title of the thesis - Department of Geology - Queen's University

Figure 3.23: Preliminary stress inversion for Cluster 1 focal mechanisms..................................73
Figure 3.24: Secondary stress inversion for Cluster 1 focal mechanisms....................................73
Figure 3.25: Equal area stereonet showing proximity of principal stress orientations
calculated from fault plane solutions to stress orientations derived from
measured and calculated stresses .............................................................................75
Figure 3.26: Equal area stereonet showing stress measurements. ...............................................75
Figure 3.27: Principal stress orientations derived from stress inversion superimposed on
contoured axis measurements...................................................................................77
Figure 4.1: Schematic diagram of elements and nodes. ..............................................................79
Figure 4.2: The stress-strain model for an elastic, perfectly plastic material...............................81
Figure 4.3: Complete model geometry.. ......................................................................................82
Figure 4.4: Mohr circle and Mohr-Coulomb failure envelope defined by cohesion and
angle of internal friction...........................................................................................83
Figure 4.5: Model for tectonic loading. .......................................................................................85
Figure 4.6: Model of maximum stress for Case 1........................................................................88
Figure 4.7: Model of differential stress for Case 1 ......................................................................88
Figure 4.8: Model of fault slip for Case 1....................................................................................88
Figure 4.9: Model of yielding for Case 1.....................................................................................89
Figure 4.10: Model of maximum stress for Case 2......................................................................90
Figure 4.11: Model of differential stress for Case 2. ...................................................................91
Figure 4.12: Model of fault slip for Case 2..................................................................................91
Figure 4.13: Model of yielding for Case 2...................................................................................91
Figure 4.14: Model of maximum stress for Case 3......................................................................93
Figure 4.15: Model of differential stress for Case 3. ...................................................................93
Figure 4.16: Model of fault slip for Case 3..................................................................................93
Figure 4.17: Model of yielding for Case 3...................................................................................94
Figure 4.18: Maximum stress for tectonic model. .......................................................................95
Figure 4.19: Differential stress for tectonic model .....................................................................95
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