请输入您要查询的英文单词:

 

单词 microgranite
释义

Definition of microgranite in English:

microgranite

noun ˈmʌɪkrəʊˌɡranɪt
mass nounGeology
  • Granite that is recognizable as crystalline only under a microscope.

    Example sentencesExamples
    • The microgranite has been dated at 416 + or - 20 Ma.
    • The age of the Carrock microgranite provides further evidence that both calc-alkaline and tholeiitic magmas were available during Caradoc magmatism in the Lake District.
    • The microgranite has a felsitic groundmass containing microphenocrysts of albite and orthoclase along with phenocrysts of corroded quartz and sporadic dihedral garnet; zircon and apatite are conspicuous accessory minerals.
    • This is a coarsegrained biotite gneiss with an average granodioritic composition, that is generally fairly homogeneous but locally shows gneissic banding, and is intruded by veins of microgranite and pegmatite.
 
 
随便看

 

英语词典包含464360条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/25 9:23:29