What is rake in geography?
In structural geology, rake (or pitch) is formally defined as “the angle between a line [or a feature] and the strike line of the plane in which it is found”, measured on the plane. The three-dimensional orientation of a line can be described with just a plunge and trend.
What is the difference between pitch and rake?
rake is more confortable for computer programs, while pitch is easilly measured in the field. They are synonymous. In structural geology “pitch” is the new term for “rake”. Rake (r) is the clockwise angle of the slip vectors from the azimuth of the fault plane and it is measured on a fault plane.
What are the 3 types of folds?
There are three basic types of folds (1) anticlines, (2) synclines and (3) monoclines.
What are Foldings?
In structural geology, a fold is a stack of originally planar surfaces, such as sedimentary strata, that are bent or curved during permanent deformation. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds.
What is rake for?
A rake is a type of gardening or landscaping tool with a handle that ends in a head. You can use a rake for scooping, scraping, gathering, or leveling materials, such as soil, mulch, or leaves. Some rakes have flat heads; others have sharp metal tines that can break up compacted soil or rocks.
Where is a rake?
Terms are used to break down the various areas of a roof and a “rake” is one of many roof sections. The rake is not exactly on the roof. It is a term that describes the sloped sides of a gable end. The rake can be flat with no overhang, or it can overhang the gable end like an eave.
What is rake and plunge?
While plunge is the amount by which a line element departs from horizontality, usually therefore measured in a vertical plane containing the line element or linear feature, pitch or rake is that a line elemet makes with the strike of the plane in which it is contained and measured in this plane.
What is rake in a fault?
Rake – the direction the hanging wall moves during rupture, measured relative to the fault strike (between -180 and 180 decimal degrees).
What are the 5 types of folds?
Types of Folds
- Anticline: linear, strata normally dip away from axial center, oldest strata in center.
- Syncline: linear, strata normally dip toward axial center, youngest strata in center.
- Antiform: linear, strata dip away from axial center, age unknown, or inverted.
How do you identify a fold in geology?
- fold, in geology, undulation or waves in the stratified rocks of Earth’s crust.
- Folds are generally classified according to the attitude of their axes and their appearance in cross sections perpendicular to the trend of the fold.
What are the folds called biology?
Some regions of the protein chain coil up into slinky-like formations called “alpha helices,” while other regions fold into zigzag patterns called “beta sheets,” which resemble the folds of a paper fan. These two structures can interact to form more complex structures.
What are faults and folds?
Folds constitute the twists and bends in rocks. Faults are planes of detachment resulting when rocks on either side of the displacement slip past one another.