90 
Records of the Geological Survey of India. 
[vol. v. 
These are not regularly interstratified ; some of the divisions are of local occurrence, 
No. 2 being only found on the flank of the Gaira hills, and a few other places, while No. 4 
is also deficient in places. The thickness given is approximate only. 
The nummulitic group, No. 3, consists of pale, yellow, and white argillaceous limestones 
with some sandy beds and shaly marls. The massive and compact nummulitic limestones 
of Sind do not appear to extend to the westward. 
The argillaceous group, No. 1, is the most important of all in Kackli, and it contains 
the greatest number and variety of fossils. It perhaps represents the clays and limestone of 
Kattiawar, and it may be the equivalent of the gravels and conglomerates of Eatanprir 
near Bharoch. But it is far from clear that this is the case. 
West of Kaehli the delta of the Indus makes a great break in the belt of tertiary 
deposits bordering the coast, and when the rocks again emerge from beneath the alluvium in 
Sind, the border groups of India have been left behind, and the great nummulitic limestone 
tract entered, which extends from the Himalayas to the Mediterranean. In Sind itself no 
rocks older than the Tertiaries are known to occur, but to the west in Kelat, mesozoic and 
paheozoic strata have been found by Dr. Cook, which are probably a continuation of the beds 
known to exist in the Salt Eange. 
The following general section of the beds in Sind is given by Captain Vicary 
1. —Conglomerate. 
2. —Clays and sandstone. 
3. —Upper bone bed. 
4. —Sandstone—fossils rare. 
5. —Lower bone bed. 
6. —Coarse, arenaceo-calcareous rock, with Cytlierea cxoleta ? and C. exarata, 
Spatangi, no nummulitcs. 
7. —Pale arenaceous limestone with Hipponices, Nmnmulites and CharoidecB. 
8. —Nummulitic limestone of the Hala range. 
9. —Black slates—thickness unknown. 
Probably a thorough examination of the country would produce some important modifi¬ 
cations in this list. What the black slates No. 9 may be it is difficult to say from Vicary’s 
description, as he does not refer to them further, and it is doubtful if they occur within the 
limit of Sind. 
Beneath the limestone of the Hala range and of Kotru (Kotree), which appear to be 
identical, there is a great thickness of variegated sands and clays containing leaves of plants, 
and in one or two places small lenticular beds of lignite. These beds undoubtedly represent 
the somewhat similar formation below tho nummulitic marls and limestone of Kachk. A 
rough classification of the Sind rocks, so far as they are known, may be attempted thus:— 
Descending section. 
1. —Conglomerates, clays and sandstone with fossil bones; (Nos. 1 to 5 of Vicary). 
These are tho equivalents of tho Sivalik and Perim beds, and are known to 
be of Miocene ago. 
2. —Limestone, more or less pure, passing into sandstone and of variable character 
(6, 7, and 8 of Vicary.) Towards the base are massive beds of white lime¬ 
stone of great thickness abounding in Alveolina, a small spheroidal fora- 
minifer. It is highly probable that further examination will show the 
necessity of sub-dividing this group. 
3. —Variegated sands and gypseous clays, with remains of plants. 
