Magnetic Observation Data
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Magnetic geophysical surveys are carried out to understand magnetic properties of subsurface rocks.  Scientists can interpret variations in measurements of Earth's magnetic field from place to place across the surface of the Earth in terms of corresponding changes in rock magnetism within the subsurface. Geophysicists work with geologists to relate these magnetic changes to known rock types in the area and thus provide constraint on models of the subsurface (for example, geologic cross-sections). A magnetic point is a place where a magnetic measurement was made on the Earth's surface.</SPAN></SPAN></P></DIV></DIV></DIV>
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nan
nan