Geologic Mapping C

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Re: Geologic Mapping C

Postby Snayhill » November 14th, 2018, 8:36 pm

Do you guys have any idea as to what specific geohazards we should have in our binders?

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Re: Geologic Mapping C

Postby PikaPikaChu » November 28th, 2018, 2:42 pm

Snayhill wrote:Do you guys have any idea as to what specific geohazards we should have in our binders?


I'd get the obvious ones, general info about earthquakes, volcanoes, hurricanes, and tsunamis.
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Re: Geologic Mapping C

Postby Unome » November 28th, 2018, 3:43 pm

Snayhill wrote:Do you guys have any idea as to what specific geohazards we should have in our binders?

Earthquakes, volcanoes, slumps, rockfalls, and rockslides are the ones that immediately come to mind for me. Anything that applied to Dynamic Planet's previous topic would probably fit well.
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Re: Geologic Mapping C

Postby fleicol1 » December 4th, 2018, 1:20 pm

does anyone have any good geo mapping test?

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Re: Geologic Mapping C

Postby UTF-8 U+6211 U+662F » December 4th, 2018, 3:48 pm

fleicol1 wrote:does anyone have any good geo mapping test?

Unome's geomapping test is on the test exchange

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Re: Geologic Mapping C

Postby Qu€€nMon€y » December 21st, 2018, 4:21 pm

Is there a good geology book that is useful for this event? If there is could someone send me an amazon link to it? Thanks
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Re: Geologic Mapping C

Postby dxu46 » December 30th, 2018, 11:34 am

What do we need to know about geologic maps?

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Re: Geologic Mapping C

Postby UTF-8 U+6211 U+662F » December 30th, 2018, 11:57 am

dxu46 wrote:What do we need to know about geologic maps?

How to read them I guess. The rules give the example task of using geologic maps to help assess geohazard risks, construct a cross-section of sub-surface structures, and reconstructing the evolution of a given plate boundary.

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Re: Geologic Mapping C

Postby Qu€€nMon€y » January 2nd, 2019, 6:44 pm

The rule says tracing paper and pin. What kind of pin?
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Re: Geologic Mapping C

Postby Unome » January 3rd, 2019, 12:48 pm

Qu€€nMon€y wrote:The rule says tracing paper and pin. What kind of pin?

The ideal pin would of the capped type sometimes used with nametags. Any type of pin with a flat head should work, provided you can avoid being poked by the tip pointing upwards.
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Re: Geologic Mapping C

Postby syo_astro » January 3rd, 2019, 1:26 pm

Unome wrote:
Qu€€nMon€y wrote:The rule says tracing paper and pin. What kind of pin?

The ideal pin would of the capped type sometimes used with nametags. Any type of pin with a flat head should work, provided you can avoid being poked by the tip pointing upwards.


I believe I mentioned an example on the first page: viewtopic.php?f=285&t=12238#p359151 as well as noting that you should find example videos on youtube to see the process (which should help show you why / the type of pin you need): viewtopic.php?f=285&t=12238#p359155. Note for both those cases those are just examples, not necessarily the best or cheapest (aka I was just putting that together quickly as examples, you should look into it yourself of course).

Not sure what Unome means by capped pin for nametags (maybe/probably same thing?), but hopefully that should work/helps. Specify if it doesn't, etc!
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Re: Geologic Mapping C

Postby poonicle » January 4th, 2019, 7:17 pm

On one test, the formula for true thickness was given as T = Wsin(d) + Hcos(d) where T = true thickness, W = width, H = height, d = dip, whereas on another test, the formula for true thickness was given as T = Wsin(d) where T = true thickness, W = width, d = dip. Which one is the correct formula? I am very confused.
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Re: Geologic Mapping C

Postby UTF-8 U+6211 U+662F » January 4th, 2019, 7:28 pm

poonicle wrote:On one test, the formula for true thickness was given as T = Wsin(d) + Hcos(d) where T = true thickness, W = width, H = height, d = dip, whereas on another test, the formula for true thickness was given as T = Wsin(d) where T = true thickness, W = width, d = dip. Which one is the correct formula? I am very confused.

What is height?

(Note that a formula for true thickness can be derived using basic trig in emergencies!)

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Re: Geologic Mapping C

Postby Unome » January 5th, 2019, 3:30 am

UTF-8 U+6211 U+662F wrote:
poonicle wrote:On one test, the formula for true thickness was given as T = Wsin(d) + Hcos(d) where T = true thickness, W = width, H = height, d = dip, whereas on another test, the formula for true thickness was given as T = Wsin(d) where T = true thickness, W = width, d = dip. Which one is the correct formula? I am very confused.

What is height?

(Note that a formula for true thickness can be derived using basic trig in emergencies!)

I would strongly recommend deriving the formula yourself, so you understand how it works. There are several standard formulas for true thickness that cover various situations.
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Re: Geologic Mapping C

Postby Snayhill » January 12th, 2019, 1:18 pm

Hello Everyone!

I was just wondering if anyone here know what lines that are not faults in a relative dating/strata diagram are. Here's a link https://d2vlcm61l7u1fs.cloudfront.net/media%2Fd3f%2Fd3f1e735-faac-4704-aa99-61fcf269b020%2FphpIiQrsg.png. I'm specifically talking about "G" in this picture.

Thanks!


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