Records of the Geological Survey of India, Volume 51

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Government of India, 1921 - Earthquakes
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Includes the "Annual report of the Geological Survey of India," 1867-

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Page 18 - by local enrichment, largely by the leaching out of silica, and to a less extent by the introduction of iron oxide.
Page 13 - to occur usually at or near the tops of hills, the most important being the range running from about 3 miles south-west of Gua to the Kolhan-Keonjhar boundary east of Naogaon,
Page 25 - Possible occurrence of Petroleum in Jammu Province; Preliminary Note on the Nar-Budhan Dome of Kotli Tehsil in the Punch Valley.
Page 18 - tentatively to the base of the Cuddapah system. Of the ferruginous rocks the commonest type consists of interbanded layers in varying proportions of iron oxide, silica and combinations of the two. The silica is sometimes crystalline and sometimes cherty. The chert, however, is not truly amorphous, but consists of fine interlocking quartz grains. At times the silica is red and
Page 13 - formed the top of this range of hills almost without a break. Parallel to this range is another similar line of hills running from the Duargui stream, three miles east of Bada, to the Karo river south-east of Ghatkuri, a distance of about 7 miles. Here the
Page 13 - was found at or near the top of the range, but it appears to be confined to patches, which, however, are of considerable importance. To the west of these ranges again are more irregular patches of ore occupying the tops of hills.
Page 14 - on the deposits, but enough is known to justify the belief that the quantities available will run into hundreds—possibly into thousands—of millions of tons. In most cases, the chief obstacle to development
Page 14 - of kaolin ; it is also said to be very free from iron and alkalis. Laboratory tests indicated that the plasticity, refractoriness and colour of the levigated material were good. The white bed is said to run for a distance of some 40 miles,
Page 325 - a study of Indian Tertiary geology undoubtedly reveals the presence of a vastly developed intercalary stage, the Laki, intervening between the equivalents of the Cuisian and Lutetian, and corresponding with neither. It is equivalent to the Lybian stage of Egypt. In the
Page 24 - Notes on the Revision of the Survey in parts of the Shimoga, Honnali, Shikarpur, Sagar, Nagar and Tirthahalli Taluks.

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