东天山雅满苏组火山岩LA-ICP-MS锆石U-Pb定年及其地质意义

罗婷; 廖群安; 陈继平; 张雄华; 郭东宝; 胡兆初

doi:10.3799/dqkx.2012.141

东天山雅满苏组火山岩LA-ICP-MS锆石U-Pb定年及其地质意义

doi: 10.3799/dqkx.2012.141

1.
中国地质大学地球科学学院, 湖北武汉 430074
2.
甘肃省有色金属地质勘查局兰州矿产勘查院, 甘肃兰州 730000
3.
中国地质大学地质过程与矿产资源国家重点实验室, 湖北武汉 430074

基金项目:

中国地质调查局地质调查工作项目 1212011085469

详细信息

作者简介:
罗婷(1987-), 女, 在读硕士, 主要从事岩浆岩研究.E-mail: 179175768@qq.com

通讯作者:
廖群安, E-mail: qanliao@cug.edu.cn

中图分类号: P588.14
计量
- 文章访问数: 205
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- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2012-07-19
- 网络出版日期: 2021-11-09
- 刊出日期: 2012-06-15

LA-ICP-MS Zircon U-Pb Dating of the Volcanic Rocks from Yamansu Formation in the Eastern Tianshan, and Its Geological Significance

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Gansu Non-Ferrous Metal Geological Exploration Bureau, Lanzhou 730000, China
3.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 报道了东天山觉罗塔格构造带中雅满苏组火山岩的地球化学特征和年代学结果,通过岩石学、同位素年代学及地球化学研究显示: (1)雅满苏组火山岩由玄武岩、安山岩、英安岩、流纹岩以及火山碎屑岩组成,以钙碱性系列为主.火山岩地球化学特征及捕获锆石年龄指示雅满苏组火山岩形成于具有古老基底的陆源弧环境; (2)东天山觉罗塔格构造带雅满苏组火山岩LA-ICP-MS锆石U-Pb谐和年龄为东段348.0±1.7 Ma(MSWD=1.15)、中段335.9±2.4 Ma(MSWD=1.03)、西段334.0±2.5 Ma (MSWD=1.02),雅满苏组火山岩整体形成于早石炭世,但东段形成时间早于西段; (3)东天山雅满苏岛弧带形成时期东段早于中段和西段,东天山石炭纪时的俯冲事件可能是由东部先开始,依次到中部、西部,俯冲形式类似于"剪刀"闭合的过程.
- 觉罗塔格 /
- 雅满苏组 /
- 锆石U-Pb年龄 /
- "剪刀"式闭合 /
- 地球化学 /
- 岩石学.
Abstract: This paper presents the geochemical characteristics and isotope chronology of volcanics from Yamansu Formation,occurring in Jueluotage tectonic belt in the eastern Tianshan of China. Petrological,isotope chronology and geochemical features of these volcanic rocks show that: (1) Yamansu Formation is composed of basite-mesite-acidic volcanic rock,pyroclastic rocks and pyroclastic sedimentary rocks. And it is mainly of calc-alkaline series. The geochemical characteristics demonstrated and inherited zircon age suggests that Yamansu volcanic rocks were formed at arc settings with continental basement. (2) In situ zircon U-Pb LA-ICP-MS dating on the zircon of Yamansu Formation yielded an age of 348.0±1.7 Ma (MSWD=1.15) in the eastern section,335.9±2.4 Ma(MSWD=1.03)in the middle and 334.0±2.5 Ma (MSWD=1.02) in the western section,which stands for volcanic age. (3)The magmatic activity started from the east and then developed to the middle and western sections,like the close of scissors.
- Jueluotage tectonic belt /
- Yamansu Formation /
- zircon U-Pb dating /
- close of "scissors" /
- geochemistry /
- petrology.

HTML全文

图 1 东天山及邻区大地构造图(据冯益民等，2002)

①隐伏断裂；②康古尔塔格-黄山断裂；③雅满苏断裂；④阿奇克库都克断裂；⑤星星峡断裂；⑥中天山南缘断裂

Fig. 1. Tectonic map of the southern East Tianshan and its adjacent areas

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图 2 东天山石炭纪火山岩分布简图

(据新疆东天山1∶25万区域地质调查图改编)
1.C₁y雅满苏组；2.C₁g干墩组；3.C₂qs脐山组；4.C₂d底坎儿组；5.C₂w梧桐窝子组；6.C₂tg土古土布拉克组；7.断裂；8.采样点

Fig. 2. Simplified map of volcanic rocks in the East Tianshan

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图 3 雅满苏组火山岩显微照片

a.玄武岩中绿脱石与绿泥石充填杏仁体(+)；b.辉石安山岩中单斜辉石(+)；c.英安岩中斜长石斑晶(+)；d.岩屑凝灰岩中安山质岩屑(+)；Pl.斜长石；Non.绿脱石；Chl.绿泥石；Px.辉石；Cpx.单斜辉石；Qz.石英

Fig. 3. Petrographic characteristics of the Carboniferous volcanic rocks from Yamansu Formation

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图 4 东天山雅满苏组火山岩锆石阴极发光(CL)照片

a.SQ1-1东段英安岩；b.1050-1中段英安岩；c.HJS1-1西段流纹岩

Fig. 4. CL images of zircon for volcanic rocks from Yamansu Formation in eastern Tianshan

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图 5 东天山雅满苏组火山岩锆石U-Pb同位素年龄谐和图及加权平均年龄图

a.SQ1-1东段英安岩；b.1050-1中段英安岩；c.HJS1-1西段流纹岩

Fig. 5. LA-ICP-MS U-Pb zircon concordia diagram and weighted mean age for volcanic rocks from Yamansu Formation in eastern Tianshan

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图 6 东天山雅满苏组火山岩捕获锆石(L01)阴极发光(CL)照片(a)及U-Pb同位素年龄谐和图解(b)

Fig. 6. CL images (a) and LA-ICP-MS U-Pb zircon age concordia diagram (b) for inherited zircon L01 from Yamansu Formation volcanic rocks in eastern Tianshan

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图 7 东天山雅满苏组火山岩Nb/Y-SiO₂图解(a)和AFM图解(b)

Fig. 7. Nb/Y-SiO₂ diagram (a) and AFM diagram (b) for volcanic rocks of Yamansu Formation from eastern Tianshan

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图 8 雅满苏组火山岩微量元素N-MORB标准化配分图解(a, b, c)及稀土元素球粒陨石标准化配分图解(a₁, b₁, c₁)(N-MORB值据Sun and McDonough, 1989；球粒陨石值据Boynton，1984)

a, a₁.玄武质岩；b, b₁.安山岩；c, c₁.英安岩

Fig. 8. N-MORB-normalized Trace Elements patterns (a, b, c) and Chondrite-normalized REE patterns (a₁, b₁, c₁) for the Yamansu volcanic rocks from eastern Tianshan

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图 9 La/Zr-Nb/Zr(a)和Th-Hf/3-Nb/16(b)构造环境判别图解(图 9a底图据武莉娜等，2003改编；图 9b据Wood, 1979)

A.大陆板内玄武岩(陆-陆碰撞带)；B.板块汇聚边缘玄武岩；C.大陆板内玄武岩(裂谷、拉张区)；D.地幔热柱玄武岩；E.大洋板内玄武岩；F.大洋板块发散边缘玄武岩; G.洋中脊玄武岩；H.富集型洋中脊玄武岩和板内碱性玄武岩；I.板内碱性玄武岩；J.火山弧玄武岩

Fig. 9. La/Zr-Nb/Zr (a) and Th-Hf/3-Nb/16 (b) identification diagram for the Carboniferous basalts from Yamansu Formation

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表 1 东天山雅满苏组火山岩锆石LA-ICP-MS U-Th-Pb同位素分析结果

Table 1. LA-ICP-MS U-Th-Pb isotopic data of zircon from Yamansu Formation

测点号	元素含量(×10^-6)			元素比值	同位素比值					同位素年龄(Ma)
测点号	^TotalPb	²³²Th	²³⁸U	Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ
SQ1-01	23.30	315.0	319.0	0.99	0.052 6	0.000 8	0.401 1	0.006 9	0.055 0	0.000 3	342	5	345	2
SQ1-02	21.38	201.0	317.0	0.63	0.056 0	0.001 4	0.427 7	0.010 1	0.055 5	0.000 4	362	7	348	3
SQ1-03	10.53	70.2	153.0	0.46	0.057 9	0.001 4	0.427 9	0.010 5	0.055 2	0.000 7	362	7	346	4
SQ1-04	15.19	122.0	216.0	0.57	0.068 9	0.001 5	0.513 9	0.011 3	0.055 2	0.000 6	421	8	346	4
SQ1-05	13.82	130.0	198.0	0.66	0.056 7	0.001 3	0.428 1	0.009 7	0.055 3	0.000 4	362	7	347	2
SQ1-06	14.67	125.0	208.0	0.60	0.065 9	0.001 7	0.471 2	0.012 2	0.055 8	0.001 5	392	8	350	9
SQ1-07	11.09	102.0	156.0	0.65	0.062 0	0.001 6	0.480 2	0.011 9	0.056 1	0.000 4	398	8	352	2
SQ1-08	5.61	47.3	85.4	0.55	0.056 6	0.001 8	0.423 9	0.013 3	0.054 2	0.000 5	359	9	340	3
SQ1-09	7.54	64.6	110.0	0.59	0.055 0	0.001 4	0.427 4	0.010 9	0.055 8	0.000 5	361	8	350	3
SQ1-10	16.57	171.0	227.0	0.76	0.058 5	0.001 6	0.424 9	0.011 4	0.055 8	0.001 3	360	8	350	8
SQ1-11	20.31	222.0	300.0	0.74	0.052 1	0.001 2	0.406 8	0.011 5	0.055 4	0.000 5	347	8	347	3
SQ1-12	5.16	45.5	68.6	0.66	0.057 9	0.002 1	0.420 2	0.015 9	0.055 6	0.001 1	356	11	349	7
SQ1-13	9.84	85.2	133.0	0.64	0.063 5	0.002 0	0.461 3	0.015 1	0.055 6	0.001 2	385	10	349	7
SQ1-14	40.20	405.0	509.0	0.79	0.053 3	0.003 4	0.422 2	0.026 1	0.057 4	0.001 1	358	19	360	7
SQ1-15	40.40	324.0	519.0	0.62	0.065 2	0.004 3	0.501 7	0.031 3	0.056 3	0.001 0	413	21	353	6
SQ1-16	42.10	403.0	550.0	0.73	0.051 6	0.003 3	0.395 4	0.025 0	0.056 7	0.001 3	338	18	356	8
SQ1-17	55.10	498.0	705.0	0.71	0.053 6	0.003 0	0.420 7	0.022 6	0.056 5	0.000 9	357	16	355	6
SQ1-18	47.90	466.0	607.0	0.77	0.054 1	0.003 0	0.412 2	0.022 8	0.054 8	0.001 0	350	16	344	6
SQ1-19	52.40	602.0	630.0	0.96	0.052 0	0.003 3	0.400 3	0.025 1	0.055 8	0.000 9	342	18	350	5
SQ1-20	70.50	838.0	803.0	1.04	0.058 5	0.002 9	0.460 8	0.023 0	0.056 8	0.000 9	385	16	356	5
SQ1-21	33.00	182.0	442.0	0.41	0.060 2	0.004 3	0.458 1	0.029 5	0.056 6	0.001 1	383	21	355	7
SQ1-22	29.50	274.0	382.0	0.72	0.057 3	0.004 4	0.430 7	0.030 9	0.056 5	0.001 2	364	22	354	7
HJS1-01	6.00	42.8	84.2	0.51	0.094 8	0.002 8	0.716 1	0.025 1	0.054 4	0.000 6	548	15	341	4
HJS1-02	8.90	102.8	130.0	0.79	0.064 3	0.002 5	0.452 8	0.015 0	0.052 7	0.000 8	379	10	331	5
HJS1-03	4.80	47.1	75.4	0.62	0.071 7	0.003 0	0.487 9	0.023 0	0.051 9	0.002 8	404	16	326	17
HJS1-04	6.30	69.7	79.7	0.87	0.072 5	0.002 8	0.511 3	0.020 6	0.054 1	0.000 9	419	14	340	5
HJS1-05	6.10	50.4	80.8	0.62	0.110 8	0.003 3	0.789 7	0.025 1	0.053 2	0.000 7	591	14	334	4
HJS1-06	8.90	93.8	104.2	0.90	0.070 9	0.002 3	0.485 9	0.016 3	0.054 3	0.001 4	402	11	341	9
HJS1-07	5.90	64.6	91.9	0.70	0.095 8	0.003 8	0.680 6	0.032 4	0.051 7	0.001 1	527	20	325	6
HJS1-08	11.00	134.4	145.4	0.92	0.055 6	0.001 6	0.392 9	0.011 0	0.053 6	0.000 9	336	8	337	6
HJS1-09	9.70	102.7	121.6	0.85	0.062 4	0.001 8	0.429 6	0.012 0	0.053 7	0.000 9	363	9	337	6
HJS1-10	6.60	64.4	90.3	0.71	0.069 1	0.002 3	0.480 7	0.017 5	0.054 0	0.001 3	399	12	339	8
HJS1-11	5.00	44.3	63.4	0.70	0.125 9	0.003 7	0.927 4	0.028 5	0.053 5	0.000 6	666	15	336	3
HJS1-12	11.30	160.5	157.3	1.02	0.059 0	0.001 8	0.405 5	0.012 5	0.052 4	0.001 0	346	9	329	6
HJS1-13	7.10	65.2	98.6	0.66	0.059 1	0.001 9	0.413 5	0.013 1	0.053 3	0.001 0	351	9	335	6
HJS1-14	6.40	56.2	83.6	0.67	0.090 6	0.005 7	0.631 8	0.038 4	0.051 0	0.001 2	497	24	321	8
HJS1-15	3.50	31.5	50.6	0.62	0.107 9	0.009 8	0.761 0	0.068 9	0.051 0	0.001 5	575	40	321	9
HJS1-16	9.40	104.9	93.6	1.12	0.143 6	0.010 9	1.073 3	0.079 9	0.054 9	0.001 3	740	39	345	8
HJS1-17	3.90	34.0	53.1	0.64	0.127 8	0.014 1	0.885 3	0.106 1	0.051 5	0.001 7	644	57	324	10
HJS1-18	9.60	134.3	117.8	1.14	0.078 7	0.005 9	0.541 3	0.038 2	0.053 1	0.001 3	439	25	334	8
HJS1-19	16.4	271.7	208.3	1.30	0.054 6	0.003 3	0.396 6	0.025 2	0.053 0	0.001 3	339	18	333	8
HJS1-20	16.8	250.5	200.9	1.25	0.056 4	0.003 4	0.403 7	0.024 1	0.051 8	0.001 0	344	17	326	6
HJS1-21	9.9	112.6	137.4	0.82	0.083 9	0.019 6	0.595 3	0.143 4	0.051 6	0.001 4	474	92	324	8
HJS1-22	8.0	106.0	107.7	0.98	0.072 1	0.005 1	0.518 4	0.036 9	0.052 7	0.001 7	424	25	331	10
HJS1-23	5.9	64.7	78.6	0.82	0.075 9	0.006 0	0.537 8	0.042 8	0.051 6	0.001 5	437	28	324	9
1050-01	16.3	142.3	248.7	0.57	0.057 2	0.001 3	0.422 9	0.010 9	0.053 7	0.000 5	358	8	337	3
1050-02	43.4	422.0	574.0	0.74	0.105 9	0.003 7	0.791 6	0.037 0	0.053 0	0.000 6	592	21	333	4
1050-03	126.1	1 603.3	1 956.2	0.82	0.055 5	0.001 0	0.405 5	0.008 0	0.053 0	0.000 4	346	6	333	2
1050-04	19.6	209.3	283.0	0.74	0.056 4	0.001 3	0.421 5	0.011 2	0.054 2	0.000 5	357	8	340	3
1050-05	4.7	48.4	69.4	0.70	0.054 4	0.002 7	0.396 5	0.018 9	0.054 0	0.000 7	339	14	339	4
1050-06	9.7	87.8	147.3	0.60	0.059 5	0.002 1	0.427 4	0.014 8	0.053 8	0.000 7	361	10	338	4
1050-07	6.7	55.0	74.7	0.74	0.064 4	0.003 2	0.455 2	0.022 1	0.054 5	0.000 9	381	15	342	5
1050-08	4.1	21.9	63.1	0.35	0.074 5	0.005 9	0.563 8	0.053 2	0.053 8	0.001 6	454	35	338	10
1050-09	5.6	50.9	72.2	0.70	0.082 6	0.007 5	0.601 1	0.051 7	0.053 7	0.001 5	478	33	337	9
1050-10	13.4	174.3	174.6	1.00	0.055 8	0.003 6	0.386 4	0.022 1	0.051 5	0.002 1	332	16	324	13
1050-11	6.6	40.1	99.8	0.40	0.074 8	0.006 9	0.524 9	0.050 5	0.051 3	0.001 1	428	34	323	7
L01-01	436.9	415.8	698.5	0.60	0.213 0	0.001 4	14.311 3	0.174 2	0.487 0	0.002 9	2771	12	2558	13
L01-02	194.2	410.8	676.5	0.61	0.092 6	0.003 1	3.075 0	0.119 4	0.238 0	0.006 0	1426	30	1376	31
L01-03	146.3	324.4	503.2	0.64	0.092 3	0.000 6	2.966 0	0.039 2	0.232 2	0.001 8	1399	10	1346	10
L01-04	18.0	76.7	48.3	1.59	0.087 7	0.004 5	2.691 8	0.141 1	0.219 8	0.004 1	1326	39	1281	22
L01-05	275.0	125.9	1 582.0	0.08	0.073 9	0.000 7	1.724 1	0.025 5	0.169 0	0.001 1	1018	10	1006	6
L01-06	93.0	136.0	469.3	0.29	0.068 4	0.002 1	1.523 3	0.047 1	0.158 2	0.002 3	940	19	947	13
L01-07	167.6	927.7	859.6	1.08	0.072 3	0.000 9	1.485 8	0.022 9	0.149 0	0.001 0	925	9	896	6
L01-08	623.0	451.6	3 881.4	0.12	0.075 1	0.000 6	1.593 6	0.020 0	0.153 5	0.000 8	968	8	921	4
L01-09	14.3	98.6	102.2	0.96	0.060 3	0.003 6	0.799 3	0.046 5	0.094 4	0.001 9	596	26	582	11
L01-10	23.4	157.6	205.7	0.77	0.060 2	0.002 2	0.750 4	0.027 7	0.090 8	0.000 8	568	16	560	5
L01-11	42.7	168.3	399.3	0.42	0.061 1	0.001 4	0.768 8	0.024 3	0.090 8	0.001 8	579	14	560	11
L01-12	93.4	398.2	850.9	0.47	0.070 5	0.003 5	0.888 7	0.048 4	0.090 9	0.000 6	646	26	561	3
L01-13	25.8	148.3	212.0	0.70	0.057 9	0.002 8	0.720 3	0.034 6	0.089 3	0.002 0	551	20	551	12
L01-14	16.3	57.9	172.2	0.34	0.060 5	0.001 4	0.720 6	0.019 1	0.086 0	0.000 6	551	11	532	4
L01-15	24.5	128.0	220.5	0.58	0.061 1	0.003 0	0.700 1	0.035 7	0.081 2	0.001 8	539	21	503	10
L01-16	55.5	46.5	757.3	0.06	0.057 6	0.000 6	0.569 6	0.008 5	0.071 4	0.000 5	458	5	445	3
L01-17	151.5	897.9	1 864.0	0.48	0.056 6	0.000 8	0.543 8	0.009 0	0.069 6	0.000 4	441	6	434	3
L01-18	5.0	74.1	49.8	1.49	0.072 4	0.003 6	0.644 8	0.031 7	0.066 0	0.000 9	505	20	412	6
L01-19	10.2	41.1	121.3	0.34	0.065 4	0.002 2	0.560 1	0.019 7	0.066 1	0.001 3	452	13	413	8
L01-20	4.3	23.2	55.6	0.42	0.062 5	0.003 0	0.562 3	0.027 3	0.065 7	0.000 8	453	18	410	5
L01-21	10.3	73.5	124.3	0.59	0.060 1	0.004 5	0.522 6	0.037 5	0.063 3	0.001 2	427	25	396	7
L01-22	263.5	1745.6	3 767.3	0.46	0.056 4	0.000 5	0.471 0	0.006 2	0.060 4	0.000 4	392	4	378	3
L01-23	117.9	1443.8	1 236.9	1.17	0.057 4	0.002 8	0.554 6	0.027 2	0.068 5	0.001 0	448	18	427	6
L01-24	88.5	839.8	1 030.7	0.81	0.056 8	0.003 3	0.493 4	0.026 4	0.062 7	0.001 1	407	18	392	7

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表 2 东天山觉罗塔格构造带雅满苏组火山岩主量、微量分析结果(%)

Table 2. Major element compositions of volcanic rocks from Yamansu Formation

样品号岩石名称	SQ3-2	1274-3	SQ4-1	SQ4-3	1274-4	SQ2-9	1098-1	SQ4-5	SQ2-8	SQ2-1	SQ2-2	SQ2-5	SQ1-1	1050-2	1050-3	SQ4-4	1090-2
样品号岩石名称	玄武岩		辉石安山岩			安山岩					凝灰岩		英安岩
SiO₂	44.93	51.86	53.18	53.75	54.10	57.69	57.35	59.40	59.97	58.54	60.50	61.97	64.38	65.43	67.67	67.51	71.56
TiO₂	1.44	1.11	0.65	0.64	0.97	0.88	1.96	0.64	1.17	1.12	1.23	1.02	0.70	0.99	0.76	0.48	0.31
Al₂O₃	15.20	19.24	18.86	18.99	14.88	15.03	14.12	16.39	14.51	13.9	14.55	14.15	16.15	13.52	13.63	15.21	12.66
Cr₂O₃	0.09	0.01	0.01	0.01	0.01	0.02	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01
Fe₂O₃	1.50	1.42	1.04	1.07	1.23	0.92	1.23	0.68	1.04	0.90	1.08	0.80	0.64	0.81	0.80	0.33	0.37
FeO	8.53	8.02	5.90	6.07	6.95	5.23	6.97	3.85	5.90	5.10	6.14	4.55	3.63	4.57	4.54	1.84	2.10
MnO	0.3	0.10	0.17	0.17	0.31	0.09	0.16	0.06	0.12	0.16	0.13	0.11	0.16	0.12	0.06	0.07	0.11
MgO	9.75	1.66	3.78	3.83	2.03	3.25	2.03	2.46	1.66	0.90	1.79	0.85	2.66	1.89	0.91	1.43	2.04
CaO	4.42	2.77	6.10	5.21	3.03	4.06	3.53	3.45	2.51	5.38	1.85	3.36	3.11	2.17	1.54	1.66	0.48
Na₂O	1.16	4.02	3.52	3.92	0.16	4.47	5.21	5.84	6.51	6.46	6.35	6.01	3.70	5.47	7.13	2.54	1.90
K₂O	1.67	4.57	2.18	2.04	9.23	1.44	2.69	2.24	1.25	1.28	1.37	2.00	1.40	0.17	0.10	4.69	4.19
P₂O₅	0.333	0.393	0.157	0.159	0.292	0.228	0.744	0.188	0.32	0.292	0.338	0.271	0.095	0.256	0.149	0.082	0.044
SrO	0.01	0.02	0.04	0.05	0.01	0.04	0.03	0.03	0.01	0.01	0.04	0.01	0.03	0.03	0.01	0.02	0.02
BaO	0.04	0.04	0.05	0.04	0.14	0.08	0.05	0.05	0.03	0.03	0.03	0.04	0.04	0.01	0.01	0.06	0.14
LOI	8.16	2.71	3.60	3.27	3.95	4.24	1.83	2.85	2.58	4.47	2.12	3.31	2.09	2.96	1.43	2.39	1.93
Total	97.54	97.94	99.24	99.21	97.29	97.67	97.91	98.14	97.59	98.55	97.53	98.46	98.80	98.40	98.75	98.32	97.86
FeOt	10.03	9.44	6.95	7.14	8.18	6.15	8.20	4.53	6.94	6.00	7.23	5.35	4.27	5.37	5.34	2.17	2.47
Fe₂O₃t	11.15	10.49	7.72	7.93	9.09	6.84	9.11	5.04	7.71	6.67	8.03	5.95	4.75	5.97	5.94	2.41	2.74
Na₂O+K₂O	2.83	8.59	5.70	5.96	9.39	5.91	7.90	8.08	7.76	7.74	7.72	8.01	5.1	5.64	7.23	7.23	6.09
Na₂O/K₂O	0.69	0.88	1.61	1.92	0.02	3.10	1.94	2.61	5.21	5.05	4.64	3.01	2.64	32.18	71.30	0.54	0.45
La	16.40	15.80	7.40	7.20	12.50	23.10	42.00	10.50	8.60	6.40	7.60	17.20	26.90	16.60	6.80	12.50	11.10
Ce	38.40	34.90	15.60	15.50	31.30	46.20	98.60	25.80	22.30	17.20	19.80	39.70	69.10	41.20	17.50	28.90	27.10
Pr	5.36	4.83	2.13	2.19	3.96	5.67	13.40	3.68	3.57	2.93	3.14	5.67	6.36	5.69	2.71	4.08	2.79
Nd	23.60	21.50	9.90	10.10	17.80	23.30	57.70	15.90	17.50	15.50	15.90	26.00	25.80	26.00	13.10	17.80	11.10
Sm	5.35	5.04	2.48	2.52	4.39	4.82	13.40	3.78	4.67	4.99	4.19	6.17	6.03	6.63	3.88	4.15	2.60
Eu	1.59	1.51	0.89	0.91	1.50	1.39	3.61	1.40	1.27	1.39	1.08	1.74	1.74	1.58	1.18	0.85	0.65
Gd	4.81	4.84	2.49	2.55	4.51	4.31	13.00	3.42	4.66	5.37	4.35	5.98	5.91	7.17	4.37	3.88	2.71
Tb	0.73	0.73	0.39	0.39	0.65	0.65	2.02	0.52	0.78	0.97	0.71	0.96	0.93	1.23	0.74	0.64	0.46
Dy	4.39	4.70	2.55	2.53	4.20	4.10	12.25	3.31	5.15	6.39	4.67	6.11	5.97	8.33	4.92	4.24	3.23
Ho	0.89	1.09	0.54	0.55	0.95	0.86	2.62	0.72	1.08	1.32	1.00	1.29	1.29	1.82	1.08	0.92	0.71
Er	2.57	3.48	1.60	1.63	2.94	2.47	7.26	2.17	3.09	3.78	3.01	3.66	3.96	5.55	3.26	2.93	2.28
Tm	0.35	0.58	0.23	0.23	0.45	0.34	1.09	0.32	0.44	0.53	0.44	0.53	0.59	0.80	0.48	0.47	0.34
Yb	2.22	3.79	1.54	1.60	2.91	2.21	6.81	2.12	2.90	3.39	2.94	3.32	4.05	5.31	3.14	3.31	2.47
Lu	0.35	0.65	0.25	0.26	0.46	0.34	1.07	0.34	0.44	0.48	0.46	0.52	0.65	0.84	0.47	0.55	0.41
Y	24.3	33.2	15.7	15.1	29.0	23.5	79.7	20.2	28.2	34.1	26.2	34.0	36.0	49.2	29.9	26.1	19.2
∑REE	131.31	136.64	63.69	63.26	117.52	143.26	354.53	94.18	104.65	104.74	95.49	152.85	195.28	177.95	93.53	111.32	87.15
Rb	55.8	164.5	56.2	55.0	270.0	30.4	69.6	54.2	18.6	22.0	22.9	42.4	111.5	2.1	1.7	149.0	129.0
Ba	400.0	477.0	445.0	358.0	1 340.0	800.0	534.0	518.0	313.0	273.0	338.0	381.0	402.0	94.2	63.1	637.0	1 270.0
Th	2.01	7.19	1.22	1.24	6.09	4.42	5.16	3.61	3.86	3.63	4.11	4.48	9.64	4.79	2.70	10.10	8.17
U	1.46	1.32	0.48	0.52	2.00	1.49	2.28	1.20	1.16	0.98	1.41	1.22	3.28	2.25	1.58	3.21	2.2
K	14 800	34 600	17 000	15 400	47 600	12 000	21 100	17 100	10 600	10 600	11 300	16 800	11 700	1 300	800	37 200	33 800
Nb	6.6	6.2	1.8	1.7	5.1	7.4	18	3	3.8	3.6	4.1	4.3	8.7	5.6	2.3	6.6	6.5
Ta	0.4	0.5	0.1	0.1	0.4	0.5	1.2	0.2	0.3	0.3	0.3	0.3	0.7	0.4	0.2	0.5	0.6
Pb	8	8	9	9	8	9	9	6	20	17	19	24	17	5	5	7	5
Sr	138.5	187.5	463.0	559.0	84.5	444.0	299.0	273.0	127.5	129.0	384.0	107.5	335.0	313.0	117.5	232.0	151.5
P	1 650	1 750	710	730	1 340	1 070	3 450	890	1 550	1 400	1 600	1 270	480	1260	750	430	250
Zr	165	224	54	58	185	179	511	98	132	122	141	152	380	208	102	255	157
Hf	3.7	5.8	1.5	1.6	4.7	4.2	11.4	2.7	3.9	3.6	4.1	4.4	9.5	5.8	3.1	7.1	4.1
Ti	8 470	5 400	3 500	3 470	4 650	5 100	10 850	3 470	5 270	5 390	5 800	4 420	3 890	5 610	4 380	2 410	1 910

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