Dynamic Planet B/C

Test your knowledge of various Science Olympiad events.
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Re: Dynamic Planet B/C

Postby UTF-8 U+6211 U+662F » February 15th, 2018, 3:08 pm

Okay, I'll start this over. Name a type of triple junction stable over geologic time.

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Re: Dynamic Planet B/C

Postby pb5754[] » February 23rd, 2018, 5:21 pm

A Ridge-Ridge-Ridge (RRR) Junction?

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Re: Dynamic Planet B/C

Postby UTF-8 U+6211 U+662F » February 23rd, 2018, 5:32 pm

A Ridge-Ridge-Ridge (RRR) Junction?
Yep, your turn.

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Re: Dynamic Planet B/C

Postby pb5754[] » February 23rd, 2018, 5:44 pm

What did each of the following people contribute to plate tectonics and geology?
1. Abraham Ortelius
2. Marie Tharp
3. Charles Lyell
4. Abraham Gottlob Werner
5. Anton Moro

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Re: Dynamic Planet B/C

Postby UTF-8 U+6211 U+662F » February 23rd, 2018, 7:21 pm

What did each of the following people contribute to plate tectonics and geology?
1. Abraham Ortelius
2. Marie Tharp
3. Charles Lyell
4. Abraham Gottlob Werner
5. Anton Moro
1. First person to theorize the continents were joined together 2. Used data to create a map of the Atlantic which led to the discovery of the Mid-Atlantic Ridge 3. Popularized work of James Hutton, especially involving uniformitarianism

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Re: Dynamic Planet B/C

Postby pb5754[] » February 23rd, 2018, 8:03 pm

What did each of the following people contribute to plate tectonics and geology?
1. Abraham Ortelius
2. Marie Tharp
3. Charles Lyell
4. Abraham Gottlob Werner
5. Anton Moro
1. First person to theorize the continents were joined together 2. Used data to create a map of the Atlantic which led to the discovery of the Mid-Atlantic Ridge 3. Popularized work of James Hutton, especially involving uniformitarianism
Correct so far... I'm still looking for #4 and #5

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Re: Dynamic Planet B/C

Postby allopathie » February 24th, 2018, 4:38 pm

What did each of the following people contribute to plate tectonics and geology?
4. Abraham Gottlob Werner
5. Anton Moro
Werner was a proponent of Neptunism (that rocks formed from crystallisation of ocean rocks) while Moro proposed the opposing view of plutonium, that igneous rocks arose from magma. I think this showed up at MIT or some other invitational and we weren’t able to find it on our cheat sheet. Oh well.

New question: which boundary produces earthquakes of the greatest magnitude and why?
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Re: Dynamic Planet B/C

Postby JoeyC » February 24th, 2018, 4:45 pm

I believe the correct answer to your question would be transform boundaries because of their tendency to have slip-strike actions which cause one plate to accelerate (relatively fast) til it collides yet again with the opposite plate. (whereas in convergence, resistance is always felt)

If I got it right, I guess the next question should be : what is the most dangerous type of landslide?
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Re: Dynamic Planet B/C

Postby allopathie » February 24th, 2018, 4:50 pm

I believe the correct answer to your question would be transform boundaries because of their tendency to have slip-strike actions which cause one plate to accelerate (relatively fast) til it collides yet again with the opposite plate. (whereas in convergence, resistance is always felt)
It’s actually convergent, generally at subduction zones: http://www.geo.cornell.edu/geology/facu ... -001-2.png

The reasoning is that there’s a much larger surface area for locking and frictional slip to occur.

I’ll let someone else answer your question.
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Re: Dynamic Planet B/C

Postby JoeyC » February 24th, 2018, 6:16 pm

Ah, that would make sense; they do have more area for friction than transform boundaries.
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