Ampthilln.

/ˈæmthɪl/

Etymology: < the name of a town in Bedfordshire, England.

Geol.

Ampthill Clay n. (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.

ΘΚΠ

the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Jurassic > specific

Oxford clay1812

cornbrash1813

Kellaways1813

Portland oolite1814

coral-rag1816

oolite1816

Oxford oolite1818

Kimmeridge clay1830

lias1833

Portland sand1836

skull-cap1839

Solenhofen slate1841

Stonesfield slate1855

Callovian1856

Tithonian1869

coralline oolite1871

Lincolnshire limestone1873

Ampthill Clay1877

Aalenian1882

Pliensbachian1903

1877 Q. Jrnl. Geol. Soc. 33 260/1 (heading) Ampthill Clay and Elsworth Rock.

1877 Q. Jrnl. Geol. Soc. 33 313 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.]

1946 L. D. Stamp Britain's Struct. xii. 133 North of Oxford the Oxford Clay is succeeded by the similar Ampthill Clay.

1989 Proc. Geol. Assoc. 100 353/1 Although it is generally agreed that the section exposed both Ampthill Clay and Kimmeridge Clay, the precise stratigraphy has remained obscure.

This entry has not yet been fully updated (first published 1997; most recently modified version published online November 2010).

单词	ampthill
释义	Ampthilln. /ˈæmthɪl/ Etymology: < the name of a town in Bedfordshire, England. Geol. Ampthill Clay n. (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. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Jurassic > specific Oxford clay1812 cornbrash1813 Kellaways1813 Portland oolite1814 coral-rag1816 oolite1816 Oxford oolite1818 Kimmeridge clay1830 lias1833 Portland sand1836 skull-cap1839 Solenhofen slate1841 Stonesfield slate1855 Callovian1856 Tithonian1869 coralline oolite1871 Lincolnshire limestone1873 Ampthill Clay1877 Aalenian1882 Pliensbachian1903 1877 Q. Jrnl. Geol. Soc. 33 260/1 (heading) Ampthill Clay and Elsworth Rock. 1877 Q. Jrnl. Geol. Soc. 33 313 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.] 1946 L. D. Stamp Britain's Struct. xii. 133 North of Oxford the Oxford Clay is succeeded by the similar Ampthill Clay. 1989 Proc. Geol. Assoc. 100 353/1 Although it is generally agreed that the section exposed both Ampthill Clay and Kimmeridge Clay, the precise stratigraphy has remained obscure. This entry has not yet been fully updated (first published 1997; most recently modified version published online November 2010). < n.1877
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