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Alexeev081 [22]
3 years ago
10

Paleomagnetism can be used to estimate the age of the seafloor because the magnetic field of Earth in the geologic past is _____

_______. a) unknown, but it is assumed to have been identical to today’s b) known to have been constant through geologic time, as seen by the remnant magnetization of iron-rich minerals in rocks c) known to have experienced numerous polarity reversals, as seen by the remnant magnetization of iron-rich minerals in rocks d) known to have been constant through time, on the basis of theoretical calculations
Geography
2 answers:
zhuklara [117]3 years ago
8 0

Answer:

known to have experienced numerous polarity reversals, as seen by the remnant magnetization of iron-rich minerals in rocks ( C )

Explanation:

Paleomagnetism is the study of the magnetic field found in sediments, rocks or other archaeological materials, most minerals found in these rocks and sediments lock in the direction of the magnetic field found in them also the intensity of the magnetic field plays an important role as well in the locking in of the direction of the magnetic field .

as with the question the archaeological material is the seafloor hence Paleomagnetism can be used to estimate the age of the seafloor due the study and function of Paleomagnetism

strojnjashka [21]3 years ago
6 0

Answer:

c) known to have experienced numerous polarity reversals, as seen by the remnant magnetization of iron-rich minerals in rocks.

Explanation:

Paleomagnetism is the study of the Earth's magnetic fields in sediment (rocks or other archaeological material). This can be used to estimate the age of sediment (or in this case, the seafloor) because it is known that the magnetic field of Earth experienced numerous polarity reversals. This allows is to employ such sequences as a chronologic tool. Paleomagnetism has also been a significant tool in the subjects of continental drift and plate tectonics.

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