Records of the Geological Survey of IndiaGeological Survey of India, 1914 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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ancient moraines aturicus beds Burma Calcutta Carbonaceous Carbonaceous shale Carboniferous cept mineral oil Chaung Chikkim Chingchingmauri clay Coal cusp Deccan Trap deposits Deprat Dhauli Dissopsalis district Douvillé dyke eastern Yünnan Eocene Exploring License fauna feet fossils Fusulina genus Geol Geological Survey Gieumal granulated Hasdo horizon Hsien Hyænarctos ice cave Kharsa glacier Khirthar kieserite langbeinite later limestone Lissar nadi lower Lutetian Manganese Maung maxilla Messrs metres middle Carboniferous miles Minbu minerals ex Mining monazite moraines Nature of grant névé Nipchungkang glacier nummulites occur Oligocene over-deepening P. L. renewal Pakokku pegmatite Pegus Permian PLATE present Priabonian quartzite Ralphu rocks Salt Marl Sample sand sandstones seams seen September 1912 shales shows snout Sona glacier species specimens Spiti station Stoliczka stream surface Surv SURVEY OF INDIA Tertiary thick tooth tributary upper Uralian valley village zone
Popular passages
Page 24 - XXXIV, p. 31, of the pitchblende found (4 cwts.) has been obtained from a single pit, but small nodules have recently been found in another. The maximum weight of a nodule of pitchblende from the first pit is 36 Ibs. " The pitchblende occurs as rounded nodules distributed throughout certain basic segregations in the pegmatite, which are several feet in diameter. In these basic segregations the following minerals occur, but not always together : — white and yellow mica, triplite, ilmenite, tourmaline,...
Page 254 - In many beds the cut surface of the compact rock, as seen in the cores, is marked with numerous small, round, shallow pits, from one to two-tenths of an inch in diameter, apparently formed by the dissolving-out of some substance. These give the rock a worm-eaten aspect, which led the late Prof. Eaton to call similar beds, belonging to the same geological horizon in the State of...
Page 118 - Hin-chou loess basin in Shan-si. The fourth and present physiographic stage we named for North China the Fon-ho, from the river of that name, which, though older than the Fonho epoch, still flows through Shan-si among characteristic features of that stage. For South China, where the physiographic relations are somewhat different, we applied the name Yang-tzi' to what is very nearly or precisely the same time division. It is an epoch of very decided mountain growth in China; and if, as I believe,...
Page 195 - A Lower Cretaceous Fauna from the Himalayan Gieumal Sandstone, together with a description of a few fossils from the Chikkim Series.
Page 17 - The upper seam is valueless in the east, but ranges from 3J feet to nearly 10 feet in the west. The result of a considerable number of assays shows that neither seam is of good quality, the ash content ranging from 15-38 per cent, to 32-24 per cent, in the case of the lower seam and from 22-98 to 36-68 per cent, in the case of the upper. In the Khurasia...
Page 19 - SINGHANA (28°06' : 75 °54') was published in 1831. According to Heron, who visited the mines in 1913, the copper mines are in the upper part of the slate and schist zone lying below the quartzite on which KHETRI and BAGOR forts stand, and are almost continuous from Singhana to Babai for a distance of 15 miles. The pits that occur outside this belt appear to have been little more than prospecting shafts. The ore is copper pyrites with some iron pyrites and is in the form of stringers, layers and...
Page 24 - The pitchblende occurs in a pegmatite, which crops out on a hill known as Abraki Pahar lying due east of Banekhap and rising two hundred feet above the surrounding alluvium. The pegmatite has a maximum width of forty yards and is exposed above the alluvium for a distance of approximately three hundred and fifty yards in a direction E. 20° S. It is intrusive along the bedding of fairly coarse-grained muscovite schists dipping at between 30° and 50° N., masses of the schist being also caught up...
Page 254 - ... These give the rock a worm-eaten aspect, which led the late Prof. Eaton to call similar beds, belonging to the same geological horizon in the State of New York, vermicular lime-rock. In other beds the surface of the cores is marked from the removal, by solution, of thin-bladed crystals, which has given rise to what appear like small gashes or incisions in the compact rock. These are sometimes half an inch in length, and occasionally intersect each other at right angles.
Page 52 - XLI., pp. 221-239. 1914A.. — iNotes on the value of Nummulites as zone fossils, with a description of some Burmese species.
Page 24 - N., masses of the schist being also caught up in the body of the pegmatite. At the junction between the pegmatite, and the schists, the latter contain tourmaline crystals in large quantity. This pegmatite has been mined for many years as a source of mica ; before the mining for pitchblende commenced, the only indication of uranium on the surface consisted of small amounts of light yellow uranium ochre associated with triplite; but, as the pits were deepened, nodules of pure pitchblende were met with....