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Rock samples collected near the Antarctic volcano Mount Erebus, seen here in the distance, harbor fingerprints of Earth’s ancient magnetic field. A new analysis delves into discrepancies between these fingerprints and predictions from a long-standing approximation of the field. Credit: Hanna Asefaw

Antarctic Lava Yields Clues to Earth’s Past Magnetic Field

Geology Page - February 8, 2021

Map of the Earth showing the present-day deviation from expected magnetic field direction. The star is Saint Helena

South Atlantic anomalies existed 8 – 11 million years ago

Earth magnetic field. Credit: Carnegie Institution for Science

How does Earth sustain its magnetic field?

Earth’s geomagnetic field

Earth’s magnetic field can change 10 times faster than previously thought

Next to Prof. Oded Aharonson is the tri-axial Helmholtz Coil used to generate the magnetic field during the growing of the ice samples

The magnetic history of ice

Earth’s magnetic fields could track ocean heat

Geology Page - December 13, 2016

Marine sediments record variations in the Earth’s magnetic field

Geology Page - November 29, 2016

Uncovering Yellowstone’s subsurface mysteries

Geology Page - November 8, 2016

Magnetic oceans and electric Earth

Geology Page - October 4, 2016

Magnetic attraction helps explain the motion under the ocean

Geology Page - September 12, 2016

Using magnetic data: Researcher uncovers 340 million year-old oceanic crust in...

Geology Page - August 16, 2016

What did Earth’s ancient magnetic field look like?

Geology Page - June 25, 2016

Ironing out the mystery of Earth’s magnetic field

Geology Page - June 3, 2016

Just what sustains Earth’s magnetic field anyway?

Geology Page - June 2, 2016

Space mission first to observe key interaction between magnetic fields of...

Geology Page - May 13, 2016

Minerals reveal record of magnetic fields

Geology Page - April 23, 2016

Magnetic vortices defy temperature fluctuations

Geology Page - April 19, 2016

The moon thought to play a major role in maintaining Earth’s...

Geology Page - March 31, 2016

Young sun-like star shows a magnetic field was critical for life...

Geology Page - March 17, 2016

The ancient rotation of the Iberian Peninsula left a magnetic trace

Geology Page - March 4, 2016

Consistency of Earth’s magnetic field history surprises scientists

Geology Page - February 4, 2016

Getting Down to Earth with Space Hazards

Geology Page - January 9, 2016

Filling in gaps in the history of earth’s magnetic field

Geology Page - December 9, 2015

Developing New Rock Magnetic Tools to Drive Geoscience Research

Geology Page - December 8, 2015

Earth not due for a geomagnetic flip in the near future,...

Geology Page - November 24, 2015

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The fossilized remains of Dickinsonia found at the Nilpena Heritage site in Australia. Credit: Scott Evans / UCR

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