Overview of Results from the Greenstone ... - Geology Ontario

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Table A2. continued 204 U Th Pb* Pb f206 207 Pb/ 206 Pb ± 1σ Disc. Corr. 206 Spot (ppm) (ppm) Th/U (ppm) (ppb) Pb/ 204 Pb (%) 207 Pb/ 235 U ± 1σ 206 Pb/ 238 U ± 1σ 207 Pb/ 206 Pb ± 1σ Age (Ma) (%) Coeff. BNB01-T-01, Timiskaming sandstone, continued... 26.1 157 50 0.330 87 9 7812 0.22 12.7898 ± 0.1778 0.50380 ± 0.00610 0.18412 ± 0.00101 2690.4 ± 9.1 2.7 0.920 1.1 313 168 0.554 180 0 490196 0.00 12.6528 ± 0.2772 0.49875 ± 0.01037 0.18399 ± 0.00088 2689.2 ± 7.9 3.6 0.976 20.1 118 81 0.706 71 2 25920 0.07 12.8321 ± 0.1707 0.50584 ± 0.00575 0.18398 ± 0.00104 2689.1 ± 9.4 2.3 0.907 5.1 103 44 0.440 58 3 13180 0.13 12.7874 ± 0.2255 0.50453 ± 0.00563 0.18382 ± 0.00227 2687.6 ± 20.5 2.5 0.721 33.1 154 32 0.217 84 15 4649 0.37 12.8797 ± 0.1764 0.50834 ± 0.00593 0.18376 ± 0.00108 2687.1 ± 9.7 1.7 0.905 34.1 160 29 0.185 86 16 4493 0.39 12.8608 ± 0.1761 0.50897 ± 0.00595 0.18326 ± 0.00107 2682.6 ± 9.7 1.4 0.907 18.1 85 107 1.300 57 10 3634 0.48 12.7840 ± 0.2465 0.50623 ± 0.00722 0.18316 ± 0.00207 2681.7 ± 18.9 1.9 0.813 42.1 135 67 0.512 77 18 3193 0.54 12.6231 ± 0.1734 0.50021 ± 0.00546 0.18303 ± 0.00130 2680.5 ± 11.8 3.0 0.859 13.1 122 102 0.862 76 3 19493 0.09 12.7436 ± 0.2024 0.50612 ± 0.00605 0.18262 ± 0.00166 2676.8 ± 15.1 1.7 0.824 7.1 95 81 0.882 59 4 11361 0.15 12.6712 ± 0.2043 0.50336 ± 0.00633 0.18257 ± 0.00158 2676.4 ± 14.4 2.2 0.847 8.1 239 177 0.762 145 7 14172 0.12 12.6678 ± 0.1621 0.50371 ± 0.00588 0.18240 ± 0.00073 2674.8 ± 6.6 2.1 0.951 3.1 36 27 0.773 22 5 3390 0.51 12.4106 ± 0.3111 0.49547 ± 0.00991 0.18167 ± 0.00233 2668.1 ± 21.4 3.4 0.862 31.1 214 101 0.488 124 6 15929 0.11 12.7718 ± 0.1617 0.51023 ± 0.00567 0.18154 ± 0.00088 2667.0 ± 8.1 0.4 0.925 39.1 41 32 0.813 25 14 1311 1.32 12.4788 ± 0.2851 0.50154 ± 0.00665 0.18045 ± 0.00307 2657.1 ± 28.5 1.7 0.674 02JAA-0017, Timiskaming sandstone detrital zircons in auriferous quartz vein, Sedimentary Trough, Dome Mine, Tisdale Township (see Ayer et al., 2003), #11 on Fig. 2. 15.1 145 98 0.704 89 19 3315 0.52 13.2612 ± 0.1963 0.51536 ± 0.00679 0.18663 ± 0.00099 2712.7 ± 8.8 1.5 0.935 5.1 106 62 0.602 63 9 5409 0.32 13.0691 ± 0.1830 0.50925 ± 0.00610 0.18613 ± 0.00110 2708.3 ± 9.8 2.5 0.908 12.1 133 129 1.001 85 23 2470 0.70 12.8698 ± 0.1986 0.50291 ± 0.00658 0.18560 ± 0.00124 2703.6 ± 11.1 3.5 0.903 6.1 147 95 0.667 87 17 3714 0.47 12.8510 ± 0.2178 0.50349 ± 0.00589 0.18512 ± 0.00201 2699.3 ± 18.1 3.2 0.771 17.1 127 59 0.478 73 29 1908 0.91 12.9095 ± 0.1851 0.50585 ± 0.00593 0.18509 ± 0.00128 2699.0 ± 11.5 2.7 0.878 9.1 153 79 0.534 90 7 9626 0.18 13.0864 ± 0.1713 0.51281 ± 0.00606 0.18508 ± 0.00080 2698.9 ± 7.2 1.4 0.945 16.1 46 36 0.817 27 31 632 2.74 12.2766 ± 0.3032 0.48109 ± 0.00740 0.18508 ± 0.00324 2698.9 ± 29.2 7.5 0.712 18.1 190 196 1.065 123 6 13576 0.13 12.9620 ± 0.1519 0.50939 ± 0.00550 0.18455 ± 0.00063 2694.2 ± 5.6 1.8 0.958 10.1 70 36 0.540 41 4 6856 0.25 12.9149 ± 0.1770 0.50779 ± 0.00575 0.18446 ± 0.00118 2693.4 ± 10.7 2.1 0.885 8.1 102 89 0.902 64 9 4832 0.36 12.8026 ± 0.1703 0.50502 ± 0.00556 0.18386 ± 0.00115 2688.0 ± 10.3 2.4 0.885 1.1 53 40 0.774 30 10 2087 0.83 11.9253 ± 0.2537 0.47133 ± 0.00693 0.18350 ± 0.00250 2684.8 ± 22.7 8.8 0.772 2.1 167 122 0.751 99 21 3461 0.50 12.4402 ± 0.1622 0.49473 ± 0.00552 0.18237 ± 0.00101 2674.6 ± 9.2 3.8 0.908 11.1 97 72 0.765 59 8 5259 0.33 12.7148 ± 0.1837 0.50593 ± 0.00588 0.18227 ± 0.00132 2673.6 ± 12.1 1.6 0.867 13.1 171 117 0.711 103 14 5465 0.32 12.7737 ± 0.1783 0.50836 ± 0.00592 0.18224 ± 0.00116 2673.4 ± 10.6 1.1 0.892 7.1 226 212 0.969 142 20 4847 0.36 12.6431 ± 0.1646 0.50438 ± 0.00559 0.18180 ± 0.00101 2669.4 ± 9.3 1.7 0.905 19.1 192 182 0.979 122 24 3523 0.49 12.6586 ± 0.4506 0.50510 ± 0.01755 0.18176 ± 0.00082 2669.0 ± 7.5 1.5 0.992 14.1 164 118 0.742 99 19 3676 0.47 12.6198 ± 0.1610 0.50385 ± 0.00550 0.18166 ± 0.00098 2668.1 ± 9.0 1.7 0.908 3.1 163 102 0.648 95 13 5218 0.33 12.4321 ± 0.1545 0.49640 ± 0.00543 0.18164 ± 0.00085 2667.9 ± 7.8 3.2 0.928 20.1 100 51 0.532 57 43 1022 1.70 12.5801 ± 0.2143 0.50472 ± 0.00693 0.18077 ± 0.00154 2660.0 ± 14.2 1.2 0.868 Uncertainties are reported at 1σ (absolute) and are calculated by numerical propagation of all known sources of error. Pb* = radiogenic Pb; f206 (%): Percentage of 206Pb which is common. Disc (%) = Percent discordance along a chord to origin for the given 207Pb/206Pb age; Corr. Coeff. = Correlation coefficient (rho). 142
Table A2. continued 204 U Th Pb* Pb f206 207 Pb/ 206 Pb ± 1σ Disc. Corr. 206 Spot (ppm) (ppm) Th/U (ppm) (ppb) Pb/ 204 Pb (%) 207 Pb/ 235 U ± 1σ 206 Pb/ 238 U ± 1σ 207 Pb/ 206 Pb ± 1σ Age (Ma) (%) Coeff. 04JAA-0003, Porcupine assemblage wacke, below Timiskaming unconformity, Porcupine Syncline, E Tisdale Twp.(E484309, N5371290), #15 on Fig. 2. 40.3 47 28 0.627 28 17 1225 1.42 13.1885 ± 0.3651 0.49710 ± 0.00734 0.19242 ± 0.00416 2763.0 ± 36.0 7.1 0.631 25.1 111 72 0.671 67 8 6057 0.29 13.4285 ± 0.2212 0.51073 ± 0.00641 0.19069 ± 0.00176 2748.2 ± 15.3 3.9 0.831 47.1 21 14 0.680 12 9 994 1.74 13.3984 ± 0.4068 0.51039 ± 0.00838 0.19039 ± 0.00449 2745.6 ± 39.3 3.9 0.638 5.1 48 29 0.623 29 4 5150 0.34 13.3587 ± 0.2496 0.50988 ± 0.00708 0.19002 ± 0.00207 2742.3 ± 18.0 3.8 0.816 38.1 59 54 0.937 37 8 3306 0.52 13.1459 ± 0.2805 0.50412 ± 0.00688 0.18913 ± 0.00280 2734.6 ± 24.6 4.6 0.726 16.1 70 29 0.429 41 7 4312 0.40 13.3076 ± 0.2340 0.51240 ± 0.00707 0.18836 ± 0.00175 2727.9 ± 15.4 2.7 0.851 42.1 46 69 1.558 32 2 10208 0.17 13.1189 ± 0.2335 0.50548 ± 0.00686 0.18823 ± 0.00187 2726.8 ± 16.5 4.0 0.833 24.1 59 32 0.559 35 9 2805 0.62 13.1576 ± 0.2221 0.50746 ± 0.00620 0.18805 ± 0.00192 2725.2 ± 17.0 3.6 0.799 9.1 136 78 0.590 82 9 6955 0.25 13.4287 ± 0.1814 0.51792 ± 0.00581 0.18805 ± 0.00118 2725.2 ± 10.4 1.6 0.888 45.1 116 116 1.038 77 16 3349 0.52 13.5210 ± 0.2127 0.52211 ± 0.00606 0.18782 ± 0.00174 2723.2 ± 15.4 0.7 0.811 34.1 62 70 1.176 41 11 2355 0.74 13.0487 ± 0.2367 0.50467 ± 0.00678 0.18752 ± 0.00199 2720.6 ± 17.6 3.9 0.814 14.1 28 22 0.812 17 8 1625 1.07 13.3108 ± 0.3069 0.51487 ± 0.00717 0.18750 ± 0.00313 2720.4 ± 27.8 1.9 0.695 23.1 42 20 0.489 24 4 4229 0.41 13.0867 ± 0.2295 0.50718 ± 0.00668 0.18714 ± 0.00188 2717.2 ± 16.7 3.3 0.823 31.1 30 24 0.813 19 9 1559 1.11 13.2833 ± 0.3410 0.51499 ± 0.00894 0.18707 ± 0.00315 2716.6 ± 28.1 1.7 0.758 28.1 51 39 0.787 32 13 1762 0.98 13.3381 ± 0.3334 0.51721 ± 0.01028 0.18704 ± 0.00241 2716.3 ± 21.4 1.3 0.859 35.1 59 46 0.814 37 9 2921 0.59 13.3254 ± 0.3770 0.51702 ± 0.00824 0.18693 ± 0.00401 2715.3 ± 35.8 1.3 0.658 8.1 79 70 0.910 49 6 5304 0.33 12.8575 ± 0.1921 0.49892 ± 0.00601 0.18691 ± 0.00139 2715.1 ± 12.3 4.7 0.869 32.1 104 94 0.928 65 8 5453 0.32 12.9278 ± 0.2438 0.50213 ± 0.00828 0.18673 ± 0.00137 2713.6 ± 12.1 4.1 0.923 4.1 86 45 0.538 50 0 250627 0.01 12.9809 ± 0.1962 0.50469 ± 0.00632 0.18654 ± 0.00131 2711.9 ± 11.7 3.5 0.887 20.1 38 40 1.069 25 10 1667 1.04 12.8550 ± 0.2821 0.49999 ± 0.00750 0.18647 ± 0.00266 2711.3 ± 23.7 4.4 0.765 2.1 131 84 0.658 80 7 7813 0.22 13.2296 ± 0.1864 0.51498 ± 0.00644 0.18632 ± 0.00095 2709.9 ± 8.5 1.4 0.933 12.1 101 96 0.984 66 12 3831 0.45 13.4597 ± 0.2007 0.52418 ± 0.00598 0.18623 ± 0.00154 2709.2 ± 13.7 -0.3 0.835 41.1 71 72 1.059 46 9 3491 0.50 13.0627 ± 0.3300 0.50877 ± 0.00729 0.18621 ± 0.00355 2709.0 ± 31.8 2.6 0.662 32.2 171 113 0.686 103 9 8636 0.20 13.0534 ± 0.1734 0.50859 ± 0.00558 0.18615 ± 0.00116 2708.4 ± 10.4 2.6 0.884 6.1 123 80 0.672 74 2 33445 0.05 13.1015 ± 0.2039 0.51061 ± 0.00644 0.18609 ± 0.00143 2707.9 ± 12.7 2.2 0.872 27.1 96 82 0.882 61 7 6496 0.27 13.1786 ± 0.1914 0.51368 ± 0.00607 0.18607 ± 0.00132 2707.7 ± 11.7 1.6 0.875 50.1 51 38 0.772 31 7 3124 0.56 13.1925 ± 0.2270 0.51437 ± 0.00720 0.18602 ± 0.00157 2707.3 ± 14.0 1.4 0.874 49.1 36 20 0.571 21 20 800 2.17 12.9251 ± 0.3722 0.50479 ± 0.01012 0.18571 ± 0.00340 2704.5 ± 30.6 3.2 0.776 39.1 72 66 0.949 46 8 3883 0.45 13.0654 ± 0.2781 0.51041 ± 0.00639 0.18565 ± 0.00292 2704.0 ± 26.2 2.1 0.681 48.1 109 41 0.390 63 28 1762 0.98 13.2091 ± 0.1845 0.51638 ± 0.00575 0.18552 ± 0.00133 2702.9 ± 11.9 0.9 0.861 17.1 110 96 0.903 69 4 11857 0.15 12.9174 ± 0.1698 0.50523 ± 0.00591 0.18543 ± 0.00087 2702.1 ± 7.8 3.0 0.935 36.1 352 229 0.672 217 7 22789 0.08 13.3655 ± 0.1580 0.52290 ± 0.00558 0.18538 ± 0.00073 2701.6 ± 6.5 -0.4 0.944 46.1 160 100 0.647 96 5 13139 0.13 13.0680 ± 0.1525 0.51172 ± 0.00539 0.18521 ± 0.00072 2700.1 ± 6.5 1.6 0.944 11.1 153 214 1.442 106 1 100000 0.02 12.9498 ± 0.1556 0.50750 ± 0.00552 0.18507 ± 0.00072 2698.8 ± 6.5 2.4 0.946 19.1 67 50 0.781 40 8 3443 0.50 12.7695 ± 0.2116 0.50046 ± 0.00649 0.18506 ± 0.00163 2698.7 ± 14.6 3.7 0.849 33.2 179 142 0.818 114 3 25050 0.07 13.2895 ± 0.1781 0.52106 ± 0.00639 0.18498 ± 0.00075 2698.0 ± 6.7 -0.3 0.954 43.1 18 8 0.481 10 29 285 6.08 12.6290 ± 0.5315 0.49537 ± 0.00869 0.18490 ± 0.00668 2697.3 ± 60.9 4.7 0.524 7.1 112 118 1.089 72 4 13263 0.13 12.8922 ± 0.1968 0.50572 ± 0.00648 0.18489 ± 0.00126 2697.3 ± 11.3 2.7 0.896 continued… Uncertainties are reported at 1σ (absolute) and are calculated by numerical propagation of all known sources of error. Pb* = radiogenic Pb; f206 (%): Percentage of 206Pb which is common. Disc (%) = Percent discordance along a chord to origin for the given 207Pb/206Pb age; Corr. Coeff. = Correlation coefficient (rho). 143
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ISBN 0-7794-8652-8 THESE TERMS GOVE
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ONTARIO GEOLOGICAL SURVEY Open File
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Contents Abstract .................
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Appendix 1. Thermal Ionization Mass
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Miscellaneous Release—Data 155 Di
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The Timmins area and Kirkland Lake-
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Overview of Results from the Greens
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3. The geophysical subproject funct
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The following Preliminary Maps have
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Samples with zircons analyzed by SH
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Figure 4. U/Pb concordia plots of T
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Figure 6. U/Pb concordia plot of TI
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Targeting of several of these overg
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Figure 10. U/Pb SHRIMP results from
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In northwest Cleaver Township, a fe
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SHRIMP U/Pb dating was carried out
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Stratigraphic Framework In this sec
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PACAUD ASSEMBLAGE The 2750 to 2735
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The iron formation and chert brecci
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(thickness) of banded iron-poor iro
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clast conglomerates at the top of t
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BLAKE RIVER ASSEMBLAGE Lower Part T
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The Krist formation consists of cal
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Timmins Area In the Timmins area, t
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Kirkland Lake-Larder Lake Area Hyde
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Intrusion Framework The plutonic ro
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The youngest dated synvolcanic mafi
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Albitite dikes are crosscut by gold
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Worming Geophysical Data Treatment
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In Timmins, the first generation of
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Figure 20. Geological sketch map of
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from Halfmoon Lake, only 2 km to th
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The Blake River Group is divided in
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Figure 22. Geological map of Munro
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Mine stratigraphic succession, have
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Figure 24. Geological map of Currie
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Table 5. Simplified classification
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mesocumulate). The Stoughton-Roquem
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Shaw Dome Area GEOLOGICAL SETTING T
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66 Figure 26. A generalized map of
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1999) in their REE patterns and oth
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plumbing system geometrically stabl
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GOLD MINERALIZATION Production comm
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The Narrows Break mineralized zone,
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Table 7. Diagnostic mineral assembl
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anomaly and the Dome Mine (Figures
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Recommendations • Further testing
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of the inversion product. (Recent a
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the evidence for pre-Pacaud strata
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plutonism suggests the onset of reg
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Watkinson and Comba 1989; Gibson an
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The Kirkland Lake giant gold deposi
Page 118 and 119: The Timmins and Kirkland Lake-Larde
Page 120 and 121: References Ames, D.E., Bleeker, W.,
Page 122 and 123: Bleeker, W., Parrish, R.R. and Sage
Page 124 and 125: Galley, A.G., Pilote, P. and Davis,
Page 126 and 127: Heather, K.B., Percival, J.A., Mose
Page 128 and 129: Lesher, C.M., 1989. Komatiite-assoc
Page 130 and 131: Péloquin, A.S., Verpaelst, P., and
Page 132 and 133: Stern, R.A. 1997. The GSC sensitive
Page 134 and 135: 108 This page left blank intentiona
Page 136 and 137: THERMAL IONIZATION MASS SPECTROMETR
Page 138 and 139: 04BHA-0462 Granophyre, Kamiskotia G
Page 140 and 141: contrastingly have been dated near
Page 142 and 143: The revised age of 2672.8±1.1 Ma f
Page 144 and 145: fraction (A1a) also overlaps concor
Page 146 and 147: 04JAA-0010 Albitite dike cutting Ti
Page 148 and 149: Therefore, on geochronological grou
Page 150 and 151: Three individual grains were analyz
Page 152 and 153: 03VOI-0422-1 Trachytic lava, Timisk
Page 154 and 155: 03SJP-115-1 Monzonite, Clifford sto
Page 156 and 157: the original Corfu (1993) age, only
Page 158 and 159: Table A1. U/Pb isotopic data for zi
Page 160 and 161: 206 Sample Analysis Description Wei
Page 162 and 163: Appendix 2 Sensitive High-Resolutio
Page 164 and 165: Table A2. Ion microprobe (SHRIMP II
Page 166 and 167: Table A2. continued Struct. U Th Pb
Page 170 and 171: Table A2. continued 204 U Th Pb* Pb
Page 172: Metric Conversion Table Conversion
Page 175 and 176: Chart A. Magnetic and Gravity Three
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