LIST 01 ILLUSTRATIONS 



ric. 



43. Section of inclined strata (as in Fig. 49), showing that thry 



form part of a large curve .... 



44. Section of strata curved in an arch or Anticline . >47 



45. Section of strata curved in a trough . i .; 



46. Anticlines forming valleys ; synclincs forming hills i.j8 



47. Curved limestone, Draught' m. near Skipton 



48. Shales contorted by a landslip .... 



49. Section of what at the surface might be mistaken for a con- 



tinuous highly inclined seri( -s of strata, shown to con 

 of numerous anticlinal and synclinal folds. Gneissose 

 rocks, Loch Quoich, Inverness-shire . . . '5' 



50. Reflexed contortions or isoclinal folds . . . '52 



51. Section of the grand inversions of strata m tl 



Mountain, Eastern Alps . . . . . 153 



52. Cleavage of curved strata, coinciding with the stratification, 



and at a right angle to it . . . . . 153 



53. Deceptive appearance of unconformability due to van 



in the effects of cleavage upon different materials. West 

 coast of Islay ....... 



54. Section of a portion of the earth's crust broken by two dis- 



locations whereby three different masses of stratified 

 rock have been brought into juxtaposition, and with two 

 masses of intrusive igneous rock, which have risen alon^ 

 the lines of fracture . . . . . . 159 



55. Section of a dyke, rising through a small fault and sending 



out a vein and an intrusive sheet or l>ed, into the sur- 

 rounding shales and iron stones . . . . .161 



56. Section of intrusive sheet or sill, underlying and overlying 



strata, and connected with a dyke or pipe . . .162 



57. Upper surface of an intrusive igneous sheet or sill with over- 



lying shale ......... 162 



58. Basaltic veins traversing Jurassic rocks, Ardnamurchan, 



Argyllshire 163 



59. Outline of a Volcanic Neck ...... 165 



60. Ground-plan of the structure of the Neck shown in Fig. 59 . 165 



61. Section through the same Neck as in Figs. 59 and 60 . 166 



62. Ground-plan of Granite boss with ring of Contact-Meta- 



morphism ......... 167 



