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amphibolite andesite Back azimuth barrio in municipal Bayamon breccia bronze tablet marked bronze triangulation tablet cemented a bronze cent center of top chalcopyrite chlorite coast copper bolt corundum country rock COUNTY Creek crystals department of Arecibo department of Bayamon department of Ponce deposits description and position diameter distance dunite emery feet east feet north feet south feet west feldspar fissures galena gneiss gold ground Gulch Latitude 40 lode Longitude Longitude 74 marble post marked U. S. Geological masses Meters Milepost miles south mineral mines municipal district northeast occurs peridotite Population post 48 post-office pyrite quartz Red Mountain Reference marks rhodonite rhombohedron rhyolite ridge road crossing San Juan sandstone post sapphires schists sericite set 30 inches shaft Silver Lake Silverton solid rock southeast southwest sphalerite Station mark stone post summit surface Survey tablet marked U. S. tetrahedrite tion Township tunnel U. S. Geological Survey—Pennsylvania vein
Page 159 - A sandstone post 34 by 7 by 7 inches, sunk 33 inches in the ground in the center of top of which is cemented a bronze triangulation tablet marked "US Geological Survey — Pennsylvania.
Page 88 - A marble post 36 by 6 by 6 inches, set 32 inches in the ground, in the center of top of which is countersunk and cemented a bronze triangulation tablet. (Latitude, 40° 21
Page 103 - A stone post 42 by 10 by 10 inches set flush with surface of ground, in the center of top of which is cemented a bronze tablet marked " IT. S. Geological Survey — Pennsylvania." [Latitude 39
Page 237 - Bulletins, and Water-Supply Papers treat of a variety of subjects, and the total number issued is large. They have therefore been classified into the following series: A, Economic geology; B, Descriptive geology; C, Systematic geology and paleontology; D, Petrography and mineralogy; E, Chemistry and physics; F, Geography; G, Miscellaneous; H, Forestry; I, Irrigation; J, Water storage; K, Pumping water; L, Quality of water; M, General hydrographic investigations; N, Water power; O, Underground waters;...
Page 16 - ... held in solution in the molten mass of the peridotite when it was intruded into the country rock, and that it separated out among the first minerals as this mass began to cool.
Page 138 - Station mark: A sandstone post 42 by 8 by 8 inches, set 30 inches in the ground, in the center of the top of which is cemented a bronze tablet marked " US Geological Survey — Pennsylvania.
Page 51 - produced by a succession of compressive stresses applied in different directions, chiefly from east to west and from north to south."2 In accounting for the fissures of the Telluride quadrangle, Purington3 arrived at somewhat similar conclusions.
Page 49 - RAY, ON LINE BETWEEN FULTON AND BEDFORD COUNTIES. On Ray's mountain, about 5 miles north of Pennsylvania-Maryland State line, and 2 miles west of Anaranth, Pa., on high knob in cleared field. Station mark: A stone post, 42 by 8 by 8 inches, set flush with surface of ground, in the center of top of which is cemented a bronze tablet marked "US Geological Survey — Pennsylvania.