原生岩浆（primary magma)是指由地幔或地壳岩石经熔融或部分熔融作用形成的成分未发生变异的岩浆。它不强调源区的岩石是否已经遭受过熔融作用或成分的变异，而强调的是形成的岩浆一定未发生过成分的变化。
原生岩浆是高镁拉斑玄武岩浆。
原生裂缝是岩浆冷凝结晶过程中形成的裂缝； 次生裂缝是火山岩及其原生裂缝系统受后期构造运动、溶蚀、风化等作用改造而形成的裂缝。
Primary fracture were formed during the lava crystal and the secondary fracture generated during the volcanic reconstruction by tectonic movement, and wind action, solution.
闽东南沿海晚中生代变质带内出露的I型花岗岩、细晶岩和伟晶岩中常包含岩浆成因的石榴子石和原生白云母。
I-type granites, aplites and pegmatites outcropping in Mesozoic metamorphic belt of the southeastern coast of Fujian Province contain commonly magmatic garnets and primary muscovites.
应用推荐