Navigation Links
Antarctica: The story behind the ice

The influence of ocean currents in climate change and the story behind Antarctica’s icy ambience, is unraveled by ancient fish teeth// that seem to be holding the clue.

An element pretty unheard of and extremely rare, identified in the tiny fish teeth has offered a clue to the University of Florida geologists in estimating the period when the passage between Atlantic and Pacific might have opened up. This has happened obviously millions of years ago, during warmer times, when ocean current was formed around the pole and is thought to have contributed in great measure to Antarctica’s metamorphosis from a forested continent to an icy one.

Fish teeth contain a mineral called apatite, which absorbs the neodymium on the seafloor. This is probably the reason why UF researchers chose to study fish teeth. The geologists obtained the teeth from sedimentary cores, in the South Atlantic Ocean. Measurements using a technique called thermal ionization mass spectrometry revealed the teeth neodymium had a signature of the Pacific, indicating at least a surface connection between the oceans. The presence of neodymium with a Pacific signature in the deep Atlantic suggests that Pacific surface waters flowed into the South Atlantic, where they cooled and sank.

According to the Geologists, the opening of passage could have caused the plunge in temperatures because the circumpolar current would have isolated Antarctica from warm subtropical water carrying heat from the tropics. In addition, the circumpolar current sets up conditions leading to upwelling of cold, nutrient-rich water. This in turn may have spurred the growth of algae and higher forms of biological life, which consumed carbon dioxide, reducing levels and contributing to cooling the continent's climate.

Source: Eureka Alet
'"/>




Page: 1

Related medicine news :

1. Robots craft medical history
2. Breast cancer in younger women strongly linked to family history
3. FDA asks the doctors to take the patients’ dietary history before prescribing medication
4. Three Sisters Have One Baby and Make History
5. Family history of alcoholism influences reaction to advice
6. A cheesy story!!!
7. Skin Cancer History Puts Post-menopausal White Women At Risk For Melanoma
8. CT Scan A Must For Smokers With Family History Of Lung Cancer
9. Reverse Heart Transplant Surgery On A Little Girl Makes History
10. Understanding the History of HIV Infection Is Vital To Develop a Vaccine
11. Learn From a Leader: Smitherman shares a personal story about his battle with drugs
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... ... cutting edge technology to revolutionize the emergency ambulance transport experience for the millions ... aware of how Uber has disrupted the taxi industry through the use of ...
(Date:6/26/2016)... ... ... PawPaws brand pet supplements owned by Whole Health Supply is ... of felines. The formula is all-natural and is made from Chinese herbs that have ... Kidney Support Supplement Soft Chews are Astragalus Root Extract and Rehmannia Root Extract ...
(Date:6/25/2016)... Miami, FL (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton ... Plant City Observer , brings up a new, often overlooked aspect of head lice: ... The closing for fumigation is not a common occurrence, but a necessary one in the ...
(Date:6/25/2016)... ... 2016 , ... On Friday, June 10, Van Mitchell, Secretary of the Maryland ... iHire in recognition of their exemplary accomplishments in worksite health promotion. , The Wellness ... & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was one of ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Marcy was in a crisis. Her son ... lash out at his family verbally and physically. , “When something upset him, he couldn’t ... would use it. He would throw rocks at my other children and say he was ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Pa. , June 23, 2016 Bracket ... will launch its next generation clinical outcomes platform, Bracket eCOA ... Meeting held on June 26 – 30, 2016 in ... the first electronic Clinical Outcome Assessment product of its kind ... Booth #715. Bracket eCOA 6.0 is a flexible ...
(Date:6/23/2016)... and INDIANAPOLIS , June 23, 2016 ... Lilly Diabetes Tomorrow,s Leaders Scholarship is any indication, the ... announced today online at www.diabetesscholars.org by the ... diabetes stand in the way of academic and community ... Foundation,s scholarship program since 2012, and continues to advocate ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening to conquer ... in advanced audiology and hearing aid technology, has today ... world,s first internet connected hearing aid that opens up ...      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ) , ... , TwinLink™ - the first dual communication ...
Breaking Medicine Technology: