1. Section 10-4 Igneous rock features

2. Batholith Large intrusive rock body Hundreds kilometers wide Magma cools underground Old magma chamber

5. laccolith Laccoliths are somewhat large intrusions that result in uplift and folding of the preexisting rocks above the intrusion. They are also concordant types of intrusions.

8. Dike – Vertical intrusion that cuts across rock layers

9. Shiprock volcanic neck and dike, symbols of New Mexico geology, west of Farmington, NM.

11. sill Sill Horizontal intrusion of magma between vertical layers or cracks

13. Volcanic neck Volcanic neck – Hardened magma inside of the vent Volcanic cone is eroded away leaving the neck exposed

19. caldera Top/crater of volcano collapses in on itself leaving a larger crater. Caldera lake – Sometimes the crater fills in with water creating a lake