Exam 12: Plate Tectonics: The Framework for Modern Geology

Evidence for the supercontinent Pangaea includes fit of continents, matching fossils and mountain chains separated by ocean basins, and ancient glaciated rocks in the southern hemisphere.

In the nomenclature of J.Tuzo Wilson, a very long-lived magma source rising from deep in the mantle is called a(n)________.

Wegener's continental drift hypothesis was unanimously accepted by the international scientific community when he proposed it.

The largest earthquakes are all deeper than 700 km.

Rifting and normal faulting are characteristic of a ________ plate boundary.

Pangaea began to break up in Permian time, about 500 million years ago.

Describe exactly what type of plate boundary is illustrated below and explain your answer.

The oldest rocks on the seafloor (<180 million years)are much younger than the oldest rocks on the continents (4.3 billion years).

The mid-Atlantic ridge is a ________ plate boundary.

What is the tectonic environment for the volcanoes Kilimanjaro and Mt.Kenya?

Which of the following most accurately describes the volcanoes of the Hawaiian Islands?

If the North Atlantic began to rift about 200 million years ago, initiating the break up of Pangaea, where are the Jurassic basalts from that initial rifting?

What is measured with GPS for measuring plate tectonic separations?

Name two different locations on continental crust today, that are or were continental rifts?

The ________ were formed in the late Paleozoic when sediments in a marine basin were squeezed and crumpled between the converging continents of Europe and Asia.

What is the name of the volcanic mountain chain shown in the diagram below?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

As the South Atlantic basin widens by seafloor spreading, Africa and South America are moving closer together.

When rocks record a magnetic vector that is opposite to today's magnetic field they are said to be ________.

The chaotic accumulation of deformed oceanic sediments, and scraps of ocean crust found plastered onto a convergent continental margins, like that where the Cocos plate subducts beneath western Mexico, is called ________.