411 REFERENCE · Wiktionary
Norian
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From en norite.
Adjective
-
en geology Relating to the upper portion of the Laurentian rocks.
1881, Louis Pope Gratacap, The Primeval American Continent (written in Popular Science Monthly Volume 19)
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."
Proper noun
1
en geology An age from 216.5 ± 2.0 to 203.6 ± 1.5 532 to 523 million years ago, a subdivision of the Triassic.
Anagrams
en ainnor nanori nonair