Geochemical Characteristics and Geological Significance of Retrograde Eclogite in Mengku Area, Shuangjiang County, Western Yunnan Province, China

Abstract

Abstract:

The newly found retrograde eclogite in Mengku in Yunnan Province occurs as lenses within muscovite schist. The results of geochemical analysis show that the contents of SiO₂, total alkali (Na₂O+K₂O), Al₂O₃ and TiO₂ range from 47.22% to 50.40%, 2.28% to 4.15%, 13.70% to 15.58% and from 1.39% to 3.95%, respectively, and the TiO₂ can be divided into medium (1.39% to 1.83%) and high (3.30% to 3.95%) groups. Most samples with protolith as tholeiitic basalt are characterized by high contents of TiO₂, inconspicuous Eu anomaly and slight LREE enrichment. The characteristics of REE patterns and trace elements spider diagrams of this type of samples are similar to those of E-MORB but different from N-MORB, and these samples are plotted into the fields of MORB and E-MORB in tectonic discrimination diagrams, suggesting that the protolith was formed under the environment of oceanic basin. Some samples with protolith as alkaline basalt are characterized by medium contents of TiO₂ and higher contents of ΣREE and ΣLREE than those samples metamorphosed from tholeiitic basalt. This type of samples is plotted into the field of OIB, indicating that the protolith was formed under the setting of OIB. The geochemical characteristics of retrograde eclogite are similar to those of their hosting Ordovician Wanhe ophiolite in Mengku area, implying that the retrograde eclogite is the product of the Ordovician oceanic subduction. Additionally, the samples from the study area have both characteristics of E-MORB and OIB, which are similar to those of the central Qiangtang eclogite, implying that a interaction between mantle plume magma and normal mid-oceanic ridge magma existed widely during the evolution of Tethys ocean.

Key words: retrograde eclogite, lithogeochemistrical characteristic, geological significance, Mengku area, Shuangjiang County, Western Yunnan Province

CLC Number:

P585
P595

SUN Zaibo, LI Jing, ZHOU Kun, ZENG Wentao, DUAN Xiangdong, ZHAO Jiangtai, XU Guixiang, FAN Yuehua. Geochemical Characteristics and Geological Significance of Retrograde Eclogite in Mengku Area, Shuangjiang County, Western Yunnan Province, China[J]. Geoscience, 2017, 31(04): 746-756.

Figures/Tables 8

References 60

[1]	钟大赉. 川滇西部古特提斯造山带[M]. 北京: 科学出版社, 1998: 1-231.
[2]	张旗, 周德进, 赵大升. 滇西古特提斯造山带的威尔逊旋回:岩浆活动记录和深部过程讨论[J]. 岩石学报, 1996, 12(1): 17-28.
[3]	刘本培, 冯庆来, CHONGLAKMANI C, 等. 滇西古特提斯多岛洋的结构及其南北延伸[J]. 地学前缘, 2002, 9(3): 67-76.
[4]	刘本培, 冯庆来, 方念乔, 等. 滇西昌宁-孟连带和澜沧江带古特提斯多岛洋构造演化[J]. 地球科学, 1993, 18(5): 529-539.
[5]	潘桂棠, 李兴振, 王立全, 等. 青藏高原及邻区大地构造单元初步划分[J]. 地质通报, 2002, 21(11): 701-707.
[6]	潘桂棠, 朱弟成, 王立全, 等. 班公湖-怒江缝合带作为冈瓦纳大陆北界的地质地球物理证据[J]. 地学前缘, 2004, 11(4): 371-382.
[7]	李兴振, 刘文均, 王义昭, 等. 西南三江地区特提斯构造演化与成矿(总论)[M]. 北京: 地质出版社, 1999: 1-276.
[8]	莫宣学, 沈上越, 朱勤文, 等. 三江中南段火山岩-蛇绿岩与成矿[M]. 北京: 地质出版社, 1998: 1-128.
[9]	莫宣学, 路凤香, 沈上越, 等. 三江地区特提斯火山作用与成矿[M]. 北京: 地质出版社, 1993: 128-157.
[10]	莫宣学, 潘桂棠. 从特提斯到青藏高原形成: 构造-岩浆事件的约束[J]. 地学前缘, 2006, 13(6): 43-51.
[11]	李文昌, 潘桂棠, 侯增谦, 等. 西南“三江”多岛弧盆-碰撞造山成矿理论与勘查技术[M]. 北京: 地质出版社, 2010:1-100.
[12]	康欢, 李大鹏, 陈岳龙, 等. 云南保山东缘早古生代高Si花岗岩的成因及构造意义[J]. 现代地质, 2016, 30(5): 1026-1037.
[13]	李才, 翟庆国, 董永胜, 等. 青藏高原羌塘中部发现榴辉岩及其意义[J]. 科学通报, 2006, 51(1): 70-74.
[14]	张修政, 董永胜, 李才, 等. 青藏高原羌塘中部榴辉岩地球化学特征及其大地构造意义[J]. 地质通报, 2010, 29(12):1804-1814.
[15]	翟庆国, 王军, 王永. 西藏改则县冈玛错地区发现榴辉岩[J]. 地质通报, 2009, 28(12): 1720-1724.
[16]	董永胜, 谢尧武, 李才, 等. 西藏东部八宿地区发现退变质榴辉岩[J]. 地质通报, 2007, 26(8): 1018-1020.
[17]	杨经绥, 许志琴, 耿全如, 等. 中国境内可能存在一条新的高压/超高压(?)变质带——青藏高原拉萨地体中发现榴辉岩带[J]. 地质学报, 2006, 80(12): 1787-1792.
[18]	刘良, 车自成, 罗金海, 等. 阿尔金西段榴辉岩的确定及其地质意义[J]. 科学通报, 1996, 41(16): 1485-1488.
[19]	张建新, 杨经绥, 许志琴, 等. 阿尔金榴辉岩中超高压变质作用证据[J]. 科学通报, 2002, 47(3): 231-234.
[20]	杨经绥, 许志琴, 李海兵, 等. 我国西部柴北缘地区发现榴辉岩[J]. 科学通报, 1998, 43(14): 1544-1549.
[21]	李静, 孙载波, 徐桂香, 等. 滇西双江勐库地区退变质榴辉岩的发现与厘定[J]. 矿物学报, 2015, 35(4): 421-424.
[22]	JANG B M. Sm-Nd isotope tracer study of UHP metamorphic rocks:implications for continental subduction and collisional tectonics[J]. International Geology Review, 1999, 41:859-885. DOI URL
[23]	ZHANG R Y, LIOU J G, CONG B L. Petrogenesis of garnet-bearing ultramafic rocks and associated eclogites in Su-Lu ultrahigh-P metamorphic terrane, eastern China[J]. Journal of Metamorphic Geology, 1994, 12: 169-186. DOI URL
[24]	YE K, HIRAJIMA T. High-pressure marble at Yangguantun, Rongcheng County, Shandong Province,eastern China[J]. Mineralogy & Petrology, 1996, 57:151-165.
[25]	孟繁聪, 张建新, 杨经绥, 等. 柴北缘锡铁山榴辉岩的地球化学特征[J]. 岩石学报, 2003, 19(3): 435-442.
[26]	余胜尧, 张建新, 孟繁聪, 等. 北祁连俯冲-增生杂岩带中低温榴辉岩的地球化学特征[J]. 岩石矿物学杂志, 2007, 26(2): 101-108.
[27]	云南省地质调查院. 中华人民共和国1:25万临沧县幅、滚龙幅区域地质调查报告[R]. 昆明: 云南省地质调查院, 2003:1-80.
[28]	刘桂春, 孙载波, 曾文涛, 等. 滇西双江县勐库地区湾河蛇绿混杂岩的厘定、地球化学特征及其地质意义[J]. 岩石矿物学杂志, 2017, 36(2): 163-174.
[29]	徐桂香, 曾文涛, 孙载波, 等. 滇西双江县勐库地区退变质榴辉岩的岩石学、矿物学特征[J]. 地质通报, 2016, 35(7): 1035-1045.
[30]	方润森, 范健才. 关于滇西地质的一些新认识[J]. 现代地质, 1993, 7(4):394-401.
[31]	陈光艳, 徐桂香, 孙载波. 等. 滇西双江县勐库地区退变质榴辉岩中闪石类矿物的成因研究[J]. 岩石矿物学杂志, 2017, 36(1): 36-47.
[32]	LIU Y S, ZONG K Q, KELEMEN P B, et al. Geochemistry and magmatic history of eclogites and ultramafic rocks from the Chinese continental scientific drill hole: Subduction and ultrahigh-pressure metamorphism of lower crustal cumulates[J]. Chemical Geology, 2008, 247(1/2): 133-153. DOI URL
[33]	PEARCE J A. Role of subcontinental lithosphere in magma genesis at destructive plate margins[M]//HAWKESWORTH N. Continental Basalts and Mantle Xenoliths. Nantwich: Shiva, 1983: 230-249.
[34]	TAYLOR S R, MCLENNAN S M. The Continental Crust: Its Composition and Evolution, an Examination of the Geochemical Record Preserved in Sedimentary Rocks[M]. Oxford: Blackwell, 1985: 1-312.
[35]	SUN S, MCDONOUGH W. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes[M]//SAUNDERS A, NORRY M. Magmatism in the Ocean Basin. London: Geological Society of London, 1989, 42:313-345.
[36]	GRAUCH R I. Rare earth elements in metamorphic rocks[M]//LIPIN B R, MCKAY G A. Geochemistry and Mineralogy of Rare Earth Elements. Washington D C: Mineralogical Society of American, 1989: 147-167.
[37]	BERNAR-GRIFFITHS J, CORNICHET J. Origin of eclogites from south Brittany, France: A Sm-Nd isotopic and REE study[J]. Chemical Geology, 1985, 52(2):185-201.
[38]	SHATSKY V S, KOZMENKO O A, SOBOLEV N V. Behavior of rare earth elements during high-pressure metamorphism[J]. Lithos, 1990, 25:219-226. DOI URL
[39]	HAJASH J A. Rare earth element abundance and distribution patterns in hydrothermal altered basalts: experimental results[J]. Contributions to Mineralogy and Petrology, 1984, 85:409-412. DOI URL
[40]	BECKER H, JOCHUM K P, CARLSON R W. Constraints from highpressure veins in eclogites on the composition of hydrous fluids in subduction zones[J]. Chemical Geology, 1999, 160: 291-308. DOI URL
[41]	WINCHESTER J A, FLODY P A. Geochmical magma type discrimination: application to alterted and metamophosed basic ignous rocks[J]. Earth and Planetary Science Letters, 1977, 28:459-469. DOI URL
[42]	侯增谦, 莫宣学, 朱勤文, 等. “三江”古特提斯地幔热柱-洋中脊玄武岩证据[J]. 地球学报, 1996, 17(4): 362-375.
[43]	GLASSILY W. Geochemistry and tectonics of the Crescent volcanic rocks, Olympic Peninsula, Washington[J]. Geological Society of America Bulletin, 1974, 85:785-794. DOI URL
[44]	陈松永, 杨经绥, 罗立强, 等. 西藏拉萨地块MORB型榴辉岩的岩石地球化学特征[J]. 地质通报, 2007, 26(10): 1327-1339.
[45]	PEARCEJA. Trace element characteristics of lavas from destructive plate boundaries[M]//THORPE R S.Andesites: Orogenic Andesites and Related Rocks. Chichester: Wiley, 1982: 525-548.
[46]	SHERVAIS J W. Ti-V plots and the petrogenesis of modern and ophiolitic lavas[J]. Earth and Planetary Science Letters, 1982, 59:101-118. DOI URL
[47]	CONDIE K C. Geochemical changes in basalts and andesites across the Archaean-Proterozoic boundary: identification and significance[J]. Lithos, 1989, 23:1-18. DOI URL
[48]	DOUBLEDAY P A, LEAT P T, ALABASTER T, et al. Allochthonous oceanic basalts within the Mesozoic accretionary complex of Alexander Island,Antarctica:Remnants of Proto-Pacific oceanic crust[J]. Journal of the Geological Society of London, 1994, 151: 65-78. DOI URL
[49]	汪云亮, 张成江, 俢淑芝. 玄武岩类形成的大地构造环境的Th/Hf-Ta/Hf图解判别[J]. 岩石学报, 2001, 17(3):413-421.
[50]	SCHILLING J G, ZAJAC M, EVANS R, et al. Petrological and geochemical variations along the Mid-Atlantic ridge from 29°N to 73°N[J]. American Journal of Science, 1983, 283(6):510-586. DOI URL
[51]	郭安林, 张国伟, 孙延贵, 等. 阿尼玛卿蛇绿岩带OIB和MORB的地球化学及空间分布特征: 玛积雪山古洋脊热点构造证据[J]. 中国科学(D辑), 2006, 36 (7): 618-629.
[52]	ZINDLER A, STAUDIGEL H, BATIZA R. Isotope and trace element geochemistry of young Pacific seamounts:Implications for the scale of upper mantle heterogeneity[J]. Earth and Planetary Science Letters, 1984, 70(5/6): 175-195. DOI URL
[53]	DONNELLYA K E, GOLDSTEIN S L, LANGMUIR C H, et al. Origin of enriched ocean ridge basalts and implications for mantle dynamics[J]. Earth and Planetary Science Letters, 2004, 226: 347-366. DOI URL
[54]	郑碧海, 朱文斌, 舒良树, 等. 阿克苏前寒武纪蓝片岩原岩产出的大地构造背景[J]. 岩石学报, 2008, 24(12): 2839-2848.
[55]	WOOD D A. The application of a Th-Hf-Ta diagram to problems of teleonomag-matic classification and to establishing the nature of crystal contamination of basaltic lavas of the British Tertiaty Volcanic Province[J]. Earth and Planetary Science Letters, 1980, 50(5/6):11-30. DOI URL
[56]	赖绍聪, 秦江锋. 青藏高原双湖地区二叠系玄武岩地球化学及其大地构造意义[J]. 地学前缘, 2009, 16(2): 70-78.
[57]	赖绍聪, 秦江峰, 李学军, 等. 昌宁-孟连缝合带干龙塘-弄巴蛇绿岩地球化学及Sr-Nd-Pb同位素组成研究[J]. 岩石学报, 2010, 26(11): 3195-3205.
[58]	赖绍聪, 秦江峰, 李学军, 等. 昌宁-孟连缝合带乌木龙-铜厂街洋岛型火山岩地球化学特征及其大地构造意义[J]. 地学前缘, 2010, 17(3): 44-52.
[59]	王保弟, 王立全, 潘桂棠, 等. 昌宁-孟连结合带南汀河早古生代辉长岩锆石年代学及地质意义[J]. 科学通报, 2013, 58(4): 344-354.
[60]	李才, 翟庆国, 陈文, 等. 青藏高原羌塘中部榴辉岩Ar-Ar定年[J]. 岩石学报, 2006, 22(12):2843-2849.

样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	TFeO	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	烧失量	总量
D1549-2-1	50.04	1.83	14.34	2.07	10.30	0.22	7.52	9.35	3.31	0.84	0.18	3.09	100.00
D1549-4-1	47.55	1.77	15.28	3.16	9.27	0.21	5.25	14.78	2.19	0.10	0.21	1.42	99.77
D1549-4-2	47.75	1.50	15.58	3.36	9.35	0.22	5.37	13.83	2.45	0.19	0.21	1.10	99.81
D1552-1-3	47.77	1.39	15.34	2.99	8.30	0.15	5.32	15.62	2.47	0.19	0.12	1.30	99.66
D1552-1-5	50.40	3.36	13.70	2.89	11.27	0.51	5.86	7.47	3.55	0.46	0.54	0.44	100.01
D1502-9-1	47.22	3.31	14.76	4.28	10.76	0.24	5.82	9.42	2.90	0.63	0.62	2.08	99.96
D1502-9-3	47.83	3.30	14.84	4.27	10.32	0.21	6.37	8.37	3.20	0.58	0.62	2.02	99.91
D1552-1-1	48.90	3.95	14.43	4.39	10.57	0.26	4.35	8.88	3.15	0.50	0.61	0.43	99.99
样品号	Zr	Zn	V	Th	Sc	Sr	Rb	Ni	Nb	Cu	Cr	Co	Ba
D1549-2-1	128.0	89.3	297	1.97	60.5	199	29.10	67.5	6.26	19.9	190	47.9	239.0
D1549-4-1	121.0	132.0	256	0.94	55.3	986	1.76	49.3	8.54	87.8	116	41.1	13.2
D1549-4-2	99.4	90.4	258	1.40	55.0	480	5.76	161.0	4.77	40.9	399	46.6	46.4
D1552-1-3	80.4	53.2	251	0.84	60.0	454	2.36	63.6	6.66	42.8	139	39.3	14.8
D1552-1-5	176.0	159.0	310	4.36	33.5	134	13.30	80.8	48.10	46.1	158	40.3	95.6
D1502-9-1	169.0	81.4	320	3.07	36.6	506	18.60	84.8	26.40	78.6	108	53.2	2 080.0
D1502-9-3	164.0	92.2	319	3.21	36.6	401	19.10	91.7	25.50	114.0	107	58.2	770.0
D1552-1-1	263.0	103.0	340	5.32	37.1	169	17.50	49.5	31.70	111.0	128	40.9	124.0
样品号	Hf	Ta	U	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho
D1549-2-1	3.43	0.38	0.44	7.73	21.2	2.78	14.0	4.24	1.67	4.73	0.96	6.66	1.44
D1549-4-1	3.11	0.48	0.55	6.95	19.2	2.62	13.7	4.24	1.50	4.74	0.99	7.00	1.56
D1549-4-2	2.65	0.27	0.58	5.49	15.5	2.19	11.5	3.70	1.39	4.14	0.89	6.31	1.40
D1552-1-3	2.18	0.38	1.10	5.74	15.0	2.04	10.5	3.34	1.30	3.80	0.80	5.62	1.20
D1552-1-5	4.39	1.47	1.26	27.5	68.9	8.20	37.4	8.59	2.88	7.73	1.24	7.31	1.39
D1502-9-1	4.14	1.40	0.78	29.2	71.6	8.25	36.2	7.20	2.74	6.30	1.00	5.84	1.11
D1502-9-3	4.06	1.41	0.85	30.7	74.3	8.73	39.4	8.04	3.20	7.03	1.07	6.00	1.14
D1552-1-1	6.55	1.81	1.37	31.3	78.2	9.39	42.7	9.61	3.35	8.87	1.44	8.15	1.54
样品号	Er	Tm	Yb	Lu	Y	ΣREE	LREE	HREE	LREE/ HREE	(La/Yb)_N	(La/Sm)_N	(Gd/Yb)_N	δEu
D1549-2-1	3.87	0.62	4.01	0.55	33.0	107.46	51.62	55.84	0.92	1.27	1.11	0.94	1.15
D1549-4-1	4.28	0.69	4.54	0.64	37.0	109.65	48.21	61.44	0.78	1.01	1.00	0.84	1.03
D1549-4-2	3.84	0.63	4.10	0.57	32.4	94.05	39.77	54.28	0.73	0.88	0.90	0.81	1.10
D1552-1-3	3.23	0.5	3.27	0.46	28.4	85.20	37.92	47.28	0.80	1.16	1.05	0.93	1.12
D1552-1-5	3.56	0.52	3.21	0.44	32.2	211.07	153.47	57.60	2.66	5.64	1.95	1.93	1.07
D1502-9-1	2.82	0.40	2.57	0.36	25.2	200.79	155.19	45.60	3.40	7.50	2.47	1.97	1.22
D1502-9-3	2.86	0.40	2.60	0.36	26.0	211.83	164.37	47.46	3.46	7.81	2.32	2.17	1.28
D1552-1-1	3.86	0.55	3.47	0.45	34.5	237.38	174.55	62.83	2.78	5.96	1.98	2.05	1.10

样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	TFeO	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	烧失量	总量
D1549-2-1	50.04	1.83	14.34	2.07	10.30	0.22	7.52	9.35	3.31	0.84	0.18	3.09	100.00
D1549-4-1	47.55	1.77	15.28	3.16	9.27	0.21	5.25	14.78	2.19	0.10	0.21	1.42	99.77
D1549-4-2	47.75	1.50	15.58	3.36	9.35	0.22	5.37	13.83	2.45	0.19	0.21	1.10	99.81
D1552-1-3	47.77	1.39	15.34	2.99	8.30	0.15	5.32	15.62	2.47	0.19	0.12	1.30	99.66
D1552-1-5	50.40	3.36	13.70	2.89	11.27	0.51	5.86	7.47	3.55	0.46	0.54	0.44	100.01
D1502-9-1	47.22	3.31	14.76	4.28	10.76	0.24	5.82	9.42	2.90	0.63	0.62	2.08	99.96
D1502-9-3	47.83	3.30	14.84	4.27	10.32	0.21	6.37	8.37	3.20	0.58	0.62	2.02	99.91
D1552-1-1	48.90	3.95	14.43	4.39	10.57	0.26	4.35	8.88	3.15	0.50	0.61	0.43	99.99
样品号	Zr	Zn	V	Th	Sc	Sr	Rb	Ni	Nb	Cu	Cr	Co	Ba
D1549-2-1	128.0	89.3	297	1.97	60.5	199	29.10	67.5	6.26	19.9	190	47.9	239.0
D1549-4-1	121.0	132.0	256	0.94	55.3	986	1.76	49.3	8.54	87.8	116	41.1	13.2
D1549-4-2	99.4	90.4	258	1.40	55.0	480	5.76	161.0	4.77	40.9	399	46.6	46.4
D1552-1-3	80.4	53.2	251	0.84	60.0	454	2.36	63.6	6.66	42.8	139	39.3	14.8
D1552-1-5	176.0	159.0	310	4.36	33.5	134	13.30	80.8	48.10	46.1	158	40.3	95.6
D1502-9-1	169.0	81.4	320	3.07	36.6	506	18.60	84.8	26.40	78.6	108	53.2	2 080.0
D1502-9-3	164.0	92.2	319	3.21	36.6	401	19.10	91.7	25.50	114.0	107	58.2	770.0
D1552-1-1	263.0	103.0	340	5.32	37.1	169	17.50	49.5	31.70	111.0	128	40.9	124.0
样品号	Hf	Ta	U	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho
D1549-2-1	3.43	0.38	0.44	7.73	21.2	2.78	14.0	4.24	1.67	4.73	0.96	6.66	1.44
D1549-4-1	3.11	0.48	0.55	6.95	19.2	2.62	13.7	4.24	1.50	4.74	0.99	7.00	1.56
D1549-4-2	2.65	0.27	0.58	5.49	15.5	2.19	11.5	3.70	1.39	4.14	0.89	6.31	1.40
D1552-1-3	2.18	0.38	1.10	5.74	15.0	2.04	10.5	3.34	1.30	3.80	0.80	5.62	1.20
D1552-1-5	4.39	1.47	1.26	27.5	68.9	8.20	37.4	8.59	2.88	7.73	1.24	7.31	1.39
D1502-9-1	4.14	1.40	0.78	29.2	71.6	8.25	36.2	7.20	2.74	6.30	1.00	5.84	1.11
D1502-9-3	4.06	1.41	0.85	30.7	74.3	8.73	39.4	8.04	3.20	7.03	1.07	6.00	1.14
D1552-1-1	6.55	1.81	1.37	31.3	78.2	9.39	42.7	9.61	3.35	8.87	1.44	8.15	1.54
样品号	Er	Tm	Yb	Lu	Y	ΣREE	LREE	HREE	LREE/ HREE	(La/Yb)_N	(La/Sm)_N	(Gd/Yb)_N	δEu
D1549-2-1	3.87	0.62	4.01	0.55	33.0	107.46	51.62	55.84	0.92	1.27	1.11	0.94	1.15
D1549-4-1	4.28	0.69	4.54	0.64	37.0	109.65	48.21	61.44	0.78	1.01	1.00	0.84	1.03
D1549-4-2	3.84	0.63	4.10	0.57	32.4	94.05	39.77	54.28	0.73	0.88	0.90	0.81	1.10
D1552-1-3	3.23	0.5	3.27	0.46	28.4	85.20	37.92	47.28	0.80	1.16	1.05	0.93	1.12
D1552-1-5	3.56	0.52	3.21	0.44	32.2	211.07	153.47	57.60	2.66	5.64	1.95	1.93	1.07
D1502-9-1	2.82	0.40	2.57	0.36	25.2	200.79	155.19	45.60	3.40	7.50	2.47	1.97	1.22
D1502-9-3	2.86	0.40	2.60	0.36	26.0	211.83	164.37	47.46	3.46	7.81	2.32	2.17	1.28
D1552-1-1	3.86	0.55	3.47	0.45	34.5	237.38	174.55	62.83	2.78	5.96	1.98	2.05	1.10