| 释义 |
Definition of Keuper in English: Keupernounˈkɔɪpə mass nounGeology A European series of sedimentary rocks of Upper Triassic age, represented in England chiefly by marls and sandstones. as modifier the red Keuper marls 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. |