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:3/7/2017)... , March 7, 2017 Brandwatch , the leading ... The Prince,s Trust to uncover insights to support its ... Trust. The UK,s leading youth charity will be using ... results and get a better understanding of the topics and issues ... ...
(Date:3/6/2017)... Calif. , March 6, 2017 ... and sales technology, today announced Predictive Sales Coach ... for infusing actionable sales intelligence into Salesforce. This ... automatically enable their sales organizations with deep knowledge ... that allow for intelligent engagement. Predictive Sales Coach ...
(Date:3/2/2017)... , March 2, 2017 Summary ... to better understand Merck KGaA and its partnering interests ... https://www.reportbuyer.com/product/3605601/ Description The Partnering Deals and ... the partnering activity of one of the world,s leading ... are prepared upon purchase to ensure inclusion of the ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... Calif. (PRWEB) , ... March 21, 2017 , ... ... on Kickstarter , more than tripling its goal and raising over $30,000 in ... vertical garden that grows nutritious veggies & herbs fast, easy, and affordably, anywhere. ...
(Date:3/22/2017)... ... March 21, 2017 , ... ... its innovative Quantum peristaltic pump with patented ReNu single-use (SU) cartridge technology. ... standard for high-pressure feed pumps in SU tangential flow filtration (TFF), virus ...
(Date:3/22/2017)... ... ... The Society for Immunotherapy of Cancer (SITC) strongly opposes the proposed budget ... year 2018 budget request. , This proposal calls for a reduction ... 20% of its total budget. If applied proportionally across NIH, funding for the National ...
(Date:3/22/2017)... N.J. and PETACH TIKVAH, Israel ... Inc. (NASDAQ: BCLI), a leading developer of adult stem ... Chaim Lebovits , Chief Executive Officer, will provide an ... Sachs Associates 2 nd Annual Neuroscience Biopartnering and ... at the New York Academy of Sciences. ...
Breaking Biology Technology:
Cached News: