keratophyre造句

• Riebeckite - quartz keratophyre
  钠闪石英角斑岩
• Quartz - keratophyre tuff
  石英角斑凝灰岩
• Soda keratophyre spilite
  钠角斑细碧岩
• From the study of lead isotope , we know that the lava of erlangping is ocean lava - spilite keratophyre , it is the main origin of lead in time evolvement sequence and genesis
  铅同位素研究表明本区二郎坪群的火山岩为洋壳火山岩?细碧角斑岩，在时间演化序列上和成因上它们作为pb的主要源岩。