Inspiration of Zircon Chronological Characteristics of Sandstone Fragments from Bayanhua Formation in Chuanjing Depression, Inner Mongolia on Exploration of Source and Sandstone Type Uranium Deposits
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摘要:
早白垩世是二连盆地演化的一个重要演化阶段，其构造环境与沉积物源的探讨对该盆地铀矿成因研究具有重要启示意义。笔者以二连盆地西部川井坳陷下白垩统巴彦花组为主要研究对象，通过碎屑锆石LA-ICP-MS U-Pb定年，结果显示下白垩统巴彦花组下部与上部具有不同年龄峰值，其下部为
1800 ～2100 Ma的主年龄峰值；其上部为250～330 Ma的主年龄峰值，综合区域内各地质体年代学研究，认为巴彦花组沉积物质来源主要为宝音图隆起、索伦山隆起和狼山-白云鄂博隆起。结合钻孔综合测井结果，认为下白垩统巴彦花组下部具有较高的U含量，可作为研究区及周边寻找砂岩型铀矿的主要目标层位。-
关键词:
- 川井坳陷 /
- 二连盆地 /
- 下白垩统 /
- 碎屑锆石LA-ICP-MS U-Pb定年 /
- 砂岩型铀矿
Abstract:The early Cretaceous is an important evolutionary stage of the evolution of the Erlian basin, and the exploration of its tectonic environment and sediment sources has significant implications for the study of the genesis of uranium deposits in the basin. This article focuses on the Bayanhua Formation of the Lower Cretaceous in the Chuanjing depression of the western Erlian basin. Through the dating results of detrital zircon LA-ICP-MS U-Pb, it is shown that the lower and upper parts of the Bayanhua Formation of the Lower Cretaceous have different age peaks, with the lower part having a main age peak of
1800 ～2100 Ma; The upper part of the Bayanhua Formation has a main age peak of 250～330 Ma. Based on the study of plastid chronology in various regions, it is believed that the sedimentary materials mainly come from the Baoyintu uplift, Sorenshan uplift, and Langshan Baiyunebo uplift. Based on the comprehensive drilling logging results, it is believed that the lower part of the Bayanhua Formation in the Lower Cretaceous has a high uranium content, which can be used as the main target layer for searching for sandstone type uranium deposits in the study area and surrounding areas. -
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图 1 川井坳陷区域地质构造简图
Figure 1. Geological structure diagram of Chuanjing depression region
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图 2 钻孔岩性柱状图、岩心实物照片及采样位置
a. 钻孔1ZK0003；b. 钻孔1ZK0701
Figure 2. Lithological histogram of borehole, physical core photos and sampling locations
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图 3 研究区典型碎屑锆石阴极发光图像及测试位置
a.样品TW0003-1典型碎屑锆石阴极发光图像及测试位置； b.样品TW0003-2典型碎屑锆石阴极发光图像及测试位置； c.样品TW0701典型碎屑锆石阴极发光图像及测试位置
Figure 3. Cathodoluminescence images and testing locations of typical detrital zircon in the research area
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图 4 研究区样品碎屑锆石U-Pb年龄谐和图及年龄分布直方图
Figure 4. U-Pb age covariance plot and age distribution histogram of zircon fragments in the study area
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图 5 研究区碎屑锆石年龄与Th/U值关系图
Figure 5. Relationship between the age of detrital zircons and Th/U values in the study area
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图 6 下白垩统巴彦花组砂岩碎屑锆石与潜在源区锆石年龄直方图
a.样品TW0003-1和TW0003-2碎屑锆石年龄直方图；b.宝音图隆起岩浆岩年龄直方图（数据源自孙立新等，2013；滕飞等，2019）；c.样品TW0701碎屑锆石年龄直方图；d.索伦山隆起和狼山—白云鄂博隆起岩浆岩年龄直方图，（数据源自Miao et al.，2008；Jian et al.，2010；皮桥辉等，2010；彭润民等，2010；Chen et al.，2012； Jian et al.，2012；Chu et al.，2013；吴亚飞等，2013；王炎阳等，2014；柳志华等，2020 ）
Figure 6. Ages histogram of detrital zircons and potential source zircons from the lower cretaceous Bayanhua formation sandstones
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图 7 研究区已施工钻孔剖面图
Figure 7. Cross section of drilled holes constructed in the research area
表 1 样品TW0003-1碎屑锆石LA-ICP-MS U-Pb年龄测试结果
Table 1 Sample TW0003-1 clastic zircon LA-ICP-MS U-Pb age test results
测试点 元素含量
（10−6）Th/U 同位素比值 年龄（Ma） Th U 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 1 62 97 0.64 0.15847 0.00422 10.59036 0.26201 0.48183 0.00719 2439 45 2488 23 2535 31 2 111 194 0.57 0.10632 0.00271 3.95059 0.09550 0.26775 0.00377 1739 42 1624 20 1529 19 3 87 157 0.56 0.05497 0.00209 0.54905 0.01910 0.07347 0.00126 409 85 444 13 457 8 4 73 182 0.40 0.11404 0.00258 5.44522 0.11767 0.34365 0.00434 1865 36 1892 19 1904 21 5 53 209 0.25 0.11511 0.00252 5.18868 0.10732 0.32485 0.00394 1883 39 1851 18 1813 19 6 285 339 0.84 0.05317 0.00150 0.50763 0.01318 0.06934 0.00094 345 32 417 9 432 6 7 93 336 0.28 0.15593 0.00316 9.80855 0.20015 0.45410 0.00597 2413 34 2417 19 2413 26 8 41 369 0.11 0.11560 0.00248 5.68397 0.12269 0.35478 0.00443 1900 39 1929 19 1957 21 9 100 254 0.39 0.10737 0.00248 5.11989 0.11960 0.34631 0.00533 1755 38 1839 20 1917 26 10 101 191 0.53 0.11156 0.00283 5.58757 0.13604 0.36299 0.00515 1825 41 1914 21 1996 24 11 95 70 1.35 0.11772 0.00386 5.63388 0.15655 0.34842 0.00559 1922 59 1921 24 1927 27 13 44 227 0.19 0.11685 0.00274 5.71690 0.13066 0.35351 0.00476 1909 42 1934 20 1951 23 14 152 619 0.25 0.11215 0.00231 3.77428 0.08423 0.24305 0.00364 1835 37 1587 18 1403 19 15 96 445 0.22 0.05448 0.00170 0.31687 0.00991 0.04202 0.00056 391 70 279 8 265 3 16 53 261 0.20 0.05353 0.00202 0.28482 0.01066 0.03871 0.00062 350 85 254 8 245 4 17 85 143 0.59 0.05517 0.00199 0.55386 0.01883 0.07320 0.00107 420 77 448 12 455 6 18 63 255 0.25 0.11699 0.00221 5.59361 0.10606 0.34450 0.00379 1911 34 1915 16 1908 18 19 45 499 0.09 0.11140 0.00202 4.71542 0.08692 0.30476 0.00330 1833 32 1770 15 1715 16 20 162 504 0.32 0.11940 0.00221 6.43008 0.14290 0.38693 0.00593 1947 33 2036 20 2109 28 21 26 74 0.35 0.16786 0.00363 11.87907 0.26554 0.50982 0.00707 2536 36 2595 21 2656 30 22 197 152 1.30 0.16607 0.00359 11.26216 0.30253 0.48577 0.00845 2518 35 2545 25 2552 37 23 152 267 0.57 0.11400 0.00255 5.22754 0.10283 0.32985 0.00371 1865 36 1857 17 1838 18 24 452 539 0.84 0.05503 0.00160 0.31800 0.00840 0.04193 0.00052 413 65 280 6 265 3 25 19 55 0.34 0.12024 0.00287 6.23028 0.15240 0.37422 0.00528 1961 43 2009 21 2049 25 26 57 258 0.22 0.12062 0.00215 6.32607 0.10896 0.37804 0.00405 1965 33 2022 15 2067 19 27 71 163 0.43 0.11359 0.00217 5.39843 0.10119 0.34186 0.00365 1858 29 1885 16 1896 18 28 406 200 2.03 0.16565 0.00294 10.72787 0.17525 0.46728 0.00472 2514 30 2500 15 2472 21 29 253 247 1.02 0.10982 0.00237 4.90197 0.09213 0.31476 0.00384 1798 34 1803 16 1764 19 30 46 126 0.36 0.17777 0.00393 11.66130 0.22338 0.46473 0.00599 2632 37 2578 18 2460 26 31 98 133 0.74 0.13165 0.00309 6.77438 0.15365 0.37095 0.00626 2120 41 2082 20 2034 29 32 62 833 0.07 0.11260 0.00246 4.66041 0.11785 0.29856 0.00535 1843 35 1760 21 1684 27 33 113 218 0.52 0.11585 0.00259 5.41424 0.11694 0.33860 0.00456 1894 40 1887 19 1880 22 34 84 68 1.23 0.09316 0.00254 3.34934 0.08676 0.26135 0.00400 1491 52 1493 20 1497 20 35 74 616 0.12 0.11862 0.00217 5.83231 0.13713 0.35553 0.00588 1936 33 1951 20 1961 28 36 37 77 0.48 0.13564 0.00354 7.20963 0.18296 0.38835 0.00660 2173 45 2138 23 2115 31 37 79 399 0.20 0.11730 0.00237 5.55430 0.09772 0.34416 0.00355 1917 36 1909 15 1907 17 38 24 363 0.07 0.05077 0.00186 0.28950 0.01010 0.04202 0.00063 232 90 258 8 265 4 39 164 223 0.74 0.12034 0.00258 6.16079 0.12165 0.37423 0.00441 1961 38 1999 17 2049 21 40 238 506 0.47 0.05354 0.00130 0.53123 0.01291 0.07243 0.00094 350 56 433 9 451 6 41 974 890 1.09 0.05309 0.00167 0.30899 0.00891 0.04275 0.00059 332 103 273 7 270 4 42 316 390 0.81 0.14218 0.00317 6.44265 0.14008 0.32521 0.00406 2254 38 2038 19 1815 20 43 173 438 0.40 0.05672 0.00153 0.54472 0.01540 0.06895 0.00090 480 59 442 10 430 5 44 50 331 0.15 0.11742 0.00231 5.85461 0.11588 0.35892 0.00451 1917 35 1955 17 1977 21 45 165 472 0.35 0.11931 0.00213 5.76677 0.10343 0.34710 0.00431 1946 32 1941 16 1921 21 46 66 256 0.26 0.11911 0.00210 5.77263 0.10168 0.34712 0.00354 1943 33 1942 15 1921 17 47 67 100 0.67 0.16146 0.00319 8.57845 0.20048 0.38129 0.00671 2472 33 2294 21 2082 31 48 100 154 0.65 0.05802 0.00216 0.59746 0.02295 0.07428 0.00126 532 77 476 15 462 8 49 92 94 0.98 0.22887 0.00456 17.83978 0.35497 0.55847 0.00701 3044 32 2981 19 2860 29 50 128 128 1.00 0.06985 0.00209 1.37726 0.03892 0.14253 0.00212 924 61 879 17 859 12 51 106 131 0.81 0.07012 0.00239 1.23862 0.03950 0.12725 0.00181 931 75 818 18 772 10 52 102 108 0.94 0.11936 0.00285 5.96553 0.13440 0.35812 0.00491 1947 43 1971 20 1973 23 53 76 114 0.66 0.04673 0.00268 0.31440 0.01654 0.04950 0.00096 35 133 278 13 311 6 54 71 143 0.49 0.15731 0.00362 8.40055 0.16093 0.37360 0.00500 2428 39 2275 17 2046 23 55 49 445 0.11 0.11447 0.00213 5.86985 0.11740 0.36634 0.00529 1872 33 1957 17 2012 25 56 46 588 0.08 0.11575 0.00212 5.75574 0.09926 0.35531 0.00396 1892 33 1940 15 1960 19 57 89 158 0.56 0.15984 0.00317 9.97999 0.19082 0.44680 0.00572 2454 34 2433 18 2381 26 58 41 90 0.45 0.11644 0.00267 5.94484 0.14761 0.36566 0.00644 1902 41 1968 22 2009 30 59 59 633 0.09 0.11233 0.00240 4.73433 0.11063 0.30027 0.00479 1839 39 1773 20 1693 24 60 42 262 0.16 0.11707 0.00276 5.82189 0.12997 0.35633 0.00569 1922 42 1950 19 1965 27 61 283 300 0.94 0.09503 0.00247 3.51255 0.09036 0.26441 0.00459 1529 49 1530 20 1512 23 62 111 111 1.00 0.05753 0.00367 0.34344 0.01941 0.04466 0.00119 522 145 300 15 282 7 63 65 323 0.20 0.10923 0.00268 5.35436 0.12466 0.35216 0.00589 1787 44 1878 20 1945 28 64 317 256 1.24 0.11229 0.00292 4.87030 0.10591 0.30472 0.00448 1837 46 1797 18 1715 22 65 159 235 0.68 0.05282 0.00224 0.35740 0.01603 0.04864 0.00099 320 96 310 12 306 6 66 146 366 0.40 0.11267 0.00216 4.56158 0.08850 0.29033 0.00392 1843 34 1742 16 1643 20 67 71 437 0.16 0.11786 0.00209 5.66038 0.10452 0.34448 0.00448 1924 32 1925 16 1908 22 68 805 1668 0.48 0.04942 0.00111 0.23687 0.00525 0.03443 0.00042 169 49 216 4 218 3 69 53 97 0.54 0.11728 0.00263 5.50366 0.11427 0.33065 0.00461 1917 39 1901 18 1842 22 70 130 433 0.30 0.12277 0.00227 6.12764 0.11282 0.35839 0.00392 1998 32 1994 16 1975 19 71 74 320 0.23 0.12046 0.00265 5.84890 0.11865 0.34128 0.00402 1965 39 1954 18 1893 19 72 30 361 0.08 0.12031 0.00228 5.85102 0.10687 0.34977 0.00393 1961 33 1954 16 1934 19 73 249 573 0.43 0.05312 0.00154 0.27490 0.00844 0.03743 0.00071 345 32 247 7 237 4 74 102 278 0.37 0.11824 0.00205 5.41390 0.09612 0.32923 0.00387 1931 31 1887 15 1835 19 75 404 624 0.65 0.12578 0.00202 5.71284 0.08920 0.32636 0.00303 2040 33 1933 14 1821 15 76 74 864 0.09 0.11576 0.00223 5.41474 0.08608 0.33598 0.00343 1892 35 1887 14 1867 17 77 87 475 0.18 0.12283 0.00207 5.82270 0.09778 0.34067 0.00336 1998 29 1950 15 1890 16 78 48 389 0.12 0.12198 0.00213 5.89180 0.11590 0.34705 0.00459 1987 31 1960 17 1920 22 79 60 150 0.40 0.11925 0.00237 5.56389 0.10883 0.33644 0.00422 1946 35 1911 17 1870 20 80 221 155 1.43 0.17027 0.00323 10.43828 0.20549 0.44142 0.00536 2560 32 2474 18 2357 24 81 281 379 0.74 0.05827 0.00163 0.56798 0.01648 0.07008 0.00100 539 61 457 11 437 6 82 45 372 0.12 0.12164 0.00289 5.93624 0.13795 0.35102 0.00453 1981 42 1967 20 1939 22 83 212 308 0.69 0.05294 0.00212 0.29472 0.01158 0.04023 0.00060 328 91 262 9 254 4 84 474 921 0.51 0.11866 0.00235 5.26626 0.10395 0.31887 0.00362 1936 35 1863 17 1784 18 85 66 448 0.15 0.11878 0.00229 5.68910 0.11640 0.34355 0.00400 1939 35 1930 18 1904 19 86 453 716 0.63 0.12992 0.00235 6.25691 0.11711 0.34593 0.00405 2098 32 2012 16 1915 19 87 140 132 1.06 0.08171 0.00211 2.30873 0.05451 0.20481 0.00279 1239 50 1215 17 1201 15 88 298 249 1.19 0.11710 0.00228 5.30721 0.10352 0.32618 0.00408 1922 35 1870 17 1820 20 89 144 441 0.33 0.11335 0.00214 5.17916 0.09760 0.32769 0.00335 1854 33 1849 16 1827 16 90 178 185 0.96 0.05462 0.00239 0.38511 0.01684 0.05076 0.00080 398 103 331 12 319 5 92 109 255 0.43 0.12012 0.00329 5.98852 0.14297 0.34944 0.00467 1958 48 1974 21 1932 22 93 61 296 0.20 0.11974 0.00263 5.95411 0.13103 0.35649 0.00421 1954 34 1969 19 1965 20 94 56 395 0.14 0.11596 0.00231 5.78958 0.11401 0.35836 0.00435 1895 37 1945 17 1974 21 95 48 302 0.16 0.11596 0.00224 5.66700 0.11526 0.35015 0.00437 1895 34 1926 18 1935 21 96 57 78 0.73 0.05412 0.00352 0.38216 0.02260 0.05170 0.00120 376 142 329 17 325 7 97 257 529 0.49 0.05264 0.00164 0.34988 0.01138 0.04753 0.00062 322 70 305 9 299 4 98 78 390 0.20 0.11422 0.00206 4.87288 0.09458 0.30514 0.00402 1933 32 1798 16 1717 20 99 44 267 0.16 0.11908 0.00234 5.91808 0.11382 0.35614 0.00400 1942 35 1964 17 1964 19 100 120 259 0.46 0.11822 0.00233 6.02381 0.11686 0.36491 0.00407 1929 35 1979 17 2005 19 101 180 409 0.44 0.11451 0.00224 5.41043 0.10280 0.33855 0.00417 1872 35 1887 16 1880 20 102 22 128 0.17 0.11722 0.00280 5.93005 0.13314 0.36349 0.00499 1915 47 1966 20 1999 24 103 53 166 0.32 0.11152 0.00276 5.30524 0.12444 0.33347 0.00501 1824 40 1870 20 1855 24 104 168 280 0.60 0.10430 0.00227 4.41546 0.09300 0.30344 0.00361 1702 41 1715 17 1708 18 105 125 345 0.36 0.12410 0.00237 6.23787 0.10978 0.36047 0.00380 2017 33 2010 15 1984 18 106 29 273 0.11 0.11744 0.00232 5.50116 0.10382 0.33577 0.00360 1918 35 1901 16 1866 17 107 77 271 0.28 0.11672 0.00240 5.64346 0.11454 0.34685 0.00448 1906 37 1923 18 1920 21 108 153 221 0.69 0.04592 0.00300 0.13590 0.00830 0.02171 0.00044 129 7 138 3 109 303 546 0.55 0.13060 0.00287 6.84986 0.14731 0.37543 0.00424 2106 33 2092 19 2055 20 110 63 611 0.10 0.11944 0.00284 5.73832 0.12926 0.34450 0.00407 1948 43 1937 20 1908 20 111 129 163 0.79 0.11092 0.00307 4.74620 0.12727 0.30749 0.00449 1815 50 1775 23 1728 22 112 48 425 0.11 0.11827 0.00358 5.46176 0.16125 0.33128 0.00523 1931 54 1895 25 1845 25 113 51 301 0.17 0.11774 0.00352 5.39806 0.14321 0.32214 0.00444 1922 21 1885 23 1800 22 114 523 356 1.47 0.11904 0.00308 5.53908 0.13831 0.33397 0.00441 1943 46 1907 22 1858 21 115 43 259 0.16 0.12133 0.00312 5.95050 0.15180 0.35209 0.00489 1976 46 1969 22 1945 23 116 61 135 0.45 0.05539 0.00251 0.52392 0.02259 0.06895 0.00123 428 100 428 15 430 7 117 101 324 0.31 0.11558 0.00280 5.09585 0.11610 0.31750 0.00420 1900 38 1835 19 1778 21 118 61 304 0.20 0.12049 0.00268 5.76586 0.12445 0.34400 0.00403 1965 39 1941 19 1906 19 119 82 437 0.19 0.12110 0.00274 5.56918 0.12625 0.32998 0.00384 1973 41 1911 20 1838 19 120 63 660 0.10 0.11897 0.00271 5.21134 0.11670 0.31487 0.00391 1943 41 1854 19 1765 19 
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表 2 样品TW0003-2碎屑锆石LA-ICP-MS U-Pb年龄测试结果
Table 2 Sample TW0003-2 clastic zircon LA-ICP-MS U-Pb age test results
测试点 元素含量
（10−6）Th/U 同位素比值 年龄（Ma） Th U 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 1 390 627 0.62 0.11894 0.00241 5.78629 0.10615 0.35415 0.00435 1940 36 1944 16 1954 21 2 307 715 0.43 0.11741 0.00309 5.60515 0.09555 0.33239 0.00349 1917 48 1917 15 1850 17 3 168 367 0.46 0.11971 0.00265 5.67000 0.09584 0.34343 0.00361 1954 34 1927 15 1903 17 4 24 147 0.17 0.05570 0.00253 0.29961 0.01286 0.04009 0.00074 439 97 266 10 253 5 5 62 193 0.32 0.05561 0.00389 0.28275 0.02000 0.03694 0.00084 435 157 253 16 234 5 6 57 109 0.53 0.04970 0.00274 0.29835 0.01546 0.04362 0.00074 189 125 265 12 275 5 8 235 368 0.64 0.10541 0.00176 4.48339 0.08774 0.30643 0.00393 1721 27 1728 16 1723 19 9 64 122 0.53 0.11362 0.00286 5.31137 0.10144 0.32616 0.00437 1858 45 1871 16 1820 21 10 189 263 0.72 0.12276 0.00224 5.86397 0.10776 0.34492 0.00387 1998 32 1956 16 1910 19 11 93 238 0.39 0.11792 0.00233 5.67953 0.11274 0.34691 0.00401 1925 31 1928 17 1920 19 12 5 160 0.03 0.05270 0.00289 0.30725 0.01526 0.04213 0.00068 317 124 272 12 266 4 13 217 1015 0.21 0.12914 0.00250 5.87120 0.10449 0.32138 0.00397 2087 34 1957 15 1796 19 14 56 99 0.57 0.11521 0.00238 5.26402 0.10605 0.33053 0.00401 1883 32 1863 17 1841 19 15 116 89 1.30 0.16449 0.00330 10.32335 0.21845 0.45073 0.00611 2502 34 2464 20 2399 27 16 241 162 1.49 0.11557 0.00277 4.94182 0.09368 0.30014 0.00354 1889 38 1809 16 1692 18 17 43 94 0.46 0.05188 0.00371 0.28328 0.01841 0.03986 0.00089 280 165 253 15 252 5 18 20 273 0.07 0.05129 0.00219 0.29622 0.01208 0.04203 0.00064 254 98 263 9 265 4 19 26 28 0.92 0.11351 0.00349 5.28974 0.16268 0.32958 0.00544 1857 56 1867 26 1836 26 20 224 472 0.48 0.11945 0.00255 5.32303 0.10875 0.32117 0.00342 1948 39 1873 18 1795 17 21 57 289 0.20 0.11875 0.00295 6.11891 0.15001 0.37115 0.00457 1939 44 1993 21 2035 22 22 69 336 0.20 0.11773 0.00282 5.57147 0.13163 0.34118 0.00478 1922 43 1912 20 1892 23 23 250 303 0.83 0.05106 0.00202 0.28643 0.01148 0.04073 0.00063 243 91 256 9 257 4 24 65 277 0.24 0.11770 0.00236 5.85204 0.11699 0.35817 0.00383 1921 36 1954 17 1974 18 25 144 782 0.18 0.05619 0.00217 0.29666 0.01076 0.03817 0.00065 461 85 264 8 241 4 26 180 314 0.57 0.12130 0.00217 5.47055 0.10558 0.32484 0.00408 1976 32 1896 17 1813 20 27 41 207 0.20 0.04855 0.00208 0.27741 0.01118 0.04205 0.00068 128 106 249 9 265 4 28 236 228 1.04 0.16243 0.00285 11.31559 0.21949 0.50153 0.00642 2481 30 2549 18 2620 28 29 80 1082 0.07 0.11376 0.00198 4.45914 0.08521 0.28160 0.00348 1861 31 1723 16 1599 18 30 433 929 0.47 0.11109 0.00233 5.00220 0.08898 0.31768 0.00330 1817 33 1820 15 1778 16 31 52 125 0.42 0.12120 0.00266 6.12101 0.13949 0.36470 0.00515 1974 34 1993 20 2004 24 32 74 286 0.26 0.11714 0.00227 5.92685 0.11316 0.36549 0.00365 1913 34 1965 17 2008 17 33 43 81 0.54 0.12055 0.00280 5.86881 0.13379 0.35340 0.00423 1965 41 1957 20 1951 20 34 97 641 0.15 0.11494 0.00203 4.73827 0.08241 0.29872 0.00292 1880 32 1774 15 1685 15 36 67 149 0.45 0.05165 0.00296 0.27096 0.01341 0.03982 0.00085 333 131 243 11 252 5 37 30 173 0.17 0.05206 0.00240 0.27362 0.01224 0.03877 0.00074 287 101 246 10 245 5 38 51 103 0.49 0.12024 0.00313 5.69985 0.13212 0.34848 0.00472 1961 42 1931 20 1927 23 39 207 379 0.55 0.05048 0.00188 0.28226 0.01017 0.04112 0.00065 217 87 252 8 260 4 40 54 338 0.16 0.12603 0.00325 6.21219 0.15148 0.36157 0.00468 2044 45 2006 21 1990 22 41 67 333 0.20 0.12369 0.00289 5.97405 0.14737 0.34827 0.00421 2010 41 1972 21 1926 20 42 96 518 0.19 0.11966 0.00259 5.23553 0.11814 0.31532 0.00358 1951 34 1858 19 1767 18 43 129 164 0.79 0.05420 0.00279 0.29404 0.01419 0.04000 0.00068 389 119 262 11 253 4 44 145 316 0.46 0.12121 0.00250 5.48428 0.11432 0.32652 0.00355 1976 37 1898 18 1822 17 45 332 688 0.48 0.11836 0.00225 5.22283 0.10151 0.31782 0.00329 1932 33 1856 17 1779 16 46 500 702 0.71 0.11906 0.00223 5.42401 0.10527 0.32762 0.00315 1943 33 1889 17 1827 15 47 27 55 0.49 0.05932 0.00457 0.31312 0.02002 0.03993 0.00098 589 136 277 15 252 6 48 210 222 0.95 0.12180 0.00265 5.39557 0.11567 0.31929 0.00371 1983 39 1884 18 1786 18 49 25 71 0.36 0.13715 0.00327 8.24122 0.21930 0.43208 0.00711 2192 41 2258 24 2315 32 50 71 329 0.22 0.12237 0.00312 6.11186 0.14426 0.35103 0.00404 1991 45 1992 21 1940 19 51 118 110 1.07 0.05673 0.00350 0.30016 0.01758 0.03915 0.00079 480 137 267 14 248 5 52 159 239 0.66 0.17072 0.00381 11.56281 0.25709 0.48663 0.00572 2565 37 2570 21 2556 25 54 182 317 0.58 0.12006 0.00238 5.59688 0.11375 0.33433 0.00351 1957 35 1916 18 1859 17 55 59 162 0.37 0.05022 0.00346 0.26546 0.01746 0.03891 0.00101 206 166 239 14 246 6 56 21 41 0.51 0.11732 0.00314 5.74855 0.14977 0.35467 0.00579 1917 16 1939 23 1957 28 57 120 255 0.47 0.05301 0.00199 0.29785 0.01070 0.04083 0.00059 328 85 265 8 258 4 58 100 116 0.86 0.05211 0.00296 0.27032 0.01452 0.03806 0.00069 300 131 243 12 241 4 59 64 262 0.24 0.11815 0.00295 5.73937 0.11126 0.34146 0.00387 1929 45 1937 17 1894 19 60 79 124 0.64 0.10064 0.00227 3.61871 0.08444 0.25803 0.00338 1636 42 1554 19 1480 17 61 38 732 0.05 0.05347 0.00159 0.29940 0.00875 0.04037 0.00060 350 69 266 7 255 4 62 70 124 0.56 0.05509 0.00288 0.30236 0.01442 0.04056 0.00082 417 117 268 11 256 5 63 110 163 0.67 0.09710 0.00235 3.51327 0.07989 0.26070 0.00318 1569 45 1530 18 1493 16 64 68 185 0.37 0.05239 0.00204 0.25554 0.00998 0.03541 0.00055 302 87 231 8 224 3 65 163 296 0.55 0.11318 0.00210 4.28724 0.07769 0.27211 0.00294 1851 34 1691 15 1551 15 66 76 130 0.58 0.16331 0.00312 10.20209 0.18180 0.45079 0.00518 2490 32 2453 17 2399 23 67 69 250 0.28 0.11546 0.00217 5.74988 0.10436 0.35879 0.00370 1887 33 1939 16 1976 18 68 69 531 0.13 0.11845 0.00285 4.83830 0.09815 0.28538 0.00310 1933 38 1792 17 1618 16 69 301 293 1.03 0.11943 0.00239 5.99432 0.11956 0.36089 0.00345 1948 30 1975 17 1986 16 70 98 326 0.30 0.12048 0.00272 4.70387 0.10645 0.28115 0.00319 1965 40 1768 19 1597 16 71 69 251 0.27 0.11656 0.00275 5.41467 0.12556 0.33472 0.00384 1906 42 1887 20 1861 19 72 143 263 0.54 0.11004 0.00242 4.89584 0.10507 0.32076 0.00349 1811 39 1802 18 1793 17 73 191 1001 0.19 0.11398 0.00233 5.13872 0.10517 0.32470 0.00357 1865 37 1843 17 1813 17 74 94 361 0.26 0.11462 0.00227 4.98277 0.09543 0.31338 0.00331 1874 35 1816 16 1757 16 75 423 444 0.95 0.11445 0.00210 4.99548 0.08870 0.31414 0.00269 1872 33 1819 15 1761 13 76 70 202 0.35 0.09617 0.00204 3.42213 0.06817 0.25677 0.00259 1551 40 1509 16 1473 13 77 132 139 0.95 0.16705 0.00342 10.70234 0.20411 0.46237 0.00495 2528 34 2498 18 2450 22 78 218 655 0.33 0.11785 0.00217 5.01873 0.09559 0.30645 0.00333 1924 33 1822 16 1723 16 79 34 641 0.05 0.11277 0.00215 4.80927 0.08912 0.30716 0.00349 1856 35 1787 16 1727 17 80 24 26 0.89 0.12278 0.00405 6.32231 0.20328 0.37488 0.00720 1998 58 2022 28 2052 34 81 40 338 0.12 0.11461 0.00259 4.91761 0.10137 0.30880 0.00338 1874 41 1805 17 1735 17 82 94 145 0.65 0.10690 0.00253 4.10572 0.09239 0.27703 0.00325 1747 44 1655 18 1576 16 83 54 94 0.57 0.11935 0.00304 5.70681 0.11764 0.33766 0.00401 1947 45 1932 18 1875 19 84 100 122 0.82 0.17497 0.00337 11.45736 0.20768 0.47158 0.00477 2606 33 2561 17 2490 21 86 74 256 0.29 0.05302 0.00209 0.27504 0.01049 0.03772 0.00061 328 89 247 8 239 4 87 164 428 0.38 0.05152 0.00142 0.28852 0.00784 0.04049 0.00051 265 65 257 6 256 3 88 71 161 0.44 0.05734 0.00363 0.33522 0.01812 0.04239 0.00089 506 136 294 14 268 6 89 103 137 0.75 0.16328 0.00312 10.65136 0.21085 0.47073 0.00555 2500 32 2493 18 2487 24 90 42 144 0.29 0.11331 0.00247 5.05904 0.13749 0.32234 0.00641 1854 40 1829 23 1801 31 91 93 470 0.20 0.11367 0.00228 5.38367 0.11038 0.34095 0.00373 1859 31 1882 18 1891 18 92 76 206 0.37 0.11355 0.00224 5.33316 0.10776 0.33798 0.00369 1857 35 1874 17 1877 18 93 69 135 0.51 0.11635 0.00249 5.06877 0.10647 0.31467 0.00387 1902 38 1831 18 1764 19 94 81 85 0.95 0.18674 0.00411 12.97482 0.44075 0.49448 0.01076 2714 36 2678 32 2590 46 96 118 225 0.53 0.12098 0.00214 6.08981 0.11346 0.36153 0.00421 1972 32 1989 16 1989 20 97 85 140 0.61 0.05087 0.00330 0.29496 0.01931 0.04232 0.00088 235 155 262 15 267 5 98 128 878 0.15 0.11700 0.00195 5.57812 0.09051 0.34156 0.00322 1911 30 1913 14 1894 15 99 107 187 0.57 0.15340 0.00291 8.95301 0.16528 0.41832 0.00455 2384 32 2333 17 2253 21 100 34 114 0.30 0.11835 0.00271 5.34523 0.11169 0.32501 0.00438 1932 36 1876 18 1814 21 101 210 536 0.39 0.12062 0.00257 4.92649 0.09684 0.29255 0.00331 1965 37 1807 17 1654 17 102 61 129 0.47 0.13337 0.00283 6.95652 0.15320 0.37424 0.00547 2143 37 2106 20 2049 26 103 119 320 0.37 0.11353 0.00218 4.64417 0.08863 0.29346 0.00340 1857 35 1757 16 1659 17 104 116 243 0.48 0.12390 0.00235 6.17806 0.11695 0.35860 0.00439 2013 29 2001 17 1976 21 105 268 738 0.36 0.11728 0.00244 5.15680 0.08818 0.30995 0.00325 1917 38 1846 15 1740 16 106 38 56 0.68 0.12007 0.00304 5.50669 0.13919 0.33138 0.00489 1957 40 1902 22 1845 24 107 108 406 0.26 0.13582 0.00249 6.22975 0.11543 0.33031 0.00327 2176 32 2009 16 1840 16 108 47 134 0.35 0.12096 0.00270 5.29765 0.11941 0.31512 0.00358 1972 39 1868 19 1766 18 109 31 52 0.60 0.11852 0.00315 5.43415 0.14509 0.33264 0.00512 1944 47 1890 23 1851 25 110 69 114 0.61 0.12069 0.00292 6.28712 0.15909 0.37699 0.00522 1966 42 2017 22 2062 24 111 76 160 0.48 0.12056 0.00278 6.12447 0.14825 0.36716 0.00458 1965 41 1994 21 2016 22 112 389 370 1.05 0.12338 0.00261 5.75566 0.12945 0.33724 0.00438 2006 37 1940 20 1873 21 113 75 110 0.69 0.13309 0.00292 7.24296 0.16085 0.39319 0.00440 2139 38 2142 20 2138 20 114 40 830 0.05 0.11428 0.00209 4.96045 0.09513 0.31302 0.00324 1869 33 1813 16 1756 16 115 91 133 0.68 0.12073 0.00286 5.74037 0.13436 0.34398 0.00414 1969 42 1937 20 1906 20 116 47 40 1.18 0.11038 0.00316 4.88784 0.13353 0.32455 0.00569 1806 52 1800 23 1812 28 117 54 138 0.39 0.05763 0.00305 0.30769 0.01577 0.03891 0.00073 517 117 272 12 246 5 118 43 418 0.10 0.11825 0.00222 4.87119 0.11859 0.29619 0.00511 1931 34 1797 21 1672 25 120 51 575 0.09 0.12121 0.00240 5.57970 0.11089 0.33121 0.00379 1976 35 1913 17 1844 18
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表 3 样品TW0701碎屑锆石LA-ICP-MS U-Pb年龄测试结果
Table 3 Sample TW0701 clastic zircon LA-ICP-MS U-Pb age test results
测试点 元素含量
（10−6）Th/U 同位素比值 年龄（Ma） Th U 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 207Pb/206Pb 1σ 207Pb/235U 1σ 206Pb/238U 1σ 1 156 183 0.85 0.05161 0.00239 0.32692 0.01188 0.04342 0.00070 333 103 287 9 274 4 2 256 261 0.98 0.04609 0.00230 0.13657 0.00658 0.02194 0.00038 400 -283 130 6 140 2 3 238 392 0.61 0.05042 0.00178 0.31852 0.01142 0.04577 0.00074 213 81 281 9 288 5 4 46 96 0.48 0.11575 0.00223 6.18811 0.13492 0.38387 0.00454 1892 34 2003 19 2094 21 5 101 185 0.55 0.05224 0.00197 0.37726 0.01384 0.05221 0.00075 295 92 325 10 328 5 6 262 351 0.75 0.05184 0.00176 0.32688 0.00913 0.04556 0.00057 280 78 287 7 287 4 7 91 182 0.50 0.04867 0.00252 0.36274 0.01549 0.05091 0.00119 132 122 314 12 320 7 8 46 233 0.20 0.11328 0.00215 4.95423 0.08842 0.31448 0.00345 1854 34 1812 15 1763 17 10 984 1238 0.79 0.04994 0.00123 0.31807 0.00748 0.04587 0.00061 191 28 280 6 289 4 11 24 53 0.45 0.05779 0.00353 0.58025 0.02947 0.07228 0.00168 520 131 465 19 450 10 12 131 618 0.21 0.04968 0.00158 0.30216 0.00850 0.04392 0.00059 189 74 268 7 277 4 13 92 136 0.67 0.05368 0.00336 0.31282 0.01859 0.04186 0.00086 367 143 276 14 264 5 14 111 693 0.16 0.05096 0.00140 0.30197 0.00801 0.04224 0.00046 239 63 268 6 267 3 15 106 272 0.39 0.05542 0.00168 0.55826 0.01465 0.07121 0.00091 428 67 450 10 443 5 16 176 717 0.25 0.05242 0.00135 0.33056 0.00811 0.04533 0.00054 306 59 290 6 286 3 17 53 77 0.69 0.05571 0.00313 0.39598 0.01886 0.04979 0.00106 439 126 339 14 313 7 18 85 221 0.38 0.05715 0.00221 0.34343 0.01285 0.04347 0.00070 498 90 300 10 274 4 19 86 190 0.45 0.05255 0.00249 0.29949 0.01307 0.04149 0.00084 309 107 266 10 262 5 20 70 175 0.40 0.04990 0.00203 0.35700 0.01386 0.05188 0.00083 191 92 310 10 326 5 21 78 131 0.60 0.05624 0.00331 0.33549 0.01596 0.04329 0.00094 461 131 294 12 273 6 22 82 507 0.16 0.05320 0.00160 0.30812 0.00911 0.04179 0.00054 345 67 273 7 264 3 23 74 101 0.73 0.05032 0.00258 0.36415 0.01849 0.05246 0.00098 209 119 315 14 330 6 24 60 263 0.23 0.11826 0.00216 6.12494 0.11481 0.37147 0.00372 1931 32 1994 16 2036 18 25 352 419 0.84 0.05524 0.00147 0.54409 0.01371 0.07107 0.00076 420 59 441 9 443 5 26 235 282 0.83 0.12576 0.00224 6.75325 0.14365 0.38630 0.00677 2039 31 2080 19 2106 31 27 39 66 0.59 0.09540 0.00227 3.49773 0.08293 0.26416 0.00310 1536 40 1527 19 1511 16 28 166 232 0.72 0.05134 0.00205 0.32030 0.01220 0.04529 0.00072 257 93 282 9 286 4 29 41 270 0.15 0.04986 0.00176 0.27514 0.01013 0.03986 0.00053 187 114 247 8 252 3 30 128 287 0.45 0.05114 0.00193 0.30455 0.01062 0.04303 0.00056 256 82 270 8 272 3 31 156 129 1.20 0.11449 0.00251 5.31964 0.11896 0.33458 0.00383 1872 40 1872 19 1861 19 32 85 164 0.52 0.05290 0.00216 0.30530 0.01198 0.04245 0.00074 324 93 271 9 268 5 33 145 336 0.43 0.11405 0.00219 5.41726 0.10182 0.34236 0.00389 1865 34 1888 16 1898 19 34 156 499 0.31 0.16089 0.00272 9.87425 0.16737 0.44176 0.00462 2465 29 2423 16 2358 21 35 37 97 0.38 0.05169 0.00257 0.34363 0.01565 0.04949 0.00089 272 118 300 12 311 5 37 146 848 0.17 0.05034 0.00114 0.30331 0.00713 0.04335 0.00051 209 47 269 6 274 3 38 149 762 0.20 0.05159 0.00129 0.29460 0.00724 0.04120 0.00051 333 57 262 6 260 3 39 100 400 0.25 0.11249 0.00204 4.93719 0.08742 0.31609 0.00360 1840 33 1809 15 1771 18 40 34 211 0.16 0.05480 0.00337 0.32182 0.01487 0.04298 0.00092 467 169 283 11 271 6 41 93 1851 0.05 0.05058 0.00116 0.35362 0.00800 0.05022 0.00062 220 52 307 6 316 4 42 131 223 0.59 0.05040 0.00193 0.30060 0.01108 0.04360 0.00065 213 89 267 9 275 4 43 50 67 0.74 0.17114 0.00394 10.82391 0.25548 0.44591 0.00702 2569 38 2508 22 2377 31 44 98 148 0.66 0.10998 0.00210 4.48359 0.09072 0.29452 0.00349 1799 34 1728 17 1664 17 45 78 297 0.26 0.05202 0.00178 0.27730 0.00875 0.03830 0.00053 287 78 249 7 242 3 46 42 283 0.15 0.05428 0.00233 0.31468 0.01370 0.04223 0.00066 383 96 278 11 267 4 47 70 456 0.15 0.05176 0.00163 0.29700 0.00935 0.04167 0.00057 276 68 264 7 263 4 48 87 579 0.15 0.04991 0.00154 0.29255 0.00903 0.04222 0.00052 191 72 261 7 267 3 49 91 180 0.51 0.05587 0.00233 0.36924 0.01500 0.04791 0.00071 456 94 319 11 302 4 50 137 131 1.05 0.05291 0.00335 0.28609 0.01639 0.03915 0.00072 324 144 255 13 248 4 52 23 297 0.08 0.11373 0.00369 5.48392 0.17082 0.34768 0.00576 1861 53 1898 27 1924 28 53 278 548 0.51 0.05057 0.00200 0.26808 0.01012 0.03895 0.00089 220 91 241 8 246 6 54 97 245 0.40 0.05337 0.00293 0.30341 0.01608 0.04185 0.00077 343 124 269 13 264 5 55 59 328 0.18 0.11572 0.00286 5.79376 0.13921 0.35986 0.00404 1891 40 1945 21 1981 19 56 135 734 0.18 0.05639 0.00181 0.32927 0.01012 0.04210 0.00056 478 72 289 8 266 3 57 85 105 0.82 0.05262 0.00359 0.28159 0.01739 0.03925 0.00082 322 156 252 14 248 5 58 40 315 0.13 0.05180 0.00188 0.29261 0.01056 0.04068 0.00069 276 88 261 8 257 4 59 204 327 0.62 0.05065 0.00334 0.27764 0.01736 0.03967 0.00066 233 154 249 14 251 4 60 132 241 0.55 0.05218 0.00227 0.29051 0.01179 0.04070 0.00067 300 100 259 9 257 4 61 157 592 0.27 0.05318 0.00160 0.29439 0.00844 0.04006 0.00048 345 67 262 7 253 3 62 89 156 0.57 0.05430 0.00258 0.30709 0.01363 0.04048 0.00067 383 107 272 11 256 4 63 151 375 0.40 0.05009 0.00184 0.29804 0.01014 0.04170 0.00058 198 81 265 8 263 4 64 139 402 0.34 0.11345 0.00201 4.34493 0.07944 0.27535 0.00317 1855 27 1702 15 1568 16 65 139 234 0.59 0.05237 0.00199 0.33173 0.01167 0.04633 0.00075 302 87 291 9 292 5 66 139 822 0.17 0.05066 0.00129 0.28609 0.00748 0.04057 0.00046 233 59 255 6 256 3 67 99 551 0.18 0.05266 0.00152 0.29859 0.00793 0.04100 0.00053 322 67 265 6 259 3 68 22 35 0.63 0.10216 0.00291 4.37224 0.12293 0.31048 0.00519 1665 53 1707 23 1743 26 69 67 635 0.11 0.11672 0.00204 5.66231 0.09473 0.34780 0.00344 1906 31 1926 14 1924 16 70 153 886 0.17 0.05120 0.00156 0.29631 0.00796 0.04078 0.00048 250 64 264 6 258 3 71 28 406 0.07 0.05054 0.00191 0.28152 0.00985 0.04039 0.00059 220 87 252 8 255 4 72 63 155 0.41 0.05195 0.00288 0.29644 0.01461 0.04092 0.00072 283 128 264 11 259 4 74 593 455 1.30 0.05172 0.00180 0.31942 0.01175 0.04486 0.00097 272 80 281 9 283 6 75 78 243 0.32 0.04918 0.00215 0.25087 0.01021 0.03709 0.00066 167 102 227 8 235 4 76 659 878 0.75 0.05524 0.00148 0.31907 0.00825 0.04147 0.00049 420 59 281 6 262 3 77 89 598 0.15 0.05193 0.00168 0.27889 0.00922 0.03876 0.00065 283 74 250 7 245 4 78 249 531 0.47 0.05692 0.00174 0.51251 0.01528 0.06472 0.00083 487 67 420 10 404 5 79 379 397 0.96 0.05435 0.00198 0.32239 0.01148 0.04280 0.00061 387 81 284 9 270 4 80 372 528 0.71 0.05906 0.00229 0.32660 0.01204 0.03994 0.00053 569 83 287 9 252 3 81 130 250 0.52 0.07458 0.00220 1.69424 0.04808 0.16305 0.00213 1057 59 1006 18 974 12 82 83 119 0.70 0.05527 0.00295 0.37222 0.01770 0.04959 0.00099 433 120 321 13 312 6 83 112 180 0.62 0.05287 0.00261 0.37180 0.01368 0.05013 0.00086 324 113 321 10 315 5 84 88 200 0.44 0.05027 0.00242 0.29248 0.01281 0.04280 0.00076 206 111 261 10 270 5 85 118 225 0.53 0.05207 0.00251 0.30962 0.01464 0.04327 0.00080 287 111 274 11 273 5 86 159 366 0.44 0.05851 0.00172 0.57222 0.01672 0.07049 0.00098 550 65 459 11 439 6 87 112 113 0.99 0.05231 0.00333 0.29114 0.01743 0.03981 0.00080 298 146 259 14 252 5 88 915 1992 0.46 0.05197 0.00140 0.14329 0.00405 0.01982 0.00028 283 63 136 4 126 2 89 192 163 1.18 0.05360 0.00316 0.29859 0.01662 0.04107 0.00072 354 133 265 13 259 4 90 61 271 0.22 0.05142 0.00270 0.31328 0.01467 0.04256 0.00060 261 88 277 11 269 4 91 40 322 0.12 0.07269 0.00175 1.25339 0.02772 0.12455 0.00147 1006 44 825 13 757 8 92 76 198 0.38 0.12198 0.00276 6.02095 0.13046 0.35597 0.00427 1987 39 1979 19 1963 20 93 164 856 0.19 0.05228 0.00147 0.31028 0.00830 0.04293 0.00055 298 65 274 6 271 3 94 42 386 0.11 0.05209 0.00155 0.28996 0.00898 0.04027 0.00054 300 73 259 7 254 3 95 66 109 0.61 0.09773 0.00240 3.56969 0.08466 0.26390 0.00317 1581 42 1543 19 1510 16 96 95 313 0.30 0.05471 0.00199 0.31967 0.01133 0.04229 0.00053 467 81 282 9 267 3 97 131 158 0.83 0.05325 0.00255 0.30637 0.01443 0.04217 0.00078 339 114 271 11 266 5 98 79 297 0.27 0.12197 0.00253 5.43941 0.11795 0.32086 0.00384 1987 37 1891 19 1794 19 100 73 182 0.40 0.11697 0.00284 5.03972 0.11991 0.31065 0.00374 1910 44 1826 20 1744 18 101 318 794 0.40 0.05210 0.00180 0.27494 0.00895 0.03739 0.00054 300 80 247 7 237 3 102 89 197 0.45 0.04812 0.00247 0.26425 0.01225 0.04099 0.00089 106 115 238 10 259 5 103 163 647 0.25 0.05285 0.00189 0.28776 0.00911 0.03844 0.00049 324 114 257 7 243 3 104 24 83 0.28 0.18393 0.00496 12.09493 0.34757 0.47404 0.00949 2689 44 2612 27 2501 42 105 231 620 0.37 0.05466 0.00180 0.31952 0.01003 0.04224 0.00057 398 77 282 8 267 4 106 69 566 0.12 0.04936 0.00169 0.27769 0.00914 0.04060 0.00056 165 80 249 7 257 3 107 118 224 0.53 0.05604 0.00271 0.39206 0.01510 0.05084 0.00092 454 112 336 11 320 6 108 122 189 0.65 0.05168 0.00250 0.32386 0.01239 0.04560 0.00081 272 111 285 10 287 5 109 132 352 0.37 0.13783 0.00309 6.36993 0.14346 0.33080 0.00473 2211 39 2028 20 1842 23 111 254 595 0.43 0.04981 0.00165 0.28761 0.00905 0.04149 0.00073 187 78 257 7 262 4 112 128 293 0.44 0.04834 0.00202 0.27617 0.01058 0.04026 0.00084 122 100 248 8 254 5 113 2120 1626 1.30 0.05470 0.00168 0.15324 0.00482 0.02006 0.00039 467 73 145 4 128 2 114 282 288 0.98 0.05544 0.00259 0.32414 0.01475 0.04202 0.00087 432 106 285 11 265 5 115 137 241 0.57 0.05567 0.00222 0.59847 0.02204 0.07419 0.00127 439 89 476 14 461 8 116 75 117 0.64 0.05550 0.00431 0.30869 0.02246 0.04053 0.00090 432 174 273 17 256 6 117 121 385 0.31 0.05482 0.00212 0.33636 0.01215 0.04429 0.00071 406 92 294 9 279 4 118 180 345 0.52 0.05404 0.00307 0.28753 0.01369 0.03833 0.00076 372 128 257 11 242 5 119 96 162 0.60 0.12114 0.00236 5.74152 0.11159 0.34057 0.00398 1973 34 1938 17 1889 19 121 303 999 0.30 0.05517 0.00136 0.33055 0.00850 0.04324 0.00059 420 54 290 6 273 4
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表 4 研究区周边各隆起岩石年代学研究成果
Table 4 Chronology research results of uplifts around the study area
隆起区 岩性 测试方法 年龄（Ma） 数据来源 索伦山隆起 辉长岩 SHRIMP锆石U-Pb、Ar-Ar 295～298 Miao et al.，2008 辉长岩、斜长花岗岩 SHRIMP锆石U-Pb 284～288 Jian et al.，2010 纯橄岩 SHRIMP锆石U-Pb 354～333 Jian et al.，2012 辉长岩、玄武岩 SHRIMP锆石U-Pb 278.5、273.7 Chen et al.，2012 玄武岩 LA-ICP-MS锆石U-Pb法 246～261 Chu et al.，2013 基性岩 LA-ICP-MS锆石U-Pb法 277 王炎阳等，2014 玄武岩、辉长岩 LA-ICP-MS锆石U-Pb法 276～273 柳志华等，2020 狼山—白云鄂博隆起 辉长闪长岩 LA-ICP-MS锆石U-Pb法 273.9 皮桥辉等，2010 变质酸性火山岩 SHRIMP锆石U-Pb 816.9～805 彭润民等，2010 花岗闪长岩、
黑云母花岗岩锆石U-Pb法 243～272 于延秋，2011 白云母二长花岗岩 LA-ICP-MS锆石U-Pb法 259.4 吴亚飞等，2013 闪长岩 TMS锆石U-Pb法 321～304 胡鸿飞等，2013 宝音图隆起 斜长角闪片岩 Sm-Nd全岩等时线 2485 徐备等，2000 Rb-Sr全岩等时线 623 变质基性岩 LA-ICP-MS锆石U-Pb法 895.5 滕飞等，2019 石英岩 LA-ICP-MS锆石U-Pb法 1284 、1319 、1395 基性火山岩 Sm-Nd全岩等时线 2496 、2486 孙立新等，2013 片麻状二长花岗岩 SHRIMP锆石U-Pb 1672
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表 5 研究区钻孔综合测井数据表
Table 5 Comprehensive logging data of boreholes in the study area
钻孔编号 深度（m） ω（U）（10−4） 数据来源 1ZK0003 55～78 ≥0.5 本研究 80～103 ≥2.0 本研究 1ZK0005 57～65 ≥0.5 本研究 1ZK0701 70～72 ≥0.5 本研究 80～84 ≥3.0 本研究 1ZK0702 51～53 ≥0.5 本研究 72～79 ≥0.5 本研究 92～96 ≥1.0 本研究 1ZK0705 32～40 ≥0.5 本研究 65～77 ≥0.8 本研究
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