Test on Geological Fold Geometry and Characteristics
Geological Fold Geometry and Characteristics Explained
Test: Fold Geometry (Structural Geology)
20 questions
Question 1: A complete description of plunge requires only the angle of plunge to be fully understood.
A. Yes
B. No
Explanation: A complete description of plunge is given in the amount and direction of plunge. The angle of plunge alone is not sufficient for a complete description.
Question 2: The angle between the fold axis and the horizontal is called the wavelength of the fold.
A. Yes
B. No
Explanation: The study materials state that the angle between the fold axis and the horizontal is formed in the plunge (angle of plunge). Wavelength is defined as the distance measured between hinges on each side of the fold.
Question 3: The distance measured between hinges on each side of the fold represents the amplitude of a fold.
A. Yes
B. No
Explanation: The study materials define the distance measured between hinges on each side of the fold as the wavelength of a fold, not the amplitude.
Question 4: The angle between the fold axis and the horizontal is what defines the plunge of a fold.
A. Yes
B. No
Explanation: The study materials state that the angle between the fold axis and the horizontal is formed in the plunge (angle of plunge), which directly defines it.
Question 5: Is the amplitude of a fold measured by considering the line joining the two hinges on each side of the fold?
A. Yes
B. No
Explanation: The amplitude of height of a fold may be measured by taking half the distance from the hinge to the line joining the two hinges on each side of the fold.