gault
/gɔːlt/noun
(亦作 gault clay)［mass noun］
1- a thick, heavy clay重黏土。
1.1
- （一般作 Gault）Geology a series of Cretaceous clays and marls forming strata in southern England【地质】高尔特阶, （英格兰南部的）白垩系黏土和泥灰岩层。
词源
late 16th cent.: possibly related to Old Swedish galt, neuter of galder 'barren'.