| 释义 |
〔hornfels〕A fine-grained metamorphic rock composed of quartz, feldspar, mica, and other minerals, formed by the action of intrusive rock upon sedimentary rock, especially shale.角页岩：一种纹理清晰的变质岩，由石英、长石、云母和其他矿物组成，因侵入岩对沉积岩，特别是页岩的作用而形成〔lamprophyre〕Any of several intermediate igneous rocks constituting feldspar and ferromagnesium minerals that occur as dikes and minor intrusions.煌斑岩：任一种含有长石和铁镁矿物中型的黑色岩石，呈现为岩脉或侵入岩 |