Line-length restoration - a demonstration

[gmra]

Bravo, excellent basin knowledge for future Structural Geologist

[wrobs]

Hi Rob, thanks for using this (my) section, and great demo of doing it with pen and paper rather than on a screen! One comment I’d make is that when you go about doing it in the real case, you have to treat the upper competent unit first as it is where the surface data come from. Then the shortening can be applied to the lower competent unit. This means that the eroded part in the anticline needs to be addressed before you can restore the lower competent unit. And also that means that most of the uncertainty on the shortening comes from there. Still need to publish the full section that was corrected since this short paper 👍🏻 Thanks again

[katemat]

This is a great video - thank you for posting it. It is just what I’ve been looking for!

[concretemathematics]

Thank you for showing me how to restore it.

[armgeo]

eventually I found it... thank you professor Rob..

[nawaz]

Thank you, Rob. I learned a lot today.

[mouadankach]

Thank you, @Rob Butler, for this great video. I have a question. I've seen a lot of videos that explain how to restore structures to an undeformed stage, assuming bed-length conservation. Most of these videos show the case of an inverted structure, but I've never seen a case of an extensional scenario. Is it possible?

[Martytalius]

This was so informative, Rob! Do you know where we could get a copy of this cross section?

[armgeo]

I have one more question about the restoration output.. what I observe from your technique, is the length of the layer in folding section has to be equal to the restored flat layer? or only proportional to horizontal 'pinned' distance on your drawing? as I saw (correct me if I'm wrong) you rotate the folding paper at each point of turning and constrained them to the final horizontal distance of the cross section, so the restoration section does not imply the actual 'stretched' layer length prior to deformation.. do I interpret the concept in wrong way??

thank you for your advice and answer professor...

best humbly regards....

~from your 'non academic' student in far away in Indonesia~

[nawaz]

Hello Rob, any thoughts on how to make the restoration template?

[katemat]

Hi Rob, if the whole of the cross section is deformed, can you use a loose line anywhere? Or is that only used where you find an area of undeformed layers?