572 CHILI. 
After intersecting, they again enlarge, and at nearly the same rate as 
they before diminished. At this place one of the veins appears to in- 
tersect the other. 
These cases are examples from among many which the region pre- 
sents. 
Faults. —F aults at the intersection of granite veins by granite veins 
are of rarer occurrence than those in the line of veins of epidote ; there 
are also a few faults along cracks which are not distinctly epidotic. 
Faults may be found throughout the granite region wherever there 
are veins to be faulted. Along the shores under St. Anthony’s Hill, be- 
yond the Castle of the same name, is a good place for observing them. 
The same cliff below the lighthouse affords interesting examples of 
them. Sections along the road to Quillota, as it passes out of Valpa- 
raiso, are also good localities, and there are others on the elevation 
back of Valparaiso. At one place, in a vein two feet wide, there are 
four faults within a length of eighteen inches, as represented in figure 
10. In another similar vein there were five faults in the same dis- 
tance (figure 11). Figure 12 represents six faults in a distance of six 
feet, in a small vein, an inch wide, all of which are in the line of 
Fig. 10. Fig. 11. Fig. 12. Fig. 13. 
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minute epidotic seams. Figure 13 is another example of similar 
faults. Along the line of the faults there are some epidotic stains, with 
distinct veins in many places. The walls of the rock in these seams 
(or apparent lines of fracture,) are smooth, and the rock of the 
faulted granitic vein consists of white feldspar and quartz. 
In some cases the vein, besides being faulted, has its original direc- 
tion changed. Such has been the fact with the left part of figure 14, 
the singularity of which can scarcely be described. On the right of 
the same figure another remarkable fault is represented, which has 
taken place at the intersection of two granitic veins : the separation by 
fault is about a foot; and the parts are still connected uninterruptedly 
by a narrow feldspathic vein (m n) passing obliquely from one part to 
the other in the direction of one of the intersecting veins, and in such 
