辽西凌源河坎子碱性杂岩体的成因

陆露; 钱程; 赵珍

doi:10.3799/dqkx.2021.168

辽西凌源河坎子碱性杂岩体的成因

doi: 10.3799/dqkx.2021.168

陆露^{1, 2, ,},
钱程^3, , ,,
赵珍⁴

1.
沈阳师范大学古生物学院, 辽宁沈阳 110034
2.
自然资源部东北亚古生物演化重点实验室, 辽宁沈阳 110034
3.
中国地质调查局沈阳地质调查中心, 辽宁沈阳 110034
4.
中国地质科学院, 北京 100037

基金项目:

中国地质调查局项目 DD20190039

中国地质调查局项目 DD20160048-01

辽宁省教育厅科研项目 LQN201915

沈阳师范大学博士引进人才科技项目启动基金项目 BS201705

详细信息

作者简介:
陆露（1985-），女，讲师，构造地质学专业，从事岩石和构造相关的教学和研究工作.ORCID：0000-0002-0974-5012. E-mail：yangchunyoulu@163.com

通讯作者:
钱程，ORCID: 0000-0002-1626-1737. E-mail: qch1985123@163.com

中图分类号: P581
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出版历程
- 收稿日期: 2021-07-16
- 网络出版日期: 2023-10-31
- 刊出日期: 2023-10-25

Petrogenesis of Hekanzi Alkaline Complex in Lingyuan, West Liaoning

Lu Lu^{1, 2
,
,},
Qian Cheng^{3
, ,
,},
Zhao Zhen⁴

1.
College of Paleontology Shenyang Normal University, Shenyang 110034, China
2.
Key Laboratory of Evolution of Past Life in Northeast Asia, Ministry of Land and Resources, Shenyang 110034, China
3.
Shenyang Center, China Geological Survey, Shenyang 110034, China
4.
Chinese Academy of Geological Sciences, Beijing 100037, China

摘要

摘要: 为了较全面地认识华北克拉通早中生代碱性岩浆活动的性质，对河坎子碱性杂岩体进行了锆石U-Pb测年、地球化学和Sr-Nd-Hf同位素特征研究.河坎子碱性杂岩体中花岗斑岩和辉石正长岩的锆石U-Pb测年结果分别为227.7±1.5 Ma、225.8±1.2 Ma，为晚三叠世.花岗斑岩为过铝质岩石，具有钾玄岩特征；辉石正长岩为准铝质岩石，具有钾玄岩-高钾钙碱性特征；这两类岩石均具有右倾的球粒陨石标准化配分曲线、均为正铕异常.花岗斑岩和辉石正长岩的ε_Nd（t）值分别为-6.9~-5.5，-5.4~-4.7；ε_Hf（t）值分别为-4.32~-1.65，-1.01~-0.01.河坎子碱性杂岩体是由受俯冲影响的富集地幔部分熔融形成，其源区残留金云母、角闪石和石榴子石；该岩体的形成与古亚洲洋的闭合有关，是岩石圈地幔发生对流减薄和软流圈物质上涌的结果.
- 碱性杂岩体 /
- 岩石成因 /
- 凌源河坎子 /
- 华北克拉通北缘 /
- 早中生代 /
- 岩石学 /
- 构造 /
Abstract: The Hekanzi alkaline complex in Lingyuan, West Liaoning, is one important Early Mesozoic alkaline complex on the northern margin of the North China craton. In this paper, the Hekanzi alkaline complex was studied in detail by zircon U-Pb geochronology, major and trace elemental compositions and Sr-Nd-Hf isotopic compositions. The zircons from the granite porphyry and pyroxene syenite yielded U-Pb data of 227.7±1.5 Ma and 225.8±1.2 Ma, respectively. These results show that the rocks formed in the Late Triassic. Geochemical results show that the granite porphyries belong to perauminous rocks and shoshonite series. The pyroxene syenites belong to metaluminous rocks and high K shoshonite series. They both have similar right-leaning chondrite-normalized distribution curves and show obviously positive Eu anomalies. The Sr-Nd isotopic results show that ε_Nd(t) values of the granite porphyries vary from -6.9 to -5.5, and ε_Nd(t) values of the pyroxene syenites vary from -5.4 to -4.7. The zircon ε_Hf(t) values of the granite porphyries range from -4.32 to -1.65. The zircon ε_Hf(t) values of the pyroxene syenites are negative (ε_Hf(t)=-1.01 to -0.01). These geochemical signatures, along with Sr-Nd-Hf isotopic compositions, reveal that the alkaline complex was derived from the partial melting of enriched lithospheric mantle which contained phlogopite, horblende and garnet. Combined with the previous research, it is suggested that the formation of the Hekanzi alkaline complex from Lingyuan, West Liaoning, is related to the closure of paleo-Asian Ocean, and the Early Mesozoic alkali-rich magmatism is the result of as the nospheric upwelling, following the thinning of mantle lithosphere.
- alkaline complex /
- petrogenesis /
- Hekanzi /
- Lingyuan /
- North China carton /
- Early Mesozic /
- petrology /
- tectonics

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图 1 华北克拉通地质简图（a）和辽西凌源河坎子碱性杂岩体地质简图（b）

图a底图据牛晓露等（2016）修改；图b据1:5万石岭子幅地质图修改

Fig. 1. Geological sketch of the North China carton (a) and geological sketch map of the Hekanzi alkaline complex from Lingyuan, West Liaoning (b)

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图 2 河坎子碱性杂岩的野外照片和显微镜下照片

a~b.花岗斑岩野外及显微镜下照片；c~d. 辉石正长岩野外及显微镜下照片；Pl. 斜长石；Cpx. 单斜辉石；Bi. 黑云母；Am. 角闪石；Pth. 条纹长石；Or. 钾长石

Fig. 2. Field photos and photomicrographs of the Hekanzi alkaline complex

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图 3 辽西凌源河坎子碱性杂岩体岩石锆石CL图像

Fig. 3. CL images of zircon from the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 4 辽西凌源河坎子碱性杂岩体岩石锆石U-Pb年龄谐和图

Fig. 4. U-Pb Zircon concordia diagrams from the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 5 辽西凌源河坎子杂岩体岩石化学分类图解

a. TAS图解（底图据Middlemost，1994）；b. A.R.-SiO₂图解（底图据Wright，1969）；c. SiO₂-K₂O图解（底图据Peccerillo et al., 1976）；d. A/CNK-A/NK图解（底图据Maniar et al., 1989）. A.R.（碱度率）=[w（Al₂O₃）+w（CaO）+w（Na₂O）+w（K₂O）]/{w（Al₂O₃）+w（CaO）-[w（Na₂O）+w（K₂O）]}

Fig. 5. Chemical classification of the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 6 辽西凌源河坎子碱性杂岩体球粒陨石标准化稀土元素配分曲线（a）与原始地幔标准化微量元素蛛网图（b）

球粒陨石与原始地幔标准化值据Sun and McDonough（1989）

Fig. 6. Chondrite-normalized REE patterns and primitive mantle-normalized spider diagram of the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 7 辽西凌源河坎子碱性杂岩体锆石ε_Hf(t)-t图解

底图据贾宏翔等（2020）. DM.亏损地幔；CHUM.球粒陨石均一源储；CC.大陆地壳

Fig. 7. Zircon ε_Hf(t)-t diagram of the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 8 辽西凌源河坎子碱性杂岩体Harker图解

Fig. 8. Harker diagrams of the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 9 辽西凌源河坎子碱性杂岩体的Nb/Yb-Th/Yb（a）、(⁸⁷Sr/⁸⁶Sr)_i-ε_Nd(t)（b）、La-La/Sm（c）、La/Sm-Ba/Th（d）图解

图a底图据夏明哲等（2010）；图b中，姚家各庄数据陈斌等（2013），光头山数据韩宝福等（2004），孙各庄、黄河少数据、凉城数据、东城数据、矾山数据阎国翰等（2000），包头数据牛晓露等（2016）；图d底图据夏明哲等（2010）.DM.亏损地幔；HIMU.高U/Pb比值地幔；PM.原始地幔；OIB.洋岛玄武岩

Fig. 9. Nb/Yb vs. Th/Yb (a), (⁸⁷Sr/⁸⁶Sr)_i vs. ε_Nd(t) (b), La vs. La/Sm (c) and La/Sm vs. Ba/Th (d) diagrams of the Hekanzi alkaline complex in Lingyuan, West Liaoning

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图 10 辽西凌源河坎子碱性杂岩体的SiO₂-(⁸⁷Sr/⁸⁶Sr)_i（a）和(La/Nb)_PM-(Th/Ta)_PM（b）图解（底图据夏明哲等，2010）

Fig. 10. SiO₂ vs. (⁸⁷Sr/⁸⁶Sr)_i (a) and (La/Nb)_PM vs. (Th/Ta)_PM (b) diagrams of the Hekanzi alkaline complex in Lingyuan, West Liaoning (after Xia et al., 2010)

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表 1 辽西凌源河坎子碱性杂岩体岩石锆石U-Pb同位素年龄结果

Table 1. Zircon U-Pb dating results of the Hekanzi alkaline complex in Lingyuan, West Liaoning

点号	Pb	Th	U	Th/U	同位素比值						年龄(Ma)
点号	（10^-6）			Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
B32-1
3	108	396.9	596.1	0.67	0.050 8	0.000 6	0.251 5	0.005 4	0.035 9	0.000 7	227.8	4.5	227.5	4.1
6	61	222.1	352.0	0.63	0.050 8	0.000 7	0.252 3	0.005 0	0.036 0	0.000 5	228.5	4.1	228.0	3.2
7	68	246.8	368.2	0.67	0.050 8	0.000 8	0.251 6	0.004 6	0.035 9	0.000 4	227.8	3.8	227.3	2.7
8	57.5	207.8	320.8	0.65	0.050 9	0.000 8	0.252 0	0.005 0	0.035 9	0.000 5	228.2	4.1	227.3	2.9
9	89	320.6	486.7	0.66	0.050 8	0.000 7	0.252 0	0.005 3	0.035 9	0.000 5	228.2	4.4	227.6	3.4
10	79	281.4	397.8	0.71	0.050 8	0.000 9	0.251 8	0.005 5	0.036 0	0.000 5	228.0	4.5	227.8	3.2
11	290	1 110.4	917.3	1.21	0.051 8	0.000 7	0.256 5	0.004 9	0.035 9	0.000 5	231.9	4.1	227.3	2.9
12	176	659.6	807.8	0.82	0.050 6	0.000 7	0.249 4	0.004 5	0.035 7	0.000 4	226.1	3.7	226.4	2.7
14	125	462.1	565.4	0.82	0.050 6	0.000 7	0.251 0	0.006 3	0.035 9	0.000 8	227.4	5.2	227.7	4.8
15	90	320.6	461.3	0.70	0.051 0	0.000 8	0.253 6	0.006 0	0.036 0	0.000 7	229.5	4.9	228.3	4.4
17	143	555.0	547.5	1.01	0.050 7	0.000 7	0.250 5	0.005 4	0.035 8	0.000 7	227.0	4.5	226.9	4.5
19	98	362.5	513.2	0.71	0.050 6	0.000 7	0.250 7	0.004 5	0.035 9	0.000 4	227.1	3.7	227.5	2.8
20	101	362.7	455.0	0.80	0.050 6	0.000 8	0.252 3	0.005 6	0.036 1	0.000 6	228.4	4.6	228.8	3.9
21	115	411.8	470.7	0.87	0.051 9	0.001 0	0.258 6	0.005 2	0.036 1	0.000 3	233.5	4.3	228.7	2.2
22	41.1	157.8	177.0	0.89	0.052 3	0.001 2	0.259 0	0.006 0	0.035 9	0.000 6	233.8	4.9	227.4	3.6
23	56.1	202.7	307.9	0.66	0.050 8	0.000 8	0.251 7	0.005 5	0.035 9	0.000 5	228.0	4.6	227.5	3.4
25	161	575.4	694.9	0.83	0.050 9	0.000 7	0.252 9	0.005 1	0.036 0	0.000 6	228.9	4.2	228.2	3.6
27	164	591.9	684.3	0.87	0.050 9	0.000 6	0.252 3	0.008 4	0.035 9	0.001 1	228.4	6.8	227.4	6.8
29	128	465.3	481.4	0.97	0.051 0	0.000 7	0.253 6	0.006 0	0.036 0	0.000 7	229.5	4.9	228.2	4.3
30	188	671.1	760.8	0.88	0.051 9	0.001 1	0.256 0	0.010 4	0.035 8	0.001 0	231.4	8.5	226.4	6.2
B32-2
1	82	310.7	178.7	1.74	0.050 9	0.001 1	0.252 2	0.007 3	0.035 9	0.000 8	228.3	6.0	227.3	4.9
2	62	230.0	244.2	0.94	0.050 6	0.000 8	0.250 0	0.005 0	0.035 8	0.000 4	226.6	4.1	226.8	2.7
3	74	288.5	160.5	1.80	0.050 7	0.001 1	0.249 3	0.005 9	0.035 7	0.000 4	226.0	4.8	225.8	2.7
4	85	329.8	197.3	1.67	0.050 7	0.000 9	0.248 3	0.005 1	0.035 5	0.000 4	225.2	4.2	224.9	2.9
5	72	277.9	170.6	1.63	0.050 4	0.001 1	0.248 0	0.005 5	0.035 7	0.000 4	224.9	4.6	225.9	2.8
6	48.5	185.7	164.1	1.13	0.050 7	0.001 0	0.248 2	0.005 4	0.035 5	0.000 6	225.1	4.5	225.0	3.6
7	32.4	125.8	88.1	1.43	0.051 1	0.001 6	0.251 1	0.007 7	0.035 6	0.000 6	227.4	6.3	225.8	3.7
8	32.4	121.9	107.8	1.13	0.051 7	0.001 5	0.253 0	0.007 6	0.035 5	0.000 7	229.0	6.2	224.8	4.2
9	55	209.1	151.9	1.38	0.051 3	0.001 4	0.251 3	0.007 3	0.035 6	0.000 5	227.6	5.9	225.2	3.4
10	35.3	133.0	128.6	1.03	0.050 7	0.001 3	0.248 8	0.007 7	0.035 6	0.000 6	225.6	6.3	225.3	3.5
11	59	224.5	128.2	1.75	0.051 5	0.001 2	0.253 1	0.007 3	0.035 6	0.000 7	229.1	6.0	225.6	4.6
12	90	344.0	204.0	1.69	0.050 9	0.000 9	0.249 4	0.006 0	0.035 6	0.000 6	226.1	5.0	225.2	3.8
13	31.9	119.9	103.3	1.16	0.050 8	0.001 3	0.248 9	0.007 2	0.035 5	0.000 5	225.7	5.9	225.0	3.2
14	48.3	185.3	121.0	1.53	0.051 7	0.001 2	0.252 8	0.005 8	0.035 4	0.000 6	228.8	4.8	224.5	3.9
15	69	269.3	167.7	1.61	0.051 1	0.001 0	0.250 3	0.006 1	0.035 5	0.000 5	226.8	5.0	224.8	3.1
16	58	220.0	229.0	0.96	0.050 6	0.000 9	0.248 7	0.005 0	0.035 7	0.000 5	225.5	4.2	225.9	3.0
17	60	220.9	221.4	1.00	0.051 6	0.001 1	0.253 9	0.005 7	0.035 7	0.000 5	229.7	4.7	225.9	3.0
18	65	231.2	200.5	1.15	0.051 5	0.001 1	0.257 4	0.005 2	0.036 3	0.000 4	232.6	4.3	229.5	2.6
19	89	328.5	349.0	0.94	0.050 8	0.000 8	0.249 0	0.004 5	0.035 5	0.000 4	225.8	3.8	225.2	2.5
21	107	392.1	401.8	0.98	0.051 1	0.000 7	0.251 1	0.005 9	0.035 6	0.000 8	227.5	4.8	225.8	5.2
22	55.1	206.0	158.1	1.30	0.051 4	0.001 0	0.251 9	0.007 9	0.035 5	0.000 8	228.1	6.5	225.0	5.2
23	60	220.8	205.2	1.08	0.051 2	0.001 1	0.251 4	0.006 3	0.035 6	0.000 6	227.7	5.2	225.3	3.6
24	159	589.6	322.8	1.83	0.052 0	0.000 8	0.257 0	0.005 9	0.035 9	0.000 6	232.2	4.9	227.1	3.7
25	105	388.8	247.3	1.57	0.051 1	0.001 0	0.252 2	0.007 1	0.035 8	0.000 8	228.4	5.8	226.6	4.8
26	106	403.3	264.9	1.52	0.050 8	0.000 9	0.249 4	0.005 5	0.035 6	0.000 5	226.1	4.5	225.5	3.5
28	92	356.8	242.2	1.47	0.050 8	0.000 8	0.248 7	0.004 4	0.035 5	0.000 4	225.5	3.6	224.9	2.3
29	100	380.7	238.1	1.60	0.051 5	0.001 1	0.253 3	0.005 7	0.035 7	0.000 7	229.2	4.7	226.0	4.4
30	186	702.6	548.0	1.28	0.050 9	0.000 7	0.250 1	0.005 2	0.035 7	0.000 7	226.6	4.3	225.9	4.1

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表 2 辽西凌源河坎子碱性杂岩体岩石主量（%）、微量和稀土元素（10^-6）含量

Table 2. Major elements (%), trace elements and REE (10^-6) of the Hekanzi alkaline complex in Lingyuan, West Liaoning

样品号	B32-1	B32-2	B33-1	B33-2	B34	B35	B36	B37	B38-1	B38-2	B39-1	B39-2	B310-1	B310-2
SiO₂	70.66	50.99	70.15	56.54	54.32	53.90	70.87	70.34	71.70	57.22	70.41	57.82	66.83	54.00
Al₂O₃	15.04	14.51	15.09	16.24	18.45	18.31	14.50	15.14	14.69	16.55	15.36	19.40	15.79	16.97
Fe₂O₃	1.98	6.85	1.43	3.65	2.48	3.29	2.14	1.99	2.02	3.69	1.34	2.12	2.30	3.89
FeO	0.47	3.49	0.92	3.15	3.38	2.89	0.37	0.24	0.31	2.50	0.12	2.48	1.08	3.22
CaO	0.75	6.30	0.72	4.77	4.30	4.60	1.16	0.94	0.67	4.18	0.78	2.69	1.35	5.05
MgO	0.20	5.42	0.57	3.20	2.15	2.37	0.37	0.18	0.33	2.78	0.18	1.15	0.95	3.62
K₂O	4.60	4.41	4.88	4.77	7.26	7.65	4.70	5.20	4.68	5.47	5.37	7.64	4.54	5.63
Na₂O	4.71	3.54	4.87	4.73	4.52	3.80	4.15	3.82	3.95	4.72	5.10	4.30	5.32	4.13
P₂O₅	0.15	0.98	0.15	0.71	0.58	0.62	0.12	0.14	0.14	0.61	0.15	0.36	0.25	0.73
TiO₂	0.31	1.30	0.33	0.99	0.75	0.79	0.31	0.30	0.30	0.92	0.35	0.51	0.52	0.94
MnO	0.016	0.15	0.018	0.11	0.12	0.12	0.012	0.025	0.029	0.11	0.027	0.10	0.033	0.12
LOI	0.80	1.66	0.74	0.75	1.22	1.35	0.82	1.01	1.09	0.69	0.49	1.21	0.85	1.06
∑	99.68	99.58	99.88	99.62	99.51	99.68	99.52	99.32	99.91	99.44	99.69	99.78	99.82	99.37
K₂O+ Na₂O	9.31	7.95	9.76	9.51	11.77	11.45	8.85	9.03	8.62	10.19	10.47	11.95	9.86	9.76
K₂O /Na₂O	0.98	1.25	1.00	1.01	1.61	2.01	1.13	1.36	1.18	1.16	1.05	1.78	0.85	1.36
A/CNK	1.07	0.66	1.03	0.75	0.80	0.80	1.03	1.11	1.15	0.78	0.98	0.96	0.98	0.77
A/NK	1.18	1.37	1.13	1.25	1.21	1.26	1.22	1.27	1.27	1.21	1.08	1.26	1.15	1.31
A.R.	3.87	2.24	4.22	2.65	3.15	3.00	3.60	3.56	3.56	2.93	4.69	3.36	3.71	2.59
Li	6.30	18.9	7.71	15.3	19.1	15.6	4.94	6.73	11.5	8.56	4.49	40.2	8.31	13.2
Be	2.79	2.55	2.67	4.30	5.96	3.81	2.93	1.96	1.98	4.04	3.14	5.28	2.77	2.41
Rb	108	115	99.9	125	199	212	99.9	121	117	148	139	190	125	111
Sr	773	1 900	838	2 100	2 300	2 800	933	729	683	2 000	401	2 000	949	2 700
Ba	1 500	2 000	1 500	1 800	2 000	2 100	3 000	1 800	1 600	1 800	1 400	1 500	1 500	2 400
Zr	151	233	142	444	346	281	110	119	112	504	193	336	189	36.4
Hf	4.35	5.25	5.35	13.1	9.09	8.26	5.54	3.70	4.38	11.9	6.14	23.4	5.96	3.70
Nb	20.9	14.3	20.7	23.3	21.1	16.2	19.1	12.5	13.6	26.6	28.2	22.7	22.1	8.76
Ta	1.95	0.89	3.18	2.08	1.77	1.39	2.12	1.13	1.04	1.75	3.12	1.53	2.20	0.64
Th	11.2	5.44	10.5	13.1	14.0	9.62	21.1	7.47	5.18	8.03	14.3	13.1	15.0	5.89
U	2.18	1.34	2.10	3.11	4.35	2.85	3.99	1.08	1.45	1.69	10.1	3.04	3.45	0.81
La	37.5	62.5	44.3	82.6	68.2	67.8	37.4	28.9	30.2	78.9	47.9	63.9	52.5	65.3
Ce	56.5	118	63.9	145	118	120	58.3	47.8	47.1	142	82.6	105	85.3	118
Pr	6.24	15.0	6.79	17.4	14.0	14.7	6.18	5.47	5.81	16.6	8.84	11.9	9.53	14.6
Nd	20.5	57.3	22.5	63.4	52.2	54.3	20.3	19.4	20.1	60.0	29.4	41.0	32.4	55.5
Sm	2.91	9.54	3.28	9.40	8.43	8.82	3.02	2.76	3.02	9.26	4.19	6.35	4.61	9.08
Eu	1.47	3.21	1.53	3.56	3.20	3.62	2.33	1.69	1.60	3.15	1.72	2.41	1.93	3.88
Gd	2.07	6.74	2.45	7.27	6.13	6.43	2.01	1.78	1.97	7.07	3.09	4.76	3.55	6.64
Tb	0.32	0.97	0.34	0.98	0.90	0.93	0.31	0.29	0.29	0.93	0.45	0.69	0.47	0.91
Dy	1.24	4.19	1.39	4.18	4.13	4.13	1.20	1.05	1.14	3.96	1.95	2.96	1.96	3.80
Ho	0.26	0.74	0.28	0.78	0.77	0.78	0.25	0.20	0.22	0.67	0.37	0.55	0.36	0.65
Er	0.68	1.94	0.80	2.07	2.01	2.03	0.69	0.49	0.59	1.84	1.02	1.49	0.98	1.69
Tm	0.15	0.30	0.15	0.30	0.31	0.30	0.14	0.11	0.13	0.27	0.19	0.23	0.19	0.24
Yb	0.78	1.74	0.86	1.96	2.06	2.03	0.81	0.54	0.59	1.69	1.10	1.53	0.98	1.37
Lu	0.12	0.24	0.15	0.26	0.28	0.28	0.12	0.083	0.097	0.24	0.17	0.22	0.15	0.19
Y	5.76	17.8	7.91	19.4	19.1	19.4	8.39	4.38	4.83	16.7	8.91	14.6	9.50	17.5
Ni	3.89	75.3	5.13	30.7	14.5	11.6	5.30	6.43	7.76	39.4	2.56	5.07	16.8	39.6
Co	7.02	31.6	8.91	21.6	16.6	12.8	4.99	5.07	5.69	19.0	4.19	8.90	6.54	21.5
V	22.4	122	25.4	82.6	68.4	74.9	25.4	23.7	27.9	72.1	26.5	40.7	39.6	84.3
Sc	2.95	19.4	3.10	11.8	8.74	6.73	2.79	3.28	3.30	9.97	2.97	4.89	4.80	11.5
Cr	13.9	105	13.6	35.9	18.5	23.0	12.8	17.8	16.1	36.5	10.0	7.23	24.8	41.4
Ga	15.4	19.4	15.2	19.5	18.8	18.6	15.7	16.2	15.6	19.9	16.9	18.8	18.1	16.9
∑REE	130.73	282.51	148.65	339.29	280.95	285.85	133.00	110.45	112.92	326.59	183.06	243.02	194.78	281.54
LREE	125.11	265.65	142.24	321.50	264.36	268.96	127.47	105.91	107.90	309.92	174.71	230.59	186.15	266.05
HREE	5.62	16.85	6.41	17.79	16.58	16.89	5.53	4.54	5.02	16.67	8.35	12.43	8.64	15.50
LREE/HREE	22.26	15.76	22.19	18.07	15.94	15.92	23.06	23.31	21.51	18.59	20.93	18.56	21.55	17.17
(La/Yb)_N	34.46	25.73	37.10	30.21	23.76	23.95	33.24	38.65	36.49	33.57	31.20	30.07	38.37	34.20
δEu	1.74	1.16	1.58	1.27	1.30	1.40	2.72	2.18	1.89	1.15	1.40	1.29	1.40	1.46
Nb/La	0.56	0.23	0.47	0.28	0.31	0.24	0.51	0.43	0.45	0.34	0.59	0.36	0.42	0.13
Rb/Sr	0.14	0.06	0.12	0.06	0.09	0.08	0.11	0.17	0.17	0.07	0.35	0.09	0.13	0.04
Ba/Rb	13.88	17.43	15.02	14.40	10.03	9.92	30.02	14.89	13.69	12.13	10.09	7.90	11.98	21.65
Dy/Yb	1.59	2.41	1.62	2.13	2.00	2.03	1.49	1.97	1.91	2.35	1.77	1.94	2.00	2.77

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表 3 辽西凌源河坎子碱性杂岩体Sr-Nd同位素组成

Table 3. Sr-Nd isotope compositions of the Hekanzi alkaline complex in Lingyuan, West Liaoning

样品号	B32-1	B32-2	B33-2	B34	B36	B38-2	B39-1	B310-1
Rb(10^-6)	108	115	125	199	99.9	148	139	125
Sr(10^-6)	773	1 900	2 100	2 300	933	2 000	401	949
⁸⁷Rb/⁸⁶Sr	0.395 077	0.170 617	0.168 168	0.244 900	0.302 374	0.209 652	0.976 521	0.372 638
⁸⁷Sr/⁸⁶Sr	0.705 717	0.705 184	0.705 135	0.705 600	0.705 313	0.705 081	0.707 933	0.705 704
2σ	0.000 015	0.000 018	0.000 023	0.000 014	0.000 020	0.000 016	0.000 016	0.000 011
(⁸⁷Sr/⁸⁶Sr)_i	0.703 86	0.704 38	0.704 34	0.704 45	0.703 89	0.704 09	0.703 34	0.703 95
Sm(10^-6)	2.91	9.54	9.40	8.43	3.02	9.26	4.19	4.61
Nd(10^-6)	20.5	57.3	63.4	52.2	20.3	60.0	29.4	32.4
¹⁴⁷Sm/¹⁴⁴Nd	0.089 145	0.104 566	0.093 184	0.101 450	0.093 595	0.096 939	0.089 353	0.089 633
¹⁴³Nd /¹⁴⁴Nd	0.512 126	0.512 160	0.512 171	0.512 173	0.512 059	0.512 171	0.512 117	0.512 081
2σ	0.000 082	0.000 015	0.000 009	0.000 008	0.000 010	0.000 008	0.000 007	0.000 009
ε_Nd(t)	-5.5	-5.4	-4.7	-5.1	-6.9	-4.9	-5.6	-6.4
f_Sm/Nd	-0.55	-0.47	-0.53	-0.48	-0.52	-0.51	-0.55	-0.54
t_DM (Ma)	1 254	1 383	1 239	1 327	1 385	1 279	1 267	1 314

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表 4 辽西凌源河坎子碱性杂岩体锆石Hf同位素结果

Table 4. Results of zircon Hf isotope of the Hekanzi alkaline complex in Lingyuan, West Liaoning

样品点号	年龄(Ma)	¹⁷⁶Yb/¹⁷⁷Hf	2σ	¹⁷⁶Lu/¹⁷⁷Hf	2 σ	¹⁷⁶Hf /¹⁷⁷Hf	2 σ	ε_Hf(t)	T_DM1(Ma)	T_DM2(Ma)	f_Lu/Hf
B32-1-1	227.70	0.030 795	0.000 463	0.001 150	0.000 019	0.282 558	0.000 015	-2.60	980	1 273	-0.97
B32-1-2	227.70	0.026 966	0.000 287	0.000 996	0.000 008	0.282 537	0.000 017	-3.35	1007	1 314	-0.97
B32-1-3	227.70	0.026 909	0.000 855	0.000 898	0.000 025	0.282 538	0.000 014	-3.30	1003	1 312	-0.97
B32-1-4	227.70	0.023 510	0.000 246	0.000 981	0.000 019	0.282 533	0.000 017	-3.46	1011	1 321	-0.97
B32-1-5	227.70	0.028 924	0.000 723	0.001 036	0.000 024	0.282 543	0.000 016	-3.12	998	1 302	-0.97
B32-1-6	227.70	0.026 910	0.000 227	0.001 038	0.000 007	0.282 514	0.000 014	-4.15	1039	1 359	-0.97
B32-1-7	227.70	0.033 159	0.000 641	0.001 267	0.000 017	0.282 511	0.000 014	-4.32	1051	1 368	-0.96
B32-1-8	227.70	0.028 283	0.000 731	0.000 948	0.000 022	0.282 542	0.000 016	-3.15	998	1 304	-0.97
B32-1-9	227.70	0.037 332	0.000 489	0.001 304	0.000 015	0.282 514	0.000 016	-4.19	1047	1 361	-0.96
B32-1-10	227.70	0.026 941	0.000 509	0.001 075	0.000 024	0.282 585	0.000 013	-1.65	941	1 221	-0.97
B32-2-1	225.80	0.024 719	0.000 145	0.000 811	0.000 000	0.282 621	0.000 017	-0.36	883	1 147	-0.98
B32-2-2	225.80	0.012 170	0.000 030	0.000 436	0.000 002	0.282 632	0.000 014	0.07	860	1 123	-0.99
B32-2-3	225.80	0.020 823	0.000 050	0.000 672	0.000 002	0.282 611	0.000 017	-0.72	895	1 167	-0.98
B32-2-4	225.80	0.013 125	0.000 024	0.000 451	0.000 002	0.282 627	0.000 014	-0.13	868	1 135	-0.99
B32-2-5	225.80	0.015 035	0.000 139	0.000 491	0.000 002	0.282 615	0.000 013	-0.54	885	1 157	-0.99
B32-2-6	225.80	0.012 622	0.000 025	0.000 441	0.000 001	0.282 626	0.000 016	-0.14	868	1 135	-0.99
B32-2-7	225.80	0.020 312	0.000 203	0.000 647	0.000 004	0.282 603	0.000 012	-1.01	906	1 183	-0.98
B32-2-8	225.80	0.019 758	0.000 109	0.000 635	0.000 000	0.282 627	0.000 015	-0.16	872	1 136	-0.98
B32-2-9	225.80	0.021 723	0.000 039	0.000 691	0.000 002	0.282 638	0.000 016	0.25	857	1 114	-0.98
B32-2-10	225.80	0.014 440	0.000 064	0.000 483	0.000 000	0.282 630	0.000 015	-0.01	864	1 128	-0.99

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