Fig.11 Co-variation diagrams of trace elements in apatite from Jiguanshan granite porphyry. (a) Nd/Tb, (b) Th, (c) U, and (d) Th/U vs. total REE contents diagrams showing variations in the chemistry of apatite in the Jiguanshan granite porphyry.

图12 鸡冠山花岗斑岩微量元素构造环境判别图(据文献[59];文献数据来源同图4) a—Rb-(Y + Nb)图; b—Nb-Y图

Fig.12 Tectonic settings discrimination diagram of trace elements for the Jiguanshan granite porphyry. (a) Rb vs.(Y+Nb) and (b) Nb vs. Y discrimination diagrams (adapted from [59]) of tectonic settings for the Jiguanshan granite porphyry. Literature data are the same as Fig.4.

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