湘西地区下寒武统牛蹄塘组页岩沉积环境与有机质富集

祝庆敏; 卢龙飞; 潘安阳; 陶金雨; 丁江辉; 刘旺威; 黎茂稳

doi:10.11781/sysydz202105797

湘西地区下寒武统牛蹄塘组页岩沉积环境与有机质富集

doi: 10.11781/sysydz202105797

祝庆敏^{1, 2, 3,},
卢龙飞^{1, 2, 3},
潘安阳^{1, 2, 3},
陶金雨^{1, 2, 3},
丁江辉^{1, 2, 3},
刘旺威^{1, 2, 3},
黎茂稳^{1, 2, 3}

1.
中国石化油气成藏重点实验室, 江苏无锡 214126
2.
页岩油气富集机理与有效开发国家重点实验室, 江苏无锡 214126
3.
中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126

基金项目:

国家自然科学基金企业创新发展联合项目U19B6003-01和面上项目41972164

详细信息

作者简介:
祝庆敏(1992-), 男, 博士, 从事地球化学研究。E-mail: zhuqm2008@163.com

中图分类号: TE121.31
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- 文章访问数: 720
- HTML全文浏览量: 184
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- 被引次数: 0
出版历程
- 收稿日期: 2021-05-20
- 修回日期: 2021-09-01
- 刊出日期: 2021-09-28

Sedimentary environment and organic matter enrichment of the Lower Cambrian Niutitang Formation shale, western Hunan Province, China

ZHU Qingmin^{1, 2, 3
,},
LU Longfei^{1, 2, 3},
PAN Anyang^{1, 2, 3},
TAO Jinyu^{1, 2, 3},
DING Jianghui^{1, 2, 3},
LIU Wangwei^{1, 2, 3},
LI Maowen^{1, 2, 3}

1.
Key Laboratory of Petroleum Accumulation Mechanisms, SINOPEC, Wuxi, Jiangsu 214126, China
2.
State Key Laboratory of Shale Oil and Gas Accumulation Mechanism and Effective Development, Wuxi, Jiangsu 214126, China
3.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China

摘要

摘要: 下寒武统牛蹄塘组是我国中上扬子地区发育的一套极为重要的海相页岩层系。为进一步明确我国南方下寒武统牛蹄塘组页岩有机质的富集环境与条件，以湘西沅陵地区牛蹄塘组页岩为研究对象，开展了岩石学、有机地球化学和元素地球化学分析等系统研究。结果表明：牛蹄塘组富有机质页岩沉积期处于干冷型气候向暖湿型气候转换期，从沉积早期到晚期其生物生产力水平、水体还原程度和热液作用强度表现为低-高-中高的变化趋势。湘西地区牛蹄塘组页岩有机质的富集并非受控于单一因素，而是古气候、生物生产力、水体氧化-还原性质、沉积速率和热液活动等多个要素相互配置与耦合的结果。牛蹄塘组页岩沉积早期水体较浅，整体处于偏氧化环境，初级生产力水平较低，不利于有机质富集；沉积中期早寒武世发生的大规模海侵使水体加深，伴生的上升洋流携带大量营养盐类进入表层水体，促使藻类大量勃发，同时底层水体缺氧和硫化的环境使有机质大量保存；晚期尽管水体氧化程度有所增加，但受华南持续拉张作用的影响，大陆边缘较强的热液活动提供了丰富的营养物质，生产力仍保持较高水平；且具有相对较高的沉积速率，从而使有机质得以快速埋藏、保存和富集。
- 沉积环境 /
- 富集机理 /
- 有机质 /
- 黑色页岩 /
- 牛蹄塘组 /
- 下寒武统 /
- 湘西地区
Abstract: The Lower Cambrian Niutitang Formation shale is an extremely crucial marine source rock developed at the mid-upper Yangtze block of China. To clarify the paleoenvironment and conditions which are responsible for organic matter enrichment of the Niutitang Formation shale in South China, a systematic study of petrology, organic geoche-mistry and elemental geochemistry was carried out by focusing on the Niutitang Formation shale in Yuanling, western Hunan Province. Results showed that the paleoclimate was transforming from dry-cold to warm-wet during deposition of Niutitang Formation. The level of biological productivity, the redox properties of water and the intensity of hydrothermal activity showed a consistent trend of low-high-medium-high from the early to the late stage of deposition. Rather than being controlled by a single factor, the enrichment of organic matter in the Niutitang Formation shale was the result of the mutual configuration and coupling of multiple factors such as paleoclimate, biological productivity, water redox properties, deposition rate and hydrothermal activity. The water was shallow and oxic with a low-level of productivity in the course of deposition of the lower Niutitang Formation, which was not conducive to the enrichment of organic matter. A large-scale of Early Cambrian transgression occurred during deposition of the medium Niutitang Formation, and the associated upwelling carried extensive substances such as nutrients and sulfates entered the surface water, which promoted the blooming of algae. The anoxic-euxinic environment at the bottom water was conducive to the preservation of organic matter. Although the degree of water oxidation increased during deposition of the upper Niutitang Formation, the strong hydrothermal activity triggered by the continuous extension of South China provided rich nutrients, which kept a high-level biological productivity. Meanwhile, the relatively high deposition rate led to organic matter insufficiently degraded, resulting in rapid burial, preservation and enrichment.
- sedimentary environment /
- enrichment mechanism /
- organic matter /
- black shale /
- Niutitang Formation /
- Lower Cambrian /
- western Hunan Province

HTML全文

图 1 中国南方扬子地台震旦纪—寒武纪过渡期古地理

据参考文献[16]修改。

Figure 1. Paleogeographic map of the Yangtze block in South China during Ediacaran-Cambrian transition

下载: 全尺寸图片幻灯片

图 2 湘西地区借母溪剖面下寒武统牛蹄塘组富有机质页岩(样品号JMC-10)电镜照片

a.借母溪剖面牛蹄塘组富硅页岩显微结构；b.富硅质页岩中石英颗粒与有机质(条状和絮状)和片状黏土矿物伴生；c.富有机质页岩中的自形—半自形石英和片状黏土矿物显微结构；d.富有机质页岩中的草莓状黄铁矿；e.富硅页岩中条状有机质，孔隙不发育；f.石英颗粒粒间孔隙中絮状有机质，发育微孔
Q代表石英；Py代表黄铁矿；Lit代表黏土矿物；OM代表有机质

Figure 2. Electron microscopic images of organic-rich shale in Lower Cambrian Niutitang Formation, Jiemuxi profile, western Hunan Province

下载: 全尺寸图片幻灯片

图 3 湘西地区借母溪剖面下寒武统牛蹄塘组页岩PAAS标准化REE配分曲线和PAAS标准化微量元素蛛网图

Figure 3. PAAS-normalized REE patterns and PAAS-normalized multi-element diagrams of organic-rich shale in Niutitang Formation, Jiemuxi profile, western Hunan Province

下载: 全尺寸图片幻灯片

图 4 湘西地区借母溪剖面下寒武统牛蹄塘组页岩物源类型判别图解

Figure 4. Source types of shale from Lower Cambrian Niutitang Formation, Jiemuxi profile, western Hunan Province

下载: 全尺寸图片幻灯片

图 5 湘西地区早寒武世构造背景判别图解

Figure 5. Tectonic discrimination of La-Th-Sc and Th-Co-Zr/10 in the Early Cambrian of western Hunan Province

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图 6 湘西地区下寒武统牛蹄塘组沉积期水体氧化还原指数

Figure 6. Redox index of water body during the sedimentary period of Lower Cambrian Niutitang Formation in western Hunan Province

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图 7 湘西地区下寒武统牛蹄塘组黑色页岩U和Mo富集系数(EF_U—EF_Mo)协变模式

Figure 7. Cross-plots of EF_U vs. EF_Mo for organic-rich shale in Lower Cambrian Niutitang Formation, western Hunan Province

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图 8 湘西地区牛蹄塘组富有机质页岩地球化学指标垂向变化特征

Figure 8. Geochemical characteristics of organic-rich shale in Lower Cambrian Niutitang Formation, western Hunan Province

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图 9 湘西地区牛蹄塘组古生产力指标(a)、氧化还原指标(b-d)、热水作用指标(e)、沉积速率指标(f)与TOC的相关关系

Figure 9. Correlation between TOC and paleo-productivity index (a), redox index (b-d), hydrothermal water interaction index (e) and deposition rate index (f) of Niutitang Formation, western Hunan Province

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表 1 湘西地区借母溪剖面牛蹄塘组样品TOC和主量元素含量

Table 1. TOC and major element contents of Niutitang Formation samples in western Hunan Province

样品号	层段	深度/m	岩性	ω(TOC)/%	主量元素含量/%							CIA
样品号	层段	深度/m	岩性	ω(TOC)/%	Al₂O₃	CaO	Fe₂O₃	K₂O	MgO	Na₂O	TiO₂	CIA
JMX-45	上段	0.7	黑色硅质页岩	5.41	7.49	0.05	9.07	1.91	0.65	0.81	0.43	68.1
JMX-44		2.5	黑色硅质页岩	4.86	8.51	0.04	4.78	1.89	1.36	0.87	0.39	70.5
JMX-43		3.7	黑色硅质页岩	5.95	8.56	0.15	4.34	2.07	1.00	0.94	0.43	67.7
JMX-42		5.7	黑色硅质页岩	7.90	7.91	0.03	1.47	2.20	0.63	0.67	0.46	69.0
JMX-41		7.3	黑色硅质页岩	7.41	6.36	0.10	0.65	1.84	0.47	0.41	0.45	69.0
JMX-40		9.3	黑色硅质页岩	9.40	8.67	0.03	1.61	2.47	0.84	0.71	0.46	69.0
JMX-39		10.5	黑色硅质页岩	7.03	8.16	0.07	3.92	2.34	0.75	0.80	0.41	67.3
JMX-38		12.1	黑色硅质页岩	5.27	7.44	0.26	1.77	2.33	0.50	0.71	0.45	65.3
JMX-37	中段	13.7	黑色中—厚层粉砂岩	4.21	7.22	0.61	0.57	2.31	0.47	0.85	0.40	59.0
JMX-36		15.8	黑色中—厚层粉砂岩	5.51	8.83	0.09	2.71	2.75	0.74	0.71	0.47	67.2
JMX-35		17.8	黑色中—厚层粉砂岩	7.41	7.74	0.02	0.61	1.02	0.27	0.30	0.18	65.3
JMX-34		19.8	黑色薄层状粉砂岩	9.08	6.82	0.08	0.57	2.20	0.48	0.81	0.46	63.9
JMX-33		21.8	黑色中层状泥质粉砂岩	5.52	7.03	0.04	2.72	1.43	1.28	0.17	0.23	78.7
JMX-32		23.3	黑色中层状泥质粉砂岩	9.37	4.59	0.14	0.84	1.43	0.48	0.41	0.27	64.8
JMX-31		25.3	黑色泥质粉砂岩	12.86	4.71	0.18	0.67	1.97	0.29	0.46	0.62	59.4
JMX-30		26.0	黑色薄层炭质粉砂岩	9.54	6.41	0.06	1.52	2.43	0.29	0.96	0.52	59.8
JMX-29		27.5	黑色薄层硅质泥岩	8.88	7.31	0.10	5.92	2.61	0.28	1.27	0.45	58.9
JMX-28		29.5	黑色薄层硅质泥岩	9.30	7.07	0.33	4.22	2.41	0.36	1.26	0.44	57.2
JMX-27		31.5	黑色厚层块状硅质泥岩	7.01	7.41	0.29	6.69	2.39	0.51	1.32	0.43	58.3
JMX-26		33.5	黑色厚层块状硅质岩	6.62	9.65	5.47	4.76	2.99	0.85	1.48	0.57	60.2
JMX-25		34.8	黑色硅质页岩	10.45	11.49	0.06	4.93	3.84	0.90	1.42	0.82	63.5
JMX-24		35.8	黑色硅质页岩	9.52	7.06	0.26	4.17	1.87	2.20	1.06	0.42	62.5
JMX-23		37.8	黑色硅质页岩	10.51	4.58	0.20	2.68	1.38	0.69	0.65	0.22	61.0
JMX-22		39.3	黑色硅质页岩	8.95	4.19	0.23	6.35	1.32	0.51	0.61	0.23	59.6
JMX-21		41.3	黑色硅质页岩	9.34	7.24	0.18	1.75	2.22	0.69	0.96	0.40	62.6
JMX-20		43.3	黑色硅质页岩	12.45	5.13	0.19	2.88	1.77	0.38	0.70	0.31	60.1
JMX-19		45.3	黑色硅质页岩	14.44	5.12	0.22	3.21	1.20	2.26	0.60	0.29	65.6
JMX-18		47.3	黑色中层状硅质岩	11.19	4.60	0.33	4.42	1.18	0.85	0.75	0.26	59.5
JMX-17		48.8	黑色块状硅质岩	10.14	7.70	0.18	2.64	1.85	0.80	0.88	0.36	67.1
JMX-16		49.8	黑色块状硅质岩	9.43	7.49	0.29	2.15	1.98	1.01	0.96	0.38	63.7
JMX-15		51.5	黑色块状硅质岩	9.69	6.55	1.04	2.41	1.73	1.21	0.65	0.33	57.6
JMX-14		52.7	黑色硅质页岩	1.91		43.61	1.35	0.08	2.27	0.04	0.04
JMX-13		54.3	黑色硅质页岩	11.72	5.78	0.27	2.25	1.60	0.69	0.46	0.31	66.0
JMX-12		56.3	黑色硅质页岩	10.59	7.30	1.03	2.84	1.87	0.92	0.80	0.35	58.3
JMX-11		58.3	黑色硅质页岩	11.70	8.86	0.18	4.58	2.63	1.18	0.66	0.44	67.5
JMX-10		59.9	黑色硅质页岩	12.01		0.13	1.63	0.47	0.31	0.04	0.07
JMX-9		61.1	黑色硅质页岩	9.63	10.78	0.38	5.32	3.38	1.10	0.70	0.50	66.2
JMX-8	下段	62.1	黑色硅质页岩	2.53	13.28	0.14	6.58	4.52	1.87	0.43	0.73	69.4
JMX-7		64.2	黑色硅质页岩	0.72	13.61	0.66	8.30	4.27	2.09	0.95	0.86	64.8
JMX-6		65.8	黑色硅质页岩	1.16	12.23	1.17	7.00	3.30	2.66	1.21	0.79	61.3
JMX-5		67.2	黑色硅质页岩	2.24	11.59	0.18	6.42	3.51	2.07	0.90	0.83	67.3
JMX-4		68.8	黑色硅质页岩	1.79	11.73	0.36	8.03	3.50	2.55	0.87	0.81	66.7

下载: 导出CSV

表 2 湘西地区借母溪剖面牛蹄塘组页岩微量元素含量

Table 2. Trace element contents of Niutitang Formation samples in western Hunan Province

样品号	微量元素含量/10^-6													U/Th	V/Cr	Ni/Co
样品号	Ba	Co	Cr	Cu	Ni	Sr	V	Zr	Mo	Sc	Th	Hf	U	U/Th	V/Cr	Ni/Co
JMX-45	1 959.1	5.54	69.0	49.5	41.4	50.0	118.1	82.9	32.3	7.51	6.94	2.20	8.7	1.25	1.71	7.48
JMX-44	4 360.6	9.61	74.5	96.2	79.0	67.9	138.3	76.6	41.9	9.58	8.65	2.11	16.0	1.85	1.86	8.22
JMX-43	2 372.3	7.40	77.8	67.7	46.9	70.4	152.3	88.2	39.4	9.33	9.43	2.36	14.2	1.51	1.96	6.34
JMX-42	3 401.1	2.72	75.4	17.1	20.5	43.6	244.5	95.1	64.6	7.44	7.84	2.56	19.4	2.47	3.24	7.54
JMX-41	3 801.0	1.15	57.1	8.8	13.2	28.9	186.5	96.7	64.8	6.22	8.65	2.60	17.6	2.04	3.27	11.54
JMX-40	6 731.7	0.59	64.6	23.5	8.3	47.3	156.4	95.7	28.3	7.71	9.08	2.55	15.0	1.65	2.42	14.01
JMX-39	5 057.8	10.02	74.9	58.0	30.5	40.5	172.8	91.6	64.2	7.88	10.06	2.48	20.2	2.01	2.31	3.04
JMX-38	8 705.9	2.27	86.5	21.9	21.6	63.5	507.9	96.8	64.8	7.30	9.04	2.58	16.4	1.81	5.87	9.51
JMX-37	6 805.6	0.76	72.8	14.3	15.6	72.5	534.6	81.9	91.8	5.67	7.95	2.24	20.1	2.53	7.35	20.53
JMX-36	9 040.7	0.64	133.0	25.5	20.7	72.4	1 892.0	107.3	146.1	9.45	9.58	2.75	21.3	2.22	14.22	32.50
JMX-35	1 823.1	0.29	36.7	8.2	11.3	21.3	470.2	39.2	48.0	2.93	3.76	1.01	11.9	3.16	12.82	38.85
JMX-34	8 748.1	1.21	55.1	20.4	14.5	38.3	256.3	107.7	109.1	7.33	9.64	2.71	52.8	5.48	4.65	11.96
JMX-33	2 885.9	1.91	258.8	941.7	99.7	47.0	3 471.8	58.0	206.6	6.39	5.29	1.42	85.1	16.10	13.42	52.25
JMX-32	3 250.7	0.56	74.6	144.3	36.0	45.1	516.5	68.8	278.6	8.23	6.02	1.66	181.3	30.11	6.92	63.87
JMX-31	9 362.8	3.42	70.1	15.0	50.6	78.2	234.8	163.7	34.3	6.64	6.52	4.30	48.2	7.39	3.35	14.78
JMX-30	9 229.1	0.83	91.4	19.3	29.5	63.2	350.6	138.9	70.1	7.50	7.36	3.80	53.8	7.31	3.84	35.54
JMX-29	6 630.2	5.97	113.0	39.8	60.8	41.5	250.7	119.8	77.8	7.01	5.54	3.24	29.5	5.32	2.22	10.17
JMX-28	6 520.5	4.40	102.0	40.3	27.0	55.0	144.7	117.6	65.2	7.30	7.06	3.07	29.7	4.21	1.42	6.14
JMX-27	6 244.4	8.75	124.0	48.8	76.2	55.0	419.2	106.1	80.0	9.34	7.15	2.90	55.5	7.75	3.38	8.71
JMX-26	5 476.4	8.49	236.4	76.7	232.6	39.8	2 127.8	139.7	1 496.0	18.48	15.32	3.51	356.3	23.26	9.00	27.38
JMX-25	6 013.1	5.88	510.7	98.5	186.6	68.5	4 949.3	206.5	200.7	13.07	10.23	5.00	74.4	7.27	9.69	31.75
JMX-24	3 813.1	9.39	142.5	43.8	236.0	47.8	865.4	114.2	151.8	7.79	7.34	3.05	129.3	17.61	6.07	25.14
JMX-23	2 941.2	4.11	94.5	33.9	74.0	43.2	595.3	56.2	73.5	6.13	4.64	1.46	52.7	11.37	6.30	18.01
JMX-22	2 803.9	6.72	105.0	48.0	125.5	35.7	279.1	53.1	89.9	4.57	3.49	1.47	52.0	14.89	2.66	18.69
JMX-21	2 616.5	5.44	594.7	253.8	122.4	33.9	3 018.3	105.6	49.8	8.92	5.85	2.75	11.6	1.99	5.08	22.51
JMX-20	3 433.4	5.08	103.6	55.7	73.6	34.5	658.7	85.6	144.7	6.81	6.21	1.84	93.6	15.06	6.36	14.49
JMX-19	2 042.9	14.87	104.0	93.9	274.2	37.0	290.4	79.2	94.0	5.57	5.19	1.94	105.5	20.33	2.79	18.44
JMX-18	2 421.7	6.25	122.6	57.9	80.5	46.9	325.9	67.9	107.6	6.50	3.96	1.59	57.2	14.43	2.66	12.87
JMX-17	1 955.7	11.00	243.3	94.8	236.2	35.9	4 119.9	93.1	83.6	9.19	5.55	2.36	87.4	15.73	16.93	21.47
JMX-16	3 158.6	9.61	242.9	241.1	172.5	50.3	3 271.4	97.8	59.4	8.99	5.85	2.44	32.4	5.53	13.47	17.95
JMX-15	1 793.4	6.98	583.7	507.7	144.6	77.5	2 742.1	89.5	72.1	8.73	5.29	2.18	50.4	9.53	4.70	20.72
JMX-14	2 022.5	15.29	20.2	280.1	191.8	123.6	324.6	14.1	15.9	4.51	0.72	0.27	83.4	115.82	16.06	12.54
JMX-13	1 375.1	5.58	229.3	89.2	187.8	47.5	6 338.8	74.9	146.8	7.63	4.63	1.92	20.5	4.43	27.64	33.63
JMX-12	1 710.3	11.47	542.6	771.5	362.8	63.8	5 708.2	91.9	130.2	8.48	5.49	2.33	50.3	9.15	10.52	31.64
JMX-11	2 816.9	3.28	2 762.0	271.4	105.9	55.4	3 032.6	99.2	55.6	9.34	7.49	2.51	12.1	1.61	1.10	32.24
JMX-10	760.9	3.37	393.6	979.0	167.1	22.5	2 499.8	23.8	40.0	2.40	1.44	0.57	73.2	50.82	6.35	49.60
JMX-9	7 867.3	8.39	251.3	124.3	144.0	50.5	1 372.0	93.6	32.3	11.12	8.82	2.18	38.0	4.30	5.46	17.15
JMX-8	15 946.1	11.74	150.9	53.3	59.0	38.8	141.1	100.9	1.7	12.14	10.75	2.75	3.8	0.35	0.94	5.03
JMX-7	15 767.0	17.62	133.7	90.6	65.4	83.8	111.0	150.0	1.6	13.58	12.25	3.93	3.4	0.28	0.83	3.71
JMX-6	11 984.0	15.25	131.6	226.8	76.8	68.7	140.9	138.4	3.1	12.82	9.91	3.71	7.5	0.76	1.07	5.04
JMX-5	12 819.9	11.72	134.5	52.4	44.9	50.3	107.0	148.7	2.4	11.38	9.77	4.08	3.9	0.40	0.80	3.83
JMX-4	12 549.2	12.29	122.3	49.5	42.6	57.6	124.8	152.4	2.3	13.32	8.83	4.04	2.5	0.28	1.02	3.47

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表 3 湘西地区借母溪剖面牛蹄塘组REE含量

Table 3. Rare earth element contents of Niutitang Formation samples in western Hunan Province

样品号	稀土元素含量/10^-6																(La/Yb)_N	δEu
样品号	Y	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	∑REE	(La/Yb)_N	δEu
JMX-45	9.4	24.0	49.0	5.37	17.6	2.63	0.76	2.49	0.30	1.63	0.33	1.10	0.17	1.17	0.19	106.8	1.52	1.41
JMX-44	14.3	24.8	52.4	6.15	22.5	4.21	1.52	3.99	0.54	2.92	0.55	1.66	0.24	1.55	0.24	123.2	1.18	1.75
JMX-42	11.5	26.0	53.3	6.03	20.2	2.80	1.04	2.78	0.33	1.82	0.39	1.29	0.21	1.43	0.23	117.8		1.76
JMX-41	11.4	21.9	44.3	4.92	16.2	2.17	1.00	2.40	0.30	1.82	0.39	1.32	0.20	1.39	0.23	98.5	1.17	2.06
JMX-40	11.9	23.0	49.0	5.56	19.2	3.07	1.69	2.98	0.36	2.01	0.42	1.30	0.21	1.37	0.21	110.4	1.24	2.63
JMX-39	17.8	24.2	49.4	5.90	21.1	3.76	1.50	3.77	0.52	2.98	0.61	1.85	0.26	1.71	0.26	117.9	1.05	1.87
JMX-38	11.6	18.5	38.0	4.65	16.3	2.56	1.81	2.41	0.30	1.79	0.39	1.29	0.20	1.39	0.22	89.7	0.98	3.43
JMX-37	9.5	17.3	33.4	3.94	13.2	1.83	1.55	2.11	0.23	1.44	0.32	1.11	0.18	1.25	0.20	78.1	1.02	3.71
JMX-36	16.5	24.6	44.5	5.32	17.8	2.56	2.01	2.63	0.34	2.19	0.50	1.73	0.27	1.92	0.31	106.6	0.95	3.65
JMX-35	7.5	11.7	22.3	2.84	9.8	1.36	0.53	1.31	0.16	0.91	0.21	0.74	0.12	0.77	0.13	52.9	1.12	1.87
JMX-34	44.0	34.3	66.8	7.52	27.0	4.08	2.20	4.41	0.63	4.24	1.02	3.42	0.49	2.98	0.47	251.6	0.85	2.44
JMX-33	72.9	16.2	25.8	4.15	18.0	4.31	1.46	5.46	0.87	5.88	1.40	4.45	0.64	4.10	0.66	93.4	0.29	1.42
JMX-31	15.9	34.8	61.5	7.78	26.4	3.11	2.13	3.30	0.38	2.18	0.48	1.60	0.24	1.56	0.24	145.7	0.65	3.13
JMX-30	13.9	23.2	38.8	4.93	16.8	2.26	2.01	2.39	0.30	1.84	0.41	1.36	0.20	1.35	0.22	96.0	1.27	4.08
JMX-29	15.2	25.3	43.8	5.54	19.4	2.39	1.54	2.54	0.33	2.00	0.46	1.53	0.24	1.56	0.24	106.8	1.20	2.95
JMX-28	19.2	24.8	44.8	5.73	20.6	2.89	1.56	2.97	0.41	2.45	0.55	1.76	0.26	1.66	0.26	110.7	1.10	2.50
JMX-27	25.4	24.6	45.4	6.22	24.0	4.59	1.85	4.48	0.62	3.59	0.73	2.27	0.32	2.02	0.31	120.9	0.90	1.92
JMX-25	31.6	34.5	52.6	7.01	23.9	3.27	1.61	3.54	0.52	3.45	0.82	2.75	0.42	2.73	0.43	137.6	0.94	2.23
JMX-24	25.5	16.1	26.9	3.92	15.3	3.05	1.28	3.15	0.49	3.22	0.72	2.24	0.32	1.95	0.29	79.0	0.61	1.95
JMX-23	16.3	19.0	30.3	4.37	16.1	2.61	1.00	2.70	0.35	2.02	0.43	1.30	0.19	1.14	0.17	81.6	1.23	1.77
JMX-22	30.2	18.5	31.7	4.65	19.3	4.38	1.49	5.02	0.68	3.87	0.79	2.22	0.29	1.69	0.26	94.8	0.81	1.50
JMX-21	21.0	13.5	18.7	3.28	12.2	2.19	0.93	2.45	0.38	2.51	0.59	1.94	0.32	2.16	0.36	61.5	0.46	1.89
JMX-20	52.5	26.6	38.8	5.95	21.9	3.88	1.31	4.93	0.83	5.63	1.29	4.08	0.56	3.27	0.50	119.5	0.60	1.41
JMX-19	48.1	26.0	42.7	5.53	22.2	4.71	1.44	5.67	0.91	5.60	1.21	3.53	0.45	2.50	0.35	122.8	0.77	1.31
JMX-18	23.6	22.2	36.2	4.56	17.1	2.96	0.99	3.23	0.45	2.64	0.57	1.76	0.24	1.55	0.23	94.7	1.06	1.51
JMX-17	33.1	19.7	34.1	4.78	19.2	3.99	1.22	4.37	0.68	4.06	0.87	2.76	0.39	2.51	0.38	99.0	0.58	1.37
JMX-16	42.0	24.0	38.9	5.60	22.2	4.77	1.67	5.47	0.83	5.14	1.12	3.43	0.46	2.89	0.43	116.8	0.61	1.54
JMX-15	69.0	27.0	41.8	6.48	26.7	5.72	1.64	6.31	1.01	6.40	1.41	4.46	0.62	3.89	0.58	134.0	0.51	1.28
JMX-14	149.2	23.0	27.8	4.87	23.5	6.39	2.87	8.64	1.33	8.63	2.08	6.53	0.88	5.28	0.79	122.5	0.32	1.82
JMX-13	25.2	21.5	29.5	4.54	16.9	2.76	0.80	3.02	0.43	2.70	0.62	2.05	0.30	2.01	0.31	87.5	0.79	1.30
JMX-12	45.2	32.1	42.8	7.35	29.0	5.70	1.48	6.07	0.89	5.30	1.17	3.68	0.52	3.46	0.52	140.0	0.68	1.19
JMX-11	29.9	40.6	41.9	7.95	25.4	3.10	1.17	3.52	0.48	3.24	0.83	3.04	0.49	3.49	0.56	135.7	0.86	1.66
JMX-10	120.8	6.5	8.0	1.79	8.5	2.91	0.81	5.42	1.08	8.09	1.99	6.33	0.82	4.69	0.67	57.6	0.30	1.20
JMX-9	37.0	42.6	57.2	9.73	36.7	6.66	2.55	5.95	0.84	4.96	1.09	3.45	0.50	3.21	0.48	175.9	0.98	1.91
JMX-8	11.2	25.8	35.4	5.14	16.6	1.99	3.34	2.03	0.25	1.56	0.37	1.28	0.21	1.43	0.22	95.6	1.33	7.83
JMX-7	18.2	45.2	66.1	8.77	29.6	4.91	3.94	4.72	0.56	3.05	0.61	1.90	0.26	1.70	0.25	171.6	1.96	3.85
JMX-6	23.2	37.9	55.2	6.86	23.9	4.17	3.10	4.44	0.62	3.59	0.75	2.33	0.33	2.16	0.33	145.6	1.30	1.21
JMX-5	11.8	26.0	38.1	4.65	15.4	2.33	2.93	2.40	0.32	1.90	0.43	1.41	0.22	1.49	0.23	97.8	1.29	5.83
JMX-4	13.2	43.6	56.3	6.52	19.4	2.23	2.80	2.63	0.31	1.90	0.44	1.61	0.25	1.85	0.29	140.2	1.74	5.45

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