panplanationn.
/ˌpanpləˈneɪʃn/, U.S. /ˌpænpləˈneɪʃ(ə)n/ Physical Geography. Now chiefly historical.
The coalescence of flood plains to form a panplain.
ΘΚΠ
the world > the earth > structure of the earth > formation of features > erosion or weathering > [noun] > erosion of specific features
planation1877
lateritization1882
wedging1882
laterization1890
peneplanation1899
overdeepening1901
karsting1921
laterizing1929
panplanation1933
pedimentation1940
pediplanation1942
karstification1958
1933 C. H. Crickmay in Geol. Mag. 70 345 The essential difference between panplanation and peneplanation is that the former starts from the lower floodplains of rivers and grows laterally in all landward directions, whereas the latter is of universal occurrence.
1957 S. W. Wooldridge in G. Taylor Geogr. in Twentieth Cent. (ed. 3) vii. 170 The possibility..that peneplanation is in the last analysis wholly or partly panplanation—the integrated product of long-continued lateral corrasion by rivers.
1970 R. J. Small Study of Landforms v. 168 A process akin to panplanation has been assumed by some to account for savanna plains.
1993 Geomorphol. 6 361/1 Crickmay now elevated panplanation, seeing it as..the outcome of prolonged lateral planation.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).
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