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单词 Portlandian
释义

Portlandian

/pɔːtˈlandɪən/
Geology
adjective
Of, relating to, or designating the uppermost division of the Jurassic of Europe, in which Portland oolite occurs, sometimes regarded as a stage lying above the Kimmeridgian.
noun
The Portlandian stage or series of rocks. Chiefly with the.

Origin

Mid 19th century; earliest use found in The North British Review. From the name of Portland + -ian, after Portland oolite.

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更新时间:2024/9/20 7:48:33