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XLVI Tab. C6 Zircon fission track ages determined with the program TRACKKEY 4.0 (Dunkl 2002). sample Elev.. Number Spontaneous Induced P� 2 (%) Dosimeter Age (Ma) (m) of grains � s N s �i N i �d N d ± 1� Hard rocks Karakul lake P25-38 4230 24 180.739 1516 56.153 471 7.57 5.52 10895 108±7 P26-38 4100 14 158.762 1081 43.766 298 38.43 5.52 10895 122±9 Central Pamirs A96S1b-49 n.d. 23 241.372 2445 125.474 1271 98.94 5.4 10665 63.5±2.5 P15-38 4365 40 20.84 2111 45.935 4653 2.38 5.52 10895 *15.6±0.5 Rushan Pshart L96M25a-49 n.d. 17 241.108 1456 116.248 702 25.09 5.4 10665 68.5±3.6 96A10b-49 n.d. 33 129.079 2087 77.868 1259 0.0 5.4 10665 *59.4±4.6 Soft rocks Tien Shan TS5a-49 2570 61 221.267 5237 35.026 829 0.0 5.4 10665 *239±13 Altyndara valley AD7d-49 n.d. 43 206.785 4290 37.79 784 0.0 5.4 10665 *204±14 AD8a-49 n.d. 6 245.082 740 52.991 160 64.94 5.4 10665 152±14 Qiangtang A96K1e-49 n.d. 59 333.768 9070 44.416 1207 0.0 5.4 10665 *285±17 Muzkol dome M96M6b-49 n.d. 47 33.435 1726 56.643 2924 11.59 5.4 10665 19.7±0.8 A96M4b-49 n.d. 51 36.668 1375 64.562 2421 44.3 5.4 10665 18.8±0.8 The track densities (�) are measured as x10 5 tr/cm 2 . P� 2 is the probability obtaining a chi-square value for n degrees of freedom (where n = no. of crystals –1). The ages were calculated as central ages, where P� 2 is >5%, and as mean ages (indicated by *), where P� 2 is
XLVII
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Institut für Geowissenschaften (IF
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Key words: Tien Shan, Pamirs, Tibet
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* Nr. 22 MESCHEDE, M. (1994): Tecto
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* Nr. 55 REINECKER, J. (2000): Stre
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The amalgamation of the Pamirs and
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Wer aber je auf Asiens Erdboden sch
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viii (1971). Black lines with arrow
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x sample locations and age distribu
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xii Swedish expeditions followed. I
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2 postulated that the Safed Khers a
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4 Zusammenfassung Die paläozoische
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6 (d) Oberkreide Spaltspurenalter w
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8 deformation propagate from the pl
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10 source terrains, changes in the
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12 Geochemisches Zentrallabor, Univ
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14 mean UO+/U+ and Pb+/U+ value. Si
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16 apatites and zircons were counte
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18 number of simulation runs and th
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Two Palaeozoic sutures divide the C
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igneous and sedimentary rock sequen
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Triassic and the formation of an is
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27 Lake Karakul The Lake Karakul ar
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3.3.2 Major and trace elements Majo
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32 of 26-40 for samples P2, P5, and
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34 some of the zircons suffered Pb
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36 fractions are situated close to
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3.4.2 Rb/Sr dating The Rb/Sr minera
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45 The Cretaceous plutons show mode
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48 Thompson et al. (1984), who see
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50 granites and have Sm-Nd model ag
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52 associations in Afghanistan is f
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54 Kara Kunlun or Mazar accretionar
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56 Early Jurassic low-angle normal
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58 Coward et al. (1988) pointed out
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60 oceanic crust for the consumptio
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62 Palaeogene volcanic rocks of cen
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64 3.7 Conclusions Based on new own
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4 Cenozoic exhumation history of th
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Southern Tien Shan One Permian gran
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Thermal modelling The results of th
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amphibole, white mica, and biotite
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the zircon PAZ. The apparent apatit
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elt likely operated as an out-of-se
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ages from gneissic rocks within the
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84 south to 18 Ma in the north; the
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86 Cretaceous plutons that intrude
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88 6 References Allègre C.J., Cout
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90 House, scale 1:2 000 000. Chen F
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92 Karakorum (Sinkiang, China); the
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94 Hurford A.J. and Hammerschmidt K
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96 without double spiking. Geochimi
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98 Geological Society of America, 2
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100 Zamoruyev A., 1995a. Neotectoni
Page 126 and 127: 102 Ann. Rev. of Earth and Planetar
Page 128: 104 this work, especially all membe
Page 132 and 133: II Appendix A Tab. A1 Sample descri
Page 134 and 135: IV Tab. A2 continued Pamir frontal
Page 136 and 137: VI Tab. A2 continued Tertiary exten
Page 138 and 139: VIII Tab. A3 continued Sample Miner
Page 140 and 141: X Tab. A6 Rb/Sr and Sm/Nd isotopic
Page 142 and 143: XII Tab. A7 continued Apparent ages
Page 144 and 145: XIV Tab. A9 U/Pb isotopic ratios fr
Page 146 and 147: XVI Tab. A9 continued 207 Pb/ 206 P
Page 148 and 149: XVIII Tab. A9 continued 207 Pb/ 206
Page 150 and 151: XX Appendix B Plate B1 Cathodolumin
Page 152 and 153: XXII Plate B3 Cathodoluminescence i
Page 154 and 155: XXIV Plate B5 Cathodoluminescence i
Page 156 and 157: XXVI Tab. C2 Determination of the
Page 158 and 159: XXVIII
Page 160 and 161: XXX
Page 162 and 163: XXXII
Page 164 and 165: XXXIV
Page 166 and 167: XXXVI Tab. C5 continued Sample grai
Page 168 and 169: XXXVIII Tab. C5 continued Sample gr
Page 170 and 171: XL Tab. C5 continued Sample grain-n
Page 172 and 173: XLII Tab. C5 continued Sample grain
Page 174 and 175: XLIV
Page 178 and 179: XLVIII
Page 182 and 183: LII
Page 184: LIV Tab. C7 Apatite and zircon fiss
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