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Harshvardhan Sharma posted an Question

October 29, 2020 • 18:17 pm

30 points

IIT JAM
Geology (GG)

How to find out if it's a normal fault or a reverse fault?

How to find out if it's a Normal fault or Reverse fault?

1 Answer(s)

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Darshan

since its a map view, there is no concept of normal and reverse
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Sajan sarthak

answered and rectified the mistake of normal fault also
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Sajan sarthak Best Answer

This can be either a sininstral or Reverse fault having Northern block upthrown. Sinistral because the fault norten block displacing left ward while the southern is rightward. High imagination required to know the pattern. If a inclined strata is cut by a fault and one of the block goes down then the downthrown block will have strata map (view) offsetting to opposite direction of dip. Please watch the figures best tried to make your imagination strong. and yes it's a reverse fault .I apologise for the mistake.
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Sir but answer given is both B,D(MSQ),I got how its sinistral but how it'll be a reverse fault?
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no problem 👍
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you understood Harsh
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i got it,can we say if the thickness given unchanged then it'll be reverse fault because normal fault will definitely change the thickness,is it a valid reason??
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No Harsh in any case the thickness will not change at all. the offset pattern you have to just see.
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one last question,what exactly are we referring by Thickness here, I can't imagine the thickness of fault properly
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ok,its bed
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yaa it's bed.
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got it sir thank you so much.😊
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