Purbeckiann.adj.

Brit.

/pəːˈbɛkɪən/, U.S.

/pərˈbɛkiən/

Origin: From a proper name, combined with an English element; modelled on a French lexical item. Etymons: proper name Purbeck , -ian suffix.

Etymology: < the name of Purbeck (see Purbeck n.) + -ian suffix, after French purbéckien ( A. Brongniart Tableau des terrains (1829) p. vii).

Geology.

A. n.

A stage in the British Upper Jurassic and Lower Cretaceous, above the Portlandian and below the Wealden, represented by prominent strata at Purbeck.

ΘΚΠ

the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > others

Menevian1871

Gondwana1873

Purbeckian1874

Ozarkian1909

1874 J. D. Dana Man. Geol. (ed. 2) iii. ii. 435 The Purbeckian is the Dublisian of Desor and Tithonic of Oppel.

1896 Science 25 Dec. 946/2 It is a freshwater deposit contemporaneous with the Purbeck strata of Swanage..called now on the continent of Europe the Purbeckian.

1933 W. J. Arkell Jurassic Syst. Great Brit. xvii. 552 There is room for a very long and important epoch between the Cretaceous and the Portlandian, an epoch for the widely-scattered marine equivalents of which the terms ‘Purbeckian’ or ‘Aquilonian’ seem inappropriate.

1969 Proc. Geol. Soc. Aug. 153 Jurassic Age/Standard Stage names... It is recommended that Purbeckian be not considered for this purpose.

1990 W. B. Harland et al. Geol. Time Scale iii. 52/2 Tithonian replaces Arkell's Portlandian and Purbeckian.

B. adj.

Of, relating to, or designating the Purbeckian stage.

ΚΠ

1882 A. Geikie Text-bk. Geol. 796 The Purbeckian beds have been divided into three sections.

1941 Jrnl. Paleontol. 15 320/2 The Purbeckian species L[eptolepis] brodiei Agassiz is said to be related to these.

1973 D. V. Ager Nature of Stratigraphical Rec. iii. 31 The so-called ‘Purbeckian’ Stage at the top of the Jurassic reaches a maximum [thickness] of 562 feet under the Weald south of London. Yet only 30 miles or so away the ‘Purbeckian’ is down to a mere 3 feet..on the French cliffs near Boulogne.

2005 Sedimentary Geol. 177 212/2 In England..ostracods..are found in between the Tithonian and the first Purbeckian deposits.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	purbeckian
释义	Purbeckiann.adj. Brit. /pəːˈbɛkɪən/, U.S. /pərˈbɛkiən/ Origin: From a proper name, combined with an English element; modelled on a French lexical item. Etymons: proper name Purbeck , -ian suffix. Etymology: < the name of Purbeck (see Purbeck n.) + -ian suffix, after French purbéckien ( A. Brongniart Tableau des terrains (1829) p. vii). Geology. A. n. A stage in the British Upper Jurassic and Lower Cretaceous, above the Portlandian and below the Wealden, represented by prominent strata at Purbeck. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > others Menevian1871 Gondwana1873 Purbeckian1874 Ozarkian1909 1874 J. D. Dana Man. Geol. (ed. 2) iii. ii. 435 The Purbeckian is the Dublisian of Desor and Tithonic of Oppel. 1896 Science 25 Dec. 946/2 It is a freshwater deposit contemporaneous with the Purbeck strata of Swanage..called now on the continent of Europe the Purbeckian. 1933 W. J. Arkell Jurassic Syst. Great Brit. xvii. 552 There is room for a very long and important epoch between the Cretaceous and the Portlandian, an epoch for the widely-scattered marine equivalents of which the terms ‘Purbeckian’ or ‘Aquilonian’ seem inappropriate. 1969 Proc. Geol. Soc. Aug. 153 Jurassic Age/Standard Stage names... It is recommended that Purbeckian be not considered for this purpose. 1990 W. B. Harland et al. Geol. Time Scale iii. 52/2 Tithonian replaces Arkell's Portlandian and Purbeckian. B. adj. Of, relating to, or designating the Purbeckian stage. ΚΠ 1882 A. Geikie Text-bk. Geol. 796 The Purbeckian beds have been divided into three sections. 1941 Jrnl. Paleontol. 15 320/2 The Purbeckian species L[eptolepis] brodiei Agassiz is said to be related to these. 1973 D. V. Ager Nature of Stratigraphical Rec. iii. 31 The so-called ‘Purbeckian’ Stage at the top of the Jurassic reaches a maximum [thickness] of 562 feet under the Weald south of London. Yet only 30 miles or so away the ‘Purbeckian’ is down to a mere 3 feet..on the French cliffs near Boulogne. 2005 Sedimentary Geol. 177 212/2 In England..ostracods..are found in between the Tithonian and the first Purbeckian deposits. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.adj.1874
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