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User:DavidMP1/sandbox

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Homework 2

Part 1

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1a

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1b

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  • This page is on thin-skinned deformation which is when only the top layers of rock deform but the basement does not.

1c

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  • Another figure showing a cross section of how the upper rock deform while the basement stays the same would be useful to this article.

1d

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  • The grammer and writing are good but the article is fairly short and could go into more detail about how stacks and other structures form as a result of this deformation.

1e

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  • The photo is appropriate to the article but it would be better to have a cross section to show how the layers deform.

2a

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2b

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  • This page is on fold and thrust belts which occurs near orogenic events and often are a result of thin-skinned deformation.

2c

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  • This article could use more information on how the belt develops from orogenies.

2d

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  • The article is incredibly short but it was good to include a list of links to major examples of this structure across the world.

2e

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  • A figure showing how orogenic events give rise the fold and thrust belts would be helpful.

3a

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3b

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  • This page is on geologic folds which are often a byproduct of thin-skinned deformation.

3c

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  • More could probably be added to explain the Mechanics of folds

3d

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  • The written part of this page is of sufficient length to describe the subject and is well written.

3e

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  • The visual part of this page is very good with many different graphics and not much to improve upon but it could also use a diagram showing how types stress can lead to folding.

Part 2

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A

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  • The topic I would like to make a page for is thick-skinned deformation, what it means, and how it differs from thin-skinned deformation.

B

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  • The current article on this topic is very small and there is much more that can be said about it. Thick-skinned deformation frequently occurs during continental collisions and other mountain building events and models for it can explain many surface features of the earth.

C

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  • The page would start with a basic explanation of thick-skinned deformation and its differences from thin-skinned deformation, then talk about the types of processes that cause it and where they occur. The page would include a description of the type of structures that this type of deformation can form. The figure would be a basic drawing of the process of two plates colliding or the rise of plutonic bodies causing crustal deformation including the basement rock.