Simple Lithology

duricrust

http://resource.geosciml.org/classifier/cgi/lithology/duricrust

broader composite genesis rock
narrower duricrust
material formed in surficial environment
narrower duricrust
definition Rock forming a hard crust or layer at or near the Earth's surface at the time of formation, e.g. in the upper horizons of a soil, characterized by structures indicative of pedogenic origin. more like this
source This vocabulary more like this
type
Resource
Concept
in scheme simplelithology
is primary topic of duricrust