Why are magnetic anomalies of continental crust so much more complicated than those of oceanic crust?
A) The continents are much older and thus have had more time for the minerals to become magnetized.
B) The continents contain abundant iron minerals,whereas the oceanic crust does not contain any iron minerals.
C) The continents contain a random orientation of minerals that become magnetized when they interact with the magnetic field.
D) The continents contain a complex distribution of igneous intrusions,lava flows,and iron-rich sediments.

Question

Quizplus · Accepted Answer

The complex distribution of igneous intrusions, lava flows, and iron-rich sediments in continental crust causes magnetic anomalies to be more complicated. Oceanic crust is relatively uniform and consistent in composition, with little variation in magnetic properties.

Why Are Magnetic Anomalies of Continental Crust So Much More