References Arthaud, F., and M. Mattauer: Presentation d'un nouveau mode de description tectonique: la notion de sous-facies tectonique. C. R. Acad. Sci. Paris 268, 1019- 1022 (1969). Balk, R.: Structure of Grand Saline salt dome, Van Zandt County, Texas. Bull. Am. Assoc. Petrol. Geologists, 33, 1791-1829 (1949). - Salt structure of Jefferson Island salt dome, Iberia and Vermilion parishes, Louisiana. Bull. Am. Assoc. Petrol. Geologists, 37, 2455-2474 (1953). Barth, T. F. W.: Progressive metamorphism of sparagmite ro

Gilmour, P., and M. F. Carman: Petrofabric analyses of Lom Tay limestone from Stramur, Argyll. Geol. Mag., 91, 49-60 (1954). Goguel, J.: Introduction a l'thude memanique des deformations de l'ecorce ter• restre, 2nd ed. 530 pp., Paris: Imprimerie Nationale (1948). Haller, J.: Der "Zentrale Metamorphe Komplex" von NE-Gronland, Pt. 1, Die geologische Karte von Suess Land, Gletscherland und Goodenoughs Land. Medd. Gr0nland, 73, No.3, 174 pp. (1955a). - Die syn- und postorogenen Granite der ostgronlandismen Kaledoniden. Schweiz. Mineral. Petrog. Mitt., 35, 280-286 (1955b). Hansen, E.: Methods of deducing slip-line orientations from the geometry of folds. Carnegie Inst. Wash. Year Book 65, 387-405 (1967a). - Converging slip lines in Trollheimen, . Carnegie Inst. Wash. Year Book 65, 405-406 (1967b). - , and I. Y. Borg: The dynamic significance of deformation lamellae in quartz of a calcite-cemented sandstone. Am. J. Sci., 260, 321-336 (1962). - , S. C. Porter, B. A. Hall, and A. Hills: Decollement structures in glacial-lake sediments. Bull. Geol. Soc. Am., 72, 1415-1418 (1961). - , and W. H. Scott: Real versus apparent displacement in slip folds. Carnegie Inst. Wash. Year Book 66, 538-539 (1968). - , and W. H. Scott: On the "drag folds" of Van Hise and Leith (1911). Carnegie Inst. Wash. Year Book 67, 258-263 (1969). - , W. H. Scott, and R. S. Stanley: Reconnaissance of slip-line orientations in parts of three mountain mains. Carnegie Inst. Wash. Year Book 65, 406-410 (1967). Harland, W. B.: Tectonic facies, orientation, sequence, style and date. Geol. Mag., 93, 111-120 (1956). Holtedahl, H.: Geological and petrological investigations in the north-western part of the Opdal quadrangle. Arbok Univ. Bergen, Naturv. Reeke, 1949, No. 7, 60 pp. (1950). Holtedahl, 0.: Geological observations in the Opdal--Trollheimen district. Norsk Geol. Tidsskr., 18, 29-53 (1938). Howard, K. A.: Flow direction in triclinic folded rocks. Am. J. Sci., 226, 758-765 (1969). Knopf, E. B., and E. Ingerson: Structural petrology. Geol. Soc. Am. Mem. 6, 270 pp. (1938). Mackin, J. H.: Some structural features of the intrusions in the Iron Springs district. Utah Geol. Surv. Guidebook to the Geology of Utah, No.2, 62 pp. (1947). Martin, H.: The hypothesis of continental drift in the light of recent advances of geological knowledge in Brazil and in south west Africa. Trans. Proc. Geol. Soc. S. Africa, Annexure to 64, 47 pp. (1961). Matthews, D. H.: Dimensions of asymmetrical folds. Geol. Mag., 95, 511-513 (1958). McIntyre, D. B.: Note on two lineated tectonites from Strathavon, Banffshire. Geol. Mag., 87, 331-336 (1950). - , and F. J. Turner: Petrofabric analysis of marbles from mid-Strathspey and Strathavon. Geol. Mag., 90, 225-240 (1953). Muehlberger, W. R.: Internal structure of the Grand Saline salt dome, Van Zandt County, Texas. Bur. Econ. Geol., Univ. Texas, Rept. Invest., No. 38, 23 pp. (1959). References 187

Muret, G.: Partie S. E. de la culmination du Romsdal, chaine caledonienne, Nor• vege. Intern. Geol. Congr., 21st, Copenhagen, 1960, Rept. Session Norden, Pt. 19, 28-32 (1960). Nettleton, L. L.: Fluid mechanics of salt domes. Bull. Am. Assoc. Petrol. Geolo• gists, 18, 1175-1204 (1934). O'Driscoll, E. S.: Experimental patterns of superposed similar foldirg, J. Alberta Soc. Petrol. Geologists, 10, 145-167 (1962). - Interference patterns from inclined shear fold systems. Bull. Can. Petrol. Geol., 12, 279-310 (1964). Page, B. M.: Gravity tectonics near Passo della Cisa, northern Apennines, Italy. Bull. Geol. Soc. Am., 74, 655-671 (1963). Parker, T. j., and A. N. McDowell: Model studies of salt-dome tectonics. Bull. Am. Assoc. Petrol. Geologists, 39, 2384-2470 (1955). Ramsay, j. G.: The deformation of early linear structures in areas of repeated folding. J. Geol., 68, 75-93 (1960). - The geometry and mechanics of formation of "similar" type folds. J. Geol., 70, 309-327 (1962a). - Interference patterns produced by the superposition of folds of similar type. J. Geol., 70, 466-481 (1962b). - Folding and fracturing of rocks. 568 pp. New York: McGraw-Hill Book Co. (1967). Reynolds, D. L., and A. Holmes: The superposition of Caledonoid folds on an older fold-system in the Dalradians of Malin Head, Co. Donegal. Geol. Mag., 91, 417-444 (1954). Rosenqvist, I. T.: The Lonset anticline in the Opdal area. Norsk Geol. Tidsskr., 21, 25-48 (1941). Rouse, H.: Elementary mechanics of fluids. 376 pp. New York: John Wiley & Sons (1946). Sander, B.: Zur Petrographisch-Tektonischen Analyse III. Jahrb. Geol. Bundesan• stalt (Austria), 76, 323-406 (1926). Scott, W. H.: Experiments in flow deformation. Carnegie Inst. Wash. Year Book 67, 251-254 (1969). - , and E. Hansen: Movement directions and the axial-plane fabrics of flexural folds. Carnegie Inst. Wash. Year Book 67, 254-258 (1969). - , E. Hansen, and R. j. Twiss: Stress analysis of quartz deformation lamellae in a minor fold. Am. ]. Sci., 263, 729-746 (1965). Skehan, j. W.: The Green Mountain anticlinorium in the vicinity of Wilmington and Woodford, Vermont. Vermont Geol. Surv. BulL, No. 17, 159 pp. (1961). Stanley, R. S.: The bedrock geology of the Collinsville quadrangle. Conn. State Geol. Nat. Hist. Surv. Quad. Rept., No. 16, 99 pp. (1964). - Bedrock geology of the southern portion of the Hinesburg synclinorium. In Barnett, S. G., editor, Guidebook to field excursions at the 40th annual meeting of the New York State Geological Association, May 1969, 37-63 (1969). Strand, T.: The pre-Devonian rocks and structures in the region of Caledonian deformation. Norg. Geol. Undersakelse, No. 208,170-284 (1960). - The Scandinavian Caledonides - A review. Am. J. Sci., 259, 161-172 (1961). - , and P. Holmsen: Stratigraphy, petrology and Caledonian nappe tectonics of central southern Norway; Caledonized basal gneisses in a northwestern area. Norg. Geol. UndersokeIse, No. 212 I, 31 pp. (1960). Trusheim, F.: Uber Halokinese und ihre Bedeutung fur die Strukturelle Entwick• lung Norddeutschlands. Z. Deut. Geol. Ges., 109, 111-158 (1957). 188 References

Turner, E. J., and L. E. Weiss: Structural analysis of metamorphic tectonites. 545 pp. New York: McGraw-Hill Book Co. (1963). Tuttle, O. E., and N. L. Bowen: Origin of granite il'J the light of experimental studies in the system NaAISiaOs-KAISisOs-Si02-H20. Geol. Soc. Am. Mem. 74, 153 pp. (1958). Van Hise, C. R., and C. K. Leith: The geology of the Lake Superior region. U. S. Geol. Surv. Monograph 52, 641 pp. (1911). Watson, G. S., and E. Irving: Statistical methods in rolk magnetism. Monthly Notices Roy. Astron. Soc., Geophys. Suppl., 7, 289-300 (1957). Wegmann, E.: Beispiele Tektonischer Analysen des Grundgebirges in Finnland. Bull. Comm. Geol. Finland, 87, 98-127 (1929) Weiss, L. E.: Fabric analysis of a triclinic tectonite and its bearing on the geom• etry of flow in rocks. Am. J. Sci., 253, 225-236 (1955). - Geometry of superposed folding. Bull. Geol. Soc. Am., 70, 91-106 (1959a). - Structural analysis of the Basement system at Turoka, Kenya. Overseas Geol. Mineral Resources (Gt Brit.), 7, 3-35, 123-153 (1959b). - , and D. B. McIntyre: Structural geometry of Dalradian rocks at Loch Leven, Scottish Highlands. J. Geol., 65, 575-602 (1957). White, W. S., and R. H. Jahns: Structure of central and east-central Vermont. J. Geol., 58, 179-220 (1950). Author and Subject Index

"a" folds 25 Area 7 124, 127, 130 ff. Abbreviations for flow types 56 - 8 124, 127, 132 f. Acceleration flow 54 Arithmetic mean 19 Acknowledgments 7 Arthaud, F. 180 Ages of rock units in Trollheimen 61 f. Aspect of folds, see style of folds Albite 151 Asymmetrical folds 9, 21, ff., 37, 40, Almandine 5 f., 151, PI. 1 [in pocket] 45 ff., 48, 51, 77, 85, 89, 127, 144 Almandine-amphibolite facies 5, 151; - -, clockwise 21 ff., 37, 45, 48, 51, pI. 1 [in pocket] 77, 85, 89, 127, 144 Alpine-type mountain chains 181 - -, counterclockwise 21 H., 37, Amphibole 66, 134, 138 f. 45 f., 48, 51, 85, 127 Amphibolite 6, 59, 62 f., 66, 68 ff., Asymmetry of folds 3, 10, 21 ff., 75 H., 100, 102 H., 114 f., 118 ff., 33 ff., 70, 72, 74 f., 77, 82, 85, 89, 122 f., 134, 148 ff., 157 f., 161 ff.; 101, 115, 117, 126 H., 144, 152 f., pIs. 1, 7 [in pocket] 157 f., 162, 164 f., 169 f., 172, 178 Amphibolitic schists 118 f., 134, 138 - -, clockwise 21 ff., 37, 77, 129, Amphibolite-schist sequence 62 f., 100, 131, 144; pI. 1 [in pocket] 102 ff., 114, 150 - -, counterclockwise 21 H, 37, 46, Amplitudes of folds 9 f., 12 77, 129, 131; pI. 1 [in pocket] - of transverse waves 9 - -, dextral 22 Anorthosite 6 - -, geometry governing 22 f., 33 ff. Anorthosite-gabbro complex 5 - -, - -, in flexural-slip folds Anticline hypothesis for form of Riar 33 ff. basin 100 ff., 106 f. - -, - -, in slip folds in planar Apatite 61 layers 42 ff. Area A 76 f., 82 ff., 89, 92 ff., 98 f., - -, - -, in superposed slip folds 107, 109, 140 of multiple orders 47 ff. - B 88 f., 92 ff., 98 f., 107, 109, 140 - -, - -, in superposed slip folds - C 89 H., 98 f., 107, 109, 140 of a single order 44 ff. - D 134, 137 ff., 142 ff. - -, mixed 25, 70, 75, 129 - E 134, 137 H., 142 ff. - -, normal 24 f., 48, 70, 74, 77, - F 134 ff., 142 H. 85, 101, 115, 117, 128 f., 131, 158, - G 134, 137 H., 142 ff. 178 - H 134, 137 ff., 142 H. - -, reverse 24 f., 48, 77, 85, 89, - I 134, 137 H., 142 ff. 101, 115, 117 - J 134, 137 H., 141 ff. - -, rotation eHects in slip 47 f., - K 134 H., 141 H. - -, sinistral 22 - L 134,137, 139, 141 ff. Average 19 - 1 124, 127, 130 ff. Augen, elongate 59, 68, 107, 109, 146, - 2 124, 127, 130 ff. 154,173 f., 177, 182; pI. 1 [in pocked - 3 124 130 ff. -, -, mineral-lineation relationships - 4 124, 127, 130 ff. of 68, 107, 109, 154, 182; pI. 1 - 5 124, 127, 130 ff. [in pocked - 6 124, 127, 130 ff. -, -, in Riar basin 68, 107 190 Author and Subject Index

Augen, elongate, of sahlfold facies 68, Boudinage 68 f., 107 ff., 146, 149 f., 107, 109, 177, 182 154, 173f., 177, 182; pI. 1 [in pocket] --, --, sahlfold relationships of 107, --, in eastern homocline 149 f., 154, 109, 182; pI. 1 [in pocket] 173; pI. 1 [in pocket] --, --, in strain facies 107, 109, 146, --, mineral-lineation relationships of 173 f., 177, 182 68 f., 107 ff., 149 f., 154, 182; pI. 1 --, --, in Svah0 border zone 154, 173 [in pocket] -- gneiss 59, 64, 68, 74, 150, 154; --, in Riar basin 68 f., 107, 110 f.; pI. 1 [in pocket] pI. 1 [in pocket] --, --, in Trollheimen 59, 68, 107, --, of sahlfold facies 68 f., 107 ff., 154, 173 f.; pI. 1 [in pocket] 177, 182 Axes, flow 52 ff., 107 ff., 145 ff., 168, --, sahlfoid relationships of 107 ff., 172 f., 179, 182 182; pI. 1 [in pocket] --, boudin, see boudinage --, in strain facies 107 ff., 146, 173 f., --, cone 16 f., 27, 66, 98 f. 177, 182 --, fabric 15, 52, 109 f., 125 f., 168, --, in Svah0 border zone 154, 173; 172 f., 178, 182 pI. 1 [in pocket] --, fold, see fold axes --, in Trollheimen 68 f., 107, 110 f., --, kinematic, see flow, axes of 149 f., 154, 173 f.; pI. 1 [in pocket] --, strain 38 ff., 112 Bowen, N. L. 6 --, stress 38 ff., 164 Burchfiel, B. C. 7 --, zone, see zone axes Axial planes of folds, see folds, axial Calcareous schist 6, 151 surfaces of Calcite 3; pI. 1 [in pocket] -- surfaces of folds, see folds, axial -- twin lamellae 3 surfaces of Calc-silicate 151 pI. 1 [in pocket] -- symmetry 55 Caledonides 5, 106, 172 -- traces of folds 9 ff., 19, 29, 77; Cambrian 63 pIs. 1, 7, 8 [in pocket] Carey, S. W. 7 f., 28 Carmalt, S. W. 7 Balk, R. 100 f., 179 Carman, M. F. 42 Barth, T. F. W. 61 Carnegie Institution of Washington 7 Basal gneiss 104 Carstens, H. 63 Basement gneiss 106 Carter, N. L. 42 -- -- cores 104 Ca taclastic rock 151 -- rocks 5, 63, 104 Character of hinge lines see hinge lines Basins see interference structures, of folds, character basins, and Riar basin Characteristics of folds, see folds, Binary mica schist, see mica schist properties of Biotite 59, 61, 66, 68, 151; pI. 1 Chevron folds 25, 114 [in pocket] Chlorite 61; pI. 1 [in pocket] Billings, M. P. 9, 17, 24 Clark, R. H. 8, 42 BjfJrlykke, H. 7 Classification of folds see folds, Block diagram of eastern homo cline classification 171 Cleavage arches 125 BI5.h0 33 f, 59, 61, 65 f., 68 f., 71 f., -- banding 117 79 ff., 104, 117 ff., 121 ff., 132; Cleavages 17, 69, 115, 126 f., 129, 145, pIs. 1, 7, 8 [in pocket] 157 f., 174, 176 ff., 182; pI. 1 [in -- group 59, 61 ff., 76 f., 104, 106, pocket] 170; pI. 1 [in pocket] --, fold relationships of 17, 68, 70, BloP, F. D. 127 115, 157 f., 176 f., 182 Borg, I. Y. 42 --, fracture 17 Author and Subject Index 191

Cleavages, mineral 17, 69 Dahlstrom, C. D. A. 17 -, rock 17 Davies, O. L. 19 -, slaty 17 Deceleration flow 54 -, slip 17, 115, 121, 145, 176 f., 182 Deformation ellipsoids 53, 111 f. Clockwise asymmetry 21 ff., 37, 77, - lamellae in quartz 3 129, 131, 144; pI. 1 [in pocked de Neufville, J. 7 Closure of folds 24 Densities of rock units in Trollheimen Closures 32, 86, 101, 103 61 f., 103, 106 Compound flow 53 ff., 58, 173, 178, Depths of folds 13 H., 19 f., 115 182 Depth-width ratios of folds 2, 13 f., Concentric folds 157 18 ff., 25, 35, 70, 72, 101, 115, 158, Cone axes 16 f., 27, 66, 98 f. 161, 175 f., 178 - axis of Riar basin 66 -- -, means of 20,70,72,82,101, - of converging folds in Riar basin 115, 158, 161, 175, 178 64,66,100 Dextral asymmetry of folds 22 Conical, see cylindricity of folds, conical Diapirism 103 f. - folds 15 ff., 70, 77 f., 87, 110 Diapirs 78 Constriction-slip folding 111 f. Differential flow 24 Convergent flow 53 ff., 107 ff., 146 f., "Digits" of the flagstone "handfold" 66 175, 178 H. Dimensional parameters of folds 15 Core zones 5, 63, 106, 181 Dimensions of folds 12, 42, 114 - -, Caledonides 5, 63 Dimroth, E. 96 Counterclockwise asymmetry 21 ff., Dimroth ellipsoids 96 37,46, 77, 129, 131; pI. 1 [in pocket] Discfold facies 148 H., 174, 177 f., Coupled folds 10 ff., 18, 73, 101 181 ff. Crenulate folds 114 - -, definition of 172 Cross sections 33, 65, 101, 105, 111 - -, distribution in Trollheimen - -, of sahlfold stream lines in Riar 181, 183 basin 111 - -, fabric relationships in 172, 182 - -, of Trollheimen 65, 101, 105 - -, flow environment of 172 f., - -, of tundra landslide 33 177 f., 182 "Culmination" in Riar basin 66 f., 125 - -, - -, comparison to flow Curved hinge lines see hinge lines of environments of other facies 177 ff. folds, curved - -, - -, compound flow in 173, - hinges see hinges of folds, curved 178, 182 - limbs of folds, see limbs of folds, - -, - -, convergent flow in 173, curved 178, 182 Cylindrical see cylindricity of folds, - -, - -, divergent flow in 173, cylindrical 178, 182 - folds 15 f., 70, 109 f., 175 - -, - -, fabric relationships to Cylindricity of folds 2, 15 f., 25, 35, 172 f., 182 68, 70, 101, 114 f., 146, 152, 155, - -, - -, principal stream surfaces 157 f., 175 H., 182 in 172 - -, conical 15 f. - -, - -, stream lines in 172 f. - -, - -, tundra-landslide flow - -, cylindrical 15 f., 25 environment compared to 178 - -, cylindroidal 15 f., 25 - -, - -, velocity gradient flow in - -, irregular 15 f., 26 172 f., 178, 182 Cylindroidal, see cylindricity of folds, - -, index-fold characteristics cylindroidal 157 H., 182 - folds 15 f., 35, 64, 70, 77, 109 f., - -, intensity of development in 115, 158, 178 Trollheimen 181, 183 192 Author and Subject Index

Discfold facies, mineral lineation in Eastern homocline, boudinage in 149 f., 172, 176, 178, 182 154, 173; pI. 1 [in pocket] - -, norfold facies compared to 174, - -, faults in 150 ff., 165, 169 ff. 176 ff. - -, mineral lineations in 148 H. - -, sahlfold facies compared to Earth's crust 181 174 ff. Eclogite 6 - -, strain features in 172, 182 Elliott, D. 1 - -, summary of 182 Ellipsoids 53, 96, 111 f. - -, tundra-landslide folds classified -, deformation 53, 111 f. in 178 -, Dimroth 96 Discfolds 26, 114, 150, 157 ff., 167 ff., -, strain 53, 111 f. 182, pI. 1 [in pocket] Elongation of folds 13, 20 -, cleavage relationships of 157 f., Envelopes of folds 10, 12 171 f., 176, 182 Eocambrian 63 -, description of 157 ff. Epidote 61, 120; pI. 1 [in pocket] -, flattening of 157, 162 H., 171, 173, Eugeosynclinal sediments 63 175 -, lineation rotation paths in 162 H. Fabric 37 f., 109 f., 125 f., 133 f., 144, -, macroscopic 165 167 ff. -, mechanism of development of - axes 15, 52, 109 f., 125 f., 168, 157, 162 ff. 172 f., 178, 182 -, mineral-lineation relationships of Facies 1,3, 181 157 f., 171, 176, 182 - concept 1 ff., 178, 180 -, name of 25 f. Falkfangerh0 65, 123, 132, 148; -, norfolds compared to 176 pI. 1 [in pocket] -, origin of, norfolds from 176 Fanfolds 75 -, origin of, sahlfolds from 175 f. Faults 104, 150 ff., 165, 169 ff.; -, photographs of 159 f. pI. 1, 8 [in pocket] -, proto- 175 -, in eastern homocline 150 ff., 165, -, sahlfolds compared to 174 H. 169 ff. -, slip lines of, 164 f., 167 f., 169 -, in Riar basin 104; pI. 8 -, - - , solutions for orientations of [in pocket] 152 f., 162, 164 f., 167 ff. -, in Svah0 border zone 150 ff., 165, -, tundra-landslide folds compared to 169 ff. 178 Feldspars pI. 1 [ in pocket] see also Disharmonic folds 13, 25, 35, 157, 182 albite, micro cline, oligoclase, Displacement ratio for slip folds 97 f. plagioclase Divergent flow 53 ff., 107, 109 Feldspathic epidote amphibolite 120 Dobrin, M. B. 103 - mica schist 117, 119 Dome folds 25 - quartzite see quartz schist Domes see interference structures, domes, and mantled gneiss domes - sandstone 63 Donath, F. A. 7 f. Finger, L. 7 Drag 39 ff. "Fingers" of the flagstone "handfold" - folds 25 66 f., 72, 125, 128 f. Dunbar, C. O. 180 Fisher, C. W. 7 Dynamics 38 Flagstone 60 f., 64 H., 68 ff., 75 H., 85 f., 88 f., 100 ff., 112, 114 H., East Greenland 172 120 f., 123, 125, 128 f., 134, 148, Eastern homocline 64 f., 114, 148 H., 1?0, 154, 157 H., 178 f.; pIs. 1,.1' 8 168, 170 [10 pocket] see also, quartz sdust - -, block diagram of 171 -, chemical analysis of 61 Author and Subject Index 193

Flagstone, description of 59 ff., pI. 1 Flexures, macroscopic, in the Svah0 [in pocket] border zone 152 f., 165, 167 ff. - "handfold" 66 f., 71 f., 76, Flinn, D. 53, 111 f. 100, 102 ff., 107, 128 f., 134, 136, 179 Flow 2, 8, 24, 52 H., 107 H., 145 H., - -, anticline hypothesis for form of 170 ff., 175, 177 H. 100 ff., 106 f. -, acceleration 54 - -, "digits" of the 66 -, axes of 52 H., 107 ff., 145 H., 168, - -, "fingers" of the 66 f., 72, 125, 172 f., 179, 182 128 f. -, compound 53 ff., 58, 173, 178, 182 - -, interpreted as refolded nappe -, convergent 53 H., 107 ff., 146 f., 104 ff. 175, 178 H. - -, "palm" of 66, 125 -, deceleration 54 - -, reconstruction of, as anticline -, diHerential 24 102 -, direction of 53 H., 57 f., 108, 145, - -, salt-dome analog to 100 ff. 170, 179, 181 - -, - -, comparison of mesoscopic -, divergent 53 ff., 107, 109 folds in 100 f., 103 - folding 8 - -, - -, relative viscosities in - folds 76 103 f. -, irrotational 54 H. - -, - -, rim anticline of 103 -, parallel 53 ff., 110, 147 - -, - -, - syncline of 100, 107 -, rotational 53 f., 56 H., 110 f., - -, syncline hypothesis for form of 146 f., 178 ff., 182 104 ff. -, steady 54 - -, "thumb" of 66, 69, 71 f., 76 f., -, types of 52 H., 107 ff., 145 ff., 79 ff., 85 f., 88 f., 100, 104, 112, 129; 172 f., 177 ff. pIs. 7, 8 [in pocket] -, -, abbreviations for 56 - -, -, plane-table maps; pIs. 7, 8 -, -, correlation with strain features [in pod{et] 56 H., 107 H., 145 H., 172 f., 178 f. - -, "wrist" of the 66,72, 114 -, -, displacement of particles in -, modal analyses of 61 56 f. -, photographs of 60 -, uniform 54 Flattening of folds 112 f., 137 ff., 157, -, unsteady 54 162 ff., 171, 173, 175 -, velocity of 54 Flexing 8, 27, 35, 38, 83 -, velocity gradient 53 f., 56 Flexural folds, see flexures H., Flexural-slip folding 8, 23 f., 27, 42, 107 ff., 113, 145, 147, 172 f., 178 ff. 82 f., 112, 136 f., 140, 162, 172 f. 182 - folds 23, 25, 27, 33 ff., 51, 56 ff., Fold asymmetry see asymmetry of folds 112, 137, 164 f., 173, 178 - axes 3, 8, 15 ff., 20 f., 27 ff., 33, - -, geometry of 27, 33 ff., 51, 82, 35 ff., 42 ff., 48 ff., 58, 64, 66, 68, 112 70 ff., 76, 82, 84 ff., 94 H., 100 H., - -, rotation in, of asymmetry 39 ff. 107 ff., 111 H., 115, 122 ff., 128 H., - -, - of limbs 23 f. 134, 136 ff., 141 ff., 144 ff., 152 f., - -, -, of lineations 27, 112 f. 155, 157 f., 162, 164 ff., 171 ff., - -, -, of planes 39 ff. 175 f., 178 ff., 181 f.; pIs. 1 , 7, 8 - -, slip in 8,23,27, 57, 164, 172 [in pocket] - -, stream lines in 57"£., 172 f. - -, conical distributions of 64, 66 - -, - surfaces, principal, in 56 f., - -, girdle distributions of, 172 see planar distributions of - -, superposed 32, 82 f. - -, linear distributions of 3, 24, 44, Flexures 3, 33 H., 42, 58, 152 f., 165, 70, 76, 85, 89, 115, 155, 157 f., 168, 167 ff., 178 173, 175 f., 179, 182 13 Hansen, Strain Facies 194 Author and Subject Index

Fold axes, planar distributions of 33, Folds, depth-width ratios of 2, 13 f., 36 H., 40, 44, 51, 152, 157 f., 162, 18 H., 25, 35, 70, 72, 101, 115, 158, 164, 175 f., 178, 182 161, 175 f., 178 - -, point-maximum distributions -, descriptions of 2, 8 H., 34 f., 68 H., of, see linear distributions of 101, 103, 114 H., 151 H., 174 - -, preferred orientations of 21, -, descriptive properties of, see folds, 24, 36 ff., 40, 44, 70, 76, 85, 89, 115, properties of 152, 155, 157 f., 164, 168, 173, 175 f., -, dimensional parameters of 15 178 f., 182 -, dimensions of 12,42, 114 - patterns see fold asymmetry -, disharmonic 13, 25, 35, 157, 182 Folds, "an 25 -, dome 25 -, amplitudes of 9 f., 12 -, drag 25 -, asymmetrical 9, 21 H., 37, 40, 45 f., -, elongation of 13, 20 48, 51, 77, 85, 89, 127, 144 -, envelopes of 10, 12 -, -, clo!X.wise 21 f., 37, 45, 48, 51, -, fan 75 77, 85, 89, 127, 144 -, flattening of 112 f., 137 H., 157, -, -, counterclo!x'wise 21 H., 37, 162 H., 171, 173, 175 45 f., 48, 51, 85, 127 -, flexural see flexures -, asymmetry of, see asymmetry of -, flexural-slip see flexural-slip folds folds -, flow 76 -, axes of, see fold axes -, forms of 2 f., 12 f., 15 H., 82, 101, -, axial surfaces of 2, 8 f., 13 H., 17, 179; pI. 1 [in po!X.et] 22 H., 28 H., 32, 39 f., 43, 46, 51, -, generations of 2, 17, 51, 165, 170 56 f., 68 H., 77, 82 f., 85, 87, 89 H., -, geneses of 25 107, 109 H., 115, 117 f., 121 H., 131, -, geometry of, flexural-slip 27, 134 H., 139, 142, 144 f., 152, 155, 33 H., 51, 82, 112 157 f., 164 f., 167, 172, 175 H. 179, -, -, slip 27 H., 42 ff., 82, 86, 112 182; pI. 1 [in po!X.et] -, harmonic 13, 25, 68, 101, 114, 154, -, - -, traces of 9 ff., 19, 29, 77; 182 -, harmony of 13 pis. 1, 7, 8 [in po!X.et] -, heights, short-limb, of 9, 11 H., -, - -, zone axes of 39 f., 123, 137, 17 H., 97 f., 175 142 -, height-spacing ratios of 12 -, characteristics of see folds, -, height-width ratios of 2, 9, 11 ff., properties of 17 H., 25, 35, 70 f., 82, 101, 103, -,chevron 25,114 115, 121, 158, 161, 175 ff. -, classifications of 2 f. -, high-order 23 f., 47 ff., 114, 154 -, cleavage relationships of 17, 68, 70, -, hinge lines of, see hinge lines of 115, 157 f., 176 f., 182 folds -, closure of 24 -, hinges of, see hinges of folds -, concentric 157 -, inflection points of 10, 12 -, conical 15 H., 70, 77 f., 87, 110 -, interfering see interference structures -, coupled 10 ff., 18, 73, 101 -, irregular 15 f., 35, 115, 158, 160, 175, 178 -, crenulate 114 -, isoclinal 12, 25, 30, 68, 82, 101, -, crests of 10, 46, 64, 123, 143 154, 157, 164, 166, 182 -, cylindrical 15 f., 70, 109 f., 175 -, kink 114 -, cylindricity of, see cylindricity of -, lengths of 15 folds -, limbs of, see limbs of folds -, cylindroidal 15 f., 35, 64, 70, 77, -, long limbs of 11 H., 21 f. 109 f., 115, 158, 178 -,low-order 23 H., 47 ff., 51, 86 f., -, depths of 13 ff., 19 f., 115 89 Author and Subject Index 195

Folds, means of depth-width ratios of Folds, step 114 20, 70, 72, 82, 101, 115, 158, 161, -, styles of 8, 12, 25 fo, 121 fo, 146, 175, 178 154, 180 -, -, height-width ratios of 17,19 fo, -, suoerposed flexural-slip 32, 82 fo 70 fo, 82, 101, 115, 121, 158, 161, -, - slip 28 ffo, 42 ffo, 82 fo, 86 175, 178 -, symmetrical 11, 22 fo, 40, 46, 48 -, medium-order 23 -, terminology of 8 ffo, 26 -, mineral-lineation relationships of -, troughs of 46 17, 70, 76, 82, 101, 115, 157 fo, -, tubular, see tubular folds 176, 182 -, tundra, see tundra landslide, folds in -, names of 25 fo, 76, 114, 157 -, types of, see types of folds -, nappe 25 -, uniformity of 20 -, open 12 fo, 101, 114, 137, 157, 182 -, upright 157 -, orders of 23 ffo, 44 ffo, 74, 86, 114, -, wavelengths of 9 fo, 12 117, 121 -, widths of 9, 11 ffo, 17 ffo, 115, 175 -, overfolding in 12, 19 fo Foliation 17, 64, 66, 68, 70,76 f., 85 ffo, -, paragenetic sequences of 25 91, 101, 104, 115, 123 ffo, 133, 141, -, parallel 35, 58, 157, 176, 182 148, 150 ffo, 157 fo, 164, 167, 169 fo, -, patterns of, see asymmetry of folds 172, 179; plso 1, 7, 8 [in pocket] -, primary 24 FolIa 67, 132; pI. 1 [in pocket] -, profile geometry of 2, 9, 25, 28, 38, - valley 67, 132 58, 70, 74, 101, 112, 115, 118, 134, Forms of folds 2 fo, 12 fo, 15 ffo, 82, 137, 157 fo, 164, 175 fo, 178 fo 101, 179; pI. 1 [in pocket] -, - -, parallel 2, 9, 38, 58, 112, Fosdals tjern 64, 66 fo, 76, 99 fo, 105 fo, 157 fo, 164, 175 fo, 178 125; pI. 1 [in pocket] -, - -, similar 2, 9, 25, 28, 70, 74, Fossils 63 101, 112, 115, 118, 134, 137, 157, Fossaen pI. 1 [in pocket] 175 fo, 179 Fracture cleavage 17 -, profiles of 8 ffo, 17 f., 28 fo, 42, Friedman, Mo 42 44 ffo, 66, 82, 97, 116, 134, 137, 159 -, properties of 2 ffo, 8 ffo, 35, 70, Generations of folds 2, 17, 51, 165, 101, 115, 158, 165, 175, 178, 180 170 -, - of groups of 2, 17 ffo, 70, 101, Geneses of folds 25 115, 158, 180 Geologic map of Trollheimen pI. 1 -, - of individual 2, 8 ffo, 25, 70, [in pocket] 101, 115, 158, 175, 180 Geometry of, fold profiles 2, 9 -, reclined 76, 154 - waves, transverse 9 -, salt, see salt domes, folds in Gilmour, Po 42 -, scale of 1 Gjeithetta 62, 67, 125, 132; pI. 1 -, secondary 23 [in pocket] -,shapes of 16 Gjevilvasskammene 59,61 fo, 65, 67, -, short-limb heights of 9, 11 ffo, 104 fo, 123; pI. 1 [in pocket] 17 ffo, 97 fo, 175 Gjevilvatn group 59, 61 ffo, 68, 76 fo, -, short limbs of 11 ffo, 21 fo, 170 106, 150, 170; pI. 1 [in pocket] -, similar 12, 25, 28, 68, 70, 74, 82, 59, 61 fo, 65, 67, 104; 101, 114 fo, 118, 152, 154, 157, 176, pI. 1 [in pocket] 182 Gj0rdola pI. 1 [in pocket] -, sizes of 1,12,16,19,73,114,121 f. Gneiss 106,117; pI. 1 [in pocket] -, slip, see slip folds Gneissic quartzite 61; pI. 1 [in pocket] -, spacings of 12, 15, 23, 175 Goguel, Jo 103 -, standard deviations of height-width Grand Saline salt dome 100 fo, 103, ratios of 17, 19 fo, 70, 101, 115, 158 179 13* 196 Author and Subject Index

Granite 6 High-order folds, secondary 23 - gneiss 6, 59, 61 ff., 106; pI. 1 Hills, F. A. 7, 42, 56 [in pocket] Hinge-line node 3, 46 f., 120, 141 Graphitic schist pI. 1 [in pocket] Hinge lines of folds 2, 8, 13, 15 f., 21, Gravbekken pI. 1 [in pocket] 35, 42 ff., 46, 58, 68, 82, 85 ff., 90, Greenland 172 101, 110, 114ff., 120, 141, 146 f., Greenschist 151, 165, 171 f.; pI. 1 152, 155, 157 f., 165, 173, 175 f., [in pocket] 178 f., 182 - facies 151, 170; pI. 1 [in pocket] -- -, character of 15, 35, 70, 115, - terrane 169 ff. 158, 176 Greenstone conglomerate; pI. 1 -- -, curved 2, 15, 35, 42 ff., 46, [in pocket] 115, 146, 157 f., 173, 175 f., 178, Greenwich pI. 1 [in pocket] 182 Growth series of fold types 177 -- -, lengths of 15, 35, 42 f., 70, Gronho 150 ff., 156 f.; pI. 1 115, 158, 176, 179 [in pocket] -- -, long 15, 68, 70, 101, 115, Gmnho fault 151 f., 170 155, 157, 173, 175 f., 182 -- -, short 15, 35, 115, 146 f., Hall, B. A. 42 157 f., 175, 178, 182 Haller, J. 172 -- -, straight 2, 15, 42 ff., 68, 70, Hammerh0 150 f., 154, 165, 170 f; 101, 114 f., 155, 157, 173, 175 f., 182 pI. 1 [in pocket] Hinges of folds 9 ff., 28, 70, 83, 89 f., - synform 151 f., 154, 168, 170 101, 112,114 f., 120 f., 125, 136, 139, -- folds 154, 157, 168, 170; pI. 1 151 f., 157 f., 160, 165 f., 170, 172, [in pocket] 176, 178, 182 - -, meso scopic folds in, see Ham- - -, curved 9, 70, 101, 121, 152, merh0 synform folds 158, 176, 178 "handfold", see flagstone "handfold" - -, sharp 9, 114 f., 121, 158, 176, Hansen, E. 27, 42, 97 f., 181 178, 182 Harland W. B. 180 History, dynamic 180 Harmonic folds 13,25, 68, 101, 114, -, kinematic 180 154, 182 -, movement 27, 35, 37 f. Harmony of folds 13 -, strain 181 Heights of folds 9, 11 ff., 17 ff., 97 f., Holmes, A. 28 175 Holmsen, P. 63,104 ff. Height-spacing ratios of folds 12 Holtedahl, H. 104 f., 152 Height-width ratios of folds 2, 9, Holtedahl, O. 59,63 11 ff., 17 ff., 25, 35, 70 f., 82, 101, Homoclines 104, 106, 148 103, 115, 121, 158, 161, 175 ff. Hornet 104, 106 -- -, means of 17,19 f., 70 f., 82, Hovin groups 63 101, 115, 121, 158, 161, 175, 178 Hogh0 108, 148, 150 f., 156 f., 165, -- -, standard deviations of 17, 167, 170; pI. 1 [in pocket] 19 f., 70, 101, 115, 158 - folds 156 f., 165, 167 f., 170, 173; Hematite 61, 66 pI. 1 [in pocket] Hemre Kam 61, 123, 132, 136, 161 ff.; - -, photographs of 156 pI. 1 [in pocket] Howard, K. A. 7, 42 -- formation 62; pI. 1 [in pocket] High-grade rocks 1, 61, 63, 151, 171 Indre Kam pI. 1 [in pocket] - terrane 172 -- formation 59 ff., 64 f., 68, 70, High-order folds 23 f., 47 ff., 114, 100, 115, 123, 148, 158; pI. 1 154 [in pocket] - -, primary 24 Inflection points of folds 10, 12 Author and Subject Index 197

Ingerson, E. 8 Kinematic mechanisms of folding, see Interference structures 28 ff., 76 ff., mechanisms of folding 157, 165, 167 f. Kinematics 33, 38, 51, 109 f., 142, - -, basins 2, 28 ff., 77 ff., 82 f., 167 ff., 181 85 ff., 91 Kink folds 114 - -, classification by profiles of Knopf, E. B. 8 28 ff. Kongelig Norskc Videnskabers Selskab - -, domes 2, 28 ff., 77 f., 80, 83, Museum 7 85 ff., 89 ff., 167 Kyanitc 6, 151; pI. 1 [in pocket] - -, grids of 32, 77, 83, 85 Kyanite-almandine 6 - -, group I 29 ff., 87, 89 ff., 165 - -, group II 29 ff., 89 f., 165 Lamellae 3 - - , nesting direction of layers in -, in calcite 3 29 -, in quartz 3 - -, photographs of 79 ff. Landslide, tundra, see tundra landslide - -, profile sections of 29 ff., 87, Landslides 33 89,91 Lang tjern 6,61, 154; pI. 1 [in pocket] - -, in Riar basin 76 ff., -- folds 154 f., 157, 165 ff., 170, - -, saddles 28, 32, 77, 80 ff., 85, 173; pI. 1 [in pocket] 89 -- -, photographs of 154 f., 166 - -, stacking axes of 29, 86, 88, 91, -- -, superimposed by later folds, 167 photographs of 166 - -, in Svah", border zone 157, 165, Leith, C. K. 23 167 f. Length of hinge lines, see hinge lines of - -, symmetry axes of 29 folds, length - -, triangular profiles 29 f., 91 Lengths of folds 15 Interlimb angle 29, 32, 137 ff. Lille Kam tjern 119 Intrusives 63 - Svawien pI. 1 [in pocket] Inverse diapirs 78 Limbs of folds 8 f., 11 ff., 21 ff., 28 ff., Irregular, see cylindricity of folds, 47 ff., 51, 69 f., 77, 83, 85, 87, 101, irregular 112, 114 f., 117, 129, 136, 139, 143, - folds 15 f., 35, 115, 158, 160, 175, 152, 157 f., 160, 164, 170 f., 176, 178, 178 182 Irrotational flow 54 ff. - -, curved 9, 70, 101, 115, 152, Irving, E. 93 158, 176, 178 Isoclinal folds 12, 25, 30, 68, 82, 101, - -, long 11 ff., 21 f. 154, 157, 164, 166, 182 - -, planar 51, 114, 182 - -, short 11 ff., 21 f., 170 Jahns, R. H. 11, 22, 125 - -, straight 9, 115, 176 Jefferson Island salt dome 100 f., 103, Linear distributions of fold axes 3, 24, 179 44, 70, 76, 85, 89, 115, 155, 157 f., Kam tjern 6, 61, 69, 125; pI. 1 168, 173, 175 f., 179, 182 [in pocket] Lineation rotation paths 27 f., 30 f., -- formation 59,62, 64, 97, 100, 48 ff., 85 ff., 134 ff., 162 ff. 123, 134, 148; pI. 1 [in pocket] -- -, in discfolds 162 ff. -- valley see Kamtjerndalen -- -, in norfolds 134 ff. Kambekk member pI. 1 [in pocket] -- -, in sahlfolds 85 ff. Kambekken pI. 1 [in pocket] Lineations, mineral see mineral Kamtjerndalen 74, 97, 117 f., 125 lineations Kamtjernhytta 7 Long hinge lines, see hinge lines of folds, Kinematic axes see flow, axes of long - history 180 - limbs of folds 11 ff., 21 f. 198 Author and Subject Index

Lower Hovin group 63 Mesoscopic 1, 17 Low-grade rocks 63, 151 Metamorphic core zones 1, 5, 63, 106, Low-order folds 23 ffo, 47 ffo, 51, 86 fo, 181 89 - grade 6, 178, 180, 182 Lonset anticline 106 - mineral facies 1 Lucas, Jo 7 - rocks 1 fo, 10, 61, 131, 182 - -, high grade 1,61, 63, 151, 171 Mackin, J. Ho 3 fo, 54 - -, low grade 63, 151 Macroscopic 1 - -, medium grade 2 Major 1, 71 fo Metamorphism 179 Mantled gneiss domes 106, 125 Methods of deducing slip-line Mantles 104 orientations, see slip-line Maps 5, 33, 67, 99, 124, 143, 183; orientations, methods of deducing pI. 1, 7, 8 [in pocket] Mica 69 -, index, of Norway 5 see also biotite, muscovite -, plane-table, of flagstone "thumb" - schist 59, 62 fo, 68 ffo, 76, 100, pI. 7, 8 [in pocket] 102 ffo, 114 f., 117, 122 fo, 134, 138, -, of Riar basin sahlfold slip-line 99 148 ffo, 166; pI. 1 [in pocket] -, of Trollheimen 67, 124, 143, 183; Micaceous marble 150 pI. 1 [in pocket] Microcline 5, 59, 61, 68; pI. 1 -, -, geologic pI. 1 [in pocket] [in pocket] -, -, mineral-lineation isogonic 67 - porphyroblasts 59 -, -, norfold axial-surface 124 Microscopic 1 -, -, norfold slip-line 143 Midtre Kam 65, 97, 132; PI. 1 -, -, strain-facies 183 [in pocket] -, of tundra landslide 33 -- formation 62; pI. 1 Marble 150, 151, 166; pI. 1 [in pocket] [in pocket] Martin, Ho 42 Mineral assemblages 1 f. Massive rocks 114 fo, 121 - cleavages 17, 69 Mattauer, Mo 180 - facies 1, 151 Matthews, Do Ho 11 fo - lineations 17, 66 ffo, 76, 82, 84 fo, Maximum heights of folds 19,175 87, 89 fo, 94 ffo, 98 ffo, 105 ffo, 111, - height-width ratios 18 115, 125 fo, 129 ffo, 145, 148 ffo, - means of height-width ratios 19 153 fo, 157 fo, 162 fo, 168 ffo, 174 ffo, Maxwell, J. Co 7 178, 182; plso 1, 7, 8 [in pocket] McDowell, Ao No 103 - -, augen relationships of 68, 107, McIntyre, Do Bo 1, 8, 29, 42 109, 154, 182; pI. 1 [in pocket] Mean orientations of folded surfaces - -, boudinage relationships of 10, 12, 22, 49 fo, 87 68 fo, 107 ffo, 149 fo, 154, 182; pI. 1 Means, arithmetic 19 fo [in pocket] - of depth-width ratios 20, 70, 72, - -, discfold 172,176,178,182 82, 101, 115, 158, 161, 175, 178 - -, in discfold facies 172, 176, 178, - of height-width ratios 17, 19 fo, 182 70 fo, 82, 101, 115, 121, 158, 161, - -, in eastern homo cline 148 ffo 175, 178 - -, fold relationships of 17, 70, Mechanisms of folding 8, 33, 42, 51, 76, 82, 101, 115, 157 fo, 176, 182 112, 134, 137, 139 f., 182 -- isogonic map of, in Trollheimen Medium-grade rocks 2 67 Medium-order folds 23 - -, norfold 145, 176, 182 Mellomfjellet 62, 65 ffo, 72, 75, 97, -- in norfold facies 145, 176, 182 105, 114, 116, 120, 123 ffo; pI. 1 - -, pre-sahlfold, see mineral [in pocket] lineations, regional east-west Author and Subject Index 199

Mineral lineations, regional, east-west, in Nonsh0 border fault 150 f., 165, 169, Trollheimen 67 f., 105, 131 ff., 140, 172; pI. 1 [in pocket] 148 ff., 153 f., 162, 168, 172 - fault see Nonsh", border fault - -, in Riar basin 66 ff., 98 H., Norfold facies 114 ff., 172, 174, 177 f., 105 ff., 125, 129 ff., 153 181 ff. - -, sahlfold 102, 107 f., 133 ff., - -, definition of 145 162,182 - -, discfold facies compared to - -, in sahlfold facies 102, 107 H., 174, 176 ff. 133 ff., 162, 182 - -, distribution in Trollheimen - -, in strain facies 107, 145, 172 f., 181, 183 182 - -, fabric relationships of 145, 182 - -, in Svah0 border zone 149, - -, flow environment of 145 ff., 153 f., 157, 162 f., 168 H. 177 f., 182 - -, in Svarthammer anticline 66 f., - -, - -, comparison to flow 130 H., 153 environments of other facies 177 f. - -, in Trollheimen 66 ff., 98 H., - -, - -, convergent flow in 105 ff., 125, 129 ff., 148 ff., 153 f., 146 f., 178, 182 162 f., 168 ff. - -, - -, curvature of stream lines -- -, isogonic map of 67 in 146 f. -- -, regional trend of 67 f., 105, - -, - -, fabric relationships to 131 ff., 140, 148 ff., 153 f., 162, 168, 145, 182 172 - -, - -, parallel flow in 147, - -, in basin 149, 172 178, 182 - -, in western zone of eastern - -, - -, principal stream surfaces homocline 148 ff. in 145 ff. Minilla pI. 1 [in pocket] - -, - -, rotational flow in Minor 1 146 f., 178, 182 Miogeosynclinal sediments 63 - -, - -, spatially discontinuous Mixed asymmetry 25, 70, 75, 129 147 Modal analyses of flagstone 61 - -, - -, stream lines in 145 H. Monoclinic symmetry 55 - -, - -, velocity gradient flow in Mountain building 181 145, 147, 178, 182 - chains 1, 5, 52, 106, 181 - -, index-fold characteristics Movement history 27, 35, 37 f. 114 ff., 182 Miihlberger, W. R. 100 f. - -, intensity of development in Muret, G. 105 Trollheimen 181, 183 Muscovite 61, 66; pI. 1 [in pocket] - -, mineral lineations in 145, 176, Myer, G. H. 7 182 - -, sahlfold facies compared to Names of folds 25 f., 76, 114, 157 174, 176 ff. Nappe complex, Caledonides 5, 63 - -, strain features in 145, 182 - emplacement 1, 105, 150, 169 H. - -, summary of 182 - folds 25 Norfolds 26, 114 H., 144 H., 150, 174, Nappes 52, 104 ff., 150, 169 H., 181 176 H., 182; pI. 1 [in pocket] -, in Pennine Alps 105 -, arch of axial surfaces of 123 H., 133 f. -, in Trollheimen 104 ff., 150, 169 ff. -, asymmetry of, in Trollheimen Nettleton, L. L. 103 126 ff., 144 Nonaffine slip 111 -, "average" 127 H. Nonpenetrative slip 27 -, axial surfaces of, anticline group Nonsh", 61, 150 ff., 154, 161 f., 165, 123 ff., 133 171; pI. 1 [in pocket] -, - -, arch of 123 H., 133 f. 200 Author and Subject Index

Norfolds, axial surfaces, basin group Norway, index map of 5 123, 125, 133 -, - -, configuration, in Trollheimen O'Driscoll, E. S. 28, 30,32, 78 123 ff. Oligoclase 5, 61, 150; pI. 1 [in pocket] -, - -, fan of 125, 133 - schist pI. 1 [in pocket] -, - -, map of, in Trollheimen Oligoclase-quartz schist 61; pI. 1 124 [in pocket] -, cleavage banding in 117 Open folds 12 f., 101, 114, 137, 157, -, cleavage relationships of 115, 182 117 f., 121, 125 ff., 129, 132 f., 145, pI. 1 [in pocket] 176 f., 182 Orders of folds 23 f., 44 ff., 74, 86, -, description of 114 ff. 114, 117, 121 -, discfolds compared to 176 Ordovician 63 -, fan of axial surfaces of 125, 133 Orientation of slip lines, see slip-line -, flattening of 137 ff. orientations -, fold axes of, in Trollheimen 129 ff. Orthorhombic symmetry 55 -, - -, configuration of, in Troll- Oslo 4 f; pI. 1 [in pocket] heimen 129 ff. Overfolding 12, 19 f. -, lineation rotation paths in 134 ff. -, macroscopic 114 Page, B. M. 42 -, mechanism of development of "palm" of flagstone "handfold" 66, 137 ff. 125 -, mineral-lineation relationships of Paragenetic sequences of folds 25 115, 125 f., 129 ff., 145, 176, 182 Parallel flow 53 ff., 110, 147 -, name of 25 f. - folds 35, 58, 157, 176, 182 -, origin of, from discfolds 176 - geometry of folds 2, 9, 38, 58, 112, -, -, sahlfolds from 177 157 f., 164, 175 f., 178 -, photographs of 116 ff. Parker, R. B. 7 f. -, sahlfolds compared to 176 f. Parker, T.]. 103 -, slip-line orientations of, map of, in Patterns of folds, see asymmetry of Trollheimen 143 folds -, slip lines of 135 ff., 147 Penetrative slip 27 -, - -, mean orientations of 140 ff. Pennine Alps 105 -, - -, solutions for orientations of Photographs 34, 60, 73 ff., 79 ff., 135 ff. 116 ff., 154 ff., 159 f., 166 -, superimposed on sahlfolds, -, of discfolds 159 f. photographs of 119 f. -, of flagstone 60 -, in Trollheimen, asymmetry of -, of H0gh0 folds 156 126 ff., 144 -, of interference structures 79 ff. -, -, axial-surface configurations in -, of Lang tjern folds 154 f., 166 123 ff. -, of norfolds 116 ff. -, -, e'l.rly-structure orientations -, of sahlfold interference structures compared with 125 ff., 144 79 ff. -, -, fold axes of 129 ff. -, of sahlfolds 73 ff. -, -, slip-line orientations of 142 ff. -, of superposed folds 79 ff., 119 f., -, -, spatial relations of 122 ff. 166 Norges Geologiske Unders0kelse 7 -, of tubular folds 79 f. Normal asymmetry 24 f., 48, 70, 74, -, of tundra folds 34 77,85, 101, 115, 117, 128 f., 131, Plagioclase 59,61 158, 178 Planar distributions of fold axes 33, Norway 2, 4 f., 33 f., 61, 63; pI. 1 36 ff., 40, 44, 51, 152, 157 f., 162, [in pocket] 164, 175 f., 178, 182 Author and Subject Index 201

Planar limbs of folds 51, 114, 182 Riar basin 64 ff., 70 ff., 76, 82, 97 ff., Platt, L. B. 7 103 f., 106 ff., 113 f., 123, 125 f., Polygons of intersections 15, 17, 31 f., 128 f., 131 ff., 139 f., 143 ff., 150, 86 ff., 91 ff., 165, 167 152 f., 157, 162, 170, 175, 179 f. Porphyroblasts 59 - -, anticline hypothesis for form of 100 ff., 106 f. Porter, S. C. 42 - -, augen in 68, 107 Precambrian 63 - -, boudinage in 68 f., 107, 110 f.; Preferred orientations of fold axes 21, pI. 1 [in pocket] 24, 36 ff., 44, 70, 76, 85, 89, 115, - -, cone axis of 66 152, 155, 157 f., 164, 168, 173, 175 f., - -, - of converging folds in 64, 178 f., 182 66, 100 Primary folds 24 - -, - of mineral lineations in 66 f. Profile geometry of folds, see folds, - -, converging sahlfold slip lines in profile geometry 97 ff. Profiles of folds 8 ff., 17 f., 28 f., 42, - -, cross sections of sahlfold stream 44 ff., 66, 82, 97, 116, 134, 137, 159 lines in 111 -, of interference basins, see - -, "culmination" in 66 f., 125 interference basins, profiles - -, development of 64,100 ff., 114, -, of interference domes, see inter• 133, 140, 150 ference domes, profiles - -, rotation of sahlfold axes in Properties of folds see folds, properties 112f. of - -, -, salt-dome analogy for Protodiscfolds 175 100 ff., 106 f., 179 f. - -, -, strain involved in 111 ff. Prototypes of folds 177 - -, faults in 104; pI. 8 [in pocket] - -, form of 100 ff. Quartz 3, 59, 61; pI. 1 [in pod!:et] - -, interference structures in 76 ff. - deformation lamellae 3 - -, macroscopic folds in 64 ff. - schist 2, 6, 59 ff., 70, 115, 156, 158, - -, mesoscopic structures in 66 ff. 178; pI. 1 [in pocket] - -, mineral lineations in 66 ff., see also flagstone 98 ff., 105 ff., 125, 129 ff., 153 Quartzite 6, 59, 61 ff., 68, 106, 162; - -, norfolds in 114, 123 ff. pI. 1 [in pocket] - -, sahlfolds in 68 ff. - -, -, slip-line map of 99 Ramsey, f. G. 3, 10, 12, 23, 27 ff., - -, syncline hypothesis for form of 31 f., 48, 50, 70, 78, 82, 85 111, 157 104 ff. Ratios, depth-width 2, 13 f., 18 ff., - -, tubular folds in 76 ff. 25, 35, 70, 72, 101, 115, 158, 161, Riaren 60 f., 65 f., 71 ff., 125; pI. 1 175 f., 178 [in pocket] -, height-spacing 12 Richardson, S. W. 7 -, height-width 2, 9, 11 ff., 17 ff., Rim anticline 103 25, 35, 70 f., 82, 101, 103, 115, 121, - syncline 100, 107 158, 161, 175 ff. Rock cleavage 17 - units in Trollheimen 2, 4, 6 f., Reclined folds 76, 154 59 ff.; pI. 1 [in pod!:et] Rensbekk formation 61 f.; pI. 1 Rodgers, J. 7, 180 [in pocket] Root zones 104,170 Rensbekken 61; pI. 1 [in pod!:et] Rosenqvist, T. T. 106 Reverse asymmetry 24 f., 48, 77, 85, Rotational flow 53 f., 56 ff., 110 f., 89, 101, 115, 117 146 f., 178 f., 182 Reynolds, D. L. 28 Rouse, H. 52 202 Author and Subject Index

Rug 3 f. Sahlfold facies, salt-dome folds classi- Rule of location 23 f., 51 fied in 179 - of order 23 f., 51 - -, strain features in 107, 182 Roros group 63 - -, summary of 182 - interference structures, photographs Saddles, see interference structures, of 79 ff. saddles Sahlfolds 26, 68 ff., 79 ff., 94 ff., Sahlfold facies 64 ff., 114, 132 ff., 140, 99 ff., 107 ff., 119 f., 125 f., 132 ff., 145, 172, 174, 177 ff. 140 ff., 144, 146, 150, 174 ff., 179, - -,augen in 68,107,109,177,182 182; pI. 1 [in pocket] - -, boudinage in 68 f., 107 ff., 177, -, augen relationships of 107, 109, 182 182; pI. 1 [in pocket] - -, boundary of development in -, boudinage relationships of 107 ff., Trollheimen 126, 132 ff., 183 182; pI. 1 [in pocket] -, cross sections of stream lines in -, cleavage relationships of 68 ff., Riar basin 111 83 ff., 87 ff., 90, 94, 107, 177, 182 -, definition of 107 -, constriction-slip folding to produce - -, discfold facies compared to 111 f. 174 ff. -, description of 68 ff. - -, distribution in Trollheimen -, discfolds compared to 174 ff. 181,183 -, displacement ratio for 97 f. - -, fabric relationships in 107, 109, -, flattening of 112 f. 182 -, identification of, as slip folds 82 f. - -, flow environment of 107 ff., -, lineation rotation paths in 85 ff. 177 ff., 182 -, mechanism of development of - -, - -, comparison to flow 111 ff. environments of other facies 177 f. -, mineral-lineation relationships of - -, - -, convergent flow in 70 f., 76, 84 f., 87, 89 f., 94 ff., 98 ff., 107 ff., 146, 178, 180, 182 104 f., 107 ff., 182 - -, - -, curvature of stream lines -, name of 25 f. in 110 ff. -, norfolds compared to 176 f. - -, - -, fabric relationships to -, origin of, from discfolds 175 f. 109 f., 182 -, origin of, from norfolds 177 --, - -, principal stream surfaces -, photographs of 73 ff. 1ll 107, 109 ff. -, in Riar basin 68 ff. - -, - -, rotational flow in -, salt-dome folds compared to 100 f., 110 ff., 146, 180, 182 103, 179 - -, - -, salt-dome flow environ• -, slip lines of 82, 86 ff., 107 f., 110, ment compared to 179 f. 140,144 - -, - -, stream lines in 107 ff., -, - -, convergence of 97 ff., 146 177 ff. - -, - -, velocity gradient flow in -,--, fold-axis relationships of 107 ff., 113, 178, 180, 182 95 ff. - -, index-fold characteristics -, - -, map of, in Riar basin 99 68 ff., 182 -, - -, mean orientations of 93 ff. - -, intensity of development in -, - -, mineral-lineation relation- Trollheimen 181, 183 ships of 95 f. - -, mineral lineations in 102, 107 f., -, - -, schistosity-intersection 133 ff., 162, 182 relationships of 94, 96 - -, norfold facies compared to -, - -, significance of mean 174, 176 ff. orientations of 93 f. Author and Subject Index 203

Sahlfolds, slip lines, solutions for orien• Separation angles, symbols of 37 tations of 84 ff. - -, use of 41 f., 50 f. -, superimposed by nor folds, - arcs 36 f., 93, 157 photographs of 119 f. - lines 40, 46 H. -, superposed 76 ff. Shapes of folds 16 -, tubular, see tubular folds Sharp hinges, see hinges of folds, sharp Salt 103 f., 179 f. Shear couples 23, 35, 37 ff., 169 H. - closures 101, 103 - stress 38 ff., 164 f., 169 f. - domes 1, 4, 100 H., 179 f. Sheet-dip 10 - -, flow environment of, 179 f. Short hinge lines see hinge lines of folds, - -, - -, fabric relationships to short 179 Short-limb heights of folds 9, 11 H., - -, - -, sahlfold-facies flow 17 H., 97 f., 175 environment compared to 179 f. Short limbs of folds 11 ff., 21 f., 170 - -, folds in 1, 100 ff., 103, 179 Sillimani te 151 - -, -, description of 101, 103, Silurian 63 179 Similar folds 12, 25, 28, 68, 70, 74, 82, - -, -, sahlfold-facies classification 101, 114 f., 118, 152, 154, 157, 176, of 179 182 - -, -, sahlfolds compared to 100 f., - geometry of folds 2, 9, 25, 28, 70, 103, 179 74, 101, 112, 115, 118, 134, 137, Salt folds, see salt domes, folds in 157, 175 f., 179 Sander, B. 15, 109 Sinistral asymmetry of folds 22 Schist see mica schist Si·vertsen, E. 7 Schist-amphibolite sequence 62 f., 100, Sizes of folds 1, 12, 16, 19, 73, 114, 102 H., 114, 150 121 f. Schistose rocks 114 f., 121, 145, 176 f., Skehan, J. W. 25 182 Skrikh0 150; pI. 1 [in pocket] Schistosities, zone axes of 84 f., 87, 89 Slaty cleavage 17 Schistosity 17, 32, 59, 68, 70 f., 83 H., 87 ff., 94, 96, 107, 115, 121, 126 ff., Slettii valley 67, 125, 132 131 H., 140, 144 f., 152, 154, 157 f., Slettiien pI. 1 [in pocket] 171 f., 175 ff., 182; pIs. 1, 7, 8. [in Slide 151 f. pocket] Slip 8,23 f., 27 f., 31 f., 35, 37 f., 41 ff., Scott, W. H. 7, 42, 96 f., 181 46 ff., 82 f., 107 f., 110 f., 113, 141, Secondary folds 23 145, 147, 164 f., 168 f., 172 f., 179 Sedimentary facies 1 - cleavage 17, 115, 121, 145, 176 f., - rocks 1 f., 10, 63 182 Sediments 63, 103, 104 -, in flexural-slip folds 8, 23, 27, 57, Semiapical angle 17, 27 164, 172 Separation angles 33 ff., 72, 84 ff., 89, -, in slip folds 8, 27, 42, 44, 46 f., 57, 92, 152 f., 162, 164 f., 167 f., 170, 107, 110, 145 172 f., 178 - folding 8, 24, 27, 82 f., 85, 97, - -, geometry governing 33 H. 110 f., 134, 136 f., 140 f., 145, 147, - -, - -, in flexural-slip folds 165, 179, 182 33 H. - folds 27 ff., 42 ff., 56 ff., 97 f., - -, - -, in slip folds in planar 107, 110, 112, 114, 179 layers 42 ff. - -, displacement ratio for 97 f. - -, - -, in superposed slip folds - -, finite hinge lines of 42, 110, of multiple orders 47 H. 179 - -, - -, --- of a single order - -, geometry of 27 ff., 42 ff, 82, 44 H. 86, 112 204 Author and Subject Index

Slip folds, rotation in, of asymmetry Slip-line orientations, solutions, means 47 f. of 93 f., 140 ff. - -, -, of hinge lines 42 f. -, -, norfold 134 ff. - -, -, of limbs 24 f., 47 ff. -, -, sahlfold 84 ff. - -, -, of lineations 3, 27 f., 31, -, -, from separation angles 85, 112 84 ff., 92, 152 f., 162, 164 f. - -, -, of planes 31, 47 ff. -, -, - -, fIexual-slip folds 152 f., - -, sahlfolds identified as 82 f. 162, 164 f. - -, slip in 8, 27, 42, 44, 46 f., 57, -, -, - -, superposed slip folds 107, 110, 145 84 ff., 92 - -, stream lines in 57 f., 107, 109, -, in Svaho border zone 164 ff. 145 Slip lines 3, 27 ff., 35 ff., 39 ff., 46, - -, - surfaces, principal, in 56, 48 ff., 57 f., 82, 86 ff., 93, 96 ff., 107 f., 110, 141, 143ff., 147, 165, 169 107, 109, 145, 179 -, stream-line identification of 57 f., - -, superposed 28 ff., 42 ff., 82 f., 86 107, 145, 173 slip-line orientations 3 f., 27 ff., 82, -, nonaffine 111 86 ff., 107 f., 134 ff., 164 f., 167 ff. -, non penetrative 27 -, methods of deducing 3 f., 27 ff., 82 Slip planes 28 ff., 35, 37 ff., 46 ff., 56 f., -, - -, from deformed lineations in 97,110,172 slip folds (Weiss) 3, 27 f. Sod, tundra 1, 33 ff., 38 ff., 58, 178 -, - -, from fold asymmetry see Spacings of folds 12, 15, 23, 175 methods of deducing from separation Sparagmite 5, 63 angles Specular hematite see hematite -, - -, from hinge-line nodes 3, Sphene 61 44 ff. Spherical symmetry 55 -, - -, from interference structures Standard deviation 19 f. 3,28 ff. Standard deviations of height-width -, - -, - -, group I 30 ff. ratios 17, 19 f., 70, 101, 115, 158 -, - -, - -, triangular 30 Stanley, R. S. 7,23,42, 181 -, - -, from separation angles Steady flow 54 3, 33 ff. Step folds 114 -, - -, - -, flexural-slip folds Storlifjellet 62, 64 f., 97, 99 f., 106, 33 ff. 114,123; pI. 1 [in pocket] -, - -, - -, superposed slip folds Straight hinge lines, see hinge lines of 47 ff. folds, straight -, - -, - -, slip folds in planar Straight limbs of folds, see limbs of layers 42 ff. folds, straight -, solutions for 3, 28, 84 ff., 134 ff., Strain 2, 4, 38 ff., 58, 82, 111 f., 121, 152 f., 162, 164 ff. 140, 146, 157, 173 f., 176, 181 -, -, from deformed lineations in slip -, triaxial 111 folds (Weiss) 85 ff., 134 ff., 165 ff. - axes 38 ff., 112 -, -, discfold 152f., 162, 164f,. 168f. - ellipsoids 53, 111 f. -, -, from fold asymmetry, see - environments 1,3 solutions for, from separation angles - facies 1 ff., 8,25, 174 ff. -, -, from hinge-line nodes 141 - -, augen in 107, 109, 146, 173 f., -, -, from interference structures 177, 182 86 ff., 91 f., 165, 167 f. - -, boudinage in 107 ff., 146, -, -, - -, group I 86 ff., 91 f., 165 173 f., 177, 182 167 f. - -, concept of 25,174 ff. - -, orientations, solutions for, from - -, definition of 178 interference structures, triangular - -, general remarks on 1 ff., 180 f. 91£. - -, maps of 181,183 Author and Subject Index 205

Strain facies, map of, in Trollheimen Svah0 border zone, flexures in 152 f., 183 165, 167ff. - -, mineral lineations in 107, 145, -- -, foliation in 148, 150 H., 172 f., 182 164, 169 f. - -, rationale for 177 ff. -- -, Hammerho synform in - -, subfacies of 181 151 f., 154, 168, 170 - -, summary of three 182 -- -, -- folds in 154, 157, - -, uses of 1, 180 f. 168, 170; pI. 1 [in poCket] - features 1 H., 52, 56 H., 157, 178, -- -, Hogh0 folds in 156 f., 165, 180 f. 167 f., 170, 173; pI. 1 [in poCket] Strand, T. 5, 63, 105 f. -- -, interference structures in Stratigraphic section measured in 157, 165, 167 f. Trollheimen 61 f. -- -, Lang tjern folds in 154 f., Stream lines 52, 54, 56 H., 107, 109 H., 157, 165 H., 170, 173; pI. 1 145 H., 172 f., 179 [in poCket] - -, in flexural-slip folds 57 f., -- -, macroscopic structures in 172 f. 150 H. - -, in slip folds 57 f., 107, 109, -- -, meso scopic structures in 145 153 ff. - -, slip-line identification of 57 f., -- -, mineral lineations in 148 H., 107, 145, 173 153 f., 157, 162 f., 168 H. - surfaces, principal 54, 56 H., 107, -- -, nappe emplacement of 109 f., 145 f., 172, 179 169 H. - -, - in flexural-slip folds 56 f., -- -, slip-line orientations in 172 164 H. - -, - in slip folds 56, 107, 109, - zone see Svaho border zone 145, 179 Svarthammer anticline 64 H., 76, 100, - tubes 52 H. 104, 106, 114, 123, 125 H., 130 H., Stress 3, 38 H., 121, 169 143, 145, 148, 150, 153 - axes 38 H., 164 - -, mineral lineations in 66 f., - fields 3, 38 H. 130 H., 153 - indicators 3 - -, norfolds in 114, 123 H., 143 Styles of folds 8, 12, 25 f., 121 f., 146, - -, origin of, as mantled gneiss 154, 180 dome 106 Storen group 63 - formation 61 f., 117; pI. 1 Subfacies, almandine-amphibolite facies [in poCket] 151 Svarthammeren 65, 100, 123 f.; pI. 1 -, greenschist facies 151 [in pocket] Superposed flexural-slip folds 32, 82 f. Svarthetta pI. 1 [in poCket] - folds, photographs of 119 f., 166 Symmetrical folds 11, 22 f., 40, 46, 48 - slip folds 28 H., 42 H., 82 f., 86 Symmetry 9, 52, 55 f., 105 Svaho 6, 65, 150 H., 159 f., 162 H., 170, -, axial 55 pI. 1 [in poCket] -, monoclinic 55 - border zone 148 H., 157, 161 f., -, orthorhombic 55 164 f., 167 H., 173 -, spherical 55 -- -, augen in 154, 173 -, triclinic 55 -- -, boudinage in 154, 173; pI. 1 Syncline hypothesis for form of Riar [in poCket] basin 104 ff. -- -, boundaries of 150 f., 170 -- -, discfolds in 150, 157 H., Terminology of folds 8 H. 168 H., 173 Thicknesses of rock units in Trollheimen -- -, faults in 150 H., 165, 169 H. 61f. 206 Author and Subject Index

"Thumb" of flagstone "handfold" 66, Trollheimen, norfolds, early-structure 69, 71 f., 76 f., 79 H., 85 f., 88 f., orientations compared with 125 ff. 100, 104, 112, 129; pis. 7, 8 -, -, fold axes of 129 H. [in pocket] -, -, slip-line orientations of 135 ff., Traces of axial surfaces 9 H., 19, 29, 147 77; pIs. 1, 7, 8 [in pocket] -, -, spatial relations of 122 H. Triaxial strain 111 -, rock units in 59 ff. Triclinic symmetry 55 -, - -, ages of 62 f. Trollheimen 2 H., 8, 12, 15, 25, 27 f., -, - -, correlation of, to Trondheim 31 H., 59 ff., 67 f., 70, 100, 103 H., basin 63 108, 114 f., 121 ff., 131, 133 f., 143, -, - -, densities of 61 f., 103, 106 145 H., 150 f., 158, 169 f., 174, -, - -, descriptions of 59, 61 f.; 177 H.; pI. 1 [in pocket] pI. 1 [in pocket] -, augen in 59, 68, 107, 154, 173 f.; -, - -, measured section of 61 f. pI. 1 [in pocket] -, - - , thicknesses of 61 f. -, boudinage in 68 f., 107, 110 f., -, root zone in 104, 170 149 f., 154, 173 f.; pI. 1 [in pocket] -, sahlfold facies in, distribution of -, boundary of sahlfold-facies 181, 183 development in 126, 132 H., 183 -, - -, intensity of development of -, cross sections of 65, 101, 105 181, 183 -, discfold facies in, distribution of -, sketch of 4 f. 181, 183 -, structural subdivisions of 64 f. -, - -, intensity of development of -, tectonic setting of 5 181, 183 59; pI. 1 [in pocket] -, location of 4 f. - granite 59, 62 f., 106, 125; pI. 1 -, mantled gneiss domes in 106, 124 f. [in pocket] -, maps of 67, 124, 143, 183; pI. 1 Trondheim 4 f. [in pocket] - basin 6, 63, 148 f., 151, 169 f. -, -, geologic pI. 1 [in pocket] - -, mineral lineations in 149, 172 -, -, mineral-lineation isogonic 67 - -, rock units in 63 -, -, norfold axial-surface 124 - schists 63 - -, nor fold slip-line 143 "True" mean 19 f. -, -, strain-facies 183 - standard deviation 19 f. -, metamorphism in 5 f. Trusheim, F. 100 -, mineral lineations in 66 H., 98 H., Tubes, see tubular folds 105 H., 125, 129 H., 148 ff., 153 f., Tubular folds 76 ff. 157, 162 f., 168 H. - -, cone axes of 98 f. -, - -, cone of 66 f., 100 - -, description of 76L -, - -, regional trend of 67 f., 105, - -, grid patterns of 77 f. 131 ff., 140, 148 ff., 153 f., 162, 168, - -, localities of 76, 99; pI. 1 172 [in pocket] -, nappe emplacement in 169 ff. - -, photographs of 79 f. -, - of flagstone in 104 ff., 150, - -, in Riar basin 76 ff. 169 ff. - -, variation of fold axes in -, norfold facies in, distribution of 82, 84 f. 181, 183 Tundra folds, see tundra landslide, -, - -, intensity of development of folds in 181, 183 Tundra landslide 1, 33 ff., 42, 58, 178 -, norfolds in 114 ff. -, -, asymmetry of 126 ff. - -, cross section of 33 -, -, axial-surface configurations of , drag in 39 ff. 123 ff. - -, flow environment of 58, 178 Author and Subject Index 207

Tundra landslide, flow environment, Uniformity of folds 20 discfold-facies flow environment Unsteady flow 54 compared to 178 Upper Hovin group 63 - -, fold-axis fabric compared to Upright folds 157 movement history of 36 ff. - -, folds in 1, 33 ff., 42, 58, 178 Valley of FolIa 67, 132 - -, -, asymmetry of 33, 35 ff. - of Kam tjern see Kamtjerndalen - -, -, axial-plane fabric of 39 van Hise, C. R. 23 - -, -, description of 35 Velocity of flow 54 - -, -, discfold-facies classification - gradient flow 53 f., 56 ff., 107 ff., of 178 113, 145, 147, 172 f., 178 ff., 182 - -, -, discfolds compared to 178 Vida Ie, R. 7 - -, - fold-axis fabric of 36 ff. Volcanics 63 - -, -, photographs of 34 Walton, M. S. 7 - -, - separation angles of 36 ff. Waltson, G. S. 93 - -, -, zone axis of axial planes of Wavelengths of folds 9 f., 12 39 - of transverse waves 9 - -, map of 33 Waves, transverse 9 ff. - -, movement history of 35 -, -, amplitudes of 9 - -, rotation due to drag in 39 ff. -, -, wavelengths of 9 - -, strain analysis of 38 ff. Wegmann, E. 8, 29 - -, stress analysis of 38 ff. Weip, L. E. 1, 3, 8, 15 f., 27 f., 31, - sod 1, 33 ff., 38 ff., 58, 178 48, 50, 82, 85, 109, 123, 152 Turner, F. J. 8, 16, 42, 123, 152 Weiss method 3,27 f., 137, 141 Tuttle, O. F. 6 Western zone, eastern homo cline Twin lamellae in calcite 3 148 f., 151 Twiss, R. J. 7, 42 --,--, mineral lineations in Types of flow, see flow, types of 148 ff. - of folds 3, 25 f., 174 ff. White, W. S. 11,22, 125 - -, classification by style of 25 f. Widths of folds 9, 11 ff., 17ff., 115, - -, comparison of, in Trollheimen 175 174 ff. Winchell H. 7, 96 - -, growth series of 177 "Wrist" of the flagstone "handfold" - -, names of 25 f. 66,72,114 - -, prototypes of 177 Yale University 7 - -, rolk-type effect on 2,25 f., 174 Tyrikvamfjellet 65, 148 f., 151, 165, Zone axes 39 f., 84 f., 87, 89, 123, 137, 170 f.; pI. 1 [in polket] 142 - -, of axial surfaces 39 f., 123, Ultramafic rolks pI. 1 [in polket] 137, 142 Uniform flow 54 - -, of schistosity 84 f., 87, 89 Errata

Page 110, line 29: for in read is Page 112, line 21: for 25° read 35° Page 112, line 34: for are read is Page 129, line 3: for fingers read 'fingers' Page 129, Fig. 57: disregard dotted line in upper histogram; disregard entire lower histogram Page 132, line 17: for of norfold-facies structures read of the norfold facies Page 133, lines 19-20: for sahlfold-facies structures read the sahlfold facies Page 133, line 38: for sahlfold-facies structures read the sahlfold facies Page 133, line 42: for structures of the norfold facies read norfold facies Page 157, line 32: for Thickness read Thicknesses Page 165, line 40: for group II read group I Page 167, caption to Fig. 74, line 12: for basin read dome Minerals, Rocks and Inorganic Materials

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Volumes being planned: K. KEIL: Quantitative Microprobe Analysis F. LIPPMANN: Carbonate Minerals of Sedimentary Rocks N. PETERSEN and A. SCHULT: Magnetic Properties of Rockforming Minerals and Rocks A. RITTMANN et al.: The Mineral Association of Volcanic Rocks

Subseries "Experimental Mineralogy": P. M. BELL, S. W. RICHARDSON, and M. CH. GILBERT: Synthesis and Stability of the Aluminum Silicate Minerals G. M. BROWN and D. H. LINDSLEY: Synthesis and Stability of Pyroxenes W. G. ERNST: Blueschist Facies Metamorphism, Petrology and Tectonics H. P. EUGSTER and D. R. WONES: Synthesis and Stability of Micas J. J. FAWCETT: Synthesis and Stability of Chlorite and Serpentine I. KUSHIRO: Experimental Petrology of Gabbro D. H. LINDSLEY: Iron-Titanium Oxides: Crystallography, Crystal Chemi• stry, and Synthesis M. S. PATERSON: Experimental Rock Deformation

Subseries "Isotopes in Geology": M. L. JENSEN: Biochemistry of Sulfur Isotopes J. L. POWELL and G. FAURE: Strontium Isotope Geology

Cove' EXPLANATION

-- Foliation trace '>- Fol ia ti on alt itude to' -.... Schi ltality trend ""'-..... Fold axil t.''-. Mineral li neation - A" ial trace of antiform -~-- Ax ial t race of Iynform ----_... Fault trace

o 1 ", .'.r.

N

COver

PL 8, Plane-table map of • amaJ.l area within the eastern tip of the f1atptone "'thumb" 00 B1A.I». Coouo!: 253 rod ,boIS Explanation Conlacts ..-- Solid wllm dtfu>!le, '''''-'-', cIub

PI. t. Geologic map oilOlllbeulem ' Explanation Rock units Where I unit dilpllYl Grmuchilt facies, IIPpell1 in the denominator of th. unit Iymbol; wbere AlmlOdlne·amphl· bollte faclel, no detflllition Ippell1 In the unJ! Iymbol.

R.... beki formltion. Biollt.· epldcte-quartl'ollloctue lObiit with Imphlbollte lOd quarlllte. Bra, amphibolite memo ber. Bre, calc·lIJicate mrmber. Bllb. IfOIIP, undU· fmollated. Within Grmuchlst KIlO TJem formation. foties, InterlayemS Interl.ayem! and (matlonal bI· Jtmuc:hilt and Jt..... nary mica lObiit Ind amphlboUte. ltone eo!I(iornmte, witb _y Ilmandine and with quartlile. .yanlte. Bkb, Kambekkmember: varltlated, 60011 layem! It· quence of ampblbolite and epl· dote· quarll . 011&00... lObitt. Bku, ulltamlfit body.

Ind~ liam formation. 0 Finely fOUlted, muscovite· micro· cllne·quartl lObilt Iftaptonr) wllh Intell'yerrd aUlen Inrits.

Gjevllvaln IrouP, un· dl«ertntl.ated. Svarthammor formation. 8 Mwive,medlum·(rainrd, biotitr. Finely foll.led,mwlv. quartl·microcUne-olilocllltpolll muscovite· microcJine with aUfen ",.ill. • quartz lObist Iftlll' ItOlle) and quartllte, with amphibolite and binary mica lObitt. G" Mldlre KIlO formation. ~ au,en 111,111 mrmbon. Black Jtapbltie lObilt, quartllt., Gm, marble member. marble, and amphibolit •. GI, Imphlbollte mtm· hm. ~ HfIIlft Kim formation. L.::.J Uniform aequmce of mwiv. quartzite and qUill! lObilt, be· comint rneitslc at bait by ad· dltion of f.ldlpan and biotit •.

TrollbeUa (l'lnIte. W"'ve, uniform, red (l'lnIte pelsl, dlspl.y· tnt prominmt mlnml lIWIIon.

:utem Tro1lhcirncn, NorwlY N

EXPLANATION

'-- FoliatIon trace ...... FoliatIon altl Iud. "I" _ SchiltOllty trend .. Schlstolity ottltude ...... 0 Fold OKis .., Mineral Iln.otion AXIal trac. of anll'orm ---...... ------Axial trace of 'ynform

° 2 ~ 4 !I '0 _'." I "" ,

PL 7. Plane-table map showing the eastenl tip of the flagstone "thumb" 00 B~. Control: 598 cod shots. The dashed rectangle outlines the uea covered by PL 8

M ...... R~J-s:~~~ :v~.ta.-rm--