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

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ONTARIO GEOLOGICAL SURVEY Open File Report 6154 Overview of Results from the Greenstone Architecture Project: Discover Abitibi Initiative by J.A. Ayer, P.C. Thurston, R. Bateman, B. Dubé, H.L. Gibson, M.A. Hamilton, B. Hathway, S.M. Hocker, M.G. Houlé, G. Hudak, V.O. Ispolatov, B. Lafrance, C.M. Lesher, P.J. MacDonald, A.S. Péloquin, S.J. Piercey, L.E. Reed and P.H. Thompson 2005 Parts of this publication may be quoted if credit is given. It is recommended that reference to this publication be made in the following form: Ayer, J.A., Thurston, P.C., Bateman, R., Dubé, B., Gibson, H.L., Hamilton, M.A., Hathway, B., Hocker, S.M., Houlé, M.G., Hudak, G., Ispolatov, V.O., Lafrance, B., Lesher, C.M., MacDonald, P.J., Péloquin, A.S., Piercey, S.J., Reed, L.E. and Thompson, P.H. 2005. Overview of results from the Greenstone Architecture Project: Discover Abitibi Initiative; Ontario Geological Survey, Open File Report 6154, 146p. e Queen’s Printer for Ontario, 2005
Page 1: ISBN 0-7794-8652-8 THESE TERMS GOVE
Page 7: e Queen’s Printer for Ontario, 20
Page 11: Subproject Results ................
Page 15: 25. General geology of the Abitibi
Page 19: Abstract The Greenstone Architectur
Page 23: anticlinal culminations, whereas th
Page 27 and 28: Introduction The western part of th
Page 29 and 30: 6. The metamorphic subproject, base
Page 31 and 32: Geochronology The Greenstone Archit
Page 33 and 34: Figure 3. U/Pb concordia plots of T
Page 35 and 36: Figure 5. U/Pb concordia plot of TI
Page 37 and 38: Figure 7. U/Pb concordia plots of T
Page 39 and 40: Figure 9. U/Pb SHRIMP results from
Page 41 and 42: Figure 11. U/Pb SHRIMP results from
Page 43 and 44: (Figure 10A-2), with a peak age mod
Page 45 and 46: the youngest ages are not sufficien
Page 47 and 48: Table 2. Summary of southern Abitib
Page 49 and 50: Table 4. Locations of chert breccia
Page 51 and 52: arkosic conglomerate, and metre-sca
Page 53 and 54: previously identified as the Coulso
Page 55 and 56:
An internal contact within the lowe
Page 57 and 58:
Upper Part The upper Blake River as
Page 59 and 60:
Porcupine assemblage (Ayer, Amelin
Page 61 and 62:
The volcanic breccia sample from th
Page 63 and 64:
Corfu, Jackson and Sutcliffe (1991)
Page 65 and 66:
strongly foliated. As these intrusi
Page 67 and 68:
phase of the composite intrusion th
Page 69 and 70:
and the North Timmins-Crawchest reg
Page 71 and 72:
The larger batholithic complexes wh
Page 73 and 74:
Subproject Results VMS MINERALIZATI
Page 75 and 76:
KVC are to the east or northeast, e
Page 77 and 78:
Although no significant VMS mineral
Page 79 and 80:
fluids were channelized within the
Page 81 and 82:
Munro-Currie Subproject The goal of
Page 83 and 84:
north of the Warden Hill fault. Thu
Page 85 and 86:
The Currie (Tillex) showing occurs
Page 87 and 88:
2. Source of Sulphur: The magma mus
Page 89 and 90:
komatiitic dunite in massive cumula
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Upper Komatiitic Horizon The Upper
Page 93 and 94:
sheet flow facies, channelized shee
Page 95 and 96:
Deformation postdating D4 is minor.
Page 97 and 98:
S2 is the earliest regional fabric
Page 99 and 100:
Mineralization of Kirkland Lake cam
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area (ca. 2700-2696 Ma: Péloquin a
Page 103 and 104:
77 Figure 27. Simplified page-size
Page 105 and 106:
A regional-scale project of this ki
Page 107 and 108:
GEOPHYSICS SUBPROJECT Magnetic and
Page 109 and 110:
ocks looking east. Note the geology
Page 111 and 112:
In contrast, the volcanic rocks of
Page 113 and 114:
Carmichael and Hodgson 1995). Rocks
Page 115 and 116:
is, in turn, overprinted by a later
Page 117 and 118:
▪ ▪ providing an improved under
Page 119 and 120:
A new metamorphic framework has pro
Page 121 and 122:
Barrie, C.T. and Corfu, F. 1999. Th
Page 123 and 124:
——— 2002. U-Pb geochronology
Page 125 and 126:
Groves, D.I., Goldfarb, R.J., Rober
Page 127 and 128:
Jackson, S.L., Fyon, J.A. and Corfu
Page 129 and 130:
——— 1993b. U-Pb geochronology
Page 131 and 132:
——— 2003. Giant gold deposits
Page 133 and 134:
Williams, H.R., Stott, G.M. and Thu
Page 135 and 136:
Appendix 1 Thermal Ionization Mass
Page 137 and 138:
GEOCHRONOLOGY RESULTS AND DISCUSSIO
Page 139 and 140:
03BHA-0345 Felsic lapilli tuff, Gen
Page 141 and 142:
comprising a variety of essentially
Page 143 and 144:
analysis, and the data are presente
Page 145 and 146:
03PJM-131 Quartz-feldspar porphyry,
Page 147 and 148:
2690 Ma, are equivalent within erro
Page 149 and 150:
04MGH-0523 Intermediate volcaniclas
Page 151 and 152:
subhedral prisms, slightly flat to
Page 153 and 154:
Based on this relatively small samp
Page 155 and 156:
An age of 2699.8±3.6 Ma for the rh
Page 157 and 158:
A primary magmatic crystallization
Page 159 and 160:
Table A1. continued 206 Sample Anal
Page 161 and 162:
Table A1. continued 206 Sample Anal
Page 163 and 164:
SENSITIVE HIGH RESOLUTION ION MICRO
Page 165 and 166:
Table A2. continued 204 U Th Pb* Pb
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 174 and 175:
ISSN 0826 -9580 ISBN 0 -7794 -8652
Page 176:
Figure 2. Distribution of lithotect
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