ILLUSTRATIONS 



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HoBBS : Page 



Figure 4 — Illustrations from the Norwegian coast 128 



5— Effect of frost work 129 



6 — Subdivision of the Norwegian cost region 130 



7— Kjerulfs map of the fracture system of Norway 132 



8 — Small relief unit determined by individual and consecutive 



joints 133 



9 — Embrasure-like notching of the coastline of west Greenland. 134 

 10 — Normal drainage network above homogeneous rock devoid of 



structure planes 134 



11 — Illustration of structural control of network 134 



12 — Rain-sculpturing controlled by joints 135 



13— Drainage map of the Redfield Quadrangle, South Dakota. . . 136 



14 — Botoka gorge of the Zambesi River 137 



15 — Sagging of beds of thin, flaggy limestone over joints 138 



16 — Map of the vicinity of the Moldefjord in western Norway. . 139 



17 — Map of the vicinity of Bergen, Norway 140 



18 — Schematic representation of the merging of two relief pat- 

 terns 141 



19— Fractured relief patterns locally obscured by dominance of 



fold structures 142 



20— Schematic diagram indicating the composite expression of a 



lineament 143 



21 — Map of the Abisko Canyon in northern Lapland 145 



22— Sand cones aligned along a fissure. 146 



23— Fracture patterns 1 47 



24 — Drainage map of the area about Rockland, in northern Mich- 

 igan 149 



25— Drainage map of a part of the district of Nipissing 150 



26 — Map showing oriented drainage of the French River district, 



Ontario 151 



27 — Patterned drainage of the Shepaug Valley, Connecticut 153 



28— Map of the Tehachapi Valley 154 



29 — Outline map of the fracture system of the Pomperaug Valley, 



Connecticut 156 



30 - Schematic representation of the relations of the disorderly 

 to the regularly patterned fracture fields of central North 



America 157 



31 — Oriented drainage network of the vicinity of Charny, in 



France 158 



32 — Fault system in the Silurian basin of central Bohemia 159 



33 — View of the Pordoi-Gebirge (Sella group) in the Dolomites. 160 



34 — Drainage network of the Dolomites 161 



35 — Oriented drainage of the Idrea river 162 



36 — Oriented drainage and structure lines of east central Africa. . 163 

 37 — Diagram illustrating the progressive landward shifting of 

 strand lines with uplift due to excessive depression on the 



ocean floor 164 



38— Slope of the eastern twin of Orenaug Hill 168 



39 — Effect of faults in displacing a basalt flow 169 



40— Fault blocks represented by outcrops of the upper basalt 



flow in the Pomeraug Valley, Connecticut 170 



