Dec

10

 A structural Geoology Course given by UF Professor Channel 28 years ago was quite a challenging one to pass. It's a good field to study and pursue though if you like to travel and hike in the Alps (where many classical exposures are present) and drink Gold and Kirschwasser in stuffed leather chairs by a warm fire.

Structural geology can involve complicated field detective work in order to reconstruct the time sequence of various stresses and strains placed on rocks in 3 dimensions. There are all sorts of notations…S1, S2, F1, F2 etc. to denote the first stress direction, the folding direction and on and on. Often fossils in the rock strata in question are looked at to determine what stresses have distorted their known original shape.

It would be like someone handing you a penny flattened on a railroad track and you trying to decide the amount and direction of the forces involved that caused the distortion of Lincoln's profile.

Some of the most unusual, colorful and esoteric vocabulary has been developed to describe various, geological structural features. A visual classification scheme has developed that tries to account for the probable orgins of landscape features.

I suppose various economic outcomes, somewhat predictable structural patterns and "landscapes" develop from known inputs and stresses (interest rates, monetary policies, currency rates, etc) over time even if more ephemeral than the geological ones.

But what to make of this wonderful example of "chocolate tablet boudinage". How would you determine the original competency of the rocks and then the stress field and timing of those forces that created it?

Structural geologists have sometimes used pizzas to explain the type of reasoning needed to unravel the sequence of events leading to deformation.


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