. Memoirs of the Geological Survey of India. t close identity with greatly more distant areas should notbe anticipated ; particularly when all the regions capable of comparisonare situated along the margin of an extended continental region ofdisturbances, some of which may have originated at very early periods. ECONOMIC RESOURCES. The valuable mineral productions of this region are almost exclusivelylimited to the salt of Kalabagh and the Ltin nala, the alum of Kala-bao«h and Chichali pass, the coal or lignite collected in small quan-tities at times from the Jurassic beds of the Kalabagh hills
. Memoirs of the Geological Survey of India. t close identity with greatly more distant areas should notbe anticipated ; particularly when all the regions capable of comparisonare situated along the margin of an extended continental region ofdisturbances, some of which may have originated at very early periods. ECONOMIC RESOURCES. The valuable mineral productions of this region are almost exclusivelylimited to the salt of Kalabagh and the Ltin nala, the alum of Kala-bao«h and Chichali pass, the coal or lignite collected in small quan-tities at times from the Jurassic beds of the Kalabagh hills, and the goldwashed from the Indus gravel. The salt and its sources have already been described in the SaltRange Memoir (Mem. Geol. Surv. India, Vol. XIV, page 274) and in the 1 Ball, on the country of the Luni Pathans : Records Geol. Surv. India, Vol. VII, p. 145. 2 Blanford, Geology of Sind: Records, Vol. IX, p. 8: Manual Vol. II, chap. XIX, andPart 1 of the present Vol. of the Memoirs. ( 302 ) LOGICAL SURVEY OF INDI Mftnoire Vol. XVII,. SHEKH BUDIN HILLS. BHATTANI HILLS. 93 foregoing pages. It all belongs to the same horizon as that of the SaltRange. The gypsum of Kalabagh and the Khasor range is not as yet utilisedin this country. It does not appear to be in any way connected withthat of the Kohat district; and how far it may be representative ineither of these regions of that occurring to the west in Afghanistan, itis at present impossible to The alum is manufactured from the pyritous shales of the Jurassicand eocene formations. This industry seems to have greatly fallen Chichali, when the place was visited last season, only one batti (kiln)was at work, and no alum was being made at Kalabagh. Dr. Flemingfully described the manufacture in his paper to the Asiatic Society,Bengal, July 1849, page 685, as follows:— The alum is prepared from a black, highly bituminous shale called Rol, con-taining a quantity of iron pyrites, and which is brought from Cbita, abo
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