Sentence Examples


  • The oldest rocks of Elba consist of schist and serpentine which in the eastern part of the island are overlaid by beds containing Silurian and Devonian fossils.
  • The island is composed of marble, though gneiss and mica-schist are to be found in a few places.
  • Granite is the most widely spread of the crystalline rocks; but dikes of various kinds occur, and gneiss, schist and marble are also met with.
  • Tremolite-schist and anthophyllite-schist are in nearly all cases the representatives of the ultra-basic igneous rocks such as peridotite in regions of high metamorphism.
  • Occasionally serpentines become sheared without yielding talcose minerals; they are then known as serpentine-schist and antigoriteschist, the latter being tough leek-green rocks, more or less transparent.
 

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