Angle of Dip

Definition - What does Angle of Dip mean?

Angle of Dip, also known magnetic dip or magnetic Inclination is the angle made by the Earth’s magnetic field lines with the horizontal. The angle of dip varies from point to point at the earth's surface and provides information about the movement of the earth’s magnetic field. If the magnetic field points downward to the earth at any measurement point, it means that the angle of dip is positive. If the angle of dip is negative, the magnetic field points upwards.

Petropedia explains Angle of Dip

In geological field and field mapping, the angle of dip plays an important role. In the development of any geologic map, the angle of dip is considered without a degree sign. For any tilted bed, the dip helps in the providing the steepest angle of descent relative to a horizontal plane. The angle of dip is represented between zero degrees to 90 degrees (without a degree sign). The direction where it points is also represented (N, S, E, W) with rough direction in which the bed is dipping downwards.

Planar planes such as, sedimentary bedding, faults and fractures, cuestas, igneous dikes and sills, metamorphic foliation and any other planar feature in the earth can also be described by strike and angle of dip. Here, "plunge" is the angle of dip and "trend" is analogous to the dip direction value.

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