28.2 - Geological structure

Subdecks (3)

Cards (18)

  • Rock type and permeability
    • Igneous (granite/basalt) are crystalline, resistant and impermeable
    • Sedimentary - some are permeable (sandstone/limestone), some are porous (chalk) and some are impermeable (shale)
    • Metamorphic (shale/schist) are impermeable