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The time it takes for one quarter of a group of a radioactive element’s isotopes to decay is called the “half life.”

Identify the FALSE statement. Radiometric dating:

Identify the structure that makes this pattern of rock layers on the ground surface: parallel stripes, showing bilateral symmetry across a mid-line (hinge), with rock getting older as you move outward from the hinge. 

In this study radiation damage in zircon crystals are examined in order to:

What type of fault does the diagram show?Click to view larger image.

Brittle deformation:

The deformational process in which mineral grains behave like plastic and, when compressed or sheared, become flattened or elongate without cracking or breaking is “brittle deformation.”

If you see small, angular fragments of shattered rock along a linear boundary between two masses of rock, you must be looking at:

Which of the following statements is FALSE? This diagram showsClick to view larger image.

You’re looking at a fault trace in the field. You observe a polished surface, with linear grooves on it, and fine powder along it. In more technical terms, what are you seeing?