Records of the Geological Survey of India, Volume 2, Parts 1-4government of India., 1869 - Geology 1867- includes the "Annual report of the Geological survey of India". |
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alluvial alluvium appear banks beds Bengal Blanford breccia calcareous Calcutta Camorta Car-Nicobar Chanda clay cloth lettered coal coarse coast conglomerate containing copper coral Cretaceous crystalline denudation deposits district east eastern elevation examination extent feet forest formation fossil-wood fossils fragments gabbro Gastropoda Gawilghur Geological Survey gneiss gold GOVERNMENT gravel Gurhwal hills iron Jurassic Kondul Kuddapah Kumaon Kurnool Kutch laterite limestones Little Nicobar London lower Madras maps marine metamorphic miles mineral mines Nancowry neighbourhood Nerbudda Nicobar islands northern nummulitic observations occur Plates Poorna portion present probably province Punjab Puttí quartzites Rajgir range reefs Report Rink river Runn sand sandstone sandy schists seen serpentine and gabbro shales side slates Society soil southern islands species specimen strata streams submetamorphic surface Survey of India tecta tertiary thickness trace trap upper vertebral Vindhyan W. T. Blanford western
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Page 50 - Records' will be issued in the months of February, May, August, and November in each year. Each Number will contain the additions to Library and Donations to Museum up to the first of the next preceding month, — that is, to the end of March, June, September, and December.
Page 23 - Memoirs read before the Boston Society of Natural History. Being a new series of the Boston Journal of Natural History.
Page 13 - ... that it would not pay them to work in the metamorphics. " The greatest amount found on one day was 2-2 grains, but the daily averages given above should not be taken as indicative of the amount of gold to be found by a regular system of working, where the washers would of course be set at favourable spots, and would not have to spend a considerable portion of their time daily, as was the case of the men I employed, in making marches before they reached the scene of their labours.* " Various papers...
Page 11 - I fancied that I was able to connect the occurrence of gold in the streams with the existence of certain submetamorphic rocks (magnesian and mica schists, slates and quartzites) which were then for the first time met with in Manbhum. Being anxious to put this connexion to as rigid a test as circumstances 'would admit of, and wishing to define, if possible, the exact boundaries within which gold certainly exists and may be reasonably looked for, I, with some difficulty, persuaded two gold washers...
Page 11 - ... where gold mining had been, or was, at the time of his visits, carried on. He also quotes from a letter from Mr. Robinson, in which that gentleman states the results of his attempts to establish gold-mining under European superintendence. At Rohobe in Oodipur where operations were commenced and showed some prospect of being fairly remunerative, the climate proved so ' hot and unhealthy ' that it was found that no European could live there, and the works were given up. " Colonel Haughton says...
Page 13 - ... 16=qp 3 : 1. We may therefore conclude that the submetamorphics are between two and half and three times as productive of gold as the metamorphics, so that as the gold washers only find a subsistence from washing in the submetamorphic area, it is obvious that it would not pay them to work in the metamorphics. The greatest amount found on one day was 2'2 grains, but the daily averages given above should not be taken as indicative of the amount of gold to be found by a regular system of working...
Page 12 - ... gold certainly exists and may be reasonably looked for, I, with some difficulty persuaded two gold washers (man and wife) to accompany me during my examination of the southern portion of the district of Manbhum. They remained with me for upwards of three months, washing daily at such places as were pointed out. " One of the most interesting results is, that the existence of gold in the metamorphic as well as the sub-metamorphic rocks has been satisfactorily proved. This, from various reasons,...
Page 11 - Copper Company to investigate the gold resources of the country. He is said to have crushed a quantity of quartz and to have found traces of gold in it ; but his operations do not appear to have been sufficiently successful to encourage him to continue. In Chaibassa, I was shown a small nugget of gold in a quartz matrix. It was said to have been obtained in the Kappergudee Ghat, near Kalkapur, in Dholbhtim.
Page 13 - The dish when filled is placed in shallow water, and the operator working with his hands soon separates and throws aside all the coarser gravel and stones, while the agitation of the water serves to carry away all the mud and lighter portions. The dish is then balanced on the palm of the left hand and oscillated to and fro with the right; this serves to throw off the greater portion of the remaining gravel, and the process is completed by a circular motion, which is communicated to the water in the...
Page 14 - Stcehr, in his paper on Singhbhum, states that he found the average daily earning to be about 25 centimes (rather more than an anna and a half). The men I met with stated that they could earn about an anna a day and occasionally three or four annas. " The simplest idea of the process of hydraulic mining, which seems so nearly to approach to perfection in California, is not altogether unknown to the natives.