Pediplain


Also found in: Wikipedia.

pediplain

[′ped·ə‚plān]
(geology)
A rock-cut erosion surface formed in a desert by the coalescence of two or more pediments. Also known as desert peneplain; desert plain; panfan.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pediplain

 

an outwash plain formed in formerly mountainous or hilly arid and semiarid regions through the parallel retreat of valley slopes and the coalescing of pediments (see). Opinions differ concerning the mechanism triggering the formation of pediplains.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
We walk out of the school into Jhansi's pediplain, this last stage in the evolution of landforms, the final result of an infinity of erosion, exposing the earth's inner layers.
Pediplain is the result of inselbergs's destruction (Fig.
THE LANDSCAPE OF EXHUMED PEDIPLAIN landscape 1.1.1.
The entire watershed area can be classified into four important geomorphic units, namely, denudation hills, dissected pediment, valley fills, and pediplain. The prime source of groundwater in the watershed area occurs under both phreatic and semiconfined conditions in the weathered and fractured granites.
The major geomorphologic features are alluvial plain, paleochannels, pediments, pediplain, valley fill, coastal plain, deltaic plain and denudational hill (Figure 3).
The moderate potential zone (25.33%) is dominated by geologic units of laterite, geomorphic units such as pediments, pediplain, coastal plains, soil units of entisols, medium lineament and drainage density.
Shallow weathered buried pediplain is a smooth surface of weathered shales and phyllites with less than five meters of thickness are generally covered with black soils with moderate to good ground water yields.
Area statistics of hydrogeomorphological features S.No Category Area Percent ([Km.sup.2]) Area 1 Piedmont Zone (PZ) 14.3 5.6 2 Moderately Weathered Pediplain (PPM) 13.1 5.1 3 Shallow Weathered /buried 77 30.4 pediplainPediplain (PPS) 3 Shallow Weathered Pediplain (PPS) 99 39.2 4 Moderately Weathered Pediplain (PPM/CQ) 7.1 2.8 5 Shallow Weathered Pediplain (PPS/CQ) 2.1 0.8 6 Pediment 2.2 0.8 7 Linear Ridge ( L/CQ) 3.3 1.3 8 Structural Hill (SH/CQ) 11.4 4.5 9 Linear Ridge (L/BQ) 0.8 0.3 10 Structural Hill (SH/BQ) 19.4 7.6 Table 3.
-- 1976 Rock Art of the Cobar Pediplain in Central Western NSW, Australian Institute of Aboriginal Studies, Canberra.
Cortes (1999) and Cortes and Casas (2000) proposed that the formation of the Jiloca Depression is primarily related to erosional processes accompanied by the development of nested planation surfaces (pediplains) on the western margin.
Other authors propose alternative interpretations, such as multiple stepped pediplains developed during Paleogene to early Miocene times within the framework of compressive uplift (Gonzalez et al., 1998; Guimera y Gonzalez, 1998; Casas and Cortes, 2002), or Pliocene to Quaternary karstic corrosion surfaces (Gracia et al., 2003).