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单词	peneplain
释义	peneplain /ˈpiːnɪpleɪn / noun Geology A more or less level land surface produced by erosion over a long period, undisturbed by crustal movement.Here the sequence of processes and landforms which exists between the tectonic uplift of an area and its reduction to a peneplain or erosion surface close to base level is believed to have occurred many times in certain regions.... the Palaeozoic Urals were eroded down to a peneplain by the end of Jurassic time, with platform sediments covering most of the orogen. The south slope is generally planar except where incised by glacial or fluvial valleys and is a remnant peneplain of late Cretaceous-early Tertiary age, which is well developed in western Mongolia and adjacent regions of China. Origin Late 19th century: from Latin paene 'almost' + plain1.
随便看	release therapy release version releasing factor releasor relection relegable relegate relegation relegitimise relegitimize relend relent relentful relentless relentlessly relentlessness relentment relet relevance relevancy relevant relevantly relevel relevy relevé

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