Range of intrusive igneous landforms

Range of intrusive igneous landforms

1. Batholith

   • Large masses of intrusive rock that may dome out of the surface as they form.
     • Exposed by watering and erosion- this is made easier by the fractrues and cracks formed on the surface as its stretched during uplift
   • The largest of igneous rocks that form as a result of magma forcing its way into the rock above it. It cools forming granite, exposed by weathering and erosion.
   • Half dome in Yosemite National Park, USA

2. Sill

   • Intrusions formed parallel to bedding planes.
     • They can be called, horizontal and concordant
       • Magma flows along lines of weakness, before cooling and solidifying
         • As magma cools it contracts and cracks

3. Dyke