Geologic Mapping C

Rob101101
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Re: Geologic Mapping C

Postby Rob101101 » January 25th, 2016, 4:06 pm

On the mounds view high school test on the test exchange, the first questions are based on a stereonet. Parts A and B are fine, but I have a problem with this one:

Once your friend realizes his mistake, the two of you return to the park and re-measure the
lineations. This time, you get the correct lineations from the previous set plus two additional sets.
What is the difference in angle between these two lineations? (7 points)

What two lineations are they talking about? What are the 'additional sets'?
http://scioly.org/wiki/images/6/63/2015CT_GEOL2_TEST.pdf

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Re: Geologic Mapping C

Postby kenniky » January 29th, 2016, 1:54 pm

Has anyone had to use the compass yet?
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Re: Geologic Mapping C

Postby aherthabey » January 29th, 2016, 4:45 pm

Has anyone had to use the compass yet?
I've been to two invitationals, and neither had me use the compass. Would we have to be provided with an actual outcrop? https://www.youtube.com/watch?v=FbXhooadhZw

[EDIT] Really, what questions would we have to use a compass for?
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Re: Geologic Mapping C

Postby Atomicbob11 » February 16th, 2016, 8:34 am

Hello! I'm new to this event this year, and I was wondering what the rules mean by "geological principles"? Thanks!
Geologic principles refers to Steno's four laws that are used to determine the ages of strata in a geologic cross section, as well as several other laws in geology that seem to be less important. This site http://www.cas.miamioh.edu/limpermuseum ... etime.html explains them well.
Although Steno's principles are considered the first few "landmark" principles, there are many more that have caught a lot of traction in the geologic world.
While Steno's principles include the Principle of Original Horizontality, Principle of Lateral Continuity, and the Principle of Superposition, (these are the big 3), there are many more, like the Principle of Faunal Succession, Principle of Baked Contacts, etc.

If you are new, I would work towards understanding the three Steno Principles I mentioned. They will be a big backbone of the event, especially with respect to relative dating.
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Re: Geologic Mapping C

Postby Atomicbob11 » February 16th, 2016, 8:36 am

Does anyone know what map is going to be used for regionals and where to obtain them or examples of them.
The maps used are at the discretion of the test creator and proctor. However, Geologic Maps and Topographic Maps are the two you should know instantly. If you look at the Test Exchange for Geologic Mapping, there are some great examples as to the type of maps that you should find, as there are invitational, regional, and state tests up.
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Re: Geologic Mapping C

Postby Atomicbob11 » February 16th, 2016, 8:43 am

For making a binder for this event, are sheet protectors useful, or will they just take up space? I used sheet protectors in Fossils, but I don't know whether tests in this event will require as much speed as in Fossils.
When I took the GeoMapping in its first year, we didn't use sheet protectors, as they only slowed us down, but that's our opinion. Both partners ever needed the binder, it was easier for us to just rip out the page than have to open and close the rings over and over. We also had a huge binder with a TON of information and past tests, so opening the rings was just a pain.

Also, when I write tests (I've written a lot for PA), they are always quite long. Usually long enough that if BOTH partners know what they're doing, they'll finish. This helps really separate the top from the bottom. As someone who took the event, it always helps to assume the test is this long, so you want to utilize your time, and binder use, the best of your ability to ensure you can get as much done to the best quality.

Just my two cents.
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Re: Geologic Mapping C

Postby Atomicbob11 » February 16th, 2016, 8:50 am

Has anyone had to use the compass yet?
I've been to two invitationals, and neither had me use the compass. Would we have to be provided with an actual outcrop? https://www.youtube.com/watch?v=FbXhooadhZw

[EDIT] Really, what questions would we have to use a compass for?
Not hating on a majority of the test makers, but often, GeoMapping test makers are not experts in geology, and therefore know how to use the compass. This obviously varies.

I have yet to see an invitational test with a compass, as it is new this year. However, I bet that at a regional or state level, you may need it, as test makers are normally more proficient in the area (again, not always true). If I were testing you, I would bring in a rock, and have you measure the attitude as it sits on a table for example. However, you could also do this on anything that is slanted, like a piece of wood, binder at an angle, etc.

In my opinion, I don't think the addition of a geologic compass was necessary for the event. I completely understand why they would do this, but GeoMapping has such a wide range of knowledge that needs to be known for the event, that adding a technical skill like this just adds to it. Also, as someone who is currently majoring in geoscience, ive never used one. There is an App for that.

However, it really isn't hard to learn how to use it. Youtube is your friend.
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Re: Geologic Mapping C

Postby aherthabey » February 18th, 2016, 9:22 pm

Has anyone had to use the compass yet?
I've been to two invitationals, and neither had me use the compass. Would we have to be provided with an actual outcrop? https://www.youtube.com/watch?v=FbXhooadhZw

[EDIT] Really, what questions would we have to use a compass for?
Not hating on a majority of the test makers, but often, GeoMapping test makers are not experts in geology, and therefore know how to use the compass. This obviously varies.

I have yet to see an invitational test with a compass, as it is new this year. However, I bet that at a regional or state level, you may need it, as test makers are normally more proficient in the area (again, not always true). If I were testing you, I would bring in a rock, and have you measure the attitude as it sits on a table for example. However, you could also do this on anything that is slanted, like a piece of wood, binder at an angle, etc.

In my opinion, I don't think the addition of a geologic compass was necessary for the event. I completely understand why they would do this, but GeoMapping has such a wide range of knowledge that needs to be known for the event, that adding a technical skill like this just adds to it. Also, as someone who is currently majoring in geoscience, ive never used one. There is an App for that.

However, it really isn't hard to learn how to use it. Youtube is your friend.
Thanks for the informative response! I actually found a guide to using the compass from the 2014 Coaches' Clinic (it's on the soinc.org website). Starting p. 53 (warning—link prompts download). https://www.soinc.org/sites/default/fil ... ressed.pdf
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Re: Geologic Mapping C

Postby bearasmith » February 26th, 2016, 8:28 am

Does anyone know what map is going to be used for regionals and where to obtain them or examples of them.
First of all, map types aren't specific to specific levels of competition—the same kinds of maps can be used at any level.

One is a topographic map, which shows the elevations and contours of the land from a bird's eye view.

example:
Image

Another is a geologic map (heh heh what this event's named for), which usually shows the patterns of rock formations under the surface.

example:
Image

And then there are other maps too that they could give you that are specific to the types of questions they'll ask, but these are the two main types of maps you would need to know. I mean, most maps are just variations derived from these two kinds of maps.
Hi, I'm wondering what the random letters and numbers are on the geologic map. (e.g. Of3, Qt3, Pc, and Pk) Is there supposed to be some sort of a key for the map that explains what the numbers mean?

Thanks,
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Re: Geologic Mapping C

Postby Unome » February 26th, 2016, 1:57 pm

Does anyone know what map is going to be used for regionals and where to obtain them or examples of them.
First of all, map types aren't specific to specific levels of competition—the same kinds of maps can be used at any level.

One is a topographic map, which shows the elevations and contours of the land from a bird's eye view.

example:
Image

Another is a geologic map (heh heh what this event's named for), which usually shows the patterns of rock formations under the surface.

example:
Image

And then there are other maps too that they could give you that are specific to the types of questions they'll ask, but these are the two main types of maps you would need to know. I mean, most maps are just variations derived from these two kinds of maps.
Hi, I'm wondering what the random letters and numbers are on the geologic map. (e.g. Of3, Qt3, Pc, and Pk) Is there supposed to be some sort of a key for the map that explains what the numbers mean?

Thanks,
Bearasmith
Generally there is a key (take a look at some of the tests on the test exchange). These label different rock strata; the first letter denotes the geologic period (e.g. Pc and Pk would be Permian) and the rest distinguish between different types of rocks and such (this is why the key is there, because there can be a lot of layers on some maps; for example, the map for the MIT test had at least a hundred layers).
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