WEST VIRGINIA GEOLOGICAL SURVEY. 35 



different points. From these sections the following table is 

 compiled showing the approximate distance in feet of the most 

 important formations above and below the Pittsburgh Coal, at 

 points where such information is available, and the table was 

 used in making the structure map as well as in cropping the 

 coals on Map II. In this table some of the lower oil and gas 

 sands are included, but no formations below the Big Lime 

 were used in making the structure map. The intervals to 

 these latter formations are given for the convenience of the 

 reader when studying the oil and gas well records of Chap- 

 ter X. 



The sections from which the following table was made, 

 as well as many other sections, are published in Chapter IV 

 and should be carefully studied by those who desire to make 

 local investigations of any coal or other formation, since they 

 contain much detailed information that can not be shown in 

 the table of intervals or on Map II. In order to find the 

 approximate elevation of any coal, its interval from the Pitts- 

 burgh should first be obtained from the following table or 

 from the local section given for the nearest point. With the 

 structure contours as a guide, the coal should then be easily 

 found : 



