Tongrianadj.

/ˈtɒŋɡrɪən/

Etymology: < Tongres, in Belgium, where developed + -ian suffix.

Geology.

Name for marine strata of the Lower Oligocene of Belgium.

ΘΚΠ

the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > tertiary or Cenozoic > Oligocene spec.

Rupelian1852

Tongrian1883

Stampian1893

1883 Science II. 16/1 The oligocene system shows two principal divisions (tongrian, rupelian), which stretch across the lower part of the river Escaut.

1885 A. Geikie Text-bk. Geol. (ed. 2) 864 The Tongrian deposits contain an abundant marine fauna = the Egeln beds of Germany.

1885 C. Lyell Elem. Geol. xv. 202 The lower division [of the Oligocene], or Tongrian, includes the sands in the neighbourhood of Tongres, and..corresponds with the upper part of the Gypseous series of Montmartre, and with the Headon series of England.

This entry has not yet been fully updated (first published 1913; most recently modified version published online June 2018).

单词	tongrian
释义	Tongrianadj. /ˈtɒŋɡrɪən/ Etymology: < Tongres, in Belgium, where developed + -ian suffix. Geology. Name for marine strata of the Lower Oligocene of Belgium. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > tertiary or Cenozoic > Oligocene spec. Rupelian1852 Tongrian1883 Stampian1893 1883 Science II. 16/1 The oligocene system shows two principal divisions (tongrian, rupelian), which stretch across the lower part of the river Escaut. 1885 A. Geikie Text-bk. Geol. (ed. 2) 864 The Tongrian deposits contain an abundant marine fauna = the Egeln beds of Germany. 1885 C. Lyell Elem. Geol. xv. 202 The lower division [of the Oligocene], or Tongrian, includes the sands in the neighbourhood of Tongres, and..corresponds with the upper part of the Gypseous series of Montmartre, and with the Headon series of England. This entry has not yet been fully updated (first published 1913; most recently modified version published online June 2018). < adj.1883
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