280 
Records of the Geological Survey of India. 
[voL. XI. 
then greenish marls, then sandstones, and finally, again limestones. The Ceratites 
described by De Koninok occur throughout all this series, which in age very pro¬ 
bably represents the Bunter Sandstein of Europe, although Myophorias resem¬ 
bling a Muschelkalk species occur already in the uppermost limestones. Above 
these lie variegated beds, partly sandstone, partly marls, with many fragments of 
coal and extremely few ill-preserved mollusks. Not till the middle Jurassic pe¬ 
riod do beds appear again, which are determinable according to their age. These 
are limestones with but few fossils, over which follow again variegated beds with 
intercalated alum shales. Then follow oolites, and finally, distinct Kelloway beds. 
These are overlaid by black .shales resembling the Spiti shales, and with which 
the Jurassic sei’ies concludes. Above them lie green sands with neocomian fossils. 
These are succeeded by beds of very varied constitution, now resembling the ores 
of the Kressenberg, then sandstones, then again yellow marls, rich in fossils, which 
perhaps represent the uppermost chalk, but whose exact age can only be deter¬ 
mined with certainty after careful working out of the fossils. This is the succes¬ 
sion of beds in the western pai’t of the Salt Range; in the eastern part follow, 
above Wynne’s magnesian sandstone, red slaty sandstones, with numerous salt 
pseudomorphs, probably triassic in age, and above them greyish green sandstones 
which may well belong to the cretaceous period. 
Southward of the S-alt Range a complete series of the secondary formations is 
nowhere to be found, but only individual members of the same wliich appear 
sporadically. The marine deposits of the age of the trias especially have dis¬ 
appeared almost entirely ; only from Burma has Mr. Theobald brought some spe¬ 
cimens of Halobia cf. lommeli, which lead me to conclude the existence of marine 
triassic beds. Their geographical distribution can only be made out with difii- 
culty on Theobald’s ^ map. 
The marine beds of the Juras.sic system have a wider extension. In my 
work on the Kachh Cephalopoda I already drew attention to the existence 
in various places under the sands of the Rajputana desert of Jurassic beds 
■which have in some cases already yielded fossils. Nothing is known of the suc¬ 
cession of beds, or their occurrence elsewhere. The rocks are sandstone and shales; 
the fossils chiefly indicate a relationship to the Katrol sandstone. To indicate the 
distribution of the Jurassics in this region, I have in my little map placed some 
Jurassic patches at random within the limits of the Rajputana desert. 
These Jurassic beds connect those of the Salt Range with the Kachh beds. 
Unfortunately the lowest beds of the Kachh Jura are not exposed, as the crystal¬ 
line rocks only crop up to the northward of the Runn, while the lowest beds of 
the Jura first appear from under the Runn, some 10 to 15 miles to the southward. 
These lowest beds form the Patchum group.® They are earthy sandstones of yel¬ 
lowish or yellowish grey colour, containing numerous gasteropods and bivalves. 
1 Theobald : Mem. Geol. Survey of India, X. 
2 Waagen : Jurassic Fauna of ICachh; lutroductiou.—Palseontologia Indica. 
