Biographical Notice of Charles a Ashburner
Biographical Notice of Charles a Ashburner
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C. White in the western counties, Ash- burner instinctively felt that his success would depend on a good topo- graphical map as the first step of the survey ; and he made one of the best, contouring it with the eye of an artist who knew the geo- logical significance of every feature of every curve. When a model in relief, on an equal vertical and horizontal scale, was made from this map, and the colored belts of the outcrops were laid upon it, no more perfect exhibition of the geology of an ext...ensive area could be imagined. But hisstudy of the underground by surface-sections and well-borings was quite as excellent, and quite as well expressed to view. The generalizations which he deduced from it bore the most important fruit, fixed the limits of the oil, and placed the calcula- tion of boring-depth in that district on a sure scientific basis, one of his most striking discoveries being the rapid increase in thickness southeastward of formation No. X. , from 250 feet to 750 feet, which explained the failure of many borings to reach the deeper oil-horizon in Elk and Cameron counties.
What to read after Biographical Notice of Charles a Ashburner?
You can find similar books in the "Read Also" column, or choose other free books by Lesley, J. P. (J. Peter), 1819-1903 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
C. White in the western counties, Ash- burner instinctively felt that his success would depend on a good topo- graphical map as the first step of the survey ; and he made one of the best, contouring it with the eye of an artist who knew the geo- logical significance of every feature of every curve. When a model in relief, on an equal vertical and horizontal scale, was made from this map, and the colored belts of the outcrops were laid upon it, no more perfect exhibition of the geology of an ext...ensive area could be imagined. But hisstudy of the underground by surface-sections and well-borings was quite as excellent, and quite as well expressed to view. The generalizations which he deduced from it bore the most important fruit, fixed the limits of the oil, and placed the calcula- tion of boring-depth in that district on a sure scientific basis, one of his most striking discoveries being the rapid increase in thickness southeastward of formation No. X. , from 250 feet to 750 feet, which explained the failure of many borings to reach the deeper oil-horizon in Elk and Cameron counties.
What to read after Biographical Notice of Charles a Ashburner?
You can find similar books in the "Read Also" column, or choose other free books by Lesley, J. P. (J. Peter), 1819-1903 to read onlineMoreLess
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