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

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

Himalaya reveals an orogen-wide middle Miocene transition, coeval with the uplift of eastern Tibet. This is consistent with interpretations invoking radial spreading of Tibet and east-directed lower-crustal flow to explain orogen-parallel extension. Our study leads to the suggestion that a transition affecting mid- to lower-crustal processes may be responsible for the cessation of southdirected extrusion of the GHS and onset of east-directed lower-crustal flow. iv
Co-Authorship This thesis is my own work. The following contributors are co-authors on Chapter 2: My supervisor, L. Godin, who provided scientific direction, thought-provoking discussion, and editorial assistance; J. Cottle who provided direction, expertise, and performed the final stage of U-Th-Pb geochronology; D. Archibald who provided direction, expertise, and guided the 40 Ar/ 39 Ar thermochronology; B. Antolín who provided valuable field assistance, discussion, and editorial comments. v
Page 1 and 2: FROM CESSATION OF SOUTH-DIRECTED MI
Page 3: Abstract Field mapping and, structu
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 38 and 39: the main shear zone fabric. The lit
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
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constriction, where rhomb slip domi
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± 50°C (Law et al., 2004). Furthe
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Figure 2.14 (a) Photomicrograph of
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Figure 2.15 Summary of lithotectoni
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elationships, these data constrain
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primary reference material, “4409
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Figure 2.16 - continued. 57
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monazite grains are aligned paralle
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Analysis Position Pb U Th Th/U 207
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Analysis Position HK117A Pb U Th Th
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are derived from intensely deformed
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Samples KH10, HK102a, HK105, HK115,
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the intralaboratory standard (MAC-8
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Figure 2.18 - continued. 76
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espectively. Note that the plateaus
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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:
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a c a c Figure 4.1 Summary of quart
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Figure 4.2 Results of study by Toy
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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
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Figure 4.5 Simplified set up of ana
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Appendix A Station locations and st
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Station Latitude Longitude Elevatio
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Station Latitude Longitude KH019 KH
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HK 140 - Non-processed EBSD data 12
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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.
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HK 125 - Processed EBSD data (e.g.
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Page 159 and 160:
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HK 124B2 - Processed EBSD data (e.g
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KH18a - Monazite 1 150
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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
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HK109 - Monazite 3 170
Page 185 and 186:
U SL CP 172
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U Th SL 174
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Page 191 and 192:
U Nd CP 178
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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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216
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6 5 12 11 10 9 8 7 1 2 3 4 218
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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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