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:4/23/2014)... a newly coined term for novels and films which focus ... of Copenhagen shows how these fictions serve as a mental ... climate change and imagine other living conditions. , "Global ... the atmosphere; it is also a cultural phenomenon in which ... the films we see. And there are so many of ...
(Date:4/23/2014)... at the University of Houston (UH) is working to ... His work is supported by a $1.8 million grant ... Blood transfusions save millions of lives every year. They ... for instance, routine surgeries would become life threatening. This ... that transfusions of red blood cells stored in a ...
(Date:4/22/2014)... There,s a new secret to get your child to behave ... , A new Cornell study published in Eating Behaviors ... they had to bite with their front teeth such as ... rowdier than when these foods had been cut. ... as aggressive toward other kids," said Brian Wansink, Professor and ...
Breaking Biology News(10 mins):Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3UH biomedical engineer works to make blood transfusions safer 2UH biomedical engineer works to make blood transfusions safer 3Biting vs. chewing 2
(Date:1/15/2014)... January 15, 2014 More than 5 ... about 1 in 3 seniors will die with Alzheimer’s ... These jaw-dropping figures have shocked many Americans into looking ... help prevent these tragic age-related cognitive disorders. Jonathan Weisman, ...
(Date:1/15/2014)... 2014 DTS Language Services, Inc . ... Portal for Life Science organizations who need document translations. ... matter of their documents in advance with a selection of ... of translations, often a critical factor in clinical and scientific ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of Notched Sound ... Patients listen to sound therapy that is tailor-made for ... to months, their tinnitus volume decreases. , AudioNotch has previously ... Notched White Noise. Now, AudioNotch is pleased to announce to ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
Breaking Biology Technology:Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2DTS Improves Efficiency for Life Science Document Translations 2Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2
Cached News: