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)