Characteristics and attribution of basic volcanic rocks in Liyuan-Labai township area, Yunnan Province
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摘要:
云南西北部爪子—梨园—拉柏乡一线岀露有带状分布的基性火山岩，前人对该套火山岩的归属意见不同。调查研究显示，该套火山岩分布于扬子陆块最西缘，主要由橄榄玄武岩、辉斑玄武岩、火山角砾岩等组成，岩石发育有枕状构造和柱状节理构造，显示出水陆交互的喷发环境；岩石地球化学表现出富碱、低钾、高钛、轻稀土强烈富集、富集大离子亲石元素和高场强元素的特征；该带火山岩总体与云南西北部丽江—宾川地区二叠纪峨眉山玄武岩具有相似的特点，应归属于丽江地层分区的峨眉山玄武岩组。此外，在该套火山岩地层中下部的生物碎屑灰岩夹层中获取了一批生物化石，经鉴定时代为早—中二叠世，说明该套基性火山岩可能形成于早—中二叠世。
Abstract:There are basic volcanic rocks with banded distribution in the Zhuazi-Liyuan-Labai township area of Northwest Yunnan Province.Previous views concerning the attribution of basic volcanic rocks are controversial.According to the investigation and research, the basic volcanic rocks are distributed in the westernmost margin of the Yangtze Block, mainly composed of olivine basalt, pyroxene basalt, volcanic breccia, et. The rocks have pillow structure and columnar joint, showing the eruption environment of water land interaction; the petrological geochemistry shows enriched alkali, low potassium, high titanium, enriched LREE, enriched LILE and enriched HFSE characteristics; the basic volcanic rocks in this area are generally similar to the Permian Emeishan basalt in Lijiang-Binchuan area of northwest Yunnan Province, and belong to the Emeishan basalt formation in Lijiang stratigraphic regionalization.In addition, a number of biological fossils were obtained from the bioclastic limestone intercalations in the middle and lower part of the basic volcanic rocks.The age is identified as Early—Middle Permian, which shows that the basic volcanic rocks were formed in the Early—Middle Permian.
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表 1 梨园—拉柏乡一带基性火山岩主量元素含量
Table 1. Major elements content of basic volcanic rocks in Liyuan-Labai township area
% 采集地 样品编号 室内定名 SiO2 TiO2 Al2O3 Fe2O3 FeO MnO MgO CaO Na2O K2O P2O5 烧失量 总计 Alk σ SI DI m/f 梨园 PM103-13 橄榄玄武岩 47.47 3.05 12.94 4.86 7.52 0.18 6.07 10.30 2.75 1.19 0.32 3.09 99.73 3.94 2.72 27.16 31.53 0.51 PM103-22 玻质玄武岩 49.53 2.99 12.23 12.30 1.42 0.14 4.28 8.90 4.23 1.09 0.29 2.33 99.74 5.32 3.69 18.92 43.98 0.34 PM103-24 凝灰岩 47.70 3.14 13.23 5.84 6.78 0.18 5.81 9.55 2.99 1.13 0.32 3.02 99.69 4.12 2.85 25.91 33.65 0.48 PM103-33 含杏仁橄榄玄武岩 47.60 3.13 13.19 6.29 6.42 0.18 5.82 9.52 2.99 1.19 0.33 3.10 99.77 4.17 2.96 25.85 33.76 0.48 PM103-35 橄斑玄武岩 45.88 2.14 7.53 3.60 9.02 0.18 18.46 7.51 0.98 0.17 0.21 3.75 99.43 1.15 0.29 57.27 9.71 1.51 PM103-36 含杏仁橄榄玄武岩 46.46 3.41 11.93 6.54 6.15 0.19 7.92 9.51 2.24 1.65 0.32 3.30 99.63 3.89 3.08 32.62 29.87 0.66 PM103-40 含玻玄武岩 47.33 3.17 13.19 7.04 5.82 0.18 5.74 9.44 3.04 1.28 0.33 3.21 99.77 4.31 3.27 25.34 34.5 0.47 PM103-45 玻质玄武岩 47.79 3.11 13.01 6.95 5.65 0.17 5.74 9.63 3.05 1.18 0.33 3.20 99.81 4.22 2.92 25.72 34.41 0.48 PM103-54 富玻橄斑玄武岩 47.77 3.17 13.18 5.87 6.78 0.18 5.79 9.57 2.96 1.11 0.32 3.04 99.74 4.06 2.75 25.89 33.58 0.48 PM103-59 玄武质角砾熔岩 47.27 3.19 13.24 5.85 6.98 0.19 5.89 9.60 3.03 1.07 0.34 3.11 99.77 4.10 3.03 25.94 33.13 0.48 PM103-65 含杏仁状玻质玄武岩 44.88 3.76 12.91 6.84 6.85 0.19 6.63 8.99 2.56 2.13 0.44 3.43 99.62 4.68 6.38 26.73 35.63 0.51 PM103-67 富玻玄武岩 47.20 3.20 13.45 5.74 7.05 0.19 5.92 9.66 2.83 1.23 0.33 2.96 99.76 4.05 3.03 26.16 32.23 0.48 PM103-73 玄武岩 47.55 3.17 13.22 5.43 7.23 0.18 5.89 9.76 2.94 1.07 0.33 2.95 99.72 4.01 2.79 26.21 32.68 0.49 PM103-78 富玻玄武岩 45.10 3.91 14.06 6.34 8.13 0.24 5.70 9.13 2.99 0.82 0.51 2.86 99.80 3.81 4.33 23.92 31.15 0.41 D2151 杏仁状含斑玄武岩 48.15 3.01 9.67 4.51 7.10 0.19 11.57 9.34 2.49 0.18 0.29 2.93 99.42 2.67 1.11 44.89 22.95 1.04 爪子 PM107-3 斑状杏仁状玄武岩 45.40 2.73 10.34 4.51 7.10 0.16 10.99 11.50 0.41 2.69 0.27 3.36 99.46 3.10 2.43 42.88 20.14 0.98 PM107-7 少斑玄武岩 47.83 4.02 12.63 6.64 7.27 0.21 4.94 7.46 4.30 0.90 0.44 3.25 99.89 5.20 4.42 20.64 43.17 0.37 D0122 蚀变少斑玄武岩 47.86 3.80 14.10 5.30 6.78 0.15 4.90 9.38 3.09 0.89 0.55 2.30 99.10 3.98 2.61 23.51 35.53 0.42 拉柏乡 PM107-96 含角砾凝灰岩 45.41 1.88 10.06 3.56 7.83 0.17 14.45 9.35 1.54 0.16 0.20 4.77 99.39 1.69 0.64 52.52 14.7 1.31 PM107-102 斑状玄武岩 47.09 3.54 12.53 9.93 4.45 0.21 3.82 9.79 2.42 1.58 0.51 3.79 99.65 4.00 2.77 17.6 35.67 0.29 PM107-107 斑状玄武岩 46.44 4.41 12.89 3.62 11.15 0.15 4.82 7.82 2.78 0.90 0.55 4.30 99.85 3.68 2.66 20.73 33.17 0.33 PM107-113 片理化玄武岩 51.32 1.74 14.29 3.04 6.85 0.14 6.02 7.95 3.17 1.01 0.22 3.95 99.71 4.18 1.8 29.95 38.11 0.63 PM107-123 斑状玄武岩 47.69 4.26 12.57 7.25 7.00 0.19 4.21 7.88 2.87 1.79 0.53 3.23 99.48 4.66 3.55 18.38 40.69 0.31 PM107-125 蚀变斑状玄武岩 47.39 1.85 14.44 4.97 7.33 0.22 5.27 8.05 1.71 3.95 0.23 4.41 99.82 5.66 5.28 22.71 39.64 0.45 PM107-136 杏仁状斑状玄武岩 45.97 1.63 11.10 4.37 6.53 0.16 13.12 8.96 2.21 0.91 0.18 4.39 99.53 3.12 2.01 48.47 25.32 1.25 PM107-143 蚀变杏仁状玄武岩 45.35 1.76 10.58 4.05 6.45 0.16 14.71 8.98 1.79 0.74 0.20 4.82 99.59 2.53 1.46 53.18 20.58 1.46 PM107-147 杏仁状斑状玄武岩 50.44 1.62 12.39 2.60 6.95 0.17 9.22 7.80 3.92 0.96 0.21 3.32 99.60 4.88 2.74 38.99 40.32 0.99 PM107-151 含角砾凝灰岩 46.13 1.81 10.60 3.55 7.05 0.16 13.76 8.57 1.70 1.30 0.23 4.73 99.60 3.00 1.78 50.3 23.27 1.34 PM112-17 辉斑玄武岩 49.59 2.48 14.60 6.69 4.55 0.15 4.32 7.52 3.32 3.35 0.34 2.76 99.66 6.66 5.79 19.61 49.37 0.41 PM112-18 片理化玄武岩 49.02 1.55 12.20 1.87 7.12 0.13 12.09 6.41 3.75 0.05 0.21 5.32 99.73 3.80 1.82 48.59 33.95 1.37 PM112-23 蚀变含斑玄武岩 47.35 2.56 13.28 6.74 4.65 0.16 6.16 8.35 1.66 5.14 0.30 3.06 99.39 6.80 8.09 25.5 44.01 0.57 PM112-27 玄武质火山角砾岩 47.46 4.27 13.54 8.28 6.47 0.15 3.62 5.82 3.45 1.75 0.54 4.20 99.56 5.20 4.34 15.54 45.71 0.26 
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表 2 梨园—拉柏乡一带基性火山岩稀土元素含量
Table 2. REE content of basic volcanic rocks in Liyuan-Labai township area
10-6 采集地 样品编号 室内定名 La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Y ΣREE LREE HREE LR/
HR(La/
Yb)NδEu δCe 梨园 PM103-13 橄榄玄武岩 27.57 58.48 8.55 35.28 7.83 2.40 7.36 1.18 6.44 1.20 3.24 0.45 2.70 0.39 31.12 163.09 140.12 22.96 6.10 7.33 0.95 0.93 PM103-22 玻质玄武岩 27.64 57.17 8.29 34.39 7.78 2.38 7.25 1.13 5.98 1.08 2.81 0.39 2.34 0.33 28.22 158.96 137.64 21.32 6.46 8.48 0.95 0.92 PM103-24 凝灰岩 31.27 66.51 9.47 38.74 8.43 2.62 7.81 1.26 6.59 1.22 3.24 0.44 2.59 0.37 31.05 180.57 157.04 23.52 6.68 8.65 0.97 0.94 PM103-33 含杏仁橄榄玄武岩 31.79 68.91 9.84 39.80 8.68 2.66 8.10 1.28 6.75 1.22 3.21 0.45 2.65 0.38 32.09 185.70 161.67 24.03 6.73 8.62 0.95 0.95 PM103-35 橄斑玄武岩 14.26 32.04 5.04 21.88 5.37 1.67 5.24 0.83 4.38 0.80 2.09 0.28 1.68 0.24 21.21 95.78 80.26 15.52 5.17 6.10 0.95 0.93 PM103-36 含杏仁橄榄玄武岩 20.30 47.20 7.42 32.05 7.65 2.47 7.53 1.17 6.20 1.13 2.96 0.40 2.33 0.33 29.73 139.14 117.09 22.05 5.31 6.24 0.98 0.94 PM103-40 含玻玄武岩 32.05 66.06 9.55 38.46 8.24 2.63 7.79 1.22 6.40 1.18 3.14 0.43 2.56 0.38 31.09 180.09 156.98 23.10 6.79 8.98 0.99 0.92 PM103-45 玻质玄武岩 30.54 64.43 9.27 37.35 8.19 2.49 7.41 1.19 6.33 1.19 3.14 0.42 2.53 0.36 31.29 174.84 152.27 22.57 6.75 8.67 0.96 0.93 PM103-54 富玻橄斑玄武岩 30.86 65.84 9.51 39.09 8.48 2.62 7.91 1.22 6.64 1.20 3.13 0.43 2.65 0.38 31.02 179.96 156.40 23.56 6.64 8.35 0.96 0.93 PM103-59 玄武质角砾熔岩 29.82 63.77 9.30 37.62 8.23 2.46 7.48 1.20 6.34 1.15 3.01 0.41 2.52 0.38 30.14 173.68 151.20 22.48 6.73 8.48 0.94 0.93 PM103-65 含杏仁状玻质玄武岩 51.31 104.09 14.04 54.86 11.04 3.28 9.84 1.49 7.71 1.37 3.58 0.49 2.80 0.40 35.85 266.31 238.62 27.69 8.62 13.12 0.94 0.93 PM103-67 富玻玄武岩 30.17 64.87 9.34 37.82 8.44 2.55 7.73 1.22 6.31 1.17 3.11 0.43 2.55 0.37 30.72 176.08 153.18 22.90 6.69 8.48 0.95 0.94 PM103-73 玄武岩 30.89 66.44 9.50 38.27 8.31 2.62 7.91 1.27 6.65 1.24 3.24 0.45 2.63 0.38 31.10 179.78 156.02 23.76 6.57 8.43 0.97 0.94 PM103-78 富玻玄武岩 39.61 84.24 11.91 48.41 10.61 3.17 9.40 1.48 7.64 1.36 3.65 0.50 3.07 0.44 36.61 225.50 197.95 27.55 7.19 9.25 0.95 0.94 D2151 杏仁状含斑玄武岩 27.67 63.31 8.24 34.85 7.60 2.42 7.64 1.06 6.15 1.04 2.81 0.36 2.09 0.28 27.53 165.50 144.08 21.42 6.73 9.51 0.96 1.02 爪子 PM107-3 斑状杏仁状玄武岩 25.37 54.49 8.07 33.93 7.57 2.26 6.73 1.08 5.77 1.04 2.75 0.36 2.13 0.31 26.67 151.85 131.69 20.16 6.53 8.56 0.95 0.93 PM107-7 少斑玄武岩 40.47 89.61 13.07 53.88 11.87 3.47 11.05 1.66 8.80 1.60 4.17 0.57 3.29 0.48 40.60 243.99 212.36 31.63 6.71 8.81 0.91 0.95 D0122 蚀变少斑玄武岩 46.28 102.06 12.83 54.69 11.66 3.64 11.41 1.62 8.93 1.58 4.13 0.55 3.29 0.42 44.06 263.12 231.17 31.94 7.24 10.10 0.95 1.01 拉柏乡 PM107-96 含角砾凝灰岩 19.96 41.31 6.02 24.02 5.24 1.56 4.79 0.77 4.24 0.77 1.94 0.26 1.55 0.18 20.22 112.62 98.12 14.50 6.77 9.25 0.93 0.91 PM107-102 斑状玄武岩 55.24 114.02 14.92 56.43 10.63 2.80 9.04 1.42 7.57 1.45 3.93 0.57 3.38 0.50 38.76 281.89 254.03 27.85 9.12 11.72 0.85 0.96 PM107-107 斑状玄武岩 58.54 121.23 16.44 65.20 13.35 3.54 12.04 1.85 10.07 1.81 4.74 0.66 3.87 0.52 48.77 313.85 278.30 35.56 7.83 10.85 0.84 0.94 PM107-113 片理化玄武岩 24.05 47.79 6.56 26.69 6.13 1.72 5.67 0.95 5.37 1.01 2.74 0.38 2.36 0.35 26.58 131.77 112.93 18.84 5.99 7.31 0.87 0.92 PM107-123 斑状玄武岩 54.76 114.41 15.73 60.96 12.52 3.47 11.61 1.83 9.67 1.76 4.80 0.69 4.19 0.58 47.55 296.97 261.85 35.13 7.45 9.38 0.86 0.94 PM107-125 蚀变斑状玄武岩 12.59 27.93 4.29 18.80 4.97 1.71 5.51 0.94 5.76 1.12 3.11 0.46 2.89 0.42 29.90 90.49 70.28 20.21 3.48 3.12 0.99 0.93 PM107-136 杏仁状斑状玄武岩 14.97 31.38 4.59 19.43 4.50 1.42 4.39 0.73 4.09 0.74 1.93 0.27 1.58 0.22 19.22 90.23 76.29 13.94 5.47 6.80 0.97 0.92 PM107-143 蚀变杏仁状玄武岩 20.22 42.17 5.99 24.24 5.22 1.54 4.65 0.74 3.94 0.71 1.92 0.26 1.47 0.22 19.30 113.29 99.37 13.91 7.14 9.83 0.94 0.93 PM107-147 杏仁状斑状玄武岩 33.51 62.90 8.16 30.49 6.05 1.60 5.39 0.88 4.87 0.90 2.50 0.35 2.10 0.32 24.65 160.05 142.72 17.33 8.24 11.43 0.84 0.90 PM107-151 含角砾凝灰岩 20.02 41.14 5.87 23.63 5.20 1.47 4.75 0.79 4.27 0.79 2.20 0.31 1.82 0.26 20.80 112.51 97.33 15.18 6.41 7.90 0.89 0.92 PM112-17 辉斑玄武岩 46.32 90.86 11.82 44.35 8.26 2.35 7.42 1.12 6.14 1.12 3.00 0.42 2.54 0.36 28.79 226.07 203.96 22.11 9.23 13.07 0.90 0.93 PM112-18 片理化玄武岩 21.13 42.98 5.96 23.91 5.14 1.43 4.83 0.75 4.13 0.76 1.94 0.29 1.56 0.21 19.75 115.02 100.54 14.48 6.94 9.70 0.86 0.92 PM112-23 蚀变含斑玄武岩 24.84 54.30 7.98 31.88 6.68 2.08 6.27 0.99 5.43 0.99 2.60 0.36 2.23 0.31 25.72 146.96 127.76 19.19 6.66 7.99 0.97 0.94 PM112-27 玄武质火山角砾岩 74.55 149.07 18.91 70.04 13.18 3.52 11.74 1.78 9.33 1.66 4.49 0.61 3.64 0.53 43.55 363.06 329.28 33.79 9.75 14.67 0.85 0.95
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表 3 梨园—拉柏乡一带基性火山岩微量元素含量
Table 3. Trace elements content of basic volcanic rocks in Liyuan-Labai township area
10-6 采集地 样品编号 室内定名 Rb Ba Th U K Nb Ta Pb Sr P Zr Hf Ti Ti/Y Ta/Hf Th/Ta La/Ta 梨园 PM103-13 橄榄玄武岩 22.34 228.38 3.88 0.81 9863.40 25.48 1.64 4.92 501.55 1398.81 227.96 5.29 18264.39 586.88 0.31 2.36 16.79 PM103-22 玻质玄武岩 35.99 147.16 3.33 0.77 9054.58 24.48 1.59 5.26 135.03 1282.84 213.82 5.04 17935.54 635.59 0.32 2.09 17.37 PM103-24 凝灰岩 18.75 468.28 3.80 1.10 9371.95 26.21 1.76 5.07 492.73 1400.96 242.20 5.46 18841.20 606.75 0.32 2.16 17.75 PM103-33 含杏仁橄榄玄武岩 20.28 429.83 3.46 0.99 9858.97 27.36 1.78 4.85 463.50 1458.87 238.56 5.54 18781.83 585.25 0.32 1.94 17.83 PM103-35 橄斑玄武岩 13.12 174.61 1.54 0.60 1408.68 9.72 0.60 3.42 216.11 906.75 148.07 3.44 12843.63 605.60 0.17 2.57 23.84 PM103-36 含杏仁橄榄玄武岩 30.89 843.04 2.17 1.01 13681.51 17.30 1.12 4.31 295.84 1378.53 233.92 5.54 20444.47 687.70 0.20 1.94 18.16 PM103-40 含玻玄武岩 23.66 350.65 3.57 0.98 10584.66 27.42 1.80 5.26 432.99 1441.95 240.08 5.71 18988.64 610.73 0.31 1.99 17.85 PM103-45 玻质玄武岩 20.99 251.18 3.68 1.08 9763.69 27.29 1.86 5.42 431.89 1457.33 243.92 5.71 18639.44 595.74 0.33 1.98 16.43 PM103-54 富玻橄斑玄武岩 19.37 366.09 3.51 1.03 9199.64 24.96 1.53 5.24 408.75 1413.40 237.55 5.54 19008.54 612.72 0.28 2.29 20.16 PM103-59 玄武质角砾熔岩 20.66 406.69 3.74 1.04 8868.67 28.27 1.86 5.19 425.64 1463.75 245.63 5.80 19152.63 635.44 0.32 2.01 16.05 PM103-65 含杏仁状玻质玄武岩 54.00 412.65 5.34 1.44 17645.16 38.29 2.22 7.35 370.46 1932.24 316.23 6.89 22559.22 629.32 0.32 2.41 23.17 PM103-67 富玻玄武岩 21.09 575.83 3.51 1.14 10199.02 24.40 1.53 5.45 503.66 1458.88 242.50 5.63 19211.65 625.40 0.27 2.30 19.78 PM103-73 玄武岩 18.56 490.30 3.44 1.06 8905.25 27.01 1.70 5.66 464.72 1434.59 246.95 5.71 18981.29 610.30 0.30 2.02 18.20 PM103-78 富玻玄武岩 14.84 270.75 3.70 1.04 6785.10 37.89 2.31 4.69 405.05 2211.38 295.32 6.72 23445.75 640.39 0.34 1.60 17.18 D2151 杏仁状含斑玄武岩 2.70 66.81 3.19 0.80 1461.03 26.87 1.78 3.42 207.30 1278.83 227.24 5.82 18014.98 654.34 0.31 1.79 15.51 爪子 PM107-3 斑状杏仁状玄武岩 67.10 119.23 2.52 0.72 22310.02 20.89 1.43 4.87 66.71 1196.72 206.34 4.45 16363.51 613.56 0.32 1.76 17.76 PM107-7 少斑玄武岩 18.39 125.97 6.21 1.30 7463.77 29.26 1.75 5.81 231.33 1941.14 328.05 7.39 24071.94 592.87 0.24 3.55 23.11 D0122 蚀变少斑玄武岩 17.12 364.28 5.56 1.66 7413.06 46.85 2.88 4.88 570.49 2417.99 360.14 8.94 22757.02 516.49 0.32 1.93 16.05 拉柏乡 PM107-96 含角砾凝灰岩 3.62 99.17 2.79 0.66 1289.58 16.68 1.05 4.85 377.98 885.42 141.80 3.36 11299.79 558.90 0.31 2.66 18.99 PM107-102 斑状玄武岩 48.56 521.92 7.23 1.68 13123.94 38.67 2.14 8.11 534.51 2228.49 362.69 7.90 21218.03 547.43 0.27 3.38 25.81 PM107-107 斑状玄武岩 18.00 214.59 6.36 1.69 7502.29 30.32 1.85 6.93 199.33 2417.64 409.05 8.99 26467.12 542.69 0.21 3.45 31.71 PM107-113 片理化玄武岩 28.47 245.48 4.18 1.29 8393.45 14.62 0.90 5.44 258.36 980.09 141.00 3.28 10453.08 393.25 0.27 4.67 26.87 PM107-123 斑状玄武岩 48.85 432.91 6.39 1.72 14872.67 35.16 1.97 6.50 495.92 2320.81 388.24 8.40 25509.14 536.42 0.23 3.24 27.81 PM107-125 蚀变斑状玄武岩 76.47 582.78 1.89 0.41 32761.39 11.77 0.69 2.77 115.15 1004.19 115.85 2.44 11105.48 371.48 0.28 2.75 18.33 PM107-136 杏仁状斑状玄武岩 19.58 178.16 1.72 0.37 7546.10 13.91 0.76 3.86 145.30 803.28 110.80 2.77 9758.61 507.79 0.27 2.26 19.75 PM107-143 蚀变杏仁状玄武岩 14.42 193.40 2.11 0.49 6111.83 15.65 1.05 3.87 199.54 874.24 133.62 3.30 10544.12 546.43 0.32 2.01 19.22 PM107-147 杏仁状斑状玄武岩 18.47 208.77 4.84 1.18 7953.27 21.20 1.01 5.66 169.71 929.69 213.72 5.21 9696.29 393.36 0.19 4.80 33.28 PM107-151 含角砾凝灰岩 28.30 187.53 2.95 0.64 10752.23 18.36 1.13 3.77 170.47 1016.87 152.81 3.61 10845.34 521.50 0.31 2.61 17.76 PM112-17 辉斑玄武岩 76.65 491.89 5.81 1.32 27778.08 25.06 1.22 11.25 1927.12 1488.53 251.19 5.54 14848.53 515.80 0.22 4.75 37.88 PM112-18 片理化玄武岩 2.33 98.42 2.09 0.50 428.49 10.13 0.66 3.85 96.50 931.62 142.31 3.61 9283.25 470.10 0.18 3.17 32.01 PM112-23 蚀变含斑玄武岩 62.53 1252.43 2.78 0.67 42651.24 24.94 1.41 7.04 1613.54 1324.22 198.97 3.95 15341.16 596.50 0.36 1.97 17.67 PM112-27 玄武质火山角砾岩 48.93 394.87 8.71 2.12 14522.25 41.40 2.44 11.93 456.64 2366.84 373.20 7.90 25615.23 588.13 0.31 3.58 30.60
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