Magnetic anomaly map: North sheet (1:625 000) [Flat Map]

Magnetic anomaly map: North sheet (1:625 000) [Flat Map]

Gravity and magnetic anomalies show small departures from the expected values of the earth's gravity and magnetic fields, caused by variations in the density and magnetisation of the rocks within the crust. These anomalies are used to determine concealed geological structure, including the depth and extent of sedimentary basins, depth to magnetic basement and location of concealed igneous bodies. On the broadest scale, they help to convey an understanding of the regional configuration of the Earth's crust and upper mantle. [Flat Map]

Format Flat Map

ISBN 9780751835137

Scale 1:625 000

Year Published 2007


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