Question

question 6 (0.83 points)
which factor can be used to identify the orientation and original latitude of an ancient igneous rock when it first formed?
the density and crystalline structure of the mineral magnetite
the density and crystalline structure of the mineral quartz
none of these
the density and crystalline structure of the mineral calcite
the direction of the magnetic field of recorded within the mineral quartz
the direction of the magnetic field recorded within the mineral calcite

Explanation:

Magnetite is a magnetic mineral that forms in igneous rocks. As igneous rocks cool, magnetite crystals align with Earth's magnetic field at the time of formation, recording both the field's orientation (for rock orientation) and the paleolatitude (from the field's inclination). The other minerals listed (quartz, calcite) are not magnetic and do not record paleomagnetic data, and density/crystalline structure does not preserve this geographic information.

Answer:

none of these