This sample belongs to: Carl Hoiland

Sample Details
Aliquot Name: FT-15
IGSN:
Stratigraphic Formation Name: Prospect Mountain Quartzite
Stratigraphic Age:
Rock Type: Feldspathic quartzite
Mineral: Zircon
Latitude: 39.24278
Longitude: -114.13667
Internal Uncertainty Level:
External Uncertainty 206/238 (% two sigma): 1.34
External Uncertainty 206/207 (% two sigma): 0.75
Analysis Purpose: DetritalSpectrum
Laboratory Name: University of Arizona LaserChron Center
Analyst Name: Carl Hoiland
Aliquot Reference: Hoiland, C., Hourigan, J., and Miller, E., 2021, Evidence for Large Departures from Lithostatic Pressure During Late Cretaceous Metamorphism in the Northern Snake Range Metamorphic Core Complex, Nevada, in GSA Special Paper “Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, Foreland and Post-Orogenic Slab Rollback (180-20 Ma)”.
Aliquot Instrumental Method: LA-ICPMS
Aliquot Instrumental Reference: Gehrels, G.E., Valencia, V., and Ruiz, J., 2008, Enhanced precision, accuracy, efficiency, and spatial resolution of U-Pb ages by laser ablation-multicollector-inductively coupled plasma-mass spectrometry: Geochemistry, Geophysics, Geosystems, v. 9, Q03017, doi:10.1029/2007GC001805.
Aliquot Instrumental Reference:


Spot(s)
Analysis Name U 206Pb/204Pb U/Th 206Pb/207Pb ± (%) 207Pb/235U ± (%) 206Pb/238U ± (%) error corr. 206Pb/238U Age ± (Ma) 207Pb/235U Age ± (Ma) 206Pb/207Pb Age ± (Ma) Best age ± (Ma) Conc.
Spot 12 186 57994 1.7 17.2145 1.5 0.6814 3.3 0.0851 2.9 0.89 526.3 14.9 527.6 13.6 533.2 32.9 526.3 14.9 98.7
Spot 70 790 64204 0.8 17.2354 0.6 0.684 1.7 0.0855 1.5 0.93 528.9 7.8 529.2 6.8 530.5 13.6 528.9 7.8 99.7
Spot 71 1410 64122 0.8 17.2721 0.3 0.6884 1.4 0.0862 1.3 0.98 533.2 6.8 531.8 5.6 525.8 6.3 533.2 6.8 101.4
Spot 61 396 50135 1.5 17.2744 0.7 0.7006 2.4 0.0878 2.3 0.96 542.4 11.9 539.2 10.0 525.6 15.5 542.4 11.9 103.2
Spot 58 43 33985 1.6 13.4782 2.1 1.8231 3.7 0.1782 3.0 0.82 1057.2 29.3 1053.8 24.1 1046.8 42.5 1046.8 42.5 101.0
Spot 02 25 24574 2.0 13.2334 3.6 1.9719 3.8 0.1893 1.3 0.35 1117.4 13.5 1106.0 25.5 1083.6 71.2 1083.6 71.2 103.1
Spot 100 39 25364 2.3 13.1841 1.5 1.8634 2.3 0.1782 1.7 0.74 1057.0 16.5 1068.2 15.1 1091.1 30.8 1091.1 30.8 96.9
Spot 53 493 12171 0.7 13.0937 0.4 1.8246 8.3 0.1733 8.2 1.00 1030.1 78.5 1054.3 54.2 1104.8 8.3 1104.8 8.3 93.2
Spot 18 372 19669 1.4 13.0922 0.4 1.7866 1.5 0.1696 1.5 0.97 1010.2 14.0 1040.6 10.0 1105.1 7.4 1105.1 7.4 91.4
Spot 68 83 32235 0.6 11.7987 0.8 2.5768 1.6 0.2205 1.3 0.86 1284.6 15.6 1294.1 11.4 1309.9 15.5 1309.9 15.5 98.1
Spot 86 126 31595 1.3 11.5257 0.5 2.85 0.8 0.2382 0.6 0.80 1377.5 8.1 1368.8 6.1 1355.2 9.5 1355.2 9.5 101.6
Spot 74 39 36179 1.3 11.4588 1.5 2.9243 2.9 0.243 2.5 0.86 1402.4 31.5 1388.2 22.1 1366.4 28.9 1366.4 28.9 102.6
Spot 11 99 28071 0.7 11.4424 1.0 2.8575 1.6 0.2371 1.2 0.77 1371.8 15.3 1370.8 12.0 1369.2 19.5 1369.2 19.5 100.2
Spot 65 199 23598 0.7 11.4351 0.3 2.8687 2.3 0.2379 2.3 0.99 1375.9 28.1 1373.7 17.3 1370.4 6.6 1370.4 6.6 100.4
Spot 46 113 36931 1.1 11.3828 0.6 2.8532 2.0 0.2355 1.9 0.96 1363.5 23.8 1369.7 15.3 1379.2 11.6 1379.2 11.6 98.9
Spot 30 94 59004 0.9 11.3541 0.9 2.7583 2.7 0.2271 2.5 0.95 1319.5 30.4 1344.3 20.0 1384.1 16.4 1384.1 16.4 95.3
Spot 43 27 24451 0.7 11.2956 2.8 2.9013 3.4 0.2377 1.9 0.57 1374.7 24.0 1382.3 25.4 1394.0 52.9 1394.0 52.9 98.6
Spot 25 120 77043 1.0 11.147 0.6 2.9202 1.1 0.2361 0.8 0.79 1366.3 10.3 1387.2 8.0 1419.4 12.2 1419.4 12.2 96.3
Spot 14 53 71017 1.2 11.1067 1.3 3.085 1.6 0.2485 1.0 0.63 1430.8 13.1 1429.0 12.5 1426.3 24.2 1426.3 24.2 100.3
Spot 24 59 19071 0.8 11.0986 0.8 3.2352 2.8 0.2604 2.6 0.95 1492.0 35.1 1465.6 21.4 1427.7 15.8 1427.7 15.8 104.5
Spot 40 45 27989 1.0 11.0709 1.1 3.1805 1.7 0.2554 1.2 0.74 1466.1 16.2 1452.4 12.8 1432.4 21.1 1432.4 21.1 102.4
Spot 04 64 56432 1.0 11.055 1.4 3.1301 2.2 0.251 1.7 0.79 1443.4 22.5 1440.1 17.0 1435.2 26.1 1435.2 26.1 100.6
Spot 79 38 36096 1.4 11.03 1.5 3.2357 1.8 0.2588 1.1 0.58 1483.9 14.0 1465.8 14.1 1439.5 28.1 1439.5 28.1 103.1
Spot 90 65 53694 1.5 11.0106 0.8 3.228 2.2 0.2578 2.1 0.94 1478.4 27.3 1463.9 17.1 1442.8 14.8 1442.8 14.8 102.5
Spot 64 117 50154 1.5 11.0053 0.6 3.1695 2.3 0.253 2.3 0.97 1453.8 29.5 1449.8 18.1 1443.8 11.5 1443.8 11.5 100.7
Spot 57 69 49118 10.5 10.9988 0.5 2.9299 1.4 0.2337 1.4 0.94 1354.0 16.6 1389.7 10.9 1444.9 9.3 1444.9 9.3 93.7
Spot 96 124 35108 1.3 9.9008 0.4 4.0451 1.3 0.2905 1.2 0.94 1643.9 17.5 1643.3 10.4 1642.6 8.1 1642.6 8.1 100.1
Spot 35 170 88016 3.6 9.6147 0.3 4.053 1.4 0.2826 1.4 0.98 1604.6 19.5 1644.9 11.4 1696.8 4.7 1696.8 4.7 94.6
Spot 27 195 412611 5.0 9.5841 0.3 4.3651 1.0 0.3034 0.9 0.96 1708.3 13.9 1705.8 8.0 1702.7 4.8 1702.7 4.8 100.3
Spot 80 63 75269 2.7 9.5708 0.7 4.4187 1.6 0.3067 1.4 0.90 1724.5 21.6 1715.8 13.2 1705.2 13.0 1705.2 13.0 101.1
Spot 34 222 309252 2.1 9.5646 0.3 4.3723 1.2 0.3033 1.2 0.97 1707.7 18.2 1707.1 10.3 1706.4 5.3 1706.4 5.3 100.1
Spot 28 56 31037 1.8 9.5225 0.5 4.3219 1.4 0.2985 1.3 0.92 1683.8 18.6 1697.6 11.3 1714.6 10.0 1714.6 10.0 98.2
Spot 39 442 12688 2.3 9.3443 1.2 4.541 9.9 0.3077 9.8 0.99 1729.6 149.3 1738.5 82.7 1749.2 22.4 1749.2 22.4 98.9
Spot 99 34 25829 0.9 9.3204 1.3 4.6748 2.2 0.316 1.7 0.79 1770.2 27.0 1762.7 18.4 1753.9 24.6 1753.9 24.6 100.9
Spot 08 194 38800 1.3 9.2786 0.4 4.2342 3.9 0.2849 3.8 0.99 1616.2 54.8 1680.7 31.7 1762.1 8.1 1762.1 8.1 91.7
Spot 87 373 18876 1.8 9.2431 0.7 4.4397 3.3 0.2976 3.2 0.98 1679.5 48.0 1719.8 27.5 1769.1 13.0 1769.1 13.0 94.9
Spot 97 151 70567 2.2 9.2416 0.5 4.6335 1.9 0.3106 1.8 0.97 1743.5 28.0 1755.3 15.9 1769.4 9.0 1769.4 9.0 98.5
Spot 83 282 46080 0.9 9.227 0.2 4.5153 2.0 0.3022 2.0 0.99 1702.1 29.3 1733.8 16.4 1772.3 3.9 1772.3 3.9 96.0
Spot 54 203 17848 2.1 9.2253 0.3 4.7443 2.9 0.3174 2.9 0.99 1777.2 44.6 1775.1 24.2 1772.7 5.5 1772.7 5.5 100.3
Spot 85 434 129197 3.1 9.2141 0.3 4.9036 3.2 0.3277 3.2 1.00 1827.2 51.0 1802.9 27.2 1774.9 5.1 1774.9 5.1 102.9
Spot 72 144 158925 1.6 9.2078 0.6 4.6063 2.4 0.3076 2.3 0.97 1729.0 35.5 1750.4 20.1 1776.1 10.1 1776.1 10.1 97.3
Spot 93 200 119881 1.4 9.2057 0.3 4.3777 4.7 0.2923 4.6 1.00 1652.9 67.7 1708.1 38.5 1776.5 6.0 1776.5 6.0 93.0
Spot 29 73 45585 0.9 9.2043 0.5 4.4426 0.8 0.2966 0.5 0.72 1674.3 8.1 1720.3 6.3 1776.8 9.7 1776.8 9.7 94.2
Spot 69 58 41562 0.9 9.1931 0.7 4.7691 1.5 0.318 1.4 0.90 1779.8 21.7 1779.5 13.0 1779.0 12.2 1779.0 12.2 100.0
Spot 82 261 52976 1.4 9.1916 0.3 4.4451 2.3 0.2963 2.3 0.99 1673.1 33.5 1720.8 19.0 1779.3 5.4 1779.3 5.4 94.0
Spot 31 210 76272 0.9 9.1886 0.2 4.6932 2.1 0.3128 2.0 0.99 1754.3 31.4 1766.0 17.2 1779.9 4.3 1779.9 4.3 98.6
Spot 51 246 33340 1.0 9.1874 0.2 4.7666 0.7 0.3176 0.6 0.94 1778.1 9.6 1779.0 5.5 1780.1 4.0 1780.1 4.0 99.9
Spot 95 117 65560 0.8 9.1863 0.4 4.8071 0.9 0.3203 0.8 0.91 1791.1 13.0 1786.1 7.6 1780.4 6.7 1780.4 6.7 100.6
Spot 76 178 350846 0.8 9.183 0.3 4.863 2.6 0.3239 2.5 0.99 1808.7 40.1 1795.9 21.6 1781.0 5.9 1781.0 5.9 101.6
Spot 89 443 203815 10.3 9.1826 0.2 4.8932 2.1 0.3259 2.1 1.00 1818.4 33.0 1801.1 17.6 1781.1 3.0 1781.1 3.0 102.1
Spot 67 148 91809 1.1 9.1791 0.3 4.8759 1.5 0.3246 1.5 0.98 1812.2 23.6 1798.1 12.9 1781.8 5.4 1781.8 5.4 101.7
Spot 20 134 140336 1.1 9.1701 0.3 4.8344 1.9 0.3215 1.9 0.99 1797.2 30.0 1790.9 16.3 1783.6 4.7 1783.6 4.7 100.8
Spot 62 548 134988 4.8 9.1694 0.1 4.9522 1.5 0.3293 1.5 1.00 1835.2 23.9 1811.2 12.7 1783.7 2.3 1783.7 2.3 102.9
Spot 01 534 303490 6.4 9.164 0.1 4.7214 1.2 0.3138 1.2 1.00 1759.4 18.8 1771.0 10.2 1784.8 0.9 1784.8 0.9 98.6
Spot 32 322 88850 3.4 9.1634 0.2 4.5139 1.0 0.3 1.0 0.99 1691.2 14.8 1733.5 8.4 1784.9 2.9 1784.9 2.9 94.8
Spot 56 304 231973 1.3 9.1611 0.2 4.6496 1.0 0.3089 0.9 0.98 1735.4 14.3 1758.2 8.0 1785.4 3.6 1785.4 3.6 97.2
Spot 10 341 252524 3.4 9.1588 0.1 4.8593 1.6 0.3228 1.6 1.00 1803.3 25.3 1795.2 13.6 1785.8 1.5 1785.8 1.5 101.0
Spot 44 501 237781 2.3 9.1537 0.1 4.7214 1.5 0.3135 1.5 1.00 1757.7 22.7 1771.1 12.4 1786.8 2.3 1786.8 2.3 98.4
Spot 07 153 245927 2.0 9.1527 0.3 4.79 1.6 0.318 1.6 0.99 1779.8 25.1 1783.2 13.7 1787.0 4.6 1787.0 4.6 99.6
Spot 81 689 688726 1.4 9.1509 0.1 4.8694 1.5 0.3232 1.5 1.00 1805.2 24.0 1797.0 12.9 1787.4 1.9 1787.4 1.9 101.0
Spot 23 194 213127 1.4 9.1398 0.2 4.9048 1.2 0.3251 1.2 0.98 1814.7 18.3 1803.1 9.9 1789.6 4.0 1789.6 4.0 101.4
Spot 45 98 95145 1.6 9.1261 0.4 5.1133 1.2 0.3384 1.2 0.95 1879.2 19.0 1838.3 10.4 1792.4 7.2 1792.4 7.2 104.8
Spot 19 121 82037 1.4 9.1208 0.5 4.7273 1.0 0.3127 0.9 0.86 1754.1 13.1 1772.1 8.4 1793.4 9.3 1793.4 9.3 97.8
Spot 91 113 82696 0.6 9.0152 0.6 4.9536 1.2 0.3239 1.1 0.90 1808.7 17.6 1811.4 10.5 1814.6 10.0 1814.6 10.0 99.7
Spot 75 379 49632 2.1 8.839 0.2 4.9195 4.1 0.3154 4.1 1.00 1767.1 63.0 1805.6 34.5 1850.4 3.2 1850.4 3.2 95.5
Spot 21 61 61591 1.9 8.7956 0.6 5.0217 3.8 0.3203 3.8 0.99 1791.4 58.8 1823.0 32.3 1859.2 11.6 1859.2 11.6 96.4
Spot 22 58 44651 2.0 8.7512 0.6 5.2521 1.8 0.3333 1.7 0.95 1854.6 27.3 1861.1 15.2 1868.4 10.0 1868.4 10.0 99.3
Spot 26 145 155043 3.2 8.7378 0.3 5.3115 2.1 0.3366 2.0 0.99 1870.3 33.0 1870.7 17.5 1871.1 5.4 1871.1 5.4 100.0
Spot 78 102 109457 1.1 5.5972 0.2 12.3205 1.4 0.5001 1.4 0.99 2614.4 30.3 2629.1 13.3 2640.5 2.5 2640.5 2.5 99.0
Spot 17 122 68083 0.9 5.4583 0.2 12.5653 2.1 0.4974 2.1 1.00 2602.7 45.0 2647.6 19.8 2682.1 2.5 2682.1 2.5 97.0
Spot 60 1374 24901 1.0 17.3647 0.6 0.5383 1.8 0.0678 1.7 0.94 422.8 6.8 437.3 6.2 514.1 12.8 422.8 6.8 82.2
Spot 88 50 2096 1.2 19.3578 6.8 0.6108 6.9 0.0858 1.6 0.23 530.4 8.0 484.1 26.7 270.3 155.0 530.4 8.0 196.2
Spot 49 51 2444 1.3 19.293 9.4 0.6166 9.7 0.0863 2.5 0.26 533.4 12.9 487.7 37.8 278.0 216.0 533.4 12.9 191.9
Spot 59 601 12700 0.6 13.5673 0.5 1.1815 11.2 0.1163 11.2 1.00 709.0 75.1 792.0 61.6 1033.4 9.3 1033.4 9.3 68.6
Spot 37 768 12085 1.6 13.4962 0.6 1.1626 19.4 0.1138 19.4 1.00 694.8 127.7 783.2 106.3 1044.0 12.5 1044.0 12.5 66.5
Spot 38 301 19319 1.8 13.3304 0.5 1.5234 7.1 0.1473 7.1 1.00 885.7 58.4 939.9 43.4 1069.0 10.1 1069.0 10.1 82.9
Spot 66 552 4364 2.2 12.3916 1.7 1.1279 7.5 0.1014 7.3 0.97 622.4 43.4 766.7 40.5 1214.1 34.0 1214.1 34.0 51.3
Spot 52 30 4370 1.6 11.8162 2.5 2.7844 6.7 0.2386 6.3 0.93 1379.5 77.8 1351.4 50.4 1307.0 48.0 1307.0 48.0 105.5
Spot 63 472 10341 0.7 11.7596 0.7 1.4674 8.9 0.1252 8.9 1.00 760.2 63.6 917.1 53.7 1316.4 13.1 1316.4 13.1 57.7
Spot 73 570 8189 1.9 10.1427 0.6 2.2313 4.1 0.1641 4.1 0.99 979.7 37.4 1190.9 29.1 1597.7 10.4 1597.7 10.4 61.3
Spot 42 260 23402 2.0 9.8897 0.4 3.0768 3.3 0.2207 3.3 0.99 1285.5 38.2 1426.9 25.3 1644.7 7.3 1644.7 7.3 78.2
Spot 41 728 8440 7.1 9.7896 0.7 1.4557 9.5 0.1034 9.5 1.00 634.0 57.3 912.2 57.3 1663.5 13.5 1663.5 13.5 38.1
Spot 50 508 6637 3.4 9.7174 2.8 3.0299 9.3 0.2135 8.9 0.96 1247.6 101.2 1415.2 71.4 1677.2 51.0 1677.2 51.0 74.4
Spot 09 242 29012 1.1 9.541 0.3 3.4086 2.6 0.2359 2.5 0.99 1365.2 31.3 1506.4 20.1 1711.0 5.5 1711.0 5.5 79.8
Spot 94 616 25115 15.7 9.4518 0.6 1.9532 16.5 0.1339 16.5 1.00 810.0 125.5 1099.5 111.2 1728.2 10.4 1728.2 10.4 46.9
Spot 48 657 54508 8.2 9.4089 0.4 2.6528 3.7 0.181 3.7 0.99 1072.6 36.2 1315.4 27.2 1736.6 7.8 1736.6 7.8 61.8
Spot 84 172 20946 2.7 9.3555 0.5 3.4361 3.6 0.2331 3.6 0.99 1351.0 43.3 1512.7 28.2 1747.0 9.3 1747.0 9.3 77.3
Spot 92 782 57466 5.0 9.3339 0.3 3.2579 2.3 0.2205 2.3 0.99 1284.8 26.7 1471.1 17.9 1751.3 4.7 1751.3 4.7 73.4
Spot 13 149 37841 2.6 9.3113 0.7 2.5373 4.4 0.1714 4.4 0.99 1019.6 41.2 1282.8 32.2 1755.7 12.2 1755.7 12.2 58.1
Spot 06 698 195497 6.8 9.3071 1.5 5.1593 7.7 0.3483 7.6 0.98 1926.3 126.3 1845.9 65.9 1756.5 27.9 1756.5 27.9 109.7
Spot 05 79 8046 2.1 9.3051 1.6 3.0762 4.7 0.2076 4.5 0.94 1216.0 49.5 1426.8 36.4 1756.9 29.2 1756.9 29.2 69.2
Spot 36 245 31657 1.8 9.2846 0.3 3.9819 2.4 0.2681 2.4 0.99 1531.3 32.4 1630.5 19.4 1760.9 4.9 1760.9 4.9 87.0
Spot 16 111 103133 1.8 9.2669 0.4 3.2314 7.6 0.2172 7.6 1.00 1267.0 87.3 1464.7 59.0 1764.4 7.8 1764.4 7.8 71.8
Spot 55 546 34291 3.9 9.2608 0.8 2.7536 4.2 0.1849 4.1 0.98 1094.0 41.4 1343.1 31.3 1765.6 15.3 1765.6 15.3 62.0
Spot 15 275 44448 2.4 9.2516 0.3 3.4325 3.6 0.2303 3.6 1.00 1336.2 43.4 1511.9 28.4 1767.4 5.2 1767.4 5.2 75.6
Spot 77 373 51431 1.4 9.2264 0.8 5.1254 9.7 0.343 9.6 1.00 1900.9 158.8 1840.3 82.4 1772.4 14.2 1772.4 14.2 107.3
Spot 33 89 42611 0.8 9.2038 0.5 4.0374 5.6 0.2695 5.6 1.00 1538.3 76.1 1641.8 45.5 1776.9 9.5 1776.9 9.5 86.6
Spot 03 983 2886 4.7 7.4467 4.7 1.2389 7.6 0.0669 5.9 0.78 417.5 23.8 818.4 42.5 2154.8 82.6 2154.8 82.6 19.4
Spot 98 145 46438 2.6 5.862 0.6 9.4984 2.8 0.4038 2.7 0.98 2186.6 50.8 2387.4 25.7 2563.4 9.9 2563.4 9.9 85.3
filename:22500.xml
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