Paleomagnetism Flashcards
1
Q
How is the Magnetic Field Recorded in Rocks?
A
Small magnetite crystals in a cooling lava flow act like tiny compass needles, preserving a record of the Earth’s magnetic field when the lava solidifies.
2
Q
Describe Seafloor Magnetic Anomalies in the Context of Seafloor Spreading
A
A variation in strength of Earth’s Magnetic Field caused by Magnetism in Rocks of the Ocean Floor
3
Q
What is Inclination?
A
The angle that the geomagnetic field is titled with respect to the surface of the Earth.
4
Q
What is Declination?
A
The deviation of the compass from the True North
