Norian
形容词 adj.
专有名词
英文释义
形容词 adj.
-
Relating to the upper portion of the Laurentian rocks.
— The Norian rock is distinguished by the abundance of labradorite, a feldspar possessing iridescent tints, and is found in Essex County, New York, Labrador, extensively along the St. Lawrence, upon Lake Huron, while "bowlders of it are occasionally found along the eastern shores of Maine and Massachusetts, and also in northern New Jersey."
专有名词
- An age from 216.5 ± 2.0 to 203.6 ± 1.5 532 to 523 million years ago, a subdivision of the Triassic.
词形变化
词源
词源 1
From norite.
词源 2
From norite.
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数据来源: Wiktionary