Abstract
WITH reference to Sir Cyril Fox's interesting article under the above heading1, I wish to make certain comments. I think that nobody maintains that the Kohat-Potwar Saline Series is of post-Eocene age. As Prof. Sahni says2, his "fossil evidence is consistent with any geological age from the Lower Tertiary to the recent. But since on stratigraphical grounds the Saline Series cannot be younger than early Tertiary, the conclusion is that it is of Eocene age". I have shown3 that the latest marine beds of that region are of Upper Khirthar (Auversian) age; so there were apparently no marine waters to desiccate, in that region, after the Eocene.
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Nature, 155, 258 ( 1945 ).
Proc. Nat. Acad. Sci. Ind., 14, 86 ( 1944 ).
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Davies, L. M., C.R. Soc. Géol. France, 2, 22; 15, 294 (1938); Nature, 142, 296 (1938), etc. For diagram showing east-to-west succession see Quart. J. Geol. Soc. Lond., 99, 65 (1943), Fig. 1.
de Cizancourt, Mme., Mém. Soc. Géol. France, W.S., 17, Fasc. 1, Mém., 39, 14 (1938).
See palæogeographical diagrams, Proc. Sixth Pac. Sci. Congress (1939), 2, 489, 494, etc. ( 1940 ). The delta of the proto-Kurram river was shifted eastwards, as its contemporary deposits show, by the emergence of this ridge, and may have further tended to block the marine connexion. Wind-rounded sand-grains (found by Dr. R. M. Craig in collections from these deposits) indicate more local aridity than some suppose to have existed at that time.
Cox, L. R., Ann. Mag. Nat. Hist., ii, 1, 172 (1938).
Nature, 155, 267 (1945).
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DAVIES, L. Geology of the Punjab Salt Range. Nature 155, 580 (1945). https://doi.org/10.1038/155580a0
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DOI: https://doi.org/10.1038/155580a0
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