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How to calculate a fold axis using the beta and pi methods

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Dr. Graham B. Baird

How to calculate a fold axis using the beta and pi methods using a stereonet. This video assumes you are comfortable to plotting planes as great circles and as poles, which are covered in these videos:
• Plotting planar geologic structures a...
• Plotting planar geologic structures a...

posted by oogglasb5

Plotting planar geologic structures as great circles on a stereonet

Plotting planar geologic structures as great circles on a stereonet

Fold Geometry Bedding Attitudes Fleuty diagram P31 Stereonet

Fold Geometry Bedding Attitudes Fleuty diagram P31 Stereonet

Fold analysis using the stereonet

Fold analysis using the stereonet

Basic Brunton Operation

Basic Brunton Operation

Road Cut Slope Stability P28 Stereonet

Road Cut Slope Stability P28 Stereonet

Plotting planar geologic structures as poles on a stereonet

Plotting planar geologic structures as poles on a stereonet

Working out stress state from conjugate faults

Working out stress state from conjugate faults

Fold Geometry P29 Stereonet

Fold Geometry P29 Stereonet

Aggression and Scalping with the Grain

Aggression and Scalping with the Grain

Fold analysis using Rick Allmendinger's Stereonet 11

Fold analysis using Rick Allmendinger's Stereonet 11

Explanation of Stereonet Projection

Explanation of Stereonet Projection

Principal Stresses from Stereonet

Principal Stresses from Stereonet

Plotting linear geologic structures on a stereonet

Plotting linear geologic structures on a stereonet

How to determine principal stress axes from a fault using a stereonet

How to determine principal stress axes from a fault using a stereonet

Fold and Thrust Belts Part 1: Theory

Fold and Thrust Belts Part 1: Theory

Interpreting fold data on stereonets

Interpreting fold data on stereonets

Strike Lines to find Strike and Dip

Strike Lines to find Strike and Dip

Fold Axis and Interlimb Angle on Stereonet

Fold Axis and Interlimb Angle on Stereonet

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