松嫩平原黑土区西北部阿荣旗地下黑土稀土元素特征及环境指示

doi:10.19657/j.geoscience.1000-8527.2022.098

摘要/Abstract

摘要：

东北黑土的形成长期备受学者们的关注,然而人类活动不同程度影响着表层黑土的自然特征。地下黑土能较为真实地反映客观属性,但其研究仍然匮乏,由此本文选择松嫩平原黑土区阿荣旗钻孔内的地下黑土为研究对象,进行稀土元素地球化学测试,采用地质统计学分析地下黑土层ΣREE、HREE、LREE的分布特征,结合Ce异常、Eu异常、 (La/Yb)_N、(La/Sm)_N、(Gd/Yb)_N、Al₂O₃ /TiO₂图解、Ce_anom讨论了黑土的物源特征与环境记录。结果显示,阿荣旗地下黑土ΣREE含量较高,平均值为141.45×10^-6。球粒陨石标准化曲线表现为向右倾斜,轻稀土富集,δEu微弱负异常,δCe明显负异常。 (La/Yb)_N平均值7.58,(La/Sm)_N平均值为1.14,(Gd/Yb)_N平均值为3.54,表明地下黑土重、轻稀土元素分异程度大,轻稀土元素相比重稀土元素分馏作用更为显著;稀土元素配分曲线指示多个物源特征,δEu与Al₂O₃ /TiO₂图解共同指示地下黑土的源岩为下白垩统中-酸性火山岩;Ce_anom>-0.1(平均值3.9)指示其形成于还原环境。

关键词: 黑土, 环境指示, 稀土元素, 阿荣旗地区, 物源示踪

Abstract:

Formation of black soil in Northeast China has long been a research focus in the academia, but anthropological activities have influenced the study of surficial black soil to varying degrees. At present, there is a paucity of research on the underground black soil. In this study, the black soil from drill-cores at Arongqi of the Songnen Plain was sampled for REE geochemical analysis. Distributions of ΣREE, HREE and LREE elements of the deep black soil layer were analyzed by geostatistics. Combined with the Ce anomaly, Eu anomaly, (La/Yb)_N, (La/Sm)_N, (Gd/Yb)_N, Al₂O₃ vs. TiO₂ diagram and Ce_anom, the provenance and formation environment of the black soil are discussed. The results show that the subsurface black soil at Arongqi have high ΣREE content (avg. 141.45 mg·kg^-1). The right-inclining chondrite-normalized patterns show LREE enrichments, with weak negative Eu and strong negative Ce anomalies. The average (La/Yb)_N =7.58, (La/Sm)_N=1.14, and (Gd/Yb)_N=3.54, indicating that the HREEs and LREEs are highly fractionated, and the LREE fractionation is stronger than that of HREE. The δEu and Al₂O₃/TiO₂ diagram indicate that the subsurface black soil was sourced from the nearby Cretaceous felsic-intermediate magmatic rocks. The Ce_anom >-0.1 (mean 3.9)suggests an anoxic environment.

Key words: black soil, environmental significance, rare earth element, Arongqi, provenance study

中图分类号:

P595
X142

杜贯新, 闫百泉, 孙雨, 钱程, 秦涛, 臧延庆. 松嫩平原黑土区西北部阿荣旗地下黑土稀土元素特征及环境指示[J]. 现代地质, 2023, 37(03): 813-820.

DU Guanxin, YAN Baiquan, SUN Yu, QIAN Cheng, QIN Tao, ZANG Yanqing. REE Geochemistry and Its Environmental Significance of Subsurface Black Soil from Northwestern Arongqi, Songnen Plain Black Soil District[J]. Geoscience, 2023, 37(03): 813-820.

图/表 6

参考文献 48

[1]	崔明, 张旭东, 蔡强国, 等. 东北典型黑土区气候、地貌演化与黑土发育关系[J]. 地理研究, 2008, 27(3):527-535.
[2]	刘宝元, 张甘霖, 谢云, 等. 东北黑土区和东北典型黑土区的范围与划界[J]. 科学通报, 2021, 66(1): 96-106.
[3]	孙淳浩, 余丹, 王冬艳, 等. 吉林中部黑土区重金属元素生态地球化学特征[J]. 世界地质, 2018, 37(4): 1301-1308.
[4]	刘媚媚, 高凤杰, 韩晶, 等. 黑土区小流域土壤重金属生态危害与来源解析[J]. 中国农业大学学报, 2020, 25(11): 12-21.
[5]	温磊磊, 王教河, 任明, 等. 东北黑土区水土流失综合治理成效[J]. 中国水土保持, 2021(6): 4-7.
[6]	韩晓增, 李娜. 中国东北黑土地研究进展与展望[J]. 地理科学, 2018, 38(7): 1032-1041. DOI
[7]	宋运红, 刘凯, 戴慧敏, 等. 松辽平原典型黑土-古土壤剖面AMS ¹⁴C年龄首次报道[J]. 中国地质, 2020, 47(6): 1926-1927.
[8]	宋运红, 刘凯, 戴慧敏, 等. 松嫩平原东部典型黑土剖面孢粉组合及其时代和古气候意义[J]. 地质通报, 2022, 41(9):1528-1538.
[9]	韩晓萌, 戴慧敏, 梁帅, 等. 黑龙江省拜泉地区典型黑土剖面元素地球化学特征及其环境指示意义[J]. 地质与资源, 2020, 29(6): 556-563.
[10]	冉勇, 刘铮. 我国主要土壤中稀土元素的含量和分布[J]. 中国稀土学报, 1994, 12(3): 248-252.
[11]	刘建国, 陈忠, 颜文, 等. 南海表层沉积物中细粒组分的稀土元素地球化学特征[J]. 地球科学, 2010, 35(4): 563-571.
[12]	刘永林, 雒昆利, 袁余洋. 重庆市江津区表层土壤中稀土元素含量与分布特征[J]. 中国稀土学报, 2020, 38(2): 215-224.
[13]	TYLER G. Rare earth elements in soil and plant systems-A review[J]. Plant and Soil, 2004, 267(1/2): 191-206. DOI URL
[14]	GUO H M, ZHANG B, WANG G C, et al. Geochemical controls on arsenic and rare earth elements approximately along a ground-water flow path in the shallow aquifer of the Hetao Basin, Inner Mongolia[J]. Chemical Geology, 2010, 270(1/2/3/4): 117-125. DOI URL
[15]	BRYANIN S V, SOROKINA O A. The first data on the vertical REE distribution in taiga soils of the Russian Far East[J]. Doklady Earth Sciences, 2015, 464(2): 1053-1057. DOI URL
[16]	MERYEM B, JI H B, YANG G, et al. Distribution of rare earth elements in agricultural soil and human body (scalp hair and urine) near smelting and mining areas of Hezhang, China[J]. Journal of Rare Earths, 2016, 34(11): 1156-1167. DOI URL
[17]	李朝峰, 李启航, 刘岚君, 等. 贵州蓝莓核心产区岩石-土壤-植物系统稀土元素地球化学特征[J]. 中国稀土学报, 2021, 39(4): 653-662.
[18]	郑天亮, 邓娅敏, 鲁宗杰, 等. 江汉平原浅层含砷地下水稀土元素特征及其指示意义[J]. 地球科学, 2017, 42(5): 693-706.
[19]	唐坤, 王学求, 迟清华, 等. 兴蒙—华北地球化学走廊带稀土元素含量与空间分布[J]. 地球科学, 2018, 43(3): 655-671.
[20]	朱伟峰. 内蒙古自治区阿荣旗水资源区划与分析[D]. 哈尔滨: 黑龙江大学, 2015:30-100.
[21]	HAN D X, GAO C Y, YU Z C, et al. Late Holocene vegetation and climate changes in the Great Hinggan Mountains, northeast China[J]. Quaternary International, 2019, 532: 138-145. DOI URL
[22]	秦涛, 臧延庆, 汪岩, 等. 内蒙古阿荣旗幅 (1∶50000)区域地质调查报告[R]. 中国地质调查局沈阳地质调查中心, 2021:30-200.
[23]	杜贯新, 闫百泉, 孙雨, 等. 松嫩平原黑土区西北部阿荣旗黑土重金属分布特征、评价及预警[J]. 地质科学, 2022, 57(2): 606-621.
[24]	FORTH H D. Fundamentals of soil science[J]. Soil Science, 1978, 125(4): 272.
[25]	中国环境监测总站. 中国土壤环境背景值研究[R]. 北京: 中国环境监测总站, 2001: 330-487.
[26]	HUMSA T Z, SRIVASTAVA R K. Impact of rare: earth mining and processing on soil and water environment at Chavara, Kollam, Kerala: A case study[J]. Procedia Earth and Planetary Science, 2015, 11(6): 566-581. DOI URL
[27]	TAYLOR S R, MCLENNAN S M. The Continental Crust: Its Composition and Evolution[M]. Oxford: Blackwell Scientic Publications, 1985.
[28]	EYRING L, GSCHNEIDNER K A, LANDER G H. Handbook on the Physics and Chemistry of Rare Earths[M]. Amsterdam: North Holland Publishing Company, 1979.
[29]	ZHU W, KENNEDY M, DE LEER E W B, et al. Distribution and modelling of rare earth elements in Chinese river sediments[J]. Science of the Total Environment, 1997, 204(3):233-243. DOI URL
[30]	秦飞, 李倩, 季宏兵, 等. 密云县潮河流域沿岸铁矿集中区土壤中稀土元素的地球化学特征及粒度效应[J]. 中国稀土学报, 2014, 32(1): 108-116.
[31]	樊连杰, 裴建国, 赵良杰, 等. 岩溶地下河系统中表层土壤稀土元素含量及分布特征[J]. 中国稀土学报, 2016, 34(4): 504-512.
[32]	陈江, 毕京博, 许健, 等. 湖州表层土壤稀土元素含量及分布特征[J]. 中国无机分析化学, 2011, 1(4): 68-71.
[33]	王祖伟, 刘雅明, 王子璐, 等. 中国北方典型设施菜地土壤稀土元素分布特征及环境意义[J]. 环境科学, 2022, 43(4): 2071-2080.
[34]	黄成敏, 王成善. 风化成土过程中稀土元素地球化学特征[J]. 稀土, 2002, 23(5): 46-49.
[35]	赵志根. 不同球粒陨石平均值对稀土元素参数的影响:兼论球粒陨石标准[J]. 标准化报道, 2000(3): 15-16.
[36]	杨吉忠, 廖激, 熊定国, 等. 四川省土壤中稀土元素的背景值及其地球化学特征初探[J]. 中国环境监测, 1992, 8 (3):90-94.
[37]	HENDERSON P. Rare Earth Element Geochemistry[M]. Amsterdam: Elsevier, 1984.
[38]	窦衍光, 李军, 李炎. 北部湾东部海域表层沉积物稀土元素组成及物源指示意义[J]. 地球化学, 2012, 41(2):147-157.
[39]	WICHE O, ZERTANI V, HENTSCHEL W et al. Germanium and rare earth elements in topsoil and soil-grown plants on different land use types in the mining area of Freiberg(Germany)[J]. Journal of Geochemical Exploration, 2017, 175(1):120-129. DOI URL
[40]	ROY P D, SMYKATZ-KLOSS W. REE geochemistry of the recent Playa sediments from the Thar Desert, India: An implication to Playa sediment provenance[J]. Chemie der Erde-Geochemistry-Interdisciplinary Journal for Chemical Problems of the Geosciences and Geoecology, 2007, 67(1): 55-68.
[41]	CULLERS R L. The geochemistry of shales, siltstones and sandstones of Pennsylvanian—Permian age, Colorado, USA: implications for provenance and metamorphic studies[J]. Lithos, 2000, 51(3): 181-203. DOI URL
[42]	HE B, XU Y G, ZHONG Y T, et al. The Guadalupian-Lopingian boundary mudstones at Chaotian (SW China)are clastic rocks rather than acidic tuffs: Implication for a temporal coincidence between the end Guadalupian mass extinction and the Emeishan volcanism[J]. Lithos, 2010, 119(1/2): 10-19. DOI URL
[43]	HAYASHI K I, FUJISAWA H, HOLLAND H D, et al. Geochemistry of approximately 1.9 Ga sedimentary rocks from northeastern Labrador, Canada[J]. Geochimica et Cosmochimica Acta, 1997, 61: 4115-4137. PMID
[44]	师良, 范柏江, 王霞, 等. 鄂尔多斯盆地长9页岩烃源岩的元素组成及其古沉积环境[J]. 现代地质, 2021, 35(4):1043-1053.
[45]	夏锦胜, 孙莉, 张鹏, 等. 四川坪河晶质石墨矿床地球化学特征及成因分析[J]. 现代地质, 2022, 36(6):1486-1496.
[46]	白翔宇, 马郡伟, 夏清萍, 等. 北京西山下苇甸第三统/芙蓉统界线附近碳酸盐岩地球化学特征及古环境意义[J]. 现代地质, 2022, 36(2):729-741.
[47]	ELDERFIELD H, GREAVES M J. The rare earth elements in seawater[J]. Nature, 1982, 296: 214-219. DOI
[48]	ŠMUCNR, DOLENEC T, SERAFIMOVSKI T, et al. Geochemical characteristics of rare earth elements (REEs) in the paddy soil and rice (Oryza sativa L.) system of Kočani Field, Republic of Macedonia[J]. Geoderma, 2012, 183: 1-11.

序号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	∑REE	LREE	HREE	L/H	Al₂O₃	TiO₂
HT0-4-2	29.10	64.90	7.51	29.10	5.30	1.20	4.40	0.80	4.00	0.86	2.48	0.40	2.59	0.39	153.03	137.11	15.92	8.61	13.81	0.24
HT1-2-2	31.10	64.10	8.52	34.50	6.20	1.55	4.83	0.71	3.63	0.75	2.06	0.31	1.98	0.28	160.52	145.97	14.55	10.03	14.65	0.38
HT6-6-2	20.90	44.10	5.51	22.20	4.21	1.07	3.51	0.56	3.14	0.87	2.19	0.32	2.05	0.29	110.92	97.99	12.93	7.58	14.70	0.40
HT6-5-2	25.50	55.50	6.41	24.70	4.46	0.99	3.55	0.60	3.14	0.69	1.96	0.31	1.99	0.29	130.09	117.56	12.53	9.38	15.11	0.42
HT4-3-2	29.30	53.20	7.22	28.30	4.94	1.40	3.95	0.65	3.34	0.80	2.18	0.33	2.08	0.31	138.00	124.36	13.64	9.12	15.23	0.46
HT1-1-2	35.40	74.70	9.81	40.10	7.21	1.78	5.69	0.85	4.25	0.89	2.40	0.34	2.14	0.29	185.85	169.00	16.85	10.03	15.33	0.46
HT1-4-2	29.20	59.40	6.84	25.30	4.53	1.02	3.69	0.62	3.45	0.66	1.96	0.32	2.14	0.30	139.43	126.29	13.14	9.61	15.36	0.49
HT1-3-2	24.80	49.50	6.22	23.90	4.33	1.10	3.33	0.58	3.08	0.75	2.13	0.32	2.19	0.33	122.56	109.85	12.71	8.64	15.47	0.49
HT0-6-2	28.40	54.20	6.89	28.00	5.19	1.44	4.38	0.72	3.78	0.80	2.27	0.33	2.28	0.33	139.01	124.12	14.89	8.34	15.80	0.52
HT0-1-2	24.80	50.10	6.23	23.40	4.14	0.85	3.35	0.57	3.15	0.75	2.13	0.34	2.28	0.34	122.43	109.52	12.91	8.48	15.83	0.52
HT0-3-2	28.00	56.10	6.81	25.20	4.45	0.95	3.72	0.58	3.10	0.74	2.13	0.34	2.19	0.33	134.64	121.51	13.13	9.25	16.05	0.52
HT6-2-2	22.70	44.30	5.79	22.70	4.24	0.94	3.40	0.52	2.66	0.49	1.47	0.22	1.59	0.24	111.26	100.67	10.59	9.51	16.21	0.56
HT6-1-2	24.30	52.00	6.41	25.90	4.82	1.22	3.92	0.64	3.34	0.63	1.81	0.29	1.87	0.28	127.43	114.65	12.78	8.97	16.31	0.57
HT6-3-2	20.80	45.50	5.83	23.50	4.40	1.07	3.68	0.57	2.92	0.57	1.68	0.26	1.66	0.25	112.69	101.10	11.59	8.72	16.56	0.58
HT4-1-2	28.20	55.10	6.87	25.80	4.56	1.06	3.71	0.59	3.23	0.72	1.99	0.31	2.11	0.33	134.58	121.59	12.99	9.36	16.61	0.58
HT4-5-2	31.00	61.00	7.79	29.70	5.36	1.01	4.30	0.71	3.82	0.89	2.53	0.40	2.70	0.38	151.59	135.86	15.73	8.64	16.99	0.58
HT4-6-2	17.30	35.10	5.05	21.60	4.27	1.19	3.54	0.60	3.25	0.61	1.75	0.27	1.74	0.25	96.52	84.51	12.01	7.04	17.22	0.60
HT0-2-2	32.80	63.20	8.03	30.50	5.41	1.19	4.54	0.73	4.11	0.84	2.48	0.39	2.69	0.40	157.31	141.13	16.18	8.72	17.29	0.60
HT4A-1-2	33.00	62.50	8.49	33.20	5.68	1.36	4.78	0.76	4.22	0.95	2.68	0.41	2.83	0.43	161.29	144.23	17.06	8.45	17.32	0.62
HT4A-4-2	23.80	46.80	6.07	23.80	4.14	1.12	3.45	0.55	2.92	0.70	1.87	0.30	1.92	0.29	117.73	105.73	12.00	8.81	17.43	0.62
HT4A-3-2	36.20	70.10	9.86	40.90	7.74	2.12	6.44	1.03	5.25	1.13	3.10	0.44	2.87	0.40	187.58	166.92	20.66	8.08	17.50	0.64
HT4A-2-2	43.90	71.40	8.94	33.40	5.62	1.37	4.52	0.71	3.79	0.86	2.48	0.37	2.50	0.37	180.23	164.63	15.60	10.55	17.69	0.69
HT4A-5-2	36.30	81.00	8.68	32.90	6.08	1.31	5.24	0.86	4.66	1.04	2.92	0.45	2.93	0.42	184.79	166.27	18.52	8.98	17.79	0.75
HT6-7-2	29.90	59.80	7.61	28.80	5.13	1.18	4.06	0.66	3.34	0.74	2.04	0.33	2.08	0.33	146.00	132.42	13.58	9.75	17.88	0.75
HT6-4-2	23.10	46.20	6.00	24.10	4.57	1.19	3.77	0.62	3.07	0.60	1.76	0.29	1.86	0.27	117.40	105.16	12.24	8.59	18.24	0.76
HT4-2-2	29.80	58.70	7.48	28.80	5.03	1.20	3.99	0.64	3.45	0.75	2.12	0.31	2.13	0.31	144.71	131.01	13.70	9.56	18.32	0.79
HT2-4-2	27.50	56.30	6.95	26.70	4.86	1.32	3.95	0.63	3.54	0.84	2.29	0.36	2.34	0.33	137.91	123.63	14.28	8.66	18.38	0.88
HT2-3-2	32.00	62.70	7.83	29.50	5.27	1.16	4.43	0.72	3.82	0.80	2.28	0.35	2.41	0.36	153.63	138.46	15.17	9.13	18.56	0.97
HT1-5-2	25.80	51.20	7.34	30.80	5.98	1.54	4.95	0.81	4.40	1.02	2.73	0.40	2.49	0.36	139.82	122.66	17.16	7.15	18.74	1.00
HT2-2-2	26.40	53.30	6.51	24.50	4.29	1.01	3.68	0.62	3.28	0.65	2.03	0.33	2.16	0.31	129.07	116.01	13.06	8.88	19.07	1.01
HT1-6-2	34.80	67.50	8.50	31.30	5.50	0.79	4.65	0.80	4.37	0.87	2.61	0.43	2.90	0.43	165.45	148.39	17.06	8.70	19.28	1.12
HT0-5-2	28.20	54.90	6.79	25.20	4.30	1.03	3.56	0.57	3.18	0.65	1.95	0.31	2.11	0.32	133.07	120.42	12.65	9.52	19.29	1.20
检出限	0.010	0.010	0.010	0.010	0.010	0.003	0.010	0.003	0.003	0.003	0.003	0.003	0.010	0.003					0.020	0.020

序号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	∑REE	LREE	HREE	L/H	Al₂O₃	TiO₂
HT0-4-2	29.10	64.90	7.51	29.10	5.30	1.20	4.40	0.80	4.00	0.86	2.48	0.40	2.59	0.39	153.03	137.11	15.92	8.61	13.81	0.24
HT1-2-2	31.10	64.10	8.52	34.50	6.20	1.55	4.83	0.71	3.63	0.75	2.06	0.31	1.98	0.28	160.52	145.97	14.55	10.03	14.65	0.38
HT6-6-2	20.90	44.10	5.51	22.20	4.21	1.07	3.51	0.56	3.14	0.87	2.19	0.32	2.05	0.29	110.92	97.99	12.93	7.58	14.70	0.40
HT6-5-2	25.50	55.50	6.41	24.70	4.46	0.99	3.55	0.60	3.14	0.69	1.96	0.31	1.99	0.29	130.09	117.56	12.53	9.38	15.11	0.42
HT4-3-2	29.30	53.20	7.22	28.30	4.94	1.40	3.95	0.65	3.34	0.80	2.18	0.33	2.08	0.31	138.00	124.36	13.64	9.12	15.23	0.46
HT1-1-2	35.40	74.70	9.81	40.10	7.21	1.78	5.69	0.85	4.25	0.89	2.40	0.34	2.14	0.29	185.85	169.00	16.85	10.03	15.33	0.46
HT1-4-2	29.20	59.40	6.84	25.30	4.53	1.02	3.69	0.62	3.45	0.66	1.96	0.32	2.14	0.30	139.43	126.29	13.14	9.61	15.36	0.49
HT1-3-2	24.80	49.50	6.22	23.90	4.33	1.10	3.33	0.58	3.08	0.75	2.13	0.32	2.19	0.33	122.56	109.85	12.71	8.64	15.47	0.49
HT0-6-2	28.40	54.20	6.89	28.00	5.19	1.44	4.38	0.72	3.78	0.80	2.27	0.33	2.28	0.33	139.01	124.12	14.89	8.34	15.80	0.52
HT0-1-2	24.80	50.10	6.23	23.40	4.14	0.85	3.35	0.57	3.15	0.75	2.13	0.34	2.28	0.34	122.43	109.52	12.91	8.48	15.83	0.52
HT0-3-2	28.00	56.10	6.81	25.20	4.45	0.95	3.72	0.58	3.10	0.74	2.13	0.34	2.19	0.33	134.64	121.51	13.13	9.25	16.05	0.52
HT6-2-2	22.70	44.30	5.79	22.70	4.24	0.94	3.40	0.52	2.66	0.49	1.47	0.22	1.59	0.24	111.26	100.67	10.59	9.51	16.21	0.56
HT6-1-2	24.30	52.00	6.41	25.90	4.82	1.22	3.92	0.64	3.34	0.63	1.81	0.29	1.87	0.28	127.43	114.65	12.78	8.97	16.31	0.57
HT6-3-2	20.80	45.50	5.83	23.50	4.40	1.07	3.68	0.57	2.92	0.57	1.68	0.26	1.66	0.25	112.69	101.10	11.59	8.72	16.56	0.58
HT4-1-2	28.20	55.10	6.87	25.80	4.56	1.06	3.71	0.59	3.23	0.72	1.99	0.31	2.11	0.33	134.58	121.59	12.99	9.36	16.61	0.58
HT4-5-2	31.00	61.00	7.79	29.70	5.36	1.01	4.30	0.71	3.82	0.89	2.53	0.40	2.70	0.38	151.59	135.86	15.73	8.64	16.99	0.58
HT4-6-2	17.30	35.10	5.05	21.60	4.27	1.19	3.54	0.60	3.25	0.61	1.75	0.27	1.74	0.25	96.52	84.51	12.01	7.04	17.22	0.60
HT0-2-2	32.80	63.20	8.03	30.50	5.41	1.19	4.54	0.73	4.11	0.84	2.48	0.39	2.69	0.40	157.31	141.13	16.18	8.72	17.29	0.60
HT4A-1-2	33.00	62.50	8.49	33.20	5.68	1.36	4.78	0.76	4.22	0.95	2.68	0.41	2.83	0.43	161.29	144.23	17.06	8.45	17.32	0.62
HT4A-4-2	23.80	46.80	6.07	23.80	4.14	1.12	3.45	0.55	2.92	0.70	1.87	0.30	1.92	0.29	117.73	105.73	12.00	8.81	17.43	0.62
HT4A-3-2	36.20	70.10	9.86	40.90	7.74	2.12	6.44	1.03	5.25	1.13	3.10	0.44	2.87	0.40	187.58	166.92	20.66	8.08	17.50	0.64
HT4A-2-2	43.90	71.40	8.94	33.40	5.62	1.37	4.52	0.71	3.79	0.86	2.48	0.37	2.50	0.37	180.23	164.63	15.60	10.55	17.69	0.69
HT4A-5-2	36.30	81.00	8.68	32.90	6.08	1.31	5.24	0.86	4.66	1.04	2.92	0.45	2.93	0.42	184.79	166.27	18.52	8.98	17.79	0.75
HT6-7-2	29.90	59.80	7.61	28.80	5.13	1.18	4.06	0.66	3.34	0.74	2.04	0.33	2.08	0.33	146.00	132.42	13.58	9.75	17.88	0.75
HT6-4-2	23.10	46.20	6.00	24.10	4.57	1.19	3.77	0.62	3.07	0.60	1.76	0.29	1.86	0.27	117.40	105.16	12.24	8.59	18.24	0.76
HT4-2-2	29.80	58.70	7.48	28.80	5.03	1.20	3.99	0.64	3.45	0.75	2.12	0.31	2.13	0.31	144.71	131.01	13.70	9.56	18.32	0.79
HT2-4-2	27.50	56.30	6.95	26.70	4.86	1.32	3.95	0.63	3.54	0.84	2.29	0.36	2.34	0.33	137.91	123.63	14.28	8.66	18.38	0.88
HT2-3-2	32.00	62.70	7.83	29.50	5.27	1.16	4.43	0.72	3.82	0.80	2.28	0.35	2.41	0.36	153.63	138.46	15.17	9.13	18.56	0.97
HT1-5-2	25.80	51.20	7.34	30.80	5.98	1.54	4.95	0.81	4.40	1.02	2.73	0.40	2.49	0.36	139.82	122.66	17.16	7.15	18.74	1.00
HT2-2-2	26.40	53.30	6.51	24.50	4.29	1.01	3.68	0.62	3.28	0.65	2.03	0.33	2.16	0.31	129.07	116.01	13.06	8.88	19.07	1.01
HT1-6-2	34.80	67.50	8.50	31.30	5.50	0.79	4.65	0.80	4.37	0.87	2.61	0.43	2.90	0.43	165.45	148.39	17.06	8.70	19.28	1.12
HT0-5-2	28.20	54.90	6.79	25.20	4.30	1.03	3.56	0.57	3.18	0.65	1.95	0.31	2.11	0.32	133.07	120.42	12.65	9.52	19.29	1.20
检出限	0.010	0.010	0.010	0.010	0.010	0.003	0.010	0.003	0.003	0.003	0.003	0.003	0.010	0.003					0.020	0.020

数值类型	REE(10^-6)	LREE(10^-6)	HREE(10^-6)	LREE/HREE	La/Yb	La/Sm	Gd/Yb	δCe	δEu	Ce_anom
最小值	283.32	207.17	66.35	2.71	5.92	2.54	0.90	0.36	0.51	3.49
最大值	535.62	405.63	129.99	3.87	10.41	4.89	1.63	0.46	1.03	4.20
平均值	391.00	298.71	92.29	3.24	7.58	3.54	1.14	0.41	0.86	3.90

数值类型	REE(10^-6)	LREE(10^-6)	HREE(10^-6)	LREE/HREE	La/Yb	La/Sm	Gd/Yb	δCe	δEu	Ce_anom
最小值	283.32	207.17	66.35	2.71	5.92	2.54	0.90	0.36	0.51	3.49
最大值	535.62	405.63	129.99	3.87	10.41	4.89	1.63	0.46	1.03	4.20
平均值	391.00	298.71	92.29	3.24	7.58	3.54	1.14	0.41	0.86	3.90