peneplain
/pee-nuh-pleyn, pee-nuh-pleyn/US // ˈpi nəˌpleɪn, ˌpi nəˈpleɪn //UK // (ˈpiːnɪˌpleɪn, ˌpiːnɪˈpleɪn) //
笔者,笔者认为
Definitions
n.名词 noun
- 1
Geology.
- : an area reduced almost to a plain by erosion.
Examples
The bottoms of the broad depressions represent the Shenandoah peneplain, which is sharply trenched by the modern river channels.
This peneplain was later upraised into a plateau and its downward inclination towards the east increased.
The suggestion has been offered that the northern portion of the Coast Range is a dissected peneplain.
In other words, the western slope is a tilted peneplain, bearing on its surface remnants of older uplands.
Immense regional intrusions, the cores of once lofty mountain ranges, are found upon the Laurentian peneplain.
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