Dynamic Planet B/C

[pb5754]

What was the greatest extinction event in history?

[OrigamiPlanet]

What was the greatest extinction event in history?

Answer (Click to Show Hidden Text)

The Permian Mass Extinction or the Great Dying

[pb5754]

What was the greatest extinction event in history?

Answer (Click to Show Hidden Text)

The Permian Mass Extinction or the Great Dying

Correct.

[OrigamiPlanet]

Question (Click to Show Hidden Text)

1. What's the deadliest lava flow that exists? (Things like a'a, pyroclastic, etc.)
2. What's the Hotspot Theory and who proposed it?
3. True or False: A failed double-arm junction is an aulacogen.

[UTF-8 U+6211 U+662F]

Click to Show Answer

1)Pyroclastic?

2)The idea that some island chains are created from plumes in the mantle that the lithosphere moves over; Tuzo Wilson

3)False

[birdylayaduck08]

1. Pyroclastic surge, due to its low density of volcanic material (higher proportion of gases). They contain a lot of toxic gases, suffocating anything in its path moving quickly.
2. Proposed by Jason Morgan and J. Tuzo Wilson, the Hotspot Theory was to describe why some areas could have so much volcanic activity despite being located in the middle of a plate. Came up with the idea of mantle plumes sitting under a hotspot, which is an upwelling of abnormally hot rock in the Earth's mantle.
3. False; it's triple

[LiteralRhinoceros]

It's your turn to pose a question

[UTF-8 U+6211 U+662F]

I'll just assume I'm right.

Describe normal, reverse, and strike-slip faults. Include what type of stress they are caused by and what plate boundaries they are associated with.

[AarushMehta]

I'll just assume I'm right.

Describe normal, reverse, and strike-slip faults. Include what type of stress they are caused by and what plate boundaries they are associated with.

Answer (Click to Show Hidden Text)

[u]Normal[/u]: hanging wall moved under footwall: tension, divergent. [u]Reverse[/u]: hanging wall moved over footwall: compression, convergent [u]Strike-slip[/u]: horizontally slid past one another: shear, transform

[UTF-8 U+6211 U+662F]

I'll just assume I'm right.

Describe normal, reverse, and strike-slip faults. Include what type of stress they are caused by and what plate boundaries they are associated with.

Answer (Click to Show Hidden Text)

[u]Normal[/u]: hanging wall moved under footwall: tension, divergent. [u]Reverse[/u]: hanging wall moved over footwall: compression, convergent [u]Strike-slip[/u]: horizontally slid past one another: shear, transform

Yep, your turn