western quebec and southern ontario - Department of Geology

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$Fayek & Kyser 2000 uraninite fractionations.pdf - Queen's University$

Figure 3.9: a) Shot point and seismic lines with Moho depth in the study areaand b) P-wave velocity velocity gradient models for each........................................42Figure 4.1: Distribution of rms arrival time residuals for events in the study area....46Figure 4.2: Distribution of focal depths for events.....................................................47Figure 4.3: Samples of focal mechanis solution quality (number of plarities)...........52Figure 4.4: Spatial distribution of fault plane solutions for 50 events in the studyarea.............................................................................................................................57Figure 4.5: Earthquake parameters for the 50 events in the study area......................58Figure 5.1: Epicentral map of studied events with depths..........................................61Figure 5.2: Seismic cross section and distribution of shear zones..............................62Figure 5.3: Stress pattern for all events in the study area...........................................66Figure 5.4: Defined clusters of earthquake epicentres................................................69Figure 5.5: Regional fault map with approximation of the WQ clusters....................71Figure 5.6: Summary of the focal mechanism parameters for the WQ1....................73Figure 5.7: Geologic features of WQ1 and WQ2.......................................................74Figure 5.8: Waveform comparison for 2 events within the Maniwaki cluster ..........75Figure 5.9: Summary of the focal mechanism parameters for the WQ2 cluster.........78Figure 5.10: Summary of the focal mechanism parameters for the WQ3 cluster.......79Figure 5.11: Summary of the focal mechanism parameters for the WQ4 cluster.......81viii
Figure 5.12: Summary of the focal mechanism parameters for the WQ5 cluster.......83Figure 5.13: Geological features of the Adirondack region........................................84Figure 5.14: Summary of the focal mechanism parameters for the WQ6 cluster.......86Figure 5.15: Summary of the focal mechanism parameters for the WQ7 cluster.......87Figure 5.16: Summary of the focal mechanism parameters for the WQ8 cluster.......89Figure 5.17: Summary of the focal mechanism parameters for the WQ9 cluster.......91Figure 5.18: Fault map around Timiskaming cluster .................................................92Figure 5.19: Summary of the focal mechanism parameters for the ON1 cluster........94Figure 5.20: Simplified tectonic map of the southern Ontario....................................95Figure 5.21: Summary of the focal mechanism parameters for the OP1 cluster.........97Figure 5.22: Nodal plane strike for all clusters in the study area................................98ix
Page 1 and 2: FOCAL MECHANISMS AND VARIATIONS IN
Page 3: Acknowledgements:I would like to ex
Page 11 and 12: AbbreviationsCNSN: Canadian Nationa
Page 13 and 14: Earthquakes in western Quebec and s
Page 15 and 16: 1.2 Organization of ThesisChapter 1
Page 17 and 18: eastern Canada each year, of which
Page 19 and 20: Metasedimentary Belt boundary tecto
Page 21 and 22: The Grenville Front tectonic zone (
Page 23 and 24: Figure 2.3: Seismicity in the study
Page 25 and 26: oadly similar continent-continent c
Page 27 and 28: Figure 2.4: Historical earthquakes
Page 29 and 30: earthquakes have occurred within th
Page 31 and 32: cluster, which is considered part o
Page 33 and 34: 2001. All events seemed to occur in
Page 35 and 36: CHAPTER 3DATA SET AND METHODS3.1 In
Page 37 and 38: Fig. 3.1: Locations of seismic stat
Page 39 and 40: Figure 3.2: Number of stations used
Page 41 and 42: the strongest recorded event in the
Page 43 and 44: Figure 3.5: Earthquake source param
Page 45 and 46: The amplitudes of the seismic waves
Page 47 and 48: Figure 3.7: Vertical component wave
Page 49 and 50: HYPOCENTER programThe HYPOCENTER pr
Page 51 and 52: wave - e.g. Pg or Pn, Sg or Sn), th
Page 53 and 54: model for P-wave velocity with mult
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CHAPTER 4RESULTSIn this chapter the
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Figure 4.1: Distribution of RMS of
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Table 4.2: Earthquake parameters (h
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The focal depth calculated here is
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focal mechanism beach-ball diagrams
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some spatial variability of the ori
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22 20001006 50 ±3 134 ±10 90 ±0
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a)b)c)d)Western QuebecSouthern Onta
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esults from other similar studies,
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source region (e.g. Chen and Molnar
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estimate using a stress inversion t
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Figure 5.3: Stress pattern for all
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oundaries of the Central Metasedime
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In Western Quebec Seizmic Zone (WQS
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deeper than 20 km (20 km to 26 km).
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Figure 5.7: Geologic features of WQ
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2009). The Mont-Laurier earthquake
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a) b)c) d)Figure 5.9: Summary of th
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5.4.3 Adirondack Clusters (WQ4 and
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WQ5 is located in the southern part
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Figure 5.13: Geological features of
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consistent with regional fault map
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WQ8 is locatedin the north-western
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5.4.5 Timiskaming Cluster (WQ9)The
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The known faults in WQ9 cluster are
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a) b)c) d)Figure 5.19: Summary of t
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ecorded within this cluster. As it
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Figure 5.22: Nodal plane strike for
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estricted to western Lake Ontario o
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More detailed look at the relations
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Baird, W.A. F., and McKinnon, S. D.
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Easton, R. M. (1986). Geochronology
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Havskov, J., and Ottemöller, L. (2
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Ma, S., and Adams, J. (2002). Estim
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Rimando, R. E., and Benn, K. (2005)
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Wahlstrom, R. (1987) Focal mechanis
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APPENDIX A: Examples of Input and O
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SUNO BZ SN 3 141 15.29SADO BZ SG 4
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EEO BZ SG 4 140 48.02 91 0.09 0 315
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PAL BZ PN 2 D 140 33.20 53 -0.21 1
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APPENDIX C: Faults Plane Solutions
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Appendix D: Focal Mechanisms From P
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19810707 -74.6 45.1 13.0 1.9 304.0
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19950603 -76.4 47.1 18.0 3.9 100.1
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20060225 -75.2 45.7 18.7 4.5 125.8
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western quebec and southern ontario - Department of Geology

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