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

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Table A2. continued 204 U Th Pb* Pb f206 207 206 Pb/ Pb ± 1σ Disc. Corr. 206 204 Spot (ppm) (ppm) Th/U (ppm) (ppb) Pb/ Pb (%) 207 235 206 238 207 206 Pb/ U ± 1σ Pb/ U ± 1σ Pb/ Pb ± 1σ Age (Ma) (%) Coeff. 04JAA-0003, Porcupine assemblage wacke, continued… 37.2 224 141 0.649 135 16 5992 0.29 13.0152 ± 0.1771 0.51089 ± 0.00624 0.18477 ± 0.00086 2696.1 ± 7.7 1.6 0.941 15.2 76 66 0.894 48 4 8514 0.20 13.0175 ± 0.2057 0.51101 ± 0.00673 0.18475 ± 0.00134 2696.0 ± 12.0 1.6 0.890 29.1 131 177 1.396 90 3 16776 0.10 12.9752 ± 0.1737 0.50949 ± 0.00594 0.18471 ± 0.00097 2695.6 ± 8.7 1.9 0.921 21.1 113 34 0.314 64 3 14312 0.12 13.1206 ± 0.1816 0.51630 ± 0.00601 0.18431 ± 0.00113 2692.0 ± 10.2 0.4 0.897 3.1 141 166 1.216 93 2 33979 0.05 12.8584 ± 0.1759 0.50701 ± 0.00583 0.18394 ± 0.00112 2688.7 ± 10.1 2.0 0.896 15.1 90 109 1.257 61 3 15542 0.11 13.0198 ± 0.1807 0.51357 ± 0.00604 0.18387 ± 0.00111 2688.1 ± 10.0 0.7 0.902 37.1 287 127 0.457 165 15 8215 0.21 12.9250 ± 0.1659 0.50985 ± 0.00591 0.18386 ± 0.00078 2688.0 ± 7.1 1.5 0.944 13.1 92 91 1.021 58 3 14815 0.12 12.7417 ± 0.1780 0.50268 ± 0.00595 0.18384 ± 0.00112 2687.8 ± 10.1 2.8 0.902 18.1 91 76 0.866 57 7 6134 0.28 12.9223 ± 0.1885 0.50983 ± 0.00624 0.18383 ± 0.00120 2687.7 ± 10.9 1.4 0.895 33.1 128 63 0.508 77 6 9925 0.18 13.2518 ± 0.2042 0.52323 ± 0.00733 0.18369 ± 0.00090 2686.5 ± 8.2 -1.2 0.949 22.1 89 74 0.855 56 6 6055 0.29 12.8801 ± 0.1853 0.50893 ± 0.00588 0.18355 ± 0.00133 2685.2 ± 12.1 1.5 0.866 40.1 28 19 0.676 17 12 1116 1.55 13.1588 ± 0.3351 0.52020 ± 0.00791 0.18346 ± 0.00341 2684.4 ± 31.1 -0.7 0.689 44.1 212 145 0.706 128 17 5462 0.32 12.9223 ± 0.1622 0.51163 ± 0.00564 0.18318 ± 0.00087 2681.9 ± 7.9 0.8 0.926 26.1 137 127 0.958 87 16 3832 0.45 12.8940 ± 0.1891 0.51074 ± 0.00593 0.18310 ± 0.00140 2681.2 ± 12.7 1.0 0.857 10.1 69 68 1.022 43 7 4079 0.43 12.4655 ± 0.1881 0.49381 ± 0.00598 0.18309 ± 0.00139 2681.0 ± 12.7 4.2 0.866 30.1 93 79 0.869 58 10 4067 0.43 12.6618 ± 0.2124 0.50398 ± 0.00688 0.18221 ± 0.00149 2673.1 ± 13.6 1.9 0.875 1.2 476 290 0.630 267 7 29028 0.06 12.0295 ± 0.1367 0.48346 ± 0.00514 0.18046 ± 0.00052 2657.1 ± 4.8 5.2 0.968 40.2 26 15 0.581 15 24 503 3.44 12.4562 ± 0.4154 0.50693 ± 0.00796 0.17821 ± 0.00491 2636.3 ± 46.5 -0.3 0.574 1.1 157 146 0.957 92 2 25887 0.07 11.5292 ± 0.2135 0.47093 ± 0.00668 0.17756 ± 0.00182 2630.2 ± 17.2 6.5 0.835 03RJB-18972-6, Porcupine sandstone, south of PDDZ, Whitney Township (E491548, N5372704), # 21 on Fig. 2. 7.1 95 61 0.663 58 24 1731 1.00 13.3490 ± 0.1899 0.50845 ± 0.00571 0.19041 ± 0.00142 2745.7 ± 12.3 4.2 0.855 12.1 188 93 0.509 111 12 7085 0.25 13.4732 ± 0.1649 0.51573 ± 0.00568 0.18947 ± 0.00079 2737.6 ± 6.8 2.5 0.942 8.1 452 326 0.745 283 17 11767 0.15 13.6085 ± 0.1527 0.52224 ± 0.00560 0.18899 ± 0.00042 2733.4 ± 3.7 1.1 0.980 3.1 325 89 0.281 187 8 17652 0.10 13.7067 ± 0.1501 0.52733 ± 0.00546 0.18852 ± 0.00047 2729.3 ± 4.1 0.0 0.974 6.1 157 40 0.263 88 23 3041 0.57 13.4030 ± 0.1865 0.51748 ± 0.00645 0.18785 ± 0.00091 2723.4 ± 8.0 1.6 0.939 15.1 96 38 0.408 55 18 2387 0.73 13.1765 ± 0.1945 0.51096 ± 0.00649 0.18703 ± 0.00114 2716.2 ± 10.1 2.5 0.912 13.1 105 80 0.792 63 23 1941 0.89 12.7006 ± 0.1857 0.49712 ± 0.00555 0.18529 ± 0.00151 2700.8 ± 13.5 4.5 0.833 14.1 77 35 0.468 44 11 2947 0.59 13.0331 ± 0.1819 0.51018 ± 0.00582 0.18528 ± 0.00125 2700.7 ± 11.2 2.0 0.877 2.1 237 490 2.136 187 11 9438 0.18 13.1180 ± 0.1500 0.51520 ± 0.00547 0.18467 ± 0.00058 2695.2 ± 5.2 0.7 0.963 4.1 494 994 2.078 388 24 9092 0.19 13.1558 ± 0.1406 0.51725 ± 0.00529 0.18447 ± 0.00038 2693.4 ± 3.4 0.3 0.982 5.2 204 293 1.488 143 6 14795 0.12 13.0101 ± 0.1497 0.51216 ± 0.00546 0.18424 ± 0.00059 2691.4 ± 5.3 1.2 0.961 10.1 613 371 0.625 367 44 6205 0.28 13.0607 ± 0.1963 0.51418 ± 0.00620 0.18422 ± 0.00140 2691.3 ± 12.6 0.8 0.866 5.3 523 1088 2.149 414 19 11943 0.15 13.1099 ± 0.1482 0.51625 ± 0.00550 0.18418 ± 0.00049 2690.9 ± 4.5 0.3 0.972 1.1 742 431 0.600 449 37 8985 0.19 13.1345 ± 0.2367 0.51999 ± 0.00767 0.18320 ± 0.00159 2682.0 ± 14.4 -0.8 0.879 6.2 269 49 0.186 133 29 3743 0.46 11.7457 ± 0.1599 0.47106 ± 0.00568 0.18084 ± 0.00090 2660.6 ± 8.3 7.8 0.931 11.1 1176 743 0.653 649 33 14828 0.12 10.8083 ± 0.1793 0.47765 ± 0.00767 0.16412 ± 0.00043 2498.5 ± 4.4 -0.9 0.988 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). 144
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. 03RJB-18973-10, Porcupine sandstone, Hoyle Formation, Hoyle Township (E492148, N5375256), #18 on Fig. 2. 12.1 196 122 0.640 122 16 5577 0.31 13.9474 ± 0.1771 0.52789 ± 0.00568 0.19162 ± 0.00106 2756.2 ± 9.1 1.1 0.902 3.1 90 14 0.166 49 12 3341 0.52 13.1819 ± 0.2670 0.51187 ± 0.00742 0.18678 ± 0.00233 2714.0 ± 20.7 2.2 0.792 14.1 30 18 0.601 18 6 2119 0.82 13.2186 ± 0.2601 0.51571 ± 0.00697 0.18590 ± 0.00236 2706.2 ± 21.1 1.1 0.768 13.1 176 216 1.267 118 7 11056 0.16 12.9640 ± 0.1551 0.50652 ± 0.00555 0.18563 ± 0.00067 2703.8 ± 6.0 2.8 0.954 4.2 51 19 0.378 29 16 1411 1.23 13.0893 ± 0.2596 0.51179 ± 0.00653 0.18549 ± 0.00254 2702.6 ± 22.7 1.7 0.730 18.1 74 53 0.744 45 26 1240 1.40 12.9692 ± 0.2093 0.50714 ± 0.00631 0.18547 ± 0.00164 2702.4 ± 14.7 2.6 0.840 17.1 105 62 0.610 62 15 3173 0.55 12.9618 ± 0.1936 0.50701 ± 0.00650 0.18541 ± 0.00115 2701.9 ± 10.3 2.6 0.911 8.1 157 37 0.240 86 4 19365 0.09 13.0178 ± 0.1634 0.50926 ± 0.00588 0.18539 ± 0.00068 2701.7 ± 6.1 2.2 0.957 4.1 141 26 0.188 78 15 4148 0.42 13.2411 ± 0.1618 0.51932 ± 0.00556 0.18492 ± 0.00087 2697.5 ± 7.8 0.1 0.924 1.1 145 90 0.644 86 5 12780 0.14 12.7861 ± 0.1703 0.50225 ± 0.00589 0.18464 ± 0.00093 2695.0 ± 8.3 3.2 0.927 5.1 172 57 0.341 97 3 25349 0.07 13.0691 ± 0.1626 0.51337 ± 0.00568 0.18463 ± 0.00083 2695.0 ± 7.4 1.1 0.934 16.1 65 28 0.447 37 16 1762 0.98 12.8809 ± 0.2045 0.50673 ± 0.00619 0.18436 ± 0.00161 2692.5 ± 14.5 2.3 0.838 10.1 182 63 0.356 102 12 6731 0.26 12.9400 ± 0.1717 0.50919 ± 0.00624 0.18431 ± 0.00070 2692.0 ± 6.3 1.8 0.959 7.1 170 53 0.322 95 10 7458 0.23 12.9069 ± 0.1779 0.50790 ± 0.00603 0.18431 ± 0.00104 2692.0 ± 9.4 2.0 0.913 11.1 187 148 0.819 115 11 7592 0.23 12.8783 ± 0.1614 0.50741 ± 0.00566 0.18408 ± 0.00083 2690.0 ± 7.4 2.0 0.935 15.1 32 9 0.297 17 7 2040 0.85 12.7847 ± 0.2384 0.50432 ± 0.00641 0.18386 ± 0.00223 2688.0 ± 20.2 2.5 0.763 9.1 158 79 0.516 92 8 8696 0.20 12.9676 ± 0.1509 0.51194 ± 0.00538 0.18371 ± 0.00071 2686.7 ± 6.4 1.0 0.945 2.1 155 31 0.205 84 18 3840 0.45 12.8251 ± 0.2400 0.50863 ± 0.00823 0.18288 ± 0.00139 2679.1 ± 12.6 1.3 0.915 6.1 223 118 0.548 132 11 8979 0.19 12.9491 ± 0.1569 0.51383 ± 0.00546 0.18278 ± 0.00085 2678.2 ± 7.7 0.2 0.925 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). 145
Page 1:
ISBN 0-7794-8652-8 THESE TERMS GOVE
Page 5:
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-
Page 25:
Overview of Results from the Greens
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3. The geophysical subproject funct
Page 30 and 31:
The following Preliminary Maps have
Page 32 and 33:
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
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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 168 and 169: 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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