western quebec and southern ontario - Department of Geology

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

(partially updated SOSN stations). POLARIS is a Canadian geophysical researchconsortium focused on investigation of structure and dynamics of the Earth’s lithosphereand the prediction of earthquake ground motion. The seismic instrumentation of the densePOLARIS Ontario array in Southern Ontario is complimented by a broadly spaced arraycovering the rest of the province, funded by the Federal Economic Development Initiativefor Northern Ontario (FedNor) (Eaton et al., 2005).In this thesis the data from the Canadian National Seismic Network (CNSN) andfrom a few seismic networks in the Unites States are added to the data fromSOSN/POLARIS stations. Figure 3.1 shows the distribution of the POLARIS stations, theFedNor stations, the CNSN stations, and the US seismic stations in the study area.Seismometers broad-band and short-period have been used at all stations. The CNSNstations are equipped with both types with corresponding sample rates of 40 samples persecond (sps) and 100 sps. POLARIS and FedNor have broad-band stations with samplerate of 100 sps. The older SOSN stations have short-period instruments with sample rateof 100 sps. The US stations contain mixed broad-band and short-period stations withsample rates of 50 sps and 100 sps.For the period between 1992 and 2010, 145 different stations recorded 53earthquakes with magnitude (m N ) larger than 3.5 (Appendix C).25
Fig. 3.1: Locations of seismic stations used in this study. Seismic networks: CanadianNational Seismic Network (CNSN), SOSN/POLARIS, FedNor, and US stations(different networks). The rectangular area shows the boundary of the study area.Only the events that were recorded by a minimum of ten stations were studied,reducing the number of the studied events to 50. Five events were recorded by more than90 stations. The majority of the events were recorded by 30 to 40 stations, especially theevents that occurred after 2002 (after the installation of the POLARIS seismic stations)(Figure 3.2). The list of the studied events was compiled from the Canadian NationalEarthquake Database (http://earthquakescanada.nrcan.gc.ca/stndon/NEDB-BNDS/index-26
Page 1 and 2: FOCAL MECHANISMS AND VARIATIONS IN
Page 3: Acknowledgements:I would like to ex
Page 9 and 10: Figure 5.12: Summary of the focal m
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: CHAPTER 3DATA SET AND METHODS3.1 In
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
Page 55 and 56: CHAPTER 4RESULTSIn this chapter the
Page 57 and 58: Figure 4.1: Distribution of RMS of
Page 59 and 60: Table 4.2: Earthquake parameters (h
Page 61 and 62: The focal depth calculated here is
Page 63 and 64: focal mechanism beach-ball diagrams
Page 65 and 66: some spatial variability of the ori
Page 67 and 68: 22 20001006 50 ±3 134 ±10 90 ±0
Page 69 and 70: a)b)c)d)Western QuebecSouthern Onta
Page 71 and 72: esults from other similar studies,
Page 73 and 74: source region (e.g. Chen and Molnar
Page 75 and 76: estimate using a stress inversion t
Page 77 and 78: Figure 5.3: Stress pattern for all
Page 79 and 80: oundaries of the Central Metasedime
Page 81 and 82: In Western Quebec Seizmic Zone (WQS
Page 83 and 84: deeper than 20 km (20 km to 26 km).
Page 85 and 86: 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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