Which of the following features may occur when volcano lava cools at the surface ?

1)batholith


2)basalt plateau


3)laccolith


4)sill|||2) basalt plateau





"plateau basalt An extensive, thick, smooth flow or succession of flows of high-temperature, fluid basalt erupted from fissures, flooding topographic lows, and accumulated to form a plateau."





http://www.encyclopedia.com/doc/1O13-pla鈥?/a>








" noun





Definition:





layer of basalt rock: an extensive continental deposit of basaltic volcanic rock "





http://encarta.msn.com/dictionary_701704鈥?/a>|||A batholith is a very large body of cooled magma that represents a reservoir that failed to erupt.





A sill is a horizontal intrusion of magma below ground.





A laccolith is like a sill, only it bows upward.





A basalt plateau is a plateau formed by basalt lava. This is the only feature on your list that forms above ground.|||2) basalt plateau|||The answer is (3) laccolith.