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

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Samples with zircons analyzed by SHRIMP II are discussed below with their results presented in graphical form (concordia diagrams and histograms showing age probabilities) in Figures 9 to 12. The analytical methodology and the data from each individual zircon analysis by the SHRIMP are presented in Appendix 2. Table 1. Summary of Discover Abitibi TIMS results. Number on Fig. 2 Sample Number Rock Type Primary Age (Ma) Inheritance or Provenance Age(s) (Ma) Assemblage or Intrusion 1 04BHA-0333 Felsic debris flow 2712.3±2.8 2861.4±3.4 upper Kidd–Munro 2 04BHA-0297 Quartz+feldspar felsic 2714.6±1.2 upper Kidd–Munro flow 3 04BHA-0462 Granophyre 2704.8±1.4 Kamiskotia Gabbroic complex 4 03BHA-0382 Rhyolite 2700.0±1.1 upper Blake River 5 03BHA-0384 Felsic lapilli tuff 2701.1±1.4 upper Blake River 6 03BHA-0345 Felsic lapilli tuff 2698.6±1.3 upper Blake River 7 03BHA-0047 Felsic lapilli tuff 2703.1±1.2 lower Blake River 8 96JAA-0094 Rhyolite 2712.2±0.9 2853.6±1.4 upper Kidd–Munro 9 04JAA-0004 Conglomerate
Figure 3. U/Pb concordia plots of TIMS results from the Kamiskotia area. 7
Page 1: ISBN 0-7794-8652-8 THESE TERMS GOVE
Page 5: ONTARIO GEOLOGICAL SURVEY Open File
Page 9: Contents Abstract .................
Page 13: Appendix 1. Thermal Ionization Mass
Page 17: Miscellaneous Release—Data 155 Di
Page 21: The Timmins area and Kirkland Lake-
Page 25: Overview of Results from the Greens
Page 28 and 29: 3. The geophysical subproject funct
Page 30 and 31: The following Preliminary Maps have
Page 34 and 35: Figure 4. U/Pb concordia plots of T
Page 36 and 37: Figure 6. U/Pb concordia plot of TI
Page 38 and 39: Targeting of several of these overg
Page 40 and 41: Figure 10. U/Pb SHRIMP results from
Page 42 and 43: In northwest Cleaver Township, a fe
Page 44 and 45: SHRIMP U/Pb dating was carried out
Page 46 and 47: Stratigraphic Framework In this sec
Page 48 and 49: PACAUD ASSEMBLAGE The 2750 to 2735
Page 50 and 51: The iron formation and chert brecci
Page 52 and 53: (thickness) of banded iron-poor iro
Page 54 and 55: clast conglomerates at the top of t
Page 56 and 57: BLAKE RIVER ASSEMBLAGE Lower Part T
Page 58 and 59: The Krist formation consists of cal
Page 60 and 61: Timmins Area In the Timmins area, t
Page 62 and 63: Kirkland Lake-Larder Lake Area Hyde
Page 64 and 65: Intrusion Framework The plutonic ro
Page 66 and 67: The youngest dated synvolcanic mafi
Page 68 and 69: Albitite dikes are crosscut by gold
Page 70 and 71: Worming Geophysical Data Treatment
Page 72 and 73: In Timmins, the first generation of
Page 74 and 75: Figure 20. Geological sketch map of
Page 76 and 77: from Halfmoon Lake, only 2 km to th
Page 78 and 79: The Blake River Group is divided in
Page 80 and 81: Figure 22. Geological map of Munro
Page 82 and 83:
Mine stratigraphic succession, have
Page 84 and 85:
Figure 24. Geological map of Currie
Page 86 and 87:
Table 5. Simplified classification
Page 88 and 89:
mesocumulate). The Stoughton-Roquem
Page 90 and 91:
Shaw Dome Area GEOLOGICAL SETTING T
Page 92 and 93:
66 Figure 26. A generalized map of
Page 94 and 95:
1999) in their REE patterns and oth
Page 96 and 97:
plumbing system geometrically stabl
Page 98 and 99:
GOLD MINERALIZATION Production comm
Page 100 and 101:
The Narrows Break mineralized zone,
Page 102 and 103:
Table 7. Diagnostic mineral assembl
Page 104 and 105:
anomaly and the Dome Mine (Figures
Page 106 and 107:
Recommendations • Further testing
Page 108 and 109:
of the inversion product. (Recent a
Page 110 and 111:
the evidence for pre-Pacaud strata
Page 112 and 113:
plutonism suggests the onset of reg
Page 114 and 115:
Watkinson and Comba 1989; Gibson an
Page 116 and 117:
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 168 and 169:
Table A2. continued 204 U Th Pb* 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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