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EVOLUTION OF THE TWO YOUNGEST (QUATERNARY) SOIL LAYERS IN THE SOUTH‐EASTERN PORTION OF THE AUSTRALIAN ARID ZONE
Author(s) -
JESSUP R.W.
Publication year - 1961
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1961.tb00895.x
Subject(s) - pluvial , soil water , arid , quaternary , geology , deposition (geology) , aeolian processes , erosion , silt , period (music) , earth science , hydrology (agriculture) , soil science , geomorphology , sediment , geotechnical engineering , paleontology , physics , acoustics
Summary The Parakylia layer consists of a diversity of soils that formed during a former pluvial period. Representative profiles are given. The soils developed on deposits consisting of a mixture of water‐ and wind‐transported components. The period of erosion‐deposition, when the parent material layer formed, was initiated by the onset of arid climatic conditions. The climate eventually became desertic throughout practically the whole region. Calcareous wind‐borne materials, derived through deflation of soils farther to the west, were transported into the region where they were mixed with water‐transported materials of local origin. The effects of increasing aridity on erosion and deposition are discussed in relation to the evolution of certain characteristics of the parent material layer and hence of the soils. The surface gravel pavements on many of the soils developed before the soils were formed.