Charles Surface

Definition and stakes

George St. Clair,  Buried Cities and Bible Countries

“ The Hills and Valleys.—Sir Charles Warren was the first to point out the necessity of ascertaining the depth of the rock below the present surface, in as many places as possible, and of referring all the measurements to one fixed datum, the level of the sea. In the study of the ancient topography the original appearance of the ground is the first consideration, for although a certain amount of soil may always have existed, still the ancient surface must have conformed far more closely to that of the rock than does the present. ”
Source: Gutenberg

Portrait of Sir Charles Lyell Sir Charles Lyell,  Principles of Geology

“ If, for example, marine strata, about the age of our chalk and greensand, have been lifted up in Europe to an extreme height of more than eleven thousand feet, and a mean elevation of some hundreds, we may conclude that certain parts of the surface, which existed when those strata were deposited, have sunk to an extreme depth of more than eleven thousand feet below their original level, and to a mean depth of more than a few hundreds. ”
Source: Gutenberg

Charles Grenfell Nicolay,  Handbook of Western Australia (1880)

“ As the horizontal contours of any portion of the earth's surface must depend on the vertical, or, in other words, the various features which are marked on the map—the coast line, plains, rivers, vallies, lakes, hills, mountains, &c., being consequent on the different elevations of the various portions of the surface above the level of the sea ”
Source: Wikisource

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