quartzites 

  1. 名詞
(罕用)quartzite複數: 石英岩

    
                        
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例句

                

                    
    
                                                    
  1. 
                                Porphyritic rocks occur between the schists and the quartzites .                            
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                                Underlying this region are granites, quartzites , and some slates.                            
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                                For the outstanding fact about these quartzites is their persistence.                            
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                                This rock unit is formed by quartzites , meta-black shales, amphibolites and skarns.                            
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                                The quartzites are distinguished from the ferrous rocks by their low iron oxide content.                            
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