4 Dr. H. Preiswerk—Ouil Region of the Northern Punjab. 
stretches in a straight line from the Murree Mountains in the W.S.W. 
direction to the Margala Pass. Wynne calls the range the Margala 
Hills. They are the first range of the Hindukush. The Hindukush 
and the mountain ranges lying in front of it are composed of Archean, 
Paleozoic, and Mesozoic formations. In the more southern ranges 
the younger formations predominate. In the most southerly 
range, the Margala Hills, we find Hocene Nummulitic limestone, 
which by its capacity for resistance forms a border range rising very 
N. 
SIDS O°010 Lines along which the, Upper Numulitic ° 
Is exposed 
eeeee Outcrops of Oiland Bitumen Suey 
on the former < 2. Zen R Salagen 
ro) Main Oil-Springs Peshawar Jng Pe? : 
Railways Attok /TARGALA juste Murree 
.° @Tre 
2 pal a Phar QOL Rae? RayraHOrar 
ohat dsnobx ATAMIANE Oe «ss : oe 
Oy AR ES an <p élpindi 
Domeli 6 & 
403 a AUN Goi Jhelum 
3 Sy : OJABA ak Boies Sots 
: BAN“ al)isa [keh Sie “Salt Min Lala Mus 
: = On 00000508 Kewra « ne g 
s Alagad ¢\\ Manwali 
eS £ y Wazirabad 
: ve 
2 
8 oy) Amritsa 
Sie Py 
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too/Miles 
Fig. 
suddenly out of the plain. The Eocene is not everywhere in its 
lower parts developed as Nummulitic limestone. Thus we find in 
the Trans-Indus district Hocene clays with gypsum and enormous 
masses of rock salt, below the Nummulitic limestones.! The 
Nummulitic limestones are partially bituminous, especially in their 
uppermost beds, which often consist of nodular limestones inter- 
bedded with clay. There, too, we find oil-shows. 
1 A. B. Wynne, Records of the Geol. Surv. of India, vol. x, p. 116. 
