The Edge Between a Dark Shadow and an Illuminated Checkerboard

question 58

Multiple Choice

 The edge between a dark shadow and an illuminated checkerboard is a(n) _____.

• A) reflectance edge
• B) illumination edge
• C) ratio edge
• D) Ishihara border

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Definitions:

Horst And Graben

Geological features formed by the movement of the earth's crust, with a horst being a raised fault block and a graben being a lowered block, creating distinctive landscapes.

Footwall

The wall rock beneath an inclined fault.

Asymmetric Syncline

An asymmetric syncline is a fold in sedimentary layers that is uneven or lopsided, with one side of the fold having a gentler slope than the other.

Asymmetric Anticline

A fold in sedimentary layers that has unequal slopes on either side, typically illustrating differential stresses during its formation.