Blog

The boundary surface between two stratigraphic formations is called a: 

The earthquake that occurred when the asteroid/comet hit earth and wiped out the dinosaurs was a magnitude 12.

If you equate all Earth history to one calendar year, the history of our species (Homo sapiens) would occupy:

In a “nonconformity” the rock layers are parallel above and below the unconformity.

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: