EOS 101 Review #6
The following tectonic plate carries mostly oceanic crust and only very little continental crust:
Pacific Plate
Somalia, Ethiopia, Djibouti, Kenya, Uganda and Tanzania are some of the countries you can visit to see this type of plate boundary in action...
continental rifting
The Lesser Antilles are the result of this type of plate boundary:
convergent
A mid-oceanic ridge is a type of ________ boundary
divergent
Seafloor spreading ridges and continental rifts are examples of this type of boundary:
divergent
Passive continental margins develop in settings dominated by.....
none of the above
The eastern coast of the North American continent is a_____________
none of the above
The subduction trench is....
none of the above
An accretionary wedge consists primarily of...
pelagic deep ocean sediments
The following are the primary driving forces of plate tectonics
ridge push, slab pull
The San Andreas transform boundary has a ______________ motion.
right-lateral
The following tectonic setting creates new ocean crust:
seafloor spreading ridges
What do geologists call the accumulation of subducted slab remnants in the mantle?
slab graveyard
Flux-driven melting is the primary source of melting in.....
subduction zones
You are safe from earthquakes at what following plate boundary:
ALL plate boundaries experience frequent earthquakes
The subducting tectonic plate is destroyed and melts down into magma within a short distance of the subduction zone
False
A single tectonic plate can carry both continental and oceanic crust. T or F?
True
Continental rifts are a good place to visit if you wanted to see volcanoes. T or F?
True
Continental rifts are preceded by____________
a volcanic bulge
You really want to visit an active plate boundary BUT you are terrified of volcanoes. You visit a boundary that is guaranteed to have no active volcanoes like...
an orogenic blet (himalayas)
