geographical cycle造句

• His theory explained that mountains and other landforms are shaped by the influence of a number of factors that are manifested in the geographical cycle.
• During the 1920s Penck, with Siegfried Passarge, Alfred Hettner and his father, was the foremost figure in a broad German opposition to the " geographical cycle " theory of William Morris Davis.
• It is the work of the famous geographer William Morris Davis who not only made important contributions to the establishment of discipline in his country, but revolutionized the field to develop geographical cycle theory which he proposed as a paradigm for geography in general, although in actually served as a paradigm for physical geography.
• An early popular geomorphic model was the " geographical cycle " or " cycle of erosion " model of broad-scale landscape evolution developed by William Morris Davis between 1884 and 1899 . It was an elaboration of the uniformitarianism theory that had first been proposed by James Hutton ( 1726 1797 ).
• Davis'most influential scientific contribution was the " geographical cycle ", first defined in his 1889 article, " The Rivers and Valleys of Pennsylvania ", Each stage has distinct landforms and other properties associated with them, which can occur along the length of a river's upper, middle, and lower course.