Regional Geology, Sioux Lookout Orogenic Belt - Geology Ontario

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ONTARIO GEOLOGICAL SURVEY Open File Report 6017 Regional Geology of the Sioux Lookout Orogenic Belt, Western Wabigoon Subprovince: Stages of Archean Volcanism, Sedimentation, Tectonism and Mineralization by J.R. Devaney 2000 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: Devaney, J.R. 2000. Regional geology of the Sioux Lookout orogenic belt, western Wabigoon Subprovince: stages of Archean volcanism, sedimentation, tectonism and mineralization; Ontario Geological Survey, Open File Report 6017, 151p. e Queen’s Printer for Ontario, 2000
Page 1: Ontario Geological Survey Open File
Page 9: Southwest Echo Township ...........
Page 13: Early Stage Orogenic Belt Developme
Page 17: Abstract The Sioux Lookout orogenic
Page 21 and 22: Introduction The Sioux Lookout orog
Page 23 and 24: A large number of assessment file r
Page 25 and 26: The term “Neepawa Group” is mis
Page 27 and 28: Northern Volcanic belt from central
Page 29 and 30: amount of interbedded BIF units in
Page 31 and 32: limited by poor quality exposures,
Page 33 and 34: with small intermediate--felsic vol
Page 35 and 36: Interpretation The conglomeratic as
Page 37 and 38: separated by faulting into the two
Page 39 and 40: Miles Lake At the west end of Miles
Page 41 and 42: (plagioclase--phyric clasts are ver
Page 43 and 44: Part of this outcrop (about 1 m of
Page 45 and 46: Pillows are locally abundant and fo
Page 47 and 48: geochemical data (see “Geochemist
Page 49 and 50: CENTRAL VOLCANIC BELT: PICKEREL ARM
Page 51 and 52: BIF units, sub--exhalite alteration
Page 53 and 54:
One outcrop contains important exam
Page 55 and 56:
Most of the apparent paleocurrents
Page 57 and 58:
change) from eastern pyroclastic fa
Page 59 and 60:
Quartz veins with low to flat dips
Page 61 and 62:
Observations made during the presen
Page 63 and 64:
REE characteristics of the Patara F
Page 65 and 66:
6a--c and Figures 12a,c) are common
Page 67 and 68:
STAGES 0, 1 The hypothesis that the
Page 69 and 70:
subduction zone was likely to have
Page 71 and 72:
structures, see: Christie--Blick an
Page 73 and 74:
Laramide--type uplift, south--verge
Page 75 and 76:
and contrast sharply with structura
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southeast--striking schistosity alo
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thrusting may be difficult or impos
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Lookout orogenic belt. This would c
Page 83 and 84:
1988) interpreted the basal unit of
Page 85 and 86:
In contrast, the ca. 2719-2713 Ma a
Page 87 and 88:
interpretations of an appropriately
Page 89 and 90:
The predominantly basaltic Stages 1
Page 91 and 92:
Devaney 1997, 1999a) and other part
Page 93 and 94:
strata (flat to 30 o dip southeast)
Page 95 and 96:
misleading because it normally sugg
Page 97 and 98:
Blackburn, C.E., Hinz, P., Storey,
Page 99 and 100:
Devaney, J.R. 1997. Stratigraphy an
Page 101 and 102:
Groves, D.I. and Foster, R.P. 1991.
Page 103 and 104:
Larbi, Y., Stevenson, R., Breaks, F
Page 105 and 106:
Pearce, J.A. and Peate, D.W. 1995.
Page 107 and 108:
Steidtmann, J.R. and Schmitt, J.G.
Page 109 and 110:
89 Figure 1a. Location and general
Page 111 and 112:
91 Figure 2. Sioux Lookout orogenic
Page 113 and 114:
Figure 4. Stratovolcanic transgress
Page 115 and 116:
Figure 5b. Geochemical sample locat
Page 117 and 118:
Figure 7. Plots of selected high fi
Page 119 and 120:
Figure 8. Continued 99
Page 121 and 122:
Figure 9. Continued 101
Page 123 and 124:
Figure 11. Chondrite--normalized ra
Page 125 and 126:
Figure 11. Continued. m) Northeast
Page 127 and 128:
Figure 12. Continued. g) dioritic r
Page 129 and 130:
Figure 13. Rb versus Y+Nb discrimin
Page 131 and 132:
Figure 14. Continued. 111
Page 133 and 134:
Figure 16. Th/Nb versus Nb/Y discri
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Figure 18. Adakite classification d
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Figure 20. Extended trace element p
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Figure 22a. Cross--sectional cartoo
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Figure 23. Semi--schematic map of t
Page 143 and 144:
Figure 25. Stage 5 sedimentation an
Page 145 and 146:
Figure 27. Cartoon scenario for dra
Page 147 and 148:
Figure 29. Sinistral--sense positiv
Page 149 and 150:
Figure 31. Stage 6 sedimentation an
Page 151 and 152:
Figure 33. The proposed lineament p
Page 153 and 154:
Table 1. Major and selected trace e
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Table 1. Continued Sample 94JRD--00
Page 157 and 158:
Table 1. Continued. Sample 94JRD--0
Page 159 and 160:
Table 1. Continued. Sample 94JRD--0
Page 161 and 162:
Table 1. Continued. Sample 94JRD--B
Page 163 and 164:
Table 1. Continued. Sample 95JRD--B
Page 165 and 166:
Table 2. Classification of unaltere
Page 167 and 168:
Table 3. Average major oxide compos
Page 170 and 171:
Table 7. Summary of discrimination
Page 174:
ISSN 0826--9580 ISBN 0--7778--9540-
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Regional Geology, Sioux Lookout Orogenic Belt - Geology Ontario

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