The science of geology did not exist in the preindustrial world. Then earth mate

Question

The science of geology did not exist in the preindustrial world. Then earth mater were found by prospectors. Prospection continues today but is aided by the [_____] of geology. Prospection begins with the examination of products of weathering either in place or after transportation as detrital sediments (clay, silt. sand, gravel) or chemical sediments ([_____]).As these materials can be dug into with a pick and a shovel, the prospector tools are those and a pan used wash for heavy minerals when these are what is sort. https://youtube.be/Orhsj VH_LO8 https://www.youtube.com/watch?v=PxfcAhS8u0 The prospector in new territory relies on luck to find something, but, mostly, the [_______] looks for more of what has already been found by others in a region. The principle of prospection is to "look tor lion in lion country." The science of geology began with the thoughts of James Hutton (1726-1797) that he published beginning in 1788. Geology, due to Hutton, has as a principle that Earth is exceedingly [______] than historical lime. This was revolutionary as the received wisdom of the day was that Earth is no older than the 6000 years enumerated in Christian and Mosaic biblical texts. So, slow in its development, in spite of John Play fair's masterful illumination in his Illustrations of the Huttonian theory of the earth, 1802, geology as an accepted science can be dated to the founding of the Geological Society of London in 1807 with just 13 founder members. One of these, Henry Thomas De lessthanorequalto Beche, became the first working geologist appointed (with a salary) by the Board of Ordnance in 1832 to portray, on ordinance maps, rock strata; their related soils, their succession, and their faults and folds. By spring 1834, he was able to publish on four [_____] maps a geological map of the county of Devon, England. Mineral deposits produced by the weathering of bed rock The common minerals of igneous rock are eight minerals: quartz, orthoclase, plagioclase, muscovite, biotite amphibole, pyroxene, and olivine. These are silicates. At their heart, they are mostly composed of oxygen, [____] and aluminum that are so strongly bonded together that these elements are inaccessible for extraction by chemists. However, at Earth's surface, chemical weathering, in producing [______] turns the common silicate minerals of igneous rock, except for quartz, to clay and releases salts in solution (ions of Fe, Mg, Mn, Ca, Na and K). These salts accumulate as non-silicate sedimentary minerals containing Fc (hematite, limonite). Mg (dolomite), Mn (wad), Ca (limestone, gypsum, caliche), Na (common salt, natron), and K. (sylvite). Grains of quartz released by weathering accumulate after transportation as quartz sand. Clay after transportation accumulates as mud. Chemical weathering of igneous rock also releases minerals that are present and arc different from the eight igneous rock minerals (listed above) used for their classification. These are called accessory minerals. The accessory minerals are the first to crystallize in a cooling igneous magma. Usually they occur in small amounts of less than one percent in the rock by volume and as crystal grains too small to be noticed. Some, like quartz, are [________] minerals. T hat is, they are released unchanged by [_______] weathering. Igneous rock accessory minerals of high specific gravity accumulate as placer deposits of deposits of minerals: chromite (containing Cr) diamond (C), ilmentie rutile and sphane (Ti), magnetic (Fe), xenotime (Y), and zircon (Zr), Except for [______] as gems, these accessory minerals found no use preindustrial times but are prized today.

Explanation / Answer

a) prospector

b) science

c) ordinance

d) older

e) soil

f) salt

g) silicon

h) resistate ( are those material which resist chemical weathering)

i) chemical

j) diamond

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