Basic map interpretation - Lycoming County sheet

From The Shear Zone Channel. Follow along as Rob goes through the interpretation of the geological map of Lycoming County in #pennsylvania. We explore how outcrop patterns for sub-horizontal strata incised by river valleys contrast with those of folded strata. These insights are used to construct a sketch geological cross-section that is used to establish the stratigraphic succession in the area. #geology #stratigraphy #structuralgeology #crosssection

[@alvaronieves5352]

Hello Rob, as I've just graduated from my geology degree in Zaragoza, just wanted to thank you for your insightful work throughout these past years, as it has helped me immensely. I'll be glad to keep up with your videos in times to come.

[@robbutler2095]

Thanks! Congratulations on graduating - good luck with your next steps…..

[@alvaronieves5352]

@@robbutler2095 Now it's time for the masters degree :)

[@aijazalihalepoto9367]

A very insightful film regarding map interpretation. Dear sir your films are not only source of information, but these are also source of inspiration for all those, who are concerned with Structural Geology and Tectonics.

[@robbutler2095]

Thank you - glad you're enjoying the films

[@nabarupghosh2880]

Thank you for the video sir!

[@HamzehRezaei-dp7sc]

Thank you for your detailed explanation

[@lundysden6781]

Very nice job! It appears you have done this a few times. I'm good with stratigraphy but your ability to xsection folds is above average. As a teacher I know it helps to do it 5 times a day for 20yrs! Maybe slow down on a simpler map and show us again to help out those just starting out? I mean for those who are not structural geologists like me.

[@robbutler2095]

Check out the geological maps playlist for others

[@williamw7847]

Thanks for an interesting vlog. I was confused by the SW corner (eg at 17:30) - I didn't know if the structure was raised or formed a dip. There seemed to be few clues on the map - the main one seemed to be shading (with the san at top left). So you described the dip (I also note the order of layers to support this) - I also tried to see the limestone as an overlay, so the limestone overlying the sandstone could have been a repeat layer, especially looking at the stream zigzagging north through the Nippenose label on the map. Finally, I looked on Google maps to see the actual depression of that area.

[@robbutler2095]

Thanks for the question. The outcrops in Limestone area (Limestone township) on te map is the continuation of the antiform that we see in the line of the cross-section (in Armstrong area) - the patches are rather like peas in a pod - with a small saddle of sandstone between.... hope that's what you're after.

[@justmenotyou3151]

Art work with purpose.