metagenesis

1. The ore deposit forming went through four stages: those are volcano-sedimentary, regional metamorphism, tectonic hydrothermal and magmatic hydrothermal, so it is a metagenesis to postmagmatic meta morphic hydrothermal gold ore deposit.
   矿床形成经历了火山沉积期、区域变质期、构造热液成矿期及岩浆热液成矿期4个阶段，属沉积变质&岩浆期后热液叠加改造的变质热液金矿床。
2. This gas brine has two types as metagenesis and potassium salt leach stack, is meaningfulness as resource and being indication for seeking potassium minerals.
   富钾含钾气田卤水有沉积变质型和钾盐溶滤叠加型两类。卤水具重要的资源意义和固液态钾盐找矿的指示意义。

noun

1. alternation of sexual and asexual generations

   Synonym:    digenesis