| 释义 |
Ampthill, n. Geol.|ˈæmthɪl|
[The name of a town in Bedfordshire, England.]
Ampthill Clay, (a bed of) clay, similar to Oxford clay, deposited during the Oxfordian stage of the late Jurassic and cropping out south of the River Humber.
1877Q. Jrnl. Geol. Soc. XXXIII. 260/1 (heading) Ampthill Clay and Elsworth Rock. [Ibid. 313 At Ampthill, the place after which Mr Seeley has called the middle division of the clay, we have found in the débris of the railway-cutting a well marked spine of that most characteristic fossil Cidaris florigemma.] 1946L. D. Stamp Britain's Struct. xii. 133 North of Oxford the Oxford Clay is succeeded by the similar Ampthill Clay. 1989Proc. Geol. Assoc. C. 353/1 Although it is generally agreed that the section exposed both Ampthill Clay and Kimmeridge Clay, the precise stratigraphy has remained obscure. |