单词 | vein formation |
释义 | > as lemmasvein formation vein formation n. ΚΠ 1809 C. Anderson tr. A. G. Werner New Theory Formation Veins i. 5 By a vein formation [Ger. Gang-Formazion], or simply a formation, is to be understood all veins formed at the same time, and having one and the same origin. 1877 R. W. Raymond Statistics Mines & Mining 115 The creeks and gulches..cutting channels through this vein-formation. 1994 Northern Miner 3 Oct. 1/1 The veins contain various banded and resilicified breccia fabrics, which indicates a long history of vein formation. < as lemmas |
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