早三叠世下扬子古海洋地球化学环境的修复过程

左景勋; 童金南; 赵来时; 常德峰; 赵荣军

doi:10.3799/dqkx.2013.044

早三叠世下扬子古海洋地球化学环境的修复过程

doi: 10.3799/dqkx.2013.044

左景勋^{1, 3,},
童金南²,
赵来时^1, ,,
常德峰⁴,
赵荣军³

1.
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
2.
中国地质大学生物地质与环境地质国家重点实验室, 湖北武汉 430074
3.
河南省地质调查院, 河南郑州 450001
4.
山东水利职业学院, 山东日照 276826

基金项目:

地质过程与矿产资源国家重点实验室开放课题 GPMR200903

地质过程与矿产资源国家重点实验室开放课题 MSFGGPMR201310

科技部基础性工作专项 2006FY120300-11

国家自然科学基金项目 40672023

国家自然科学基金项目 41272025

国家自然科学基金项目 40972003

详细信息

作者简介:
左景勋(1963-), 男, 博士, 教授级高工, 主要从事沉积学及矿产勘查工作.E-mail: jxzuo@nigpas.ac.cn

通讯作者:
赵来时, E-mail: lszhao@cug.edu.cn

中图分类号: P67
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- 被引次数: 0
出版历程
- 收稿日期: 2012-07-17
- 刊出日期: 2013-05-15

Geochemical Environment Restoration of the Lower Yangtze Paleocean in the Early Triassic, Southeastern China

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
3.
Henan Institute of Geological Survey, Zhengzhou 450001, China
4.
Shandong Water Polytechnic, Rizhao 276826, China

摘要

摘要: 巢湖平顶山北坡剖面下三叠统岩石化学成分分析表明, SiO₂、Al₂O₃、Fe₂O₃、FeO、MgO、Na₂O、K₂O、TiO₂、P₂O₅及微量元素Ba、V、Be、Nb、Zn、Cu、Ni、Co、Pb主要富集在下三叠统格里斯巴赫(Griesbachian)、迪纳(Dienerian)及斯密斯(Smithian)亚阶中, 形成了8次显著的正异常, 异常的强度、规模由下向上呈下降趋势; 微量元素Sr和常量元素CaO主要富集在下三叠统上部斯帕斯(Spathian)亚阶中, 其含量由下向上呈逐渐增加趋势.前者含量与碳酸盐岩的碳同位素组成(δ¹³C)呈负相关关系, 后者含量与碳酸盐岩的碳同位素组成(δ¹³C)呈正相关关系.海相碳酸盐岩碳同位素组成(δ¹³C)指示初始生产力大小, 同时亦是海洋生态环境改善的指示标志; 负相关表明环境恶化、生物萧条, 正相关表明环境适宜、生物繁盛.据常量元素和微量元素分布异常特点在下三叠统地层中识别出8次地质事件, 其规模及影响强度由早到晚逐渐变小及减弱; 晚二叠世末期及早三叠世初期的火山喷发将各种有害元素大量输向海洋, 导致海水中粘土矿物、微量元素含量异常增高, 海洋生态环境恶化.随着时间推移, 火山活动逐渐平息, 海洋中各种有害组分逐渐排除, 海水得到净化, 生态环境渐渐恢复.
- 化学成分 /
- 古海洋 /
- 早三叠世 /
- 下扬子地区 /
- 沉积物 /
- 地球化学
Abstract: Results of chemical analysis on rock samples collected from the north Pingdingshan Section, Chaohu, Anhui Province, Southeastern China, suggest that main elements of SiO₂, Al₂O₃, Fe₂O₃, FeO, MgO, Na₂O, K₂O, TiO₂, P₂O₅ and trace elements of Ba, V, Be, Nb, Zn, Cu, Ni, Co, Pb are rich in the Griesbachian, the Dienerian, as well as in the Smithian Subseries in the Lower Triassic. Eight distinct positive anomalies have been identified in the Lower Triassic on the basis of results of main and trace elements mentioned above. In ascending order, strength, size of anomalies and content of these elements in the Lower Triassic decrease gradually. In contrast to these elements, Sr and CaO are relatively concentrated in the Spathian subseries in the uppermost part of the Lower Triassic. Furthermore, trace element of Sr and main element of CaO enrich gradually up the north Pindingshan Section. Content of the former elements has negative correlation with δ¹³C values of carbonate, while the content of the later elements is positively related with δ¹³C values of carbonate. Commonly, δ¹³C value is used as an indicator of marine primary production and also used as an indicator to define restoration of marine ecological environment. Negative correlation between element contents and δ¹³C values indicates that the deteriorating marine environment is the tremendous disaster to the Early Triassic marine fauna in the Lower Yangtze region, while the positive correlation between element contents and δ¹³C values present that the feasible marine environment to the Early Triassic fauna. Eight marine geo-events have been identified in the Early Triassic based on the pronounced anomalies of trace elements and main elements. Strength of these events became weaker and weaker from the early Early Triassic to the late Early Triassic. A plenty of trace elements from the terrestrial volcano eruptions fluxed into the sea during the Late Permian and the Early Triassic, resulting in high content of argillaceous minerals and high grade of trace elements which led to paleocean environment deteriorating. Marine environment recovered as soon as the superfluous trace elements and argillaceous minerals deposited on the sea floor after volcano activities ceased.
- chemical composition /
- paleocean /
- Early Triassic /
- Lower Yangtze region /
- sediments /
- geochemistry

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图 1 下扬子地区早三叠世岩相古地理(据冯增昭等, 1997修编)

Fig. 1. Palaeogeography of the Lower Yangtze area in the Early Triassic

下载: 全尺寸图片幻灯片

图 2 巢湖平顶山北坡剖面下三叠统常量元素之间的相关性

Fig. 2. Relationship between Al₂O₃, K₂O, MgO and TiO₂ in the north Pingdingshan Section, Chaohu

下载: 全尺寸图片幻灯片

图 3 巢湖平顶山北坡剖面Mg/Ca和Sr/Ca分布

a.下三叠统沉积岩；b.下三叠统粘土岩、泥岩；c.下三叠统灰岩、泥灰岩

Fig. 3. Ratios of Mg/Ca vs Sr/Ca of the Lower Triassic in the north Pingdingshan Section, Chaohu

下载: 全尺寸图片幻灯片

图 4 平顶山北坡剖面下三叠统常量元素、微量元素分布特征和早三叠世地质事件分布

Fig. 4. Distribution of main and trace elements in the Lower Triassic and geo-events identified in the north Pingdingshan Section, Chaohu, Anhui Province

下载: 全尺寸图片幻灯片

表 1 巢湖平顶山北坡剖面下三叠统常量元素分析结果(%)

Table 1. Data of main elements of the Lower Triassic in the north Pingdingshan Section, Chaohu, Anhui Province (%)

层位	样号	岩性	SiO₂	Al₂O₃	Fe₂O₃	FeO	MgO	CaO	Na₂O	K₂O	MnO	TiO₂	P₂O₅	Lost
斯帕斯亚阶	ACP-69	灰岩	2.49	0.59	0.05	0.17	0.05	53.80	0.09	0.02	0.03	0.02	0.01	42.53
	ACP-68	灰岩	2.62	0.74	0.01	0.27	0.13	53.59	0.12	0.04	0.02	0.06	0.01	42.35
	ACP-67	灰岩	2.08	0.60	0.01	0.23	0.03	54.07	0.06	0.03	0.01	0.02	0.01	42.80
	ACP-66	灰岩	1.56	0.55	0.01	0.07	0.01	54.70	0.07	0.01	0.01	0.03	0.01	42.85
	ACP-65	灰岩	4.15	0.94	0.10	0.15	0.11	52.31	0.12	0.05	0.02	0.04	0.02	41.83
	ACP-64	灰岩	7.15	2.14	0.48	0.25	0.25	49.50	0.08	0.28	0.05	0.10	0.02	39.55
	ACP-62-2	灰岩	4.64	1.26	0.24	0.20	0.22	51.77	0.15	0.12	0.02	0.05	0.02	41.18
	ACP-61	灰岩	7.56	2.17	0.30	0.40	0.32	48.86	0.17	0.28	0.02	0.09	0.03	39.65
斯密斯亚阶	ACP-60	灰岩	12.24	3.29	1.14	0.32	0.41	44.89	0.17	0.49	0.05	0.15	0.05	36.68
	ACP-59	泥灰岩	18.77	6.07	2.66	0.45	0.89	37.40	0.19	1.14	0.07	0.43	0.07	31.73
	ACP-58	灰岩	11.27	3.21	0.50	0.57	0.35	45.85	0.23	0.41	0.08	0.16	0.04	37.20
	ACP-57	灰岩	14.76	3.82	0.92	0.50	0.53	42.79	0.34	0.57	0.10	0.18	0.06	35.28
	ACP-56-1	灰岩	15.29	3.83	1.25	0.45	0.48	42.36	0.46	0.58	0.13	0.17	0.07	34.78
	ACP-55-1	灰岩	14.46	3.05	1.20	0.38	0.34	43.57	0.40	0.37	0.26	0.14	0.09	35.60
	ACP-54-2	灰岩	12.61	2.75	0.69	0.67	0.42	45.00	0.34	0.39	0.13	0.12	0.04	36.70
	ACP-53-2	灰岩	10.31	2.46	1.19	0.45	0.40	46.32	0.31	0.28	0.09	0.11	0.05	37.88
	ACP-52-2	灰岩	48.84	14.43	4.21	0.98	1.83	11.58	0.67	2.98	0.04	0.67	0.12	13.50
	ACP-51-2	灰岩	12.55	3.07	0.50	0.43	0.41	45.26	0.42	0.39	0.07	0.17	0.06	36.53
	ACP-50-4	灰岩	9.86	2.39	0.34	0.42	0.33	47.22	0.39	0.26	0.06	0.11	0.06	38.43
	ACP-49-5	灰岩	21.30	5.51	3.19	0.45	0.84	35.77	0.41	0.92	0.15	0.26	0.08	30.98
	ACP-48-3	灰岩	12.58	3.53	0.42	0.45	0.53	44.89	0.44	0.57	0.08	0.14	0.06	36.18
	ACP-47-4	瘤灰岩	15.19	4.10	0.60	0.57	0.59	42.77	0.51	0.67	0.08	0.19	0.07	34.53
	ACP-46-3	瘤灰岩	17.36	3.64	1.01	0.37	0.61	41.65	0.74	0.52	0.10	0.16	0.06	33.65
迪纳亚阶	ACP-45-2	瘤灰岩	20.44	4.78	0.83	0.50	0.71	38.98	0.63	0.79	0.10	0.20	0.05	31.85
	ACP-44-4	瘤灰岩	20.00	5.08	0.97	0.48	0.73	38.76	0.71	0.83	0.10	0.20	0.06	31.95
	ACP-43-5	瘤灰岩	20.58	4.59	1.48	0.40	0.63	38.84	0.70	0.69	0.08	0.22	0.08	31.60
	ACP-42-4	灰岩	16.96	4.35	0.67	0.42	0.61	41.60	0.67	0.64	0.08	0.17	0.06	33.65
	ACP-41-2	瘤灰岩	17.17	4.45	1.63	0.33	0.65	40.78	0.68	0.69	0.12	0.19	0.08	33.10
	ACP-40-2	瘤灰岩	17.46	4.34	1.66	0.55	2.21	38.58	0.53	0.72	0.15	0.20	0.07	33.38
	ACP-39-2	瘤灰岩	30.63	8.19	3.66	0.35	1.09	28.27	0.63	1.54	0.11	0.40	0.08	24.88
	ACP-38-2	瘤灰岩	16.06	4.04	1.51	0.32	0.52	41.96	0.52	0.60	0.10	0.17	0.07	33.98
	ACP-37-2	瘤灰岩	16.38	4.09	1.41	0.42	0.61	42.78	0.59	0.60	0.12	0.19	0.08	32.60
	ACP-36-2	瘤灰岩	22.00	4.64	1.01	0.40	0.65	38.26	0.67	0.69	0.10	0.19	0.07	31.20
	ACP-35-2	瘤灰岩	16.96	4.26	1.61	0.38	0.53	41.10	0.51	0.65	0.10	0.22	0.07	33.50
	ACP-34	瘤灰岩	20.35	5.30	1.59	0.58	0.68	37.94	0.59	0.92	0.09	0.24	0.08	31.50
	ACP-32	泥岩	62.11	18.38	4.30	0.87	2.11	1.13	0.82	3.76	0.03	0.87	0.16	5.28
	ACP-31	泥岩	60.70	17.61	6.65	0.67	1.90	0.87	0.80	3.44	0.05	0.85	0.16	6.10
	ACP-30	泥岩	44.97	13.01	4.14	0.95	1.36	15.36	0.71	2.58	0.09	0.62	0.13	15.93
	ACP-29	灰岩	15.08	3.73	0.72	0.40	0.46	43.17	0.53	0.54	0.09	0.17	0.06	34.90
	ACP-28	灰岩	15.37	3.76	0.60	0.55	0.47	42.89	0.49	0.56	0.09	0.18	0.07	34.85
	ACP-27	瘤灰岩	16.62	4.45	0.81	0.75	0.53	41.31	0.49	0.63	0.09	0.22	0.07	33.90
格里斯巴赫亚阶	ACP-26	灰岩	15.18	3.72	0.95	0.48	0.51	42.76	0.51	0.55	0.10	0.17	0.06	34.88
	ACP-25	泥岩	61.98	18.06	4.66	0.67	1.89	0.92	0.60	3.46	0.03	0.88	0.13	6.55
	ACP-24	泥岩	61.20	18.25	4.67	0.95	1.91	0.80	0.61	3.68	0.02	0.86	0.13	6.75
	ACP-23	灰岩	18.48	4.28	1.24	0.67	0.65	39.92	0.44	0.68	0.09	0.20	0.06	33.15
	ACP-22	灰岩	22.99	5.64	1.47	0.70	0.78	36.03	0.53	0.96	0.10	0.26	0.06	30.35
	ACP-21	泥岩	61.50	18.32	4.49	1.57	2.00	0.85	0.78	3.72	0.06	0.84	0.12	5.58
	ACP-19	泥岩	61.80	18.12	4.35	1.50	1.94	0.78	0.83	3.77	0.04	0.88	0.14	5.68
	ACP-18	泥岩	50.97	14.98	3.98	1.05	1.59	10.34	0.83	3.06	0.08	0.71	0.11	12.13
	ACP-17	瘤灰岩	33.76	9.55	3.31	1.48	1.21	24.92	0.62	1.87	0.11	0.45	0.08	22.50
	ACP-16	泥岩	60.12	18.56	5.94	0.92	1.80	0.91	0.41	3.72	0.08	0.85	0.11	6.40
	ACP-15	泥岩	61.10	18.55	5.47	0.67	1.81	0.83	0.46	3.62	0.07	0.86	0.10	6.28
	ACP-14	泥灰岩	41.63	11.86	3.46	1.12	1.49	18.22	0.54	2.41	0.08	0.55	0.10	18.38
	ACP-13	泥岩	34.09	8.64	3.09	1.20	0.92	25.94	0.57	1.72	0.10	0.40	0.08	23.08
	ACP-12-2	泥灰岩	31.43	7.45	4.59	0.23	0.79	28.10	0.43	1.46	0.12	0.36	0.09	24.83
	ACP-11	泥灰岩	32.58	5.91	4.21	0.10	0.79	28.86	0.36	1.10	0.16	0.28	0.07	25.43
	ACP-10	泥灰岩	39.22	9.51	3.42	0.38	1.17	22.43	0.50	1.93	0.11	0.45	0.10	20.63
	ACP-09	泥灰岩	40.56	9.60	4.60	0.32	1.08	20.92	0.56	1.90	0.14	0.44	0.08	19.65
	ACP-08	泥灰岩	47.23	12.20	4.95	0.32	1.29	14.68	0.65	2.46	0.17	0.56	0.10	15.25
	ACP-07	泥灰岩	39.96	9.13	4.43	0.63	1.08	21.61	0.44	1.85	0.19	0.42	0.08	20.05
	ACP-06	泥灰岩	44.79	11.25	4.49	0.50	1.21	17.13	0.58	2.37	0.10	0.50	0.09	16.85
	ACP-05	泥灰岩	35.22	6.93	4.16	0.23	2.37	24.81	0.33	1.46	0.23	0.31	0.06	23.70
	ACP-03	泥岩	63.38	18.25	3.55	0.83	1.92	0.83	0.63	3.89	0.02	0.71	0.09	5.70
	ACP-02	白色粘土	63.62	18.75	2.66	0.60	1.70	0.97	0.36	3.69	0.03	0.74	0.06	6.65
	ACP-01	硅质岩	63.07	18.14	3.60	0.83	1.80	0.66	0.41	3.87	0.02	0.53	0.13	6.75

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表 2 巢湖平顶山北坡剖面下三叠统各种元素含量(10^-6)

Table 2. Data of trace elements of the Lower Triassic in the north Pingdingshan Section, Chaohu, Anhui Province (10^-6)

层位	样号	岩性	Sr	Ba	Ni	Co	Cr	V	Cu	Pb	Be	Nb	Zn
斯帕斯亚阶	ACP-69	灰岩	522.00	37.00	15.00	7.20	＜5.00	10.90	6.70	21.30	0.30	5.20	6.00
	ACP-68	灰岩	333.00	37.00	14.00	6.70	＜5.00	10.10	5.80	17.70	0.30	4.90	7.00
	ACP-67	灰岩	462.00	37.00	14.00	6.50	＜5.00	9.40	4.70	23.80	0.30	4.50	6.00
	ACP-66	灰岩	529.00	26.00	15.00	7.80	＜5.00	9.40	5.30	23.80	0.30	5.40	5.00
	ACP-65	灰岩	420.00	103.00	15.00	7.50	＜5.00	12.30	8.10	24.40	0.40	5.90	9.00
	ACP-64	灰岩	247.00	196.00	17.00	8.10	< 5.00	18.20	8.80	19.30	0.50	6.70	17.00
	ACP-62-2	灰岩	267.00	49.00	16.00	7.60	＜5.00	14.10	7.10	20.80	0.40	6.80	10.00
	ACP-61	灰岩	395.00	88.00	17.00	7.30	＜5.00	19.00	9.20	16.90	0.50	6.40	17.00
斯密斯亚阶	ACP-60	灰岩	243.00	97.00	20.00	9.50	5.00	26.30	9.70	22.50	0.70	7.90	23.00
	ACP-59	泥灰岩	186.00	146.00	27.00	12.10	20.60	54.20	20.00	23.70	1.20	12.40	45.00
	ACP-58	灰岩	244.00	140.00	18.00	7.60	＜5.00	25.40	8.80	19.00	0.60	7.30	22.00
	ACP-57	灰岩	260.00	138.00	19.00	8.20	＜5.00	32.10	10.90	28.10	0.90	7.50	33.00
	ACP-56-1	灰岩	237.00	129.00	19.00	7.70	7.00	30.20	16.00	25.50	0.80	8.50	23.00
	ACP-55-1	灰岩	330.00	109.00	24.00	11.60	7.00	30.40	17.40	21.90	0.70	7.60	33.00
	ACP-54-2	灰岩	266.00	88.00	18.00	7.00	＜5.00	25.10	11.50	25.60	0.70	7.30	20.00
	ACP-53-2	灰岩	319.00	89.00	22.00	9.30	＜5.00	35.90	12.70	24.50	0.70	6.30	34.00
	ACP-52-2	灰岩	103.00	344.00	35.00	11.00	58.10	99.90	27.80	22.00	2.30	17.80	88.00
	ACP-51-2	灰岩	244.00	83.00	18.00	7.80	6.40	25.70	9.50	21.60	0.60	8.40	20.00
	ACP-49-5	灰岩	199.00	152.00	31.00	11.80	18.90	43.90	18.50	26.90	1.20	10.10	38.00
	ACP-48-3	灰岩	161.00	75.00	17.00	8.20	6.20	24.90	9.80	20.50	0.70	7.10	19.00
	ACP-47-4	瘤灰岩	200.00	92.00	18.00	8.00	9.20	31.40	15.90	18.00	0.80	9.00	23.00
	ACP-46-3	瘤灰岩	152.00	82.00	19.00	9.20	7.30	27.20	11.70	20.00	0.70	7.80	26.00
迪纳亚阶	ACP-45-2	瘤灰岩	164.00	95.00	18.00	7.60	10.60	33.80	11.80	14.90	0.90	8.00	27.00
	ACP-44-4	瘤灰岩	151.00	105.00	20.00	8.30	14.50	34.90	14.50	21.10	1.00	9.10	38.00
	ACP-43-5	瘤灰岩	127.00	99.00	20.00	9.50	5.60	32.10	16.50	18.80	0.80	7.50	28.00
	ACP-42-4	灰岩	154.00	88.00	17.00	7.30	11.10	29.00	15.40	19.80	0.80	9.10	18.00
	ACP-41-2	瘤灰岩	153.00	101.00	20.00	9.50	15.00	34.90	21.30	25.30	0.90	7.20	29.00
	ACP-40-2	瘤灰岩	137.00	321.00	18.00	8.20	8.60	32.10	10.90	19.50	0.90	9.10	27.00
	ACP-39-2	瘤灰岩	106.00	235.00	28.00	11.40	23.90	57.20	27.50	45.70	1.50	13.10	71.00
	ACP-38-2	瘤灰岩	142.00	95.00	19.00	9.30	10.30	29.70	10.70	19.10	0.80	9.20	28.00
	ACP-37-2	瘤灰岩	149.00	115.00	19.00	8.80	7.90	30.80	17.30	22.00	0.80	8.70	27.00
	ACP-36-2	瘤灰岩	142.00	96.00	18.00	7.70	14.20	31.80	15.60	22.40	0.80	9.50	26.00
	ACP-34	瘤灰岩	130.00	142.00	19.00	8.50	18.40	38.70	15.40	22.00	1.00	9.50	31.00
	ACP-33	泥岩	88.00	381.00	34.00	9.70	80.70	135.80	61.40	15.10	3.00	19.80	81.00
	ACP-32	泥岩	92.00	415.00	43.00	16.60	91.00	160.60	47.80	18.30	3.40	21.00	89.00
	ACP-31	泥岩	83.00	387.00	55.00	23.90	85.50	146.10	60.40	33.60	2.80	21.20	119.00
	ACP-30	泥岩	89.00	314.00	43.00	22.20	48.20	110.70	49.50	28.00	2.00	17.90	89.00
	ACP-29	灰岩	183.00	89.00	16.00	7.10	10.10	27.60	10.80	18.90	0.70	8.60	23.00
	ACP-28	灰岩	183.00	102.00	16.00	7.50	7.80	28.00	11.70	17.60	0.70	7.40	23.00
格里斯巴赫亚阶	ACP-26	灰岩	158.00	85.00	18.00	8.20	9.20	28.80	12.60	19.90	0.70	9.00	27.00
	ACP-25	泥岩	90.00	423.00	35.00	10.70	85.30	122.60	31.60	17.30	3.20	20.90	78.00
	ACP-24	泥岩	97.00	382.00	38.00	11.00	86.50	125.20	61.40	13.10	3.20	20.50	79.00
	ACP-23	灰岩	160.00	96.00	18.00	8.40	17.10	31.20	20.60	28.10	0.80	8.90	34.00
	ACP-22	灰岩	163.00	153.00	22.00	11.40	16.10	41.10	9.60	30.20	1.10	11.10	37.00
	ACP-21	泥岩	102.00	389.00	45.00	18.70	82.70	117.00	14.60	17.40	3.20	21.50	96.00
	ACP-20	泥岩	105.00	351.00	47.00	32.80	87.20	133.80	122.00	56.50	3.30	20.70	96.00
	ACP-19	泥岩	101.00	335.00	41.00	16.70	80.10	120.50	18.70	21.40	3.10	21.70	95.00
	ACP-18	泥岩	108.00	295.00	41.00	20.40	59.00	94.50	15.70	25.50	2.50	18.80	81.00
	ACP-17	瘤灰岩	131.00	202.00	28.00	14.40	34.90	62.70	20.90	37.70	1.60	13.70	67.00
	ACP-16	泥岩	95.00	378.00	45.00	16.30	84.40	114.50	24.10	23.30	3.20	21.50	102.00
	ACP-15	泥岩	105.00	377.00	46.00	15.20	79.30	124.60	105.50	31.40	3.30	21.00	101.00
	ACP-14	泥灰岩	85.00	242.00	28.00	11.60	45.50	74.80	16.60	26.10	2.00	16.10	74.00
	ACP-13	泥岩	71.00	433.00	25.00	11.20	25.00	52.30	19.60	24.60	1.50	12.60	48.00
	ACP-12-2	泥灰岩	55.00	203.00	22.00	10.60	25.20	52.10	23.40	26.60	1.50	12.70	45.00
	ACP-11	泥灰岩	63.00	228.00	20.00	9.20	12.30	41.70	17.10	26.60	1.40	10.60	47.00
	ACP-10	泥灰岩	80.00	328.00	28.00	10.90	32.40	60.20	19.90	27.10	2.00	12.30	66.00
	ACP-09	泥灰岩	72.00	191.00	28.00	12.90	31.70	57.00	19.30	26.60	1.80	14.00	54.00
	ACP-08	泥灰岩	83.00	254.00	32.00	14.30	47.10	73.00	23.90	25.80	2.20	16.50	62.00
	ACP-07	泥灰岩	75.00	234.00	30.00	13.50	33.90	57.80	33.30	23.10	1.80	13.40	52.00
	ACP-06	泥灰岩	77.00	232.00	31.00	16.90	38.20	67.90	38.10	29.00	2.10	15.10	83.00
	ACP-05	泥灰岩	106.00	350.00	31.00	8.60	22.40	104.70	34.20	21.40	3.70	11.20	137.00
	ACP-03	泥岩	73.00	293.00	78.00	14.60	80.80	148.30	70.10	30.00	3.50	25.00	150.00
	ACP-02	粘土层	100.00	347.00	23.00	9.10	70.40	106.10	24.30	34.80	3.20	23.50	70.00
	ACP-01	硅质岩	73.00	289.00	78.00	14.40	109.40	149.40	70.10	48.60	3.50	22.90	151.00

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