What is the difference between dip and strike?
DIP is the acute angle that a rock surface makes with a horizontal plane. STRIKE is the direction of the line formed by the intersection of a rock surface with a horizontal plane. Strike and dip are always perpendicular to each other on a map. On a fold, the AXIS is the ridge or plane of sharpest folding.
What is the difference between strike direction of dip and angle of dip?
What is the difference between strike, direction of dip, and angle of dip? Strike – The compass direction of a line formed by the intersection of an inclined plane (such as a bedding plane) with a horizontal plane. Angle of dip – A vertical angle measured downward from the horizontal plane to an inclined plane.
What does open along strike mean?
A company press release may say that a zone of mineralization is open along strike. This means that exploration to date has not found the end of the mineralization. More of it may be discovered along the strike of the known zone.
What is the purpose of strike and dip?
Measurement of strike and dip (i.e., the attitude of rock layers or other planar geologic features) helps geologists construct accurate geologic maps and geologic cross-sections. For example, data on rock attitudes helps delineate fold structures in layered rocks.
How do you convert a strike to dip to azimuth?
If a strike line is parallel to the East-West direction use N90E or N90W as a quadrant (both are equivalent), or 090 or 270 for azimuth. The dip of a plane is defined as the angle of inclination of the plane measured in a vertical plane perpendicular to the strike line.
How do you calculate true dip?
True dip can be calculated from apparent dip using trigonometry if you know the strike. Geologic cross sections use apparent dip when they are drawn at some angle not perpendicular to strike. To resolve true dip and thickness, look at two cross sections as close to 90 degrees apart as possible.