HOME >> BIOLOGY >> NEWS
3.2 billion-year-old surprise: Earth had strong magnetic field

asure how much magnetism these individual particles contained.

The data suggest that the ancient magnetic field strength was at least 50 percent of the present-day field, which typically measures 40 to 60 microteslas, says Tarduno. This means that a magnetosphere was definitely present, sheltering the Earth 3.2 billion years ago.

To further ensure his readings were accurate, Tarduno also checked the alignment of the magnetism in the particles, which record the polarity of the Earths field at that time and location. By comparing the polarity to that of other samples of similar age and location, Tarduno could ensure that his measurements were not likely from later geological heating, but truly from 3.2 billion years ago.

Tarduno is now pushing back in time to 3.5 billion-year-old rocks to further investigate when the Earths inner core first formed, giving new insights into early Earth processes that also may have had an effect on the atmosphere and the development of life on the planet.


'"/>

Contact: Jonathan Sherwood
jonathan.sherwood@rochester.edu
585-273-4726
University of Rochester
4-Apr-2007


Page: 1 2 3

Related biology news :

1. What we can learn from the biggest extinction in the history of Earth
2. Chickens also orient themselves by the Earths magnetic field
3. Scientists ponder plant life on extrasolar Earthlike planets
4. NASA-funded robotic sub makes final dive to reach bottom of Earths deepest sinkhole
5. ESA presents the sharpest ever satellite map of Earth
6. Prototype space probe prepares to explore Earths deepest sinkhole
7. Worlds oldest rocks show how Earth may have dodged frozen fate of Mars
8. Climate change only one symptom of a stressed planet Earth
9. Researchers identify a heartbeat in Earths climate
10. Symposium Changes on Earth honors Yale Geologist Robert Berner
11. The Milky Way shaped life on Earth

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... -- Research and Markets has announced the addition of ... offering. ... market to grow at a CAGR of 30.37% during the period ... has been prepared based on an in-depth market analysis with inputs ... growth prospects over the coming years. The report also includes a ...
(Date:4/5/2017)... , April 5, 2017 Today ... announcing that the server component of the HYPR platform ... for providing the end-to-end security architecture that empowers biometric ... HYPR has already secured over 15 million users ... including manufacturers of connected home product suites and physical ...
(Date:3/30/2017)... 30, 2017 The research team of The ... (3D) fingerprint identification by adopting ground breaking 3D fingerprint minutiae recovery ... of speed and accuracy for use in identification, crime investigation, immigration ... ... A research team ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... September 21, 2017 , ... Today, BioPharma Institute, a ... the addition of 5 new courses to its prospectus. These include the eagerly-awaited ... CFR Part 11 on Electronic Records and Electronic Signatures (Part 11 of Title ...
(Date:9/20/2017)... ... September 20, 2017 , ... The award-winning producers behind the ... feature new innovations aimed at helping farmers solve the problem of nitrogen loss. ... Tuesdays at 8:30aET on RFD-TV. Check your local listings for more info. ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... Huron Digital Pathology , a provider of whole slide imaging solutions, are hosting ... . The workshop, entitled “Successfully Deploying a Best-in-Class Strategy for Digital Pathology,” will ...
(Date:9/20/2017)... Aurora, Ohio (PRWEB) , ... September 20, 2017 ... ... automation, systems integration, and building management solutions, announced today the opening of an ... customers in Taiwan and the Greater China region, while developing new relationships in ...
Breaking Biology Technology:
Cached News: