paleoplain

paleoplain

[′pāl·ē·ə‚plān]
(geology)
An ancient degradational plain that is buried beneath later deposits.
References in periodicals archive ?
Overall gradients are above 1% and in the case of steep slopes, 10%, descending from the pampa plain to a low-lying paleoplain.
These deposits acquire the characteristics of colluvium on the slopes and give rise to a dune relief in the paleoplain.