The mountains of Eastern Australia

Abstract

Abstract The earth forms under consideration evidence a uniformity of design. In the main they consist of high plains which, on the one hand, are surmounted by residuals of varying dimensions, and on the other hand, are diversified by broad, shallow valleys, separated by swelling ridges rising to accordant heights. In areas of softer rock formations the residuals are insignificant in size, whereas, in those of hard, to very hard formations, such as siliceous granite or rhydite lavas, the residuals present the appearance of other plateaus rising above the general upland level, and equalling, or even exceeding, the latter in area. A magnificent example is to be found in the plateau extending from Guy Fawkes to Ben Lomond and Guyra in New England at an average height of from 4,300 to 4,500 feet above sea level, and rising abruptly above the lower plateau of Armidale, which is only about 3,300 feet above the same datum.