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:
TAG: billion year old surprise Earth had strong magnetic field

(Date:4/1/2015)... 2015   Medisafe ™, the leading global medication ... iOS and Android smartphones and tablets, ... the platform to allow patients to track and correlate ... time, patients will be able to visualize in real-time ... biometrics, such as glucose levels and blood pressure. ...
(Date:3/30/2015)... , Mar. 26, 2015 Research and Markets ... of the "Global Gesture Recognition Market in Automotive ... The analysts forecast the Global Gesture Recognition market in ... over the period 2013-2018. Gesture recognition is ... to different gestures of an individual. Gesture recognition technology ...
(Date:3/24/2015)... Mar. 24, 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ... Biometrics - Global Strategic Business Report" report to their offering. ... Voice Biometrics in US$ Thousands by the following Segments: Face Biometrics, ... US, Canada , Japan , ... Middle East & Africa , ...
Breaking Biology News(10 mins):Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
(Date:4/21/2015)... 21, 2015 Progyny, Inc., the new ... announced that it has secured additional capital from investors ... SR One and Merck Serono Ventures. The funding will ... the best fertility outcomes by aligning science, technology, clinics ... marketplace for families seeking fertility solutions and we are ...
(Date:4/20/2015)... 2015 Stent retriever thrombectomy, an endovascular ... the brain reduced disability after stroke, according to ... President of the Society of Vascular and Interventional ... giant step forward that will change the way ... said Jovin, who is associate professor of Neurology ...
(Date:4/20/2015)... PointCross Life Sciences today announced a strategic ... Big Data and globally accessible environment for genomic interpretation ... of clinical trials and nonclinical studies. This platform will ... stratified patient selection and ex post analysis ... Highlighting the timing of this partnership, Dr. ...
(Date:4/20/2015)... 2015 Sinovac Biotech Ltd. (Nasdaq: SVA), a ... its unaudited financial results for the fourth quarter and ... Quarter 2014 Financial Highlights(Compared to the fourth quarter 2013) ... decrease of 11.4% from $22.9 million in the prior ... H5N1 pandemic influenza vaccine of $0.1 million in the ...
Breaking Biology Technology:Announcing Progyny: Combining Best-in-Class Clinical Solutions with Consumer Expertise 2SVIN President Tudor Jovin, MD, Co-Leads Groundbreaking Stroke Study In The New England Journal Of Medicine 2SVIN President Tudor Jovin, MD, Co-Leads Groundbreaking Stroke Study In The New England Journal Of Medicine 3PointCross Life Sciences and InterpretOmics partner for Clinical and Genomic Biomarker Management for Drug Development 2Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 2Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 3Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 4Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 5Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 6Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 7Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 8Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 9Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 10Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 11Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 12Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 13Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 14Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 15Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 16Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 17Sinovac Reports Unaudited Fourth Quarter and Full Year 2014 Financial Results 18
Cached News: