Vertisoln.
/ˈvəːtɪsɒl/ Soil Science.
A clayey soil with little organic matter found in regions having distinct wet and dry seasons, characterized by deep, wide cracks when dry and an uneven surface owing to the swelling and shrinking of the clay.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > earth or soil > kind of earth or soil > [noun] > clayey soil
rosil1691
black cotton soil1814
regur1822
Ultisol1960
Vertisol1960
1960 Soil Classif.: 7th Approximation (U.S. Dept. Agric.) ix. 124/1 The central concept of Vertisols is one of soils that crack widely, and that often remoisten from water that runs into the cracks rather than from water that percolates through the soil.
1970 Nature 2 May 429/1 Dark, cracking tropical clays, that is, vertisols, are characteristic of..the restricted clay plugs and back~swamps of the Omo Floodplain [in Ethiopia].
1981 Jrnl. Soil Sci. Soc. Amer. 45 668/1 In Vertisols, because of swelling and shrinking, bulk density of the soil is dependent on moisture content.
This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).
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n.1960