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华北克拉通北缘内蒙古达茂旗地区前寒武纪基底岩石组合及形成时代

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马云飞, 焦建刚, 王猛, 闫馨云, 刘健, 高超, 王静, 李峰, 姚瑞军. 华北克拉通北缘内蒙古达茂旗地区前寒武纪基底岩石组合及形成时代[J]. 地质通报, 2022, 41(4): 559-576. doi: 10.12097/j.issn.1671-2552.2022.04.004
引用本文: 马云飞, 焦建刚, 王猛, 闫馨云, 刘健, 高超, 王静, 李峰, 姚瑞军. 华北克拉通北缘内蒙古达茂旗地区前寒武纪基底岩石组合及形成时代[J]. 地质通报, 2022, 41(4): 559-576. doi: 10.12097/j.issn.1671-2552.2022.04.004
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MA Yunfei, JIAO Jiangang, WANG Meng, YAN Xinyun, LIU Jian, GAO Chao, WANG Jing, LI Feng, YAO Ruijun. Precambrian basement rock assemblage and formation age in Damaoqi area of Inner Mongolia, northern margin of the North China Craton[J]. Geological Bulletin of China, 2022, 41(4): 559-576. doi: 10.12097/j.issn.1671-2552.2022.04.004
Citation: MA Yunfei, JIAO Jiangang, WANG Meng, YAN Xinyun, LIU Jian, GAO Chao, WANG Jing, LI Feng, YAO Ruijun. Precambrian basement rock assemblage and formation age in Damaoqi area of Inner Mongolia, northern margin of the North China Craton[J]. Geological Bulletin of China, 2022, 41(4): 559-576. doi: 10.12097/j.issn.1671-2552.2022.04.004
shu

华北克拉通北缘内蒙古达茂旗地区前寒武纪基底岩石组合及形成时代

  • 1.

    长安大学地球科学与资源学院, 陕西 西安 710054

  • 2.

    西部矿产资源与地质工程教育部重点实验室, 陕西 西安 710054

  • 3.

    西安市关键金属成矿与高效利用重点实验室, 陕西 西安 710054

  • 4.

    中国冶金地质总局西北局, 陕西 西安 710119

  • 5.

    内蒙古自治区地质测绘院, 内蒙古 呼和浩特 010020

  • 基金项目:
    国家自然科学基金项目《甘肃金川岩浆铜镍(铂)硫化物矿床铂族、钴和铬等战略性关键金属富集过程及富集机制》(批准号: 92162213)和内蒙古自治区地质勘查基金项目《内蒙古乌兰陶勒盖-小南山铜镍多金属矿成矿规律研究及找矿预测》(编号: 2020-KY05)
详细信息
    作者简介: 马云飞(1992-), 男, 在读博士生, 地质学专业。E-mail: dizhimyf@163.com
    通讯作者: 焦建刚(1976-), 男, 教授, 博士生导师, 从事矿床学研究与教学。E-mail: jiangang@chd.edu.cn

  • 中图分类号: P534.1;P579+.3

Precambrian basement rock assemblage and formation age in Damaoqi area of Inner Mongolia, northern margin of the North China Craton

  • 1.

    School of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China

  • 2.

    Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, Xi'an 710054, Shaanxi, China

  • 3.

    Xi'an Key Laboratory for Mineralization and Efficient Utilization of Critical Metals, Xi'an 710054, Shaanxi, China

  • 4.

    Northwest Bureau of China Metallurgical Geology Bureau, Xi'an 710119, Shaanxi, China

  • 5.

    Inner Mongolia Geologic Surveying and Mapping Institute, Hohhot 010020, Inner Mongolia, China

More Information

    摘要

  • 在华北克拉通北缘达茂旗地区, 近东西向分布前寒武纪基底, 前人根据岩石组合特征将其划为色尔腾山岩群, 但缺乏年代学依据。通过岩石学、LA-ICP-MS锆石U-Pb年龄及其微量元素地球化学、锆石Lu-Hf同位素等研究对达茂旗地区前寒武纪基底岩石组合、形成时代、物质来源进行讨论。研究表明, 达茂旗地区前寒武纪基底由色尔腾山岩群和古元古代变质侵入岩构成。色尔腾山岩群由黑云斜长片麻岩、大理岩组成, 形成时间为2009~2142 Ma, 属古元古代。古元古代存在2期侵入岩, 分别为1992~1999 Ma、1920 Ma。达茂旗地区在约2.6 Ga、2009~2142 Ma分别发生过陆壳增生作用, 并受到古老陆壳物质混染, 1999~1992 Ma的碱长花岗岩与石英闪长岩为新生陆壳重熔产物, 可能受到古老陆壳物质混染; 1920 Ma的黑云母二长花岗岩为古老陆壳重熔产物。这些认识为进一步研究华北克拉通北缘前寒武纪构造发展演化提供了更多依据。

    Precambrian basement is distributed nearly east-west trending in the Damaoqi area along the northern margin of the North China Craton.Previous studies classified it as the Sertengshan Group based on the characteristics of rock assemblage, but without chronological evidence.This paper discusses the Precambrian basement rock assemblage, formation age and material source in this area, based on petrology, LA-ICP-MS zircon U-Pb age and trace element geochemistry, and zircon Lu-Hf isotope.The research shows that the Precambrian basement is composed of the Sertengshan Group and Paleoproterozoic metamorphic intrusions.The Sertengshan Group is composed of biotite plagiogneiss and marble, formed during 2009~2142 Ma and belongs to the Paleoproterozoic.There are two periods of intrusions in Paleoproterozoic, 1992~1999 Ma and 1920 Ma respectively.In the Damaoqi area, continental crust accretion occurred at ~2.6 Ga and 2009~2142 Ma, respectively.The alkali feldspar granite and quartz diorite formed at 1999~1992 Ma were remelted products of juvenile continental crust, which may be contaminated by ancient continental crust materials.The biotite monzogranite formed at 1920 Ma was the product of the remelting of the ancient continental crust.The results of this study provide more evidences for the Precambrian tectonic evolution of the northern margin of the North China Craton.

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  • 图 1  达茂旗地区大地构造位置(a, 据参考文献[10])及区域地质图(b, 据参考文献①修编)

    Figure 1. 

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    图 图版 Ⅰ   

    Figure 图版 Ⅰ. 

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    图 2  样品中代表性锆石阴极发光(CL)图像

    Figure 2. 

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    图 3  黑云斜长片麻岩锆石U-Pb年龄分布直方图(a)、谐和图(b、c、e、g)及年龄加权平均值图(d、f、h)

    Figure 3. 

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    图 4  碱长花岗岩、石英闪长岩、黑云母二长花岗岩锆石U-Pb年龄谐和图(a、c、e)及年龄加权平均值图(b、d、f)

    Figure 4. 

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    图 5  达茂旗地区前寒武纪基底色尔腾山岩群和变质侵入岩锆石稀土元素配分模式图

    Figure 5. 

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    图 6  达茂旗地区前寒武纪基底锆石Hf同位素特征(a) 及华北克拉通北缘阴山地块中部锆石年龄分布直方图(b)

    Figure 6. 

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    表 1  达茂旗地区前寒武纪基底色尔腾山岩群和变质侵入岩LA-ICP-MS锆石U-Th-Pb定年分析结果

    Table 1.  LA-ICP-MS zircon U-Th-Pb ages of the Precambrian basement Sertengshan Group and Paleoproterozoic metamorphic intrusive rocks in Damaoqi area

    测点 元素含量/10-6 Th/U 同位素比值 U-Pb年龄/Ma
    Th U 207Pb/206Pb 2σ 207Pb/235U 2σ 206Pb/238U 2σ 207Pb/206Pb 2σ 207Pb/235U 2σ 206Pb/238U 2σ
    黑云斜长片麻岩(20WLT-2)
    20WLT-2- 1 313.0 564.9 0.55 0.1889 0.0048 11.8500 0.2700 0.4544 0.0078 2733.0 44.0 2593.6 22.0 2414.0 34.0
    20WLT-2-2 168.0 589.0 0.29 0.1251 0.0032 6.4370 0.1500 0.3726 0.0064 2028.0 45.0 2036.8 21.0 2041.0 30.0
    20WLT-2-3 50.2 191.7 0.26 0.1237 0.0037 5.6900 0.1700 0.3332 0.0074 2006.0 54.0 1927.0 26.0 1853.0 36.0
    20WLT-2-4 683.0 1103.0 0.62 0.1333 0.0034 5.9050 0.1400 0.3217 0.0056 2140.0 45.0 1961.3 20.0 1798.0 27.0
    20WLT-2-5 79.8 147.1 0.54 0.1773 0.0045 12.4100 0.2800 0.5069 0.0083 2624.0 42.0 2634.8 21.0 2643.0 36.0
    20WLT-2-6 368.6 917.0 0.40 0.1254 0.0032 5.3570 0.1200 0.3097 0.0052 2033.0 45.0 1877.5 19.0 1739.0 25.0
    20WLT-2-7 336.7 313.5 1.07 0.1786 0.0045 11.2700 0.2600 0.4560 0.0075 2637.0 43.0 2544.4 21.0 2424.0 32.0
    20WLT-2-8 75.0 169.8 0.44 0.1333 0.0039 7.5400 0.2000 0.4094 0.0076 2138.0 52.0 2176.0 24.0 2212.0 35.0
    20WLT-2-9 855.0 867.0 0.99 0.1260 0.0032 5.0380 0.1400 0.2897 0.0064 2040.0 45.0 1824.0 23.0 1639.0 32.0
    20WLT-2-10 261.6 351.3 0.74 0.1349 0.0035 7.4690 0.1800 0.4011 0.0068 2159.0 45.0 2168.0 21.0 2174.0 31.0
    20WLT-2-11 104.7 632.0 0.17 0.1326 0.0036 7.3100 0.1800 0.3993 0.0075 2131.0 47.0 2150.0 22.0 2165.0 35.0
    20WLT-2-12 368.0 877.0 0.42 0.1255 0.0031 5.6340 0.1300 0.3249 0.0053 2034.5 42.0 1920.3 19.0 1813.0 26.0
    20WLT-2-13 85.5 345.4 0.25 0.1217 0.0035 4.7400 0.1500 0.2837 0.0076 1978.0 51.0 1772.0 26.0 1609.0 38.0
    20WLT-2-14 288.3 405.6 0.71 0.1161 0.0030 5.3010 0.1200 0.3304 0.0053 1894.0 46.0 1868.3 19.0 1840.0 26.0
    20WLT-2-15 136.0 845.0 0.16 0.1189 0.0030 4.5610 0.1000 0.2782 0.0046 1938.0 45.0 1741.7 18.0 1582.0 23.0
    20WLT-2-16 497.0 753.0 0.66 0.1358 0.0034 6.4370 0.1500 0.3438 0.0057 2172.0 44.0 2036.6 20.0 1904.0 28.0
    20WLT-2-17 169.5 274.1 0.62 0.1823 0.0049 12.2900 0.2900 0.4894 0.0091 2671.0 45.0 2626.0 22.0 2567.0 39.0
    20WLT-2-18 84.4 176.5 0.48 0.1250 0.0032 6.4400 0.1500 0.3726 0.0060 2025.0 46.0 2036.4 20.0 2041.0 28.0
    20WLT-2-19 159.3 389.6 0.41 0.1333 0.0034 7.0120 0.1700 0.3828 0.0076 2140.0 45.0 2112.0 22.0 2089.0 36.0
    20WLT-2-20 585.0 527.0 1.11 0.1251 0.0033 6.0100 0.1600 0.3474 0.0063 2027.0 47.0 1976.0 23.0 1922.0 30.0
    20WLT-2-21 364.3 393.7 0.93 0.1342 0.0035 7.1760 0.1700 0.3871 0.0068 2151.0 46.0 2133.0 22.0 2109.0 32.0
    20WLT-2-22 254.2 356.2 0.71 0.1265 0.0033 6.4300 0.1500 0.3685 0.0062 2047.0 45.0 2035.4 21.0 2022.0 29.0
    20WLT-2-23 124.2 543.0 0.23 0.1206 0.0035 5.7400 0.1900 0.3445 0.0096 1963.0 52.0 1936.0 30.0 1908.0 46.0
    20WLT-2-24 195.0 276.1 0.71 0.1241 0.0032 6.2420 0.1600 0.3656 0.0073 2014.0 46.0 2009.0 23.0 2008.0 34.0
    20WLT-2-25 100.8 336.3 0.30 0.1359 0.0035 5.9010 0.1400 0.3158 0.0051 2171.0 45.0 1962.1 21.0 1769.0 25.0
    20WLT-2-26 91.2 121.2 0.75 0.1291 0.0038 6.9000 0.1900 0.3858 0.0075 2082.0 51.0 2097.0 25.0 2103.0 35.0
    20WLT-2-27 21.1 887.0 0.02 0.1167 0.0029 4.4810 0.1100 0.2784 0.0051 1904.0 45.0 1726.0 20.0 1583.0 26.0
    20WLT-2-28 201.2 459.2 0.44 0.1238 0.0034 6.1800 0.1500 0.3615 0.0061 2008.0 48.0 2001.0 21.0 1989.0 29.0
    20WLT-2-29 143.1 392.0 0.37 0.1323 0.0038 7.3200 0.1900 0.4008 0.0078 2126.0 50.0 2151.0 23.0 2178.0 32.0
    20WLT-2-30 54.0 150.2 0.36 0.1232 0.0032 6.3940 0.1500 0.3755 0.0061 2000.0 45.0 2029.9 20.0 2055.0 29.0
    20WLT-2-31 348.1 867.1 0.40 0.1230 0.0027 6.1520 0.1360 0.3609 0.0036 2066.7 38.3 1997.7 19.3 1986.3 17.3
    20WLT-2-32 320.3 492.5 0.65 0.1245 0.0030 5.6435 0.1514 0.3265 0.0034 2021.3 43.7 1922.8 23.1 1821.5 16.3
    20WLT-2-33 282.1 314.8 0.90 0.1243 0.0026 6.3372 0.1419 0.3680 0.0042 2020.4 36.0 2023.6 19.6 2019.8 19.9
    20WLT-2-34 86.3 257.5 0.33 0.1235 0.0027 6.3825 0.1512 0.3732 0.0046 2007.1 43.7 2029.9 20.8 2044.2 21.8
    20WLT-2-35 117.2 526.0 0.22 0.1197 0.0024 5.7277 0.1251 0.3454 0.0038 1951.6 35.3 1935.6 18.9 1912.7 18.2
    20WLT-2-36 404.2 555.4 0.73 0.1780 0.0036 12.2505 0.2854 0.4964 0.0062 2634.3 28.2 2623.8 21.9 2598.2 26.9
    20WLT-2-37 159.1 239.3 0.66 0.1142 0.0028 5.4675 0.1401 0.3460 0.0040 1933.3 44.8 1895.5 22.0 1915.5 19.1
    20WLT-2-38 83.1 109.7 0.76 0.1181 0.0035 5.8507 0.1808 0.3587 0.0049 1927.8 53.7 1954.0 26.8 1976.0 23.2
    碱长花岗岩(1806-7)
    1806-7-1 2002.7 4011.7 0.50 0.1434 0.0074 2.7849 0.2152 0.1360 0.0044 2268.8 89.2 1351.5 57.8 821.9 25.2
    1806-7-2 223.5 1698.3 0.13 0.1179 0.0026 4.3971 0.1036 0.2693 0.0026 1925.0 40.0 1711.8 19.5 1537.5 13.3
    1806-7-3 47.9 1633.1 0.03 0.1175 0.0024 5.2510 0.1179 0.3228 0.0034 1920.4 41.7 1860.9 19.1 1803.2 16.8
    1806-7-4 389.9 1836.8 0.21 0.1231 0.0024 5.6404 0.1532 0.3309 0.0064 2002.2 35.2 1922.3 23.4 1842.9 31.1
    1806-7-5 124.9 1950.4 0.06 0.1223 0.0029 4.5746 0.1120 0.2704 0.0032 1990.4 40.9 1744.6 20.4 1542.8 16.2
    1806-7-6 644.1 3528.9 0.18 0.1154 0.0023 3.2149 0.0888 0.2017 0.0044 1887.0 35.8 1460.8 21.4 1184.6 23.3
    1806-7-7 228.5 1014.5 0.23 0.1241 0.0026 5.3294 0.1666 0.3098 0.0071 2016.7 32.4 1873.6 26.7 1739.7 35.1
    1806-7-8 226.0 711.8 0.32 0.1228 0.0027 6.2438 0.1455 0.3674 0.0042 1998.2 38.9 2010.6 20.4 2017.2 19.9
    1806-7-9 653.5 1122.8 0.58 0.1220 0.0026 6.1087 0.1432 0.3616 0.0046 1987.0 43.1 1991.5 20.5 1989.8 21.6
    1806-7-10 225.7 1246.4 0.18 0.1300 0.0027 6.1742 0.1368 0.3429 0.0039 2098.5 69.0 2000.8 19.4 1900.4 18.8
    1806-7-11 340.2 1187.9 0.29 0.1231 0.0024 6.0412 0.1258 0.3543 0.0033 2066.7 35.5 1981.8 18.1 1955.2 15.9
    石英闪长岩(20WLT-8)
    20WLT-8-1 183.7 416.0 0.44 0.1224 0.0034 6.1130 0.1300 0.3619 0.0054 1989.0 49.0 1991.4 19.0 1992.0 25.0
    20WLT-8-2 50.9 181.6 0.28 0.1295 0.0040 6.7800 0.1800 0.3827 0.0072 2087.0 54.0 2082.0 23.0 2088.0 33.0
    20WLT-8-3 44.4 242.2 0.18 0.1224 0.0037 6.1600 0.1600 0.3611 0.0067 1989.0 54.0 1998.0 23.0 1987.0 32.0
    20WLT-8-4 61.9 281.1 0.22 0.1223 0.0035 6.2920 0.1500 0.3695 0.0059 1987.0 51.0 2016.5 20.0 2027.0 28.0
    20WLT-8-5 70.1 214.7 0.33 0.1224 0.0035 6.1950 0.1500 0.3660 0.0058 1988.0 51.0 2004.0 21.0 2010.0 27.0
    20WLT-8-6 235.6 885.0 0.27 0.1240 0.0035 5.2690 0.1300 0.3039 0.0050 2016.0 53.0 1863.1 20.0 1711.0 25.0
    20WLT-8-7 67.4 237.4 0.28 0.1212 0.0035 6.0820 0.1400 0.3607 0.0059 1970.0 51.0 1986.0 21.0 1985.0 28.0
    20WLT-8-8 145.2 293.7 0.49 0.1354 0.0042 7.4800 0.2000 0.4008 0.0069 2165.0 54.0 2170.0 24.0 2172.0 32.0
    20WLT-8-9 84.6 338.4 0.25 0.1219 0.0036 6.0360 0.1500 0.3569 0.0056 1981.0 53.0 1980.0 22.0 1967.0 27.0
    20WLT-8-10 69.3 311.9 0.22 0.1209 0.0036 6.1860 0.1500 0.3663 0.0057 1965.0 54.0 2001.0 21.0 2012.0 27.0
    20WLT-8-11 118.1 514.0 0.23 0.1222 0.0034 6.0260 0.1400 0.3555 0.0054 1986.0 49.0 1979.6 19.0 1960.0 26.0
    20WLT-8-12 87.7 350.9 0.25 0.1219 0.0034 6.2150 0.1400 0.3664 0.0054 1982.0 50.0 2005.1 20.0 2012.0 26.0
    20WLT-8-13 58.1 249.1 0.23 0.1200 0.0034 5.6440 0.1400 0.3441 0.0063 1951.0 51.0 1921.0 22.0 1905.0 30.0
    20WLT-8-14 75.5 178.0 0.42 0.1258 0.0039 6.6400 0.1700 0.3765 0.0069 2041.0 58.0 2067.0 22.0 2059.0 32.0
    20WLT-8-15 96.6 168.1 0.57 0.1241 0.0037 6.3300 0.1600 0.3647 0.0064 2012.0 54.0 2021.0 22.0 2004.0 30.0
    20WLT-8-16 73.1 234.2 0.31 0.1219 0.0034 6.1140 0.1400 0.3603 0.0053 1983.0 51.0 1991.0 20.0 1983.0 25.0
    20WLT-8-17 141.8 296.0 0.48 0.1221 0.0036 6.1260 0.1600 0.3571 0.0067 1984.0 52.0 1993.0 22.0 1968.0 32.0
    20WLT-8-18 47.6 218.3 0.22 0.1199 0.0034 6.1740 0.1500 0.3694 0.0060 1951.0 51.0 1999.0 22.0 2026.0 28.0
    20WLT-8-19 98.2 246.7 0.40 0.1216 0.0034 6.0740 0.1400 0.3607 0.0055 1978.0 51.0 1985.2 20.0 1987.0 27.0
    20WLT-8-20 117.1 315.0 0.37 0.1212 0.0034 6.0840 0.1400 0.3629 0.0055 1970.0 50.0 1987.7 20.0 1995.0 26.0
    20WLT-8-21 53.6 132.6 0.40 0.1266 0.0037 6.5540 0.1600 0.3736 0.0057 2045.0 51.0 2051.0 21.0 2046.0 27.0
    20WLT-8-22 62.2 321.2 0.19 0.1209 0.0034 5.8410 0.1300 0.3488 0.0051 1966.0 49.0 1951.4 20.0 1928.8 24.0
    20WLT-8-23 57.0 283.3 0.20 0.1218 0.0037 6.1650 0.1600 0.3629 0.0062 1979.0 55.0 1999.0 23.0 1995.0 29.0
    20WLT-8-24 34.9 162.8 0.21 0.1207 0.0036 6.0490 0.1500 0.3603 0.0060 1965.0 51.0 1981.0 22.0 1983.0 28.0
    20WLT-8-25 39.7 153.4 0.26 0.1262 0.0037 6.4860 0.1600 0.3747 0.0059 2045.0 50.0 2044.0 21.0 2051.0 28.0
    20WLT-8-26 166.5 1108.0 0.15 0.1325 0.0039 5.4330 0.1300 0.2950 0.0049 2130.0 51.0 1890.0 21.0 1666.0 25.0
    20WLT-8-27 251.0 475.9 0.53 0.1274 0.0035 6.6270 0.1500 0.3785 0.0057 2060.0 49.0 2062.2 20.0 2069.0 26.0
    20WLT-8-28 95.2 440.7 0.22 0.1232 0.0036 6.0020 0.1500 0.3553 0.0060 2000.0 53.0 1975.0 22.0 1959.0 28.0
    20WLT-8-29 64.5 256.0 0.25 0.1237 0.0038 6.1750 0.1600 0.3625 0.0060 2006.0 53.0 2000.0 23.0 1994.0 28.0
    20WLT-8-30 82.0 293.3 0.28 0.1230 0.0036 6.1650 0.1500 0.3640 0.0061 1996.0 52.0 1998.0 21.0 2001.0 29.0
    20WLT-8-31 115.9 373.0 0.31 0.1247 0.0035 6.4970 0.1500 0.3813 0.0068 2022.0 49.0 2045.0 21.0 2081.0 32.0
    黑云母二长花岗岩(20WLT-1)
    20WLT-1-1 100.1 117.4 0.85 0.1196 0.0035 5.7030 0.1400 0.3466 0.0053 1944.0 52.0 1930.0 21.0 1918.0 25.0
    20WLT-1-2 114.7 152.6 0.75 0.1186 0.0034 5.6620 0.1300 0.3467 0.0051 1933.0 53.0 1925.0 21.0 1919.0 25.0
    20WLT-1-3 85.1 116.8 0.73 0.1185 0.0036 5.6960 0.1400 0.3483 0.0055 1927.0 55.0 1929.0 22.0 1926.0 26.0
    20WLT-1-4 82.6 134.3 0.62 0.1183 0.0035 5.6260 0.1400 0.3455 0.0053 1924.0 53.0 1918.0 21.0 1913.0 25.0
    20WLT-1-5 125.6 170.2 0.74 0.1187 0.0034 5.6190 0.1300 0.3433 0.0051 1931.0 51.0 1917.4 20.0 1902.0 24.0
    20WLT-1-6 215.0 221.7 0.97 0.1177 0.0033 5.4840 0.1300 0.3380 0.0050 1920.0 51.0 1896.8 20.0 1876.7 24.0
    20WLT-1-7 270.1 295.1 0.92 0.1185 0.0034 5.4860 0.1300 0.3365 0.0051 1931.0 49.0 1898.0 20.0 1870.0 24.0
    20WLT-1-8 57.4 57.8 0.99 0.1187 0.0040 5.5700 0.1600 0.3404 0.0058 1929.0 58.0 1910.0 24.0 1888.0 28.0
    20WLT-1-9 68.6 98.8 0.69 0.1191 0.0036 5.6550 0.1500 0.3443 0.0055 1933.0 55.0 1921.0 22.0 1907.0 26.0
    20WLT-1-10 81.0 117.4 0.69 0.1179 0.0035 5.5870 0.1300 0.3441 0.0053 1919.0 53.0 1912.0 21.0 1906.0 25.0
    20WLT-1-11 111.6 137.4 0.81 0.1187 0.0035 5.5830 0.1300 0.3401 0.0052 1933.0 54.0 1912.0 20.0 1887.0 25.0
    20WLT-1-12 142.0 166.5 0.85 0.1182 0.0034 5.5900 0.1300 0.3422 0.0051 1929.0 54.0 1913.0 20.0 1897.0 24.0
    20WLT-1-13 105.1 134.1 0.78 0.1176 0.0036 5.6960 0.1400 0.3504 0.0055 1920.0 53.0 1929.0 22.0 1936.0 26.0
    20WLT-1-14 73.4 90.2 0.81 0.1183 0.0036 5.6340 0.1500 0.3453 0.0055 1922.0 54.0 1918.0 22.0 1912.0 26.0
    20WLT-1-15 134.1 183.2 0.73 0.1180 0.0034 5.4170 0.1300 0.3341 0.0050 1922.0 51.0 1887.0 20.0 1858.0 24.0
    20WLT-1-16 73.1 78.0 0.94 0.1172 0.0036 5.5120 0.1400 0.3417 0.0053 1905.0 55.0 1900.0 22.0 1894.0 26.0
    20WLT-1-17 94.8 105.3 0.90 0.1175 0.0035 5.4360 0.1300 0.3365 0.0051 1910.0 53.0 1888.0 21.0 1870.0 25.0
    20WLT-1-18 102.2 132.7 0.77 0.1185 0.0038 5.7180 0.1500 0.3489 0.0059 1926.0 58.0 1932.0 24.0 1929.0 28.0
    20WLT-1-19 128.0 187.4 0.68 0.1165 0.0034 5.2740 0.1300 0.3283 0.0050 1898.0 53.0 1864.4 20.0 1830.0 24.0
    20WLT-1-20 102.9 110.9 0.93 0.1187 0.0035 5.6130 0.1400 0.3442 0.0054 1930.0 53.0 1916.0 21.0 1906.0 26.0
    20WLT-1-21 162.8 181.1 0.90 0.1183 0.0034 5.5830 0.1400 0.3422 0.0055 1928.0 54.0 1913.0 21.0 1897.0 26.0
    20WLT-1-22 181.1 213.8 0.85 0.1173 0.0033 5.4070 0.1300 0.3343 0.0051 1913.0 52.0 1884.4 20.0 1859.0 25.0
    20WLT-1-23 52.2 68.8 0.76 0.1183 0.0036 5.4950 0.1400 0.3375 0.0053 1921.0 55.0 1897.0 22.0 1874.0 25.0
    20WLT-1-24 158.8 154.4 1.03 0.1172 0.0034 5.4110 0.1300 0.3352 0.0050 1908.0 53.0 1886.0 20.0 1863.0 24.0
    20WLT-1-25 60.0 109.6 0.55 0.1168 0.0035 5.4710 0.1300 0.3402 0.0052 1900.0 54.0 1894.0 21.0 1887.0 25.0
    20WLT-1-26 195.7 211.9 0.92 0.1175 0.0034 5.5230 0.1300 0.3400 0.0052 1913.0 52.0 1902.0 21.0 1886.0 25.0
    20WLT-1-27 106.7 149.7 0.71 0.1165 0.0034 5.4340 0.1300 0.3380 0.0051 1898.0 52.0 1888.6 20.0 1877.0 25.0
    20WLT-1-28 115.5 142.8 0.81 0.1160 0.0037 5.4900 0.1500 0.3402 0.0058 1891.0 59.0 1897.0 24.0 1887.0 28.0
    20WLT-1-29 120.3 160.9 0.75 0.1184 0.0038 5.7100 0.1600 0.3472 0.0061 1926.0 58.0 1931.0 25.0 1921.0 29.0
    20WLT-1-30 88.2 113.7 0.78 0.1171 0.0038 5.5500 0.1600 0.3417 0.0059 1911.0 56.0 1906.0 24.0 1894.0 28.0
    下载: 导出CSV

    表 2  达茂旗地区前寒武纪基底色尔腾山岩群和变质侵入岩锆石Lu-Hf同位素分析结果

    Table 2.  Zircon Lu-Hf data of the Precambrian basement Sertengshan Group and Paleoproterozoic metamorphic intrusive rocks in Damaoqi area

    点号 176Yb/
    177Hf    		 176Lu/
    177Hf    		 176Hf/
    177Hf    		 2σ 年龄
    /Ma    		 εHf(0) εHf(t) TDM1
    /Ma    		 TDM2
    /Ma    		 fLu/Hf
    黑云斜长片麻岩(20WLT-2)
    -01 0.025764 0.000848 0.280988 0.000016 2733 -63.09 -3.21 3133 3372 -0.97
    -17 0.026673 0.000823 0.281136 0.000018 2671 -57.84 0.71 2931 3087 -0.98
    -08 0.022030 0.000634 0.281526 0.000016 2138 -44.08 2.84 2391 2545 -0.98
    -11 0.024772 0.000702 0.281427 0.000015 2131 -47.57 -0.93 2530 2770 -0.98
    -28 0.025669 0.000789 0.281587 0.000014 2008 -41.92 1.87 2318 2504 -0.98
    -29 0.033436 0.001035 0.281639 0.000014 2126 -40.05 6.03 2260 2340 -0.97
    -30 0.052413 0.001507 0.281548 0.000018 2000 -43.27 -0.63 2415 2652 -0.95
    -19 0.033788 0.000940 0.281459 0.000017 2140 -46.44 0.07 2502 2716 -0.97
    碱长花岗岩(1806-7)
    -02 0.028600 0.000781 0.281616 0.000014 1999 -40.89 2.72 2278 2445 -0.98
    -03 0.064866 0.001934 0.281711 0.000017 1999 -37.51 4.56 2214 2332 -0.94
    -05 0.046265 0.001281 0.281617 0.000013 1999 -40.85 2.08 2306 2484 -0.96
    -06 0.155654 0.003727 0.281873 0.000026 1999 -31.78 7.90 2085 2126 -0.89
    -07 0.034876 0.001060 0.281703 0.000016 1999 -37.81 5.43 2175 2278 -0.97
    -08 0.068710 0.001838 0.281566 0.000020 1999 -42.67 -0.49 2413 2642 -0.94
    -09 0.031917 0.000863 0.281792 0.000019 1999 -34.66 8.87 2041 2066 -0.97
    -11 0.045591 0.001243 0.281623 0.000015 1999 -40.65 2.34 2296 2469 -0.96
    石英闪长岩(20WLT-8)
    -01 0.054284 0.001555 0.281660 0.000019 1992 -39.34 3.08 2263 2418 -0.95
    -04 0.038785 0.001119 0.281545 0.000018 1992 -43.38 -0.39 2395 2631 -0.97
    -05 0.053384 0.001531 0.281617 0.000019 1992 -40.83 1.61 2321 2508 -0.95
    -07 0.025743 0.000777 0.281603 0.000022 1992 -41.34 2.11 2295 2477 -0.98
    -09 0.039155 0.001157 0.281679 0.000015 1992 -38.67 4.29 2214 2343 -0.97
    -10 0.056135 0.001675 0.281619 0.000016 1992 -40.76 1.49 2327 2515 -0.95
    -11 0.045360 0.001343 0.281584 0.000019 1992 -42.02 0.67 2356 2565 -0.96
    -16 0.063219 0.001858 0.281672 0.000019 1992 -38.91 3.11 2265 2416 -0.94
    -20 0.029715 0.000867 0.281562 0.000019 1992 -42.80 0.53 2357 2574 -0.97
    -22 0.033230 0.001010 0.281561 0.000020 1992 -42.82 0.32 2366 2587 -0.97
    黑云母二长花岗岩(20WLT-1)
    -01 0.015645 0.000414 0.281497 0.000018 1920 -45.10 -2.79 2417 2723 -0.99
    -02 0.017307 0.000460 0.281496 0.000017 1920 -45.11 -2.86 2420 2727 -0.99
    -09 0.017724 0.000473 0.281489 0.000021 1920 -45.38 -3.15 2431 2745 -0.99
    -10 0.020161 0.000524 0.281504 0.000016 1920 -44.84 -2.68 2414 2716 -0.98
    -14 0.012076 0.000322 0.281455 0.000015 1920 -46.57 -4.16 2467 2806 -0.99
    -16 0.023890 0.000611 0.281498 0.000020 1920 -45.06 -3.01 2428 2736 -0.98
    -17 0.019407 0.000506 0.281454 0.000019 1920 -46.62 -4.45 2481 2824 -0.98
    -18 0.018069 0.000478 0.281472 0.000018 1920 -45.96 -3.74 2454 2781 -0.99
    下载: 导出CSV
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    ①

    内蒙古地质矿产(集团)有限责任公司. 内蒙古达尔罕茂明安联合旗等四幅1: 5万区域矿产地质调查报告. 2014.

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收稿日期:  2021-05-20
修回日期:  2021-08-20
刊出日期:  2022-04-15

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