Exam 3: Drifting Continents and Spreading Seas

According to the figure below,fracture zones lay roughly ___________ to mid-ocean ridges.

Evidence that glaciers once covered an area might include ______________.

The oldest basalts on the ocean floor are about ____________ years old.

If we mentally align the continents to fit Wegener's concept of Pangaea,evidence of Late Paleozoic glacial deposits ____________.

The discovery that each continent had different and separate polar wander paths proved that _____________.

In Wegener's evidence for continental drift,continents were proposed to fit together,such as the east coast of South America with the __________________ and the upper west coast of Africa with the _______________.

The deep ocean floor is flat and nearly featureless.

Wegener's evidence for a united Pangaea was so compelling that virtually all geologists agreed with the idea of continental drift during his lifetime.

Evidence of paleomagnetism can be found in _________________.

The theory of plate tectonics is a theory because it _____________.

The apparent polar wander path obtained from magnetite crystals in basalts on the North American continent is now interpreted to be the result of ____________.

All basalts younger than 700,000 years old ____________.

An average everyday compass depicts inclination.

Deep ocean trenches are found predominantly along the perimeter of the _____________ and can reach depths up to ____________,deep enough to swallow Mount Everest.

Consult the figure below.Marine magnetic anomaly belts are widest when and where ____________.

Which plant genus dominated glaciated regions during the Late Paleozoic and Early Mesozoic?

Evidence for a united Pangaea comes from the fossil record of which type(s)of organisms?

Consult the figure below.Abundant swamps led to the formation of coal during the Late Paleozoic in which of the following places?

According to Wegener,puzzle pieces are to a jigsaw puzzle as ____________ is/are to Pangaea.

Late Paleozoic glacial deposits are NOT found in which of the following places?