Geologic Mapping C

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Re: Geologic Mapping C
There's not just one website with all the info, but here's a startfleicol1 wrote:What would be a good website for information on all of the fault. I haven't had much luck finding a good one.
https://www.usgs.gov/faqs/whatafault ... e_products
https://en.wikipedia.org/wiki/Fault_(geology)
https://www.thoughtco.com/faulttypesw ... ms3879102
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Re: Geologic Mapping C
I've seen that there is some discussion on the concept of bed thickness. The only scenario I've seen so far is where T = V cos d where T is true thickness, V is vertical thickness, and d is the angle of dip (as found in this scenario. Are there any other scenarios where the other equations (such as T = V cos d  H sin d ) come into play?
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Re: Geologic Mapping C
It's best to just use trig instead of trying to apply an equation in that scenario in my opinion. Other equations would apply if other angles/lengths were given.l0lit wrote:I've seen that there is some discussion on the concept of bed thickness. The only scenario I've seen so far is where T = V cos d where T is true thickness, V is vertical thickness, and d is the angle of dip (as found in this scenario. Are there any other scenarios where the other equations (such as T = V cos d  H sin d ) come into play?
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Re: Geologic Mapping C
Heh, that's exactly what I was going to say.UTF8 U+6211 U+662F wrote:It's best to just use trig instead of trying to apply an equation in that scenario in my opinion. Other equations would apply if other angles/lengths were given.l0lit wrote:I've seen that there is some discussion on the concept of bed thickness. The only scenario I've seen so far is where T = V cos d where T is true thickness, V is vertical thickness, and d is the angle of dip (as found in this scenario. Are there any other scenarios where the other equations (such as T = V cos d  H sin d ) come into play?

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Re: Geologic Mapping C
whats the difference between brittle and friable? or are they interchangable?
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Re: Geologic Mapping C
Brittle is used more often in structural geology and thus this event. According to Wikipedia, friable is used in softrock geology and describes the tendency of a solid substance to break insto smaller pieces under duress or contact, especially by rubbing, e.g. sandstone.freed2003 wrote:whats the difference between brittle and friable? or are they interchangable?

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Re: Geologic Mapping C
I’m new to this forum so I’m not sure if I am supposed to ask questions on here, but I need help. I don’t know how to solve this problem any help would be great. Thank You!!
You notice a horizontal outcrop of an unfolded stratum with a midline 50 meters below the top of a vertical cliff, with a thickness of 3 meters. After climbing to the top of the cliff to investigate further, you find another outcrop of the stratum on the flat clifftop, 2.6 meters wide.
61. What is the true thickness of this stratum in meters? (3)
62. How far is the midline of the second outcrop from the cliff edge in meters? (2)
You notice a horizontal outcrop of an unfolded stratum with a midline 50 meters below the top of a vertical cliff, with a thickness of 3 meters. After climbing to the top of the cliff to investigate further, you find another outcrop of the stratum on the flat clifftop, 2.6 meters wide.
61. What is the true thickness of this stratum in meters? (3)
62. How far is the midline of the second outcrop from the cliff edge in meters? (2)

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Re: Geologic Mapping C
The first thing to do when encountering this kind of picture is drawing a picture and labeling relevant angles and lengths. In this case, you would probably only need to draw a cross section. From there, solve for the angles and remaining lengths using some trig calculations. If you need more help, I can attempt to draw a picture. For 62, you would probably use similar triangles.SciHenry2017 wrote:I’m new to this forum so I’m not sure if I am supposed to ask questions on here, but I need help. I don’t know how to solve this problem any help would be great. Thank You!!
You notice a horizontal outcrop of an unfolded stratum with a midline 50 meters below the top of a vertical cliff, with a thickness of 3 meters. After climbing to the top of the cliff to investigate further, you find another outcrop of the stratum on the flat clifftop, 2.6 meters wide.
61. What is the true thickness of this stratum in meters? (3)
62. How far is the midline of the second outcrop from the cliff edge in meters? (2)
Last edited by UTF8 U+6211 U+662F on March 19th, 2019, 5:26 pm, edited 1 time in total.

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Re: Geologic Mapping C
Yes can you draw the picture please? I would really appreciate it. Thank you!UTF8 U+6211 U+662F wrote:The first thing to do when encountering this kind of picture is drawing a picture and labeling relevant angles and lengths. In this case, you would probably only need to draw a cross section. From there, solve for the angles and remaining lengths using some trig calculations. If you need more help, I can attempt to draw a picture.SciHenry2017 wrote:I’m new to this forum so I’m not sure if I am supposed to ask questions on here, but I need help. I don’t know how to solve this problem any help would be great. Thank You!!
You notice a horizontal outcrop of an unfolded stratum with a midline 50 meters below the top of a vertical cliff, with a thickness of 3 meters. After climbing to the top of the cliff to investigate further, you find another outcrop of the stratum on the flat clifftop, 2.6 meters wide.
61. What is the true thickness of this stratum in meters? (3)
62. How far is the midline of the second outcrop from the cliff edge in meters? (2)
Oh the answers are
61. 1.961.97 m
62. 43.343.4 m
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