Geology Flashcard

Front

What evidence was found in the equatorial regions of Pangaea?

Back

Coal deposits are found in the equatorial regions of Pangaea, indicating a warm, tropical climate.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle.

Front

What has occurred every 500,000 years during the past 65 million years?

Back

Magnetic reversals, where the Earth's magnetic field changes direction, have occurred approximately every 500,000 years.

Front

What geological feature is commonly found at convergent plate boundaries?

Back

Volcanic arcs are commonly formed at convergent plate boundaries due to the subduction of one plate beneath another.

Front

Which type of plate boundary is associated with the creation of new oceanic crust?

Back

Divergent boundaries are where tectonic plates move apart, leading to the formation of new oceanic crust.

Front

What are glacial striations?

Back

Glacial striations are scratches or grooves cut into bedrock by glacial movement, indicating past glacial activity.

Front

What is the difference between the crust and the mantle?

Back

The crust is the outermost layer of the Earth, while the mantle is the layer beneath the crust, composed of semi-solid rock.

Front

What is a subduction zone?

Back

A subduction zone is a region where one tectonic plate moves under another, often leading to volcanic activity.

Front

What are mid-ocean ridges?

Back

Mid-ocean ridges are underwater mountain ranges formed by the upwelling of magma at divergent plate boundaries.

Front

What is the significance of fossilized desert plants found in Pangaea?

Back

Fossilized desert plants indicate that Pangaea had diverse climates and ecosystems, supporting the theory of continental drift.