132 G. D. OSBORNE. 



Section No. VII. Miles. 



Distance traced on the base of the Bolwarra Congte. ... 1075 



Present horizontal length... ... ... ... ... 10*50 



Crustal shortening... ... 0*25 



Total length of the Bolwarra Conglomerate ... ... 77 96 



Total present horizontal extent ... ... ... ... 70*50 



Total Crustal shortening... ... 7*46 



(ii) The Height of the Folded Area. 



The amount of the vertical bulging was measured for 

 each division of the section and the values when reduced 

 to average vertical heights for the respective divisions, 

 resulted as follows: 





Average Height 

 in Miles. 





Average Height 

 in Miles. 



No. I Section 



... 2-505 



No. V Section 



... 1-914 



„ II ,, 



... -440 



„ VI „ 



... -825 



,, HI „ 



... 1-611 



„ VII „ 



... -532 



„ iv „ 



... 1-157 







From these figures it would appear that the general 

 average elevation of the folded tract over the whole section 

 was originally of the order of 1*3 miles or 6800 feet. 



(iii) Depth of the Deformed Earth Block* 



From the results of (i) and (ii), with the employment of 

 the formula given in Part I, the depth, for each ten-mile 

 strip of the eartli zone which was involved in the diastro- 

 phism has been calculated. The values are given here: 







Depth 

 in Miles. 





Depth 

 in Miles. 



No. I 



Section . . . 



... 41 



No. V Section 



... 10 



„ II 



5> 



... 11 



„ VI „ 



... 6-5 



„ III 



,, 



.. 12 



„ VII „ 



... 21 



„ iv 



») 



... 6 







