The magnetic anomalies represented on this map originate primarily in igneous and metamorphic rocks, in the Earth’s crust and possibly, uppermost mantle.

The first global map of magnetic peculiarities - or anomalies - on Earth has been assembled by an international team of researchers. Magnetic anomalies are caused by differences in the ...

Its software uses your phone’s built-in compass and measures the anomalies in the Earth’s magnetic field to pinpoint your location in a building with the accuracy ranging from 0.1 meter to 2 ...

Magnetic anomaly map of North America. The east coast of North America was once as wild as the West, with massive mountains rising between colliding tectonic plates, volcanoes belching lava and ...

Magnetic Anomaly Map (IMAGE) Naval Research Laboratory. Caption. The magnetic data are useful for calculating bulk estimates of the magnetic properties of the local rocks and the depth to the ...

These anomalies, first detected during the Apollo 15 and 16 missions in the 1970s, are thought to be remnants of the moon's ancient magnetic shield, which likely disappeared billions of years ago ...

A map of the Earth showing the present-day deviation from expected magnetic field direction. Strong deviations are in yellow-orange, and little deviations are in blue. The star is Saint Helena, which ...

Magnetic anomalies. In total, the maps cover around 21 square miles (55 square kilometers) and account for about 68 percent of the lake’s floor.

Lake Rotorua, which sits at the heart of a dormant volcano and is the setting for one of New Zealand's most famous Māori love stories, has been mapped in detail for the 1st time.

The World Digital Magnetic Anomaly Map (WDMAM) is available through the Commission for the Geological Map of the World. The magnetic signature of the Earth's crust has been measured for many decades ...