Strike and Dip


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Strike and Dip

 

in geology, the characteristics of the position—or the elements of the bedding—of a layer of rock, the roof of a magmatic massif, vein, or other geological body, or such surfaces as the surface of a tectonic fault relative to the sides of the horizon and the horizontal plane.

The strike is a line formed by the intersection of the horizontal plane with the surface of a layer of rock or another geological body set in an inclined or vertical position. The direction of the strike is expressed by its azimuth. The dip is a line on the plane of a layer or another geological body that extends perpendicularly to the strike in the direction of the inclination of the layer, which is the line of greatest steepness. The orientation of the dip line is determined by its azimuth and dip angle. The azimuth is measured by a projection of the dip line on the horizontal surface, and the dip angle is formed by the dip line and the horizontal projection of the dip line.

Strike and dip are either measured by a dip compass or determined by geological maps, sections, boreholes, mine excavations, geophysical data, or the aerial photographs of layers.

A. E. MIKHAILOV

References in periodicals archive ?
3) Test the strike and dip extensions of the known mineralization; and
These intrusions strike and dip parallel to the stratigraphy and are the likely loci for gold mineralization on the Property.
The QK Zone structure and surrounding hanging wall and footwall zones near-surface occur approximately 100-200 metres due south of the M Zone and have a similar strike and dip to that of the M Zone structure.
Further work is required to interpret the strike and dip of the dyke zone.
On the Engagement Zone, two holes (both inclined at -60 degrees) were drilled on the same section, perpendicular to strike and dip of local stratigraphy.
The next phase of the project is to test the concept of high-grade underground mining and to prove vein continuity along strike and dip.
The diamond drill is currently starting hole R96-10 designed to further evaluate the strike and dip extensions of the significant gold intersections reported a few days ago in hole R96-06 in the shaft area.