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Plate Tectonic
Igneous Rock Features
Vocabulary
100
Alfred Wegener proposed his hypothesis of
What is the continental drift
100
Magma that is forced into a crack that cuts across rock layers and hardens is called?
What is dike.
100
Ocean wave produced by an earthquake on the ocean floor
What is tsunami
200
evidence of cconitental drift came from
What is fossils,signs of climate change, and rock structure
200
Magma that is forced into a crack parallel to rock layers and hardens is called?
What is sill
200
the point on Earth's directly above the focus of an earthquake
What is Epicenter
300
Large ancient landmass that broke apart about 200,000 years ago
What is Pangaea
300
The largest intrusive igneous rock bodies are ?
What is Batholith.
300
Break in rock caused by shear forces, where rocks move past each other without much vertical movement.
What is strike-slip fault
400
Harry Hess's theory that the new seafloor is formed when magma is forced upward toward the surface at mid-ocean ridge
What is Seafloor spreading
400
Solid igneous core of fa volcano left behind after the softer cone has been eroded.
What is Volcanic Neck.
500
the older seafloor moves away from
What is the mid-Ocean ridge in opposite directions
500
A large circular shaped opening formed when a top of the volcano collapses
What is caldera