1915 - 16 .] 
The. Origin of Oil-Shale. 
49 
with kerogen and coal, we find the kerogen typical of the lower part, the 
coal of the upper, with a transition period characterised by both. 
FEET 
9000 
3.000 _ 
5,000 _ 
3,000 
2 , 000 . 
1 , 000 . 
Red Sandstones 
DALKEITH 
COALFIELD 
Ros/in Sandstone 
COAL 
COALS 
SOUTH PARROT COAL 
EDGE COALS 
COAL 
COAL 
RAEBURN SHALE 
MUNGLE « 
TWOFOOT COAL 
GREY SHALE 
HOUSTON COAL 
FELLS SHALE 
Broxburn Mar/s 
BROXBURN SHALE 
champfleurie shale 
Binny Sandstone 
DUNNET SHALE 
Dun net Sandstone 
CAMPS SHALE 
PUMPHERSTON SHALES 
DALMAHOY SHALE 
Hai/es Sandstone 
War die States 
Granton Sandstone 
do/canic Group 
COAL 
MEASURES 
MILLSTONE 
GRIT 
CARD QNIFJ&ILOTTS 
LIMESTONE 
SERIES 
UPPER 
OIL- SHALE 
GROUP 
LOWER 
OIL- SHALE 
GROUP 
CEMENT ST ONE 
GROUP 
UPPER OLD RED SANDSTONE 
Fig. 1 . — Vertical Section of the Carboniferous Formation of the Lothians. 
(From H.M. Geological Survey memoir.) 
VOL. XXXVI. 
4 
