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Methods devised for finding mineral or hydrocarbon deposits can also be used in other areas such as monitoring environmental impact, imaging subsurface archaeological sites, ground water investigations, subsurface salinity mapping, civil engineering site investigations and interplanetary imaging.Magnetometric surveys can be useful in defining magnetic anomalies which represent ore (direct detection), or in some cases gangue minerals associated with ore deposits (indirect or inferential detection).The most direct method of detection of ore via magnetism involves detecting iron ore mineralisation via mapping magnetic anomalies associated with banded iron formations which usually contain magnetite in some proportion.Skarn mineralisation, which often contains magnetite, can also be detected though the ore minerals themselves would be non-magnetic.You can find much more information about your privacy choices in our privacy policy.Even if you choose not to have your activity tracked by third parties for advertising services, you will still see non-personalized ads on our site.

This limitation in areal extent is the reason why seismic reflection techniques are so popular; they provide a method for interpolating and extrapolating well log information over a much larger area. These are Defender Database Subscriptions for Max 360, Red Line EX, Max2, Max, Escort i X, 9500ix, i Q, 9500ci, or 8500ci Plus.Please Note: Once a database subscription is ordered, we will forward to you, via email, an activation code within two business days.Similarly, magnetite, hematite and often pyrrhotite are common minerals associated with hydrothermal alteration, and this alteration can be detected to provide an inference that some mineralising hydrothermal event has affected the rocks.Gravity surveying can be used to detect dense bodies of rocks within host formations of less dense wall rocks.

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