Outline for Preliminary Report on Mineral Claims 93 



The strike is "the line of intersection formed by the 

 dipping bed with the plane of the horizon, and is at right angles 

 to the line of dip". As the direction of dip changes, the strike 

 also changes, and therefore in highly folded rocks take numer- 

 ous dip and strike readings. Strike should not be confused 

 with outcrop which is due to erosion and is the irregular line 

 along which a dipping bed cuts the surface of the ground. The 



Vig. 3. Illustration of terminal curvature (creep or slumping) of fissure 

 vein with stringers. The vein is broken over at the. surface and the 

 outcrop shifted to lower level. 



Fig. 4. Illustration of terminal curvature of coal vein, giving false dip 

 of the vein at the surface. A. Talus slope. B. 'Coal "blossom". 



