The white granite of the Idaho Batholith near Boise, Idaho, contains dark gray xenoliths of metamorphic material. Which is older? How do you know?
A) Granite; the principle of superposition
B) Xenoliths; the principle of cross-cutting relations
C) Granite; the principle of unconformities
D) Xenoliths; the principle of inclusions
Question 2
The Mississippi River cuts through Silurian-aged dolomite between northwestern Illinois and eastern Iowa. Which is older? How do you know?
A) Dolomite;the principle of superposition
B) Mississippi; the principle of original horizontality
C) Dolomite; the principle of cross-cutting relationships
D) Mississippi; the principle of lateral continuity
White lion
Adolescent white lion in Kruger National Park, South Africa.
scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
Gray Matter Development over the Surface of the Cortex
A chest X-ray showing pneumonia characterized by the patch of gray-white areas.
White-Collar Crime