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Calcimator

Strike and Dip Calculator

Calculate apparent dip from true dip and the angle between the strike direction and cross-section line.

Inputs

Results

Apparent Dip

40.89°

True Dip45°
Strike-Section Angle60°
True/Apparent Thickness Ratio0.7071
How to Use This Calculator
  1. Enter the True Dip in degrees measured perpendicular to strike using a Brunton compass.
  2. Enter the Angle Between Strike and Cross-Section direction for the profile you are constructing.
  3. Review the Apparent Dip — always less than true dip unless the section is perpendicular to strike.
  4. Check True/Apparent Thickness Ratio to correct measured thicknesses in non-perpendicular sections.
  5. Use the result to accurately portray bedding attitudes on geological cross-sections.
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Formula

tan(apparent dip) = tan(true dip) × sin(angle between strike & section)

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