Engineering GeologyJ. Wiley & sons, Incorporated, 1914 - 672 Seiten |
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acid angle beds Biotite bituminous breccia building stone Bull calcite carbonate cause cement cent channel Chapter character chiefly chlorite cleavage coal color crystal crystalline deposits depth developed dikes diorite dolomite drift engineer erosion fault feet feldspar fissures flow folds formation fracture gabbros Geological glacial glacier gneiss grains granite gravel gypsum hard horizontal hornblende igneous rocks important impurities iron joints Lake less lime limestone limonite marbles masses material matter megascopic metamorphic rocks mica miles mineral composition Mountain occur olivine outcrop oxide peridotites planes Plate porous porphyritic pyrite pyroxene quarry quartz quartzite regions River sand sandstones schists Section showing sediment sedimentary rocks shales silicates SiO2 slate slope soil soluble solution sometimes Specific gravity stream structure sulphides surface Surv Survey syenite temperature tests texture thickness U. S. Geol usually valley varieties vary veins vertical volcanic W. S. Paper wave weathering zone
Beliebte Passagen
Seite 253 - ... 1 inch deep on 1 square mile equals 0.0737 second-foot per year. 1 foot equals 0.3048 meter. 1 mile equals 1.60935 kilometers. 1 mile equals 5,280 feet. 1 acre equals 0.4047 hectare. 1 acre equals 43,560 square feet. 1 acre equals 209 feet square, nearly. 1 square mile equals 2.59 square kilometers. 1 cubic foot equals 0.0283 cubic meter. 1 cubic foot equals 7.48 gallons.
Seite 252 - is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assumption that the run-off is distributed uniformly both as regards time and area. "Run-off, depth in inches...
Seite 252 - Mar. 23, 1901). 1 second-foot equals 38.4 Colorado miner's inches. 1 second-foot equals 40 Arizona miner's inches. 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per minute; equals 646,272 gallons for one day.
Seite 572 - Solid or semi-solid native bitumens, solid or semisolid bitumens obtained by refining petroleum, or solid or semi-solid bitumens which are combinations of the bitumens mentioned with petroleums or derivatives thereof, which melt upon the application of heat and which consist of a mixture of hydrocarbons and their derivatives of complex structure, largely cyclic and bridge compounds.
Seite 534 - ... western type, moreover, gives up its volatile matter more easily at moderate and low temperatures than that of the other type. The volatile matter produced at medium and low temperatures is rich in higher hydrocarbons of the methane type, such as ethane and propane, which contain a larger portion of carbon than is present in methane. "These facts help to explain the difficulty of burning Pittsburg coal, for example, without smoke, the low efficiency usually obtained in burning high-volatile western...
Seite 339 - Suspended vegetable or animal matter liable to decomposition or to partial solution is much more objectionable, even in small amounts (10 to 20 parts per million), than are equal quantities of mineral matter. For these reasons water should be freed from suspended matter before being used for laundering, bleaching, wool scouring, paper making, dyeing, starch making, sugar making, brewing, distilling, and similar processes. In making the coarser...
Seite 449 - ... gneisses the injury seems to be controlled by the same factors as in the granites, but there comes in here the added factor of banding. Those which are made up of many bands would be damaged more severely than those in which the banding is slight. All the sandstones which were tested are fine grained and rather compact. All suffered some injury, though, in most cases, the cracking was along the lamination planes. In some cubes, however, transverse cracks were also developed.
Seite 583 - The number 20 was therefore adopted as a standard of excellence. In interpreting the results of this test a coefficient of wear below 8 is called low; from 8 to 13, medium; from 14 to 20, high; and above 20, very high.
Seite 449 - All the igneous stones and the gneiss at 850° C. suffered injury in varying degrees and in various ways. The coarse-grained granites were damaged the most by cracking very irregularly around the individual mineral constituents. Naturally, such cracking of the stone in a building might cause the walls to crumble. The cracking is due, possibly, to the coarseness of texture, and the differences in coefficiency of expansion of the various mineral constituents. Some minerals expand more than others and...
Seite 318 - Section of an artesian basin. A, porous stratum; B, C, impervious beds below and above A, acting as confining strata; F, height of water level in porous...