Question

a method that relies on the earth's magnetic field to provide a date for a fireplace, hearth or burned area. When exposed to high temperatures, rock or clay areas that contain iron-bearing minerals retain remnant magnetism from the last time those areas were exposed to high heat.

Answer 1

Paleomagnetic dating is a method that relies on the Earth's magnetic field to determine the age of artifacts or geological features. It involves measuring the remnant magnetism acquired by the materials when exposed to high temperatures, as well as the presence of radioactive elements in the artifact.

Step-by-step explanation:

The method described in the question is known as paleomagnetic dating, which is a technique used to determine the age of artifacts or geological features by measuring the remnant magnetism they acquired when exposed to high temperatures. The magnetic minerals within the materials align themselves with Earth's magnetic field, and this alignment can be used to calculate the age of the artifact or feature. Furthermore, radioactive elements that have accumulated in the artifact since the last high-temperature event can be used to calculate its age as well.