A European series of sedimentary rocks of Upper Triassic age, represented in England chiefly by marls and sandstones.
〔地质〕考依波（阶）
as modifierthe red Keuper marls
红色考依波泥灰岩。
Example sentencesExamples
Well crystallized illite, and chlorite are the most predominant clay minerals in the Keuper rocks, followed in amount by very well crystallized kaolinite, and palygorskite.
Lower Keuper sandstones contain a high percentage of cements and are therefore very susceptible to weathering damages.
These are layers of Keuper Marl, a reddish-brown clay with some shaley bands within, which are 1,200 feet thick in places.
The basins that contain the Keuper formed in part of the Atlantic rift system, where it extends into Europe.
These are the Bunter, Muschelkalk and Keuper formations, which he grouped into the Trias, and today this is called the Triassic System.
Origin
Mid 19th century (originally a miners' term): German.