Geologic Mapping C

Post by **UTF-8 U+6211 U+662F** » Tue Apr 16, 2019 7:46 pm

What's the difference between a normal and reverse fault?

Giantpants · Post by **Giantpants** » Thu Apr 18, 2019 9:41 am

UTF-8 U+6211 U+662F wrote:What's the difference between a normal and reverse fault?

Answer (Click to Show Hidden Text)

Normal fault sees the hanging wall move down relative to footwall and is formed by tensional stress, but reverse fault is hanging wall moving up, and is formed by compressional

Post by **UTF-8 U+6211 U+662F** » Sun Apr 21, 2019 6:30 pm

Giantpants wrote:
UTF-8 U+6211 U+662F wrote:What's the difference between a normal and reverse fault?
Answer (Click to Show Hidden Text)
Normal fault sees the hanging wall move down relative to footwall and is formed by tensional stress, but reverse fault is hanging wall moving up, and is formed by compressional

Yep (Click to Show Hidden Text)

FUN and FDR- footwall up is normal, footwall down is reverse

Your turn!

Giantpants · Post by **Giantpants** » Sun Apr 21, 2019 11:09 pm

Alright...

1. What is a recumbent fold?
2. What is a slickenline and how is it formed?
3. How can you tell if a fold is overturned on a geologic map?
4. Describe how magma forms at subduction zones.

SciolyMaster · Post by **SciolyMaster** » Thu May 23, 2019 3:39 pm

Giantpants wrote:Alright...

1. What is a recumbent fold?
2. What is a slickenline and how is it formed?
3. How can you tell if a fold is overturned on a geologic map?
4. Describe how magma forms at subduction zones.

Answers (Click to Show Hidden Text)

1. a fold with a horizontal axial plane, i.e. turned on its side
2. idk, something to do with folds
3. the bedding around it has their strikes and dips represented by the overturned bedding symbol
4. flux melting: addition of water from the ocean lowers the rock's melting point, allowing it to melt as it subducts into the mantle

Post by **UTF-8 U+6211 U+662F** » Thu May 23, 2019 4:05 pm

SciolyMaster wrote:
Giantpants wrote:Alright...

1. What is a recumbent fold?
2. What is a slickenline and how is it formed?
3. How can you tell if a fold is overturned on a geologic map?
4. Describe how magma forms at subduction zones.
Answers (Click to Show Hidden Text)
1. a fold with a horizontal axial plane, i.e. turned on its side
2. idk, something to do with folds
3. the bedding around it has their strikes and dips represented by the overturned bedding symbol
4. flux melting: addition of water from the ocean lowers the rock's melting point, allowing it to melt as it subducts into the mantle

Answer for 2 (Click to Show Hidden Text)

Smooth, polished surface formed by the scraping of a fault

Post by **BennyTheJett** » Thu May 23, 2019 5:57 pm

UTF-8 U+6211 U+662F wrote:
SciolyMaster wrote:
Giantpants wrote:Alright...

1. What is a recumbent fold?
2. What is a slickenline and how is it formed?
3. How can you tell if a fold is overturned on a geologic map?
4. Describe how magma forms at subduction zones.
Answers (Click to Show Hidden Text)
1. a fold with a horizontal axial plane, i.e. turned on its side
2. idk, something to do with folds
3. the bedding around it has their strikes and dips represented by the overturned bedding symbol
4. flux melting: addition of water from the ocean lowers the rock's melting point, allowing it to melt as it subducts into the mantle
Answer for 2 (Click to Show Hidden Text)
Smooth, polished surface formed by the scraping of a fault

Answer for 4 (Click to Show Hidden Text)

The subducting plate melts and upwells through the crust, which can often produce volcanoes.

Post by **UTF-8 U+6211 U+662F** » Thu May 23, 2019 6:02 pm

BennyTheJett wrote:
UTF-8 U+6211 U+662F wrote:
SciolyMaster wrote:
Answers (Click to Show Hidden Text)
1. a fold with a horizontal axial plane, i.e. turned on its side
2. idk, something to do with folds
3. the bedding around it has their strikes and dips represented by the overturned bedding symbol
4. flux melting: addition of water from the ocean lowers the rock's melting point, allowing it to melt as it subducts into the mantle
Answer for 2 (Click to Show Hidden Text)
Smooth, polished surface formed by the scraping of a fault
Answer for 4 (Click to Show Hidden Text)
The subducting plate melts and upwells through the crust, which can often produce volcanoes.

Wait isn't that the same thing as the other person's answer

Post by **BennyTheJett** » Thu May 23, 2019 6:05 pm

UTF-8 U+6211 U+662F wrote:
BennyTheJett wrote:
UTF-8 U+6211 U+662F wrote:
Answer for 2 (Click to Show Hidden Text)
Smooth, polished surface formed by the scraping of a fault
Answer for 4 (Click to Show Hidden Text)
The subducting plate melts and upwells through the crust, which can often produce volcanoes.
Wait isn't that the same thing as the other person's answer

Oof, my bad. Didn't see the answers he gave.

Giantpants · Post by **Giantpants** » Tue May 28, 2019 6:06 am

BennyTheJett wrote:
UTF-8 U+6211 U+662F wrote:
BennyTheJett wrote:
Answer for 4 (Click to Show Hidden Text)
The subducting plate melts and upwells through the crust, which can often produce volcanoes.
Wait isn't that the same thing as the other person's answer
Oof, my bad. Didn't see the answers he gave.

Looks good to me. Your turn?

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