white: relations between coal and petroleum 199 



along the border of the coal field, are also shown on the map. 

 The character of the folding of the valley regions and the fault- 

 ing to the eastward is shown in the folios of the Geologic Atlas 

 of the United States and in the State geological maps. 



SKETCH SHOWING COAL, OIL »-■> GAS FIELDS '"-"EASTERN UN ITED ST ATE5 p.y--. 



(compiled from maps by M.R.CAMPBELL AND DAVID T. DAY) WITH GENERALIZED ■ 



REPRESENTATION OF THE EFFECTS OF REGIONAL DYNAMIC ALTERATION OF THE 

 ORGANIC DEPOSITS AS SHOWN BY THE FIXED CARBON IN THE PALEOZOIC COALS 

 AND THE GRAVITIES OF THE OILS. 



t 



/ 



'■\\ 



'■ 'If 





I . f ■ ■ — ;-..5!i„ '>/^W,- fe.-l/- 



le:g end. 



Outline of coal fields 

 Productive oil pools- 

 Produchive gas pools 



Lines shov/ing fixed 

 carbon in pure coal 



Gravit-y of oil 

 ( Baume' scale). 



Principal faults in 

 or adjacent to the 

 coal fields. 



Fig. 1. Regional alteration of coals and petroleums in Eastern United States. 



