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

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

the main shear zone fabric. The lithology of this domain is identical to the overlying folded TSS, comprising interlayered tan to grey marbles and calc-silicates (Cal ± Qtz ± Fsp ± phyllosilicates ± Py). At upper structural levels within this domain, broad open folds of domain I transition to recumbent and isoclinal (Fig. 2.4d). Fold hinges plunge shallowly to moderately and trend ESE- WNW (Fig. 2.3). Axial planes of these folds are roughly parallel to the main shear zone foliation. Calcite is deformed and shows thin type I twins, and rare type II twins (Fig. 2.4e). This implies deformation temperatures of less than ~200°C (Burkhard 1993; Ferrill et al., 2004). Quartz grains within calc-silicate layers are both undeformed and show patchy undulose extinction, suggesting temperatures of deformation below which quartz dynamically recrystallizes (
Figure 2.5 Representative structures, rock types and deformation mechanisms of domain III, the ultrahigh-strain zone. They are from highest to lowest structural levels: (a) Angular fragments of marble and calcite (outlined in white) within a chaotic carbonate matrix. (b) Well-rounded clasts of quartz, feldspar and phyllosilicate within a matrix of fine-grained calcite. (c) High-strain south-dipping tectonic foliation (S 1 ) within a pelitic schist. (d) High-strain schist composed of feldspar porphyroclasts exhibiting bent twins, patchy undulose extinction, and abundant grain-scale fractures, including antithetic micro-faulting (red arrows), within a matrix dominated by fine-grained dynamically recrystallized quartz. (e) Dextrally sheared mica fish within a matrix of high-strain dynamically recrystallized quartz (viewed to the south). (f) Intensely attenuated and dynamically recrystallized quartz grains exhibiting subgrain extinction and bulging (red arrows). Dotted red line shows length of a single elongate quartz grain. Abbreviations: cal - calcite, fld - feldspar, ms – muscovite, qtz – quartz. 26
Page 1 and 2: FROM CESSATION OF SOUTH-DIRECTED MI
Page 3 and 4: Abstract Field mapping and, structu
Page 5 and 6: Co-Authorship This thesis is my own
Page 7 and 8: Table of Contents Abstract ........
Page 9 and 10: 4.1 Introduction ..................
Page 11 and 12: Figure 4.3 Microscale CPO variabili
Page 13 and 14: Abbreviations Mineral Biotite Calci
Page 15 and 16: Figure 1.1 Color relief map of the
Page 17 and 18: 1.2 Evolution of the Himalayan-Tibe
Page 19 and 20: Figure 1.3 Structures in the Himala
Page 21 and 22: the various models. However, this a
Page 23 and 24: of shear (Murphy and Copeland, 2005
Page 25 and 26: Chapter 4 outlines proposed future
Page 27 and 28: indicated by symmetric high-tempera
Page 29 and 30: The second phase of middle Miocene
Page 31 and 32: 2.3 Geologic Setting 2.3.1 Himalaya
Page 33 and 34: 2.4 Geology of the upper Karnali Va
Page 36 and 37: Figure 2.3 Lithotectonic map and si
Page 40 and 41: South of the interface, the TSS is
Page 42 and 43: WNW Figure 2.6 Representative struc
Page 44 and 45: Figure 2.7 Representative structure
Page 46 and 47: distribution of dextral and sinistr
Page 48 and 49: al., 1986; Mainprice et al., 1986).
Page 50 and 51: Figure 2.9 Summary of CPO post-acqu
Page 52: a c a c Figure 2.10 Summary of quar
Page 56 and 57: Sample HK131A is a high-strain quar
Page 58 and 59: constriction, where rhomb slip domi
Page 60 and 61: ± 50°C (Law et al., 2004). Furthe
Page 62 and 63: Figure 2.14 (a) Photomicrograph of
Page 64 and 65: Figure 2.15 Summary of lithotectoni
Page 66 and 67: elationships, these data constrain
Page 68 and 69: primary reference material, “4409
Page 70 and 71: Figure 2.16 - continued. 57
Page 72: monazite grains are aligned paralle
Page 75 and 76: Analysis Position Pb U Th Th/U 207
Page 79 and 80: Analysis Position HK117A Pb U Th Th
Page 83 and 84: are derived from intensely deformed
Page 85 and 86: Samples KH10, HK102a, HK105, HK115,
Page 87 and 88: the intralaboratory standard (MAC-8
Page 89 and 90:
Figure 2.18 - continued. 76
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espectively. Note that the plateaus
Page 93 and 94:
Figure 2.19 Plots of muscovite cool
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Figure 2.20 Summary of results from
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(2) Previously published chronologi
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Figs. 2.7b,d, 2.15) is locally over
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Thermochronology of muscovite grain
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Figure 2.21 - continued - Box (3) r
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92 Figure 2.22 (a) Location of stud
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is little data to support both afor
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Figure 2.23 Numerical model of modi
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The second phase is associated with
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yr Figure 3.1 Numerical model of Co
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phenomena are consistent with ongoi
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towards the topographic front of th
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Chapter 4 Microstructural analyses:
Page 121 and 122:
a c a c Figure 4.1 Summary of quart
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Figure 4.2 Results of study by Toy
Page 125 and 126:
factors on the formation of differe
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1987; Simpson and De Paor, 1993, 19
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2009). Furthermore, there is rising
Page 131 and 132:
Figure 4.5 Simplified set up of ana
Page 133 and 134:
Appendix A Station locations and st
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Station Latitude Longitude Elevatio
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Station Latitude Longitude KH019 KH
Page 139 and 140:
HK 140 - Non-processed EBSD data 12
Page 141 and 142:
HK 131A - U-Stage data 128
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HK 131A - Non-processed EBSD data 1
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HK 139D - Non-processed EBSD data 1
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HK 105A - U-Stage data 134
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HK 105A - Processed EBSD data (e.g.
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
HK 125 - Processed EBSD data (e.g.
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
HK 124B2 - Processed EBSD data (e.g
Page 163 and 164:
KH18a - Monazite 1 150
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
HK109 - Thin section * For HK109_mo
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U Th 4 3 2 1 5 10 9 11 7 8 6 Nd Y 1
Page 183 and 184:
HK109 - Monazite 3 170
Page 185 and 186:
U SL CP 172
Page 187 and 188:
U Th SL 174
Page 189 and 190:
Page 191 and 192:
U Nd CP 178
Page 193 and 194:
U Nd Th 180
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Page 197 and 198:
Y Nd U Th 184
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U Th SL 186
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CP Nd 2 3 4 6 5 1 Y P 190
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U Th SL 192
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Page 209 and 210:
CP Nd Y P 196
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U Th SL 198
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HK117a - Thin section 200
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11 12 10 8 9 13 14 15 7 6 4 2 5 3 1
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4 1 5 9 10 2 11 6 16 3 7 17 14 8 18
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9 8 7 10 6 5 4 3 2 1 206
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7 6 8 9 13 14 15 4 5 1 2 3 10 11 12
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210
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5 4 9 6 7 8 3 2 1 10 212
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2 3 4 1 6 7 8 9 10 5 214
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Holdsworth, R.E., McCaffrey, K.J.W.
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Cottle, J. M., Jessup, M. J., Newel
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Ghosh, S.K., and Ramberg, H. 1976.
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Hodges, K.V., and Silverberg, D.S.
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Kohn, M.J. 2008. P-T-t data from ce
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Means, W. D., Hobbs, B. E., Lister,
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Prior, D.J. 2009. EBSD in the earth
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Caledonides. In, S. Sengupta (Ed.),
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Yakymchuck, C., 2010. Tectonometamo
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