The Student's Handbook of Physical Geology

action already altered amount appear become beds blocks bottom called carbonate carried cause chemical clay cliffs coast colour consist containing continued course crust crystals currents deposits depth described direction distance district earth edition effect elevation erosion exist extent fact fall fault feet fissures flow force formation formed frequently Geology gradually granite greater ground hard hills History igneous increase instance island joints kind known lake land lava less lime limestone lower mass material matter means metamorphic miles mineral mountain nature Notes observed occur original planes portion Portrait present pressure probably produced rain remains result rise river rocks sand sandstone seen shales shore side siliceous similar slope solid sometimes stones stream structure surface taken term thickness tion Trans valley various vertical volcanic vols whole