SCIENTIFIC SUMMARY. 
437 
Name 
Sub-divisions 
Approximate 
thickness 
Supposed Geo- 
logical age 
Remarks 
1. Alluvial, & c. 
— 
Unknown 
Recent and 
post-tertiary 
, Upper . . . 
5,000 
Pliocene 
Apparently re- 
presentative of 
the Sevaliks 
2. Manchhar . 
Lower . . . 
3,000to 5,000 
Lower Plio- 
proper 
cene or Up- 
— 
V * 
per Miocene 
3. Gaj .... 
l Upper . . . 
1,000 to 1,500 
4, 000 to 6,000 
Miocene 
Lower Mio- 
— 
4. Nari . . . 
cene 
(Lower . . . 
100 to 1,500 
Upper Eocene 
— 
/Upper . . . 
500 to 3,000 
Eocene 
Nimmulitic 5 
5. Khirthar. . 
(Lower . . . 
10,000 (?) 
Eocene 
Limestone 
Base not de- 
termined 
6. Ranikot . . 
— 
2,000 
Lower Eocene 

7. Traps . . . 
— 
40 to 90 
Upper Creta- 
Representative 
ceous 
of Deccan and 
Malwa Trap 
' Cardita Beau- 
\ 
monti beds. . 
350 to 450 

8. Cretaceous . 
■ Sandstones . 
700 
f- Cretaceous 

Hippuritic 
, Limestone . 
320 
) 
Base not ex- 
posed 
The most interesting point in this investigation is the asserted discovery of 
Cretaceous rocks in the hills of Western Sind. The lowest bed, the Hip- 
puritic limestone, has only been found in one spot, and there the outcrop is 
not more than half a mile in length. The only recognizable fossil found was 
a Hippurite. This limestone is believed to be identical with the Cretaceous 
limestone which occupies a large area in Persia, and has been traced at in- 
tervals from south-east of Karman to near Teheran. If so, this is the first 
recognition of the formation in India except in the Himalayas. The sand- 
stones above the limestone are dark, often calcareous, and not very fossiliferous. 
Towards the top they contain oysters and a few apparently reptilian bones. 
Above these are olive clays, shales, and sandstones, containing a peculiar 
globose Cardita ( C. JBeaumonti ), two or three species of Nautilus, and corals. 
The thin bed of trap has been traced for about 22 miles, always above 
the olive clays and beneath the lowest Tertiary beds ; the author regards it 
as undoubtedly identical with the trap of Malwa and Guzerat. The Ranikot 
group in its lower portion contains only imperfect plant remains ; but 
the limestones intercalated in its upper part abound in Mollusca, Echino- 
dermata, and Foraminifera. Many of the fossils pass up into the over- 
lying Khirthar beds, including Nummulites Leymeinei, the only abundant 
nummulite here. A few species show Cretaceous affinities, especially a 
iSalenia and some Nautili. The Khirthar group is more widely distributed, 
and where best developed is the most conspicuous formation in the province, 
