duricrust

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duricrust

[′du̇r·ə‚krəst]
(geology)
The case-hardened soil crust formed in semiarid climates by precipitation of salts; contains aluminous, ferruginous, siliceous, and calcareous material.
References in periodicals archive ?
Although there is a relatively consistent flux of salt from low hills and rises with preserved Cenozoic gravels and duricrusts on the crests, these features are often isolated and localised.
For instance, scarp recession may succeed a sequence dominated by slope lowering in weak strata if a resistant stratum is uncovered or if a potential duricrust develops in a weathered mantle.
2000) of catenary sequences of soil profiles describe upper slopes with typical lateritic soil profiles (Oxisols or Ferralsols) that have originated from the alteration of lateritic duricrusts developed from underlying sedimentary rocks (sandstones, mudstones, and siltstones from the Mesozoic Upper Bauru Group).
Duricrusts are among the most common surface phenomena known that affected ancient and modern landscapes.
Continentally formed duricrusts have frequently been reported from Spain.
In analogy to calcrete duricrusts, the term palycrete can be accepted for this duricrust.
Similarly, the widely occurring Fe nodules and duricrusts in coastal eastern Australia have been described as eroded remnants of laterite duricrusts (e.
Faniran A (1970) Maghemite in the Sydney duricrusts.