# sec_interp.core.utils.geology module

Geology Utilities Module.

Geological calculations and structural geology operations.

sec_interp.core.utils.geology.calculate_apparent_dip(true_strike: float, true_dip: float, line_azimuth: float) → float

  Convert true dip to apparent dip in section plane.

  The apparent dip is the inclination of a plane measured in a direction not perpendicular to the strike. In a vertical cross-section, the apparent dip depends on the angle between the strike of the plane and the azimuth of the cross-section line.

  Formula:

    tan(apparent_dip) = tan(true_dip) * sin(alpha)

    Where alpha is the angle between the strike of the plane and the direction of the cross-section (section azimuth). alpha = strike - section_azimuth

  Parameters:

    - true_strike – Strike of the geological plane (0-360 degrees).

    - true_dip – True dip of the geological plane (0-90 degrees).

    - line_azimuth – Azimuth of the cross-section line (0-360 degrees).

  Returns:

    Apparent dip in degrees. Positive values indicate dip, negative values might occur depending on quadrant but are typically normalized.