▲ Up
 
21:39 25-06-2017
АКИpress CA-News Tazabek Turmush
ADVERTISE WITH US SUBSCRIBE
KazakhstanKyrgyzstanMongoliaTajikistanTurkmenistanUzbekistanWorld
POLITICSBUSINESSINCIDENTSSOCIETYCULTURESPORTANALYSISSCIENCE
Scientists play 'geological genealogy'
10:31, 17 March 2017, 1660
Twitterfacebookprint

AKIPRESS.COM - Scientists have tracked the "family history" of a rock back to some of the earliest times on Earth, reports BBC.

Researchers analysed the concentration and distribution of particular types of atoms in the granite to show it must have been recycled from something that existed 4.2 billion years ago.

This "parent rock" was very probably basalt of the sort produced on the ocean floor, they say.

The team reports its work in this week's Science Magazine.

With most rock on Earth being broken down by weathering or taken back into the planet's interior just a few hundred million years after production, there is very little, truly ancient material to look at.

Geological genealogy offers a very useful alternative in the circumstances, says Dr Jonathan O'Neil from the University of Ottawa, Canada.

"To put everything into perspective, the Earth is about 4.6 billion years old, and I would say that rocks that are 3.8 billion years and older - we can count them on the fingers of our hands.

"We have very limited places to learn something about the first billion years of Earth history. That's our challenge," he told the Science in Action programme on the BBC World Service.

Dr O'Neil and colleagues examined samples of rock from the "Canadian Shield", a swathe of territory moving east of Hudson Bay in Canada.


Full access to all news articles in English

1 month2000 somsubscribe
year20000 somsubscribe
These subscription fees are for private individuals only. Please contact us via phone +996 (312) 900-776 or email info@akipress.org for corporate subscription inquiries
Twitterfacebookprint
LATEST NEWS
20:14 Atambayev extends condolences to Chinese Xi over landslide leaving a lot of people missing19:59 China landslide leaves 120 missing in Sichuan18:25 Population of Kazakhstan nears 18 mln people — Nazarbayev18:06 Five arrested after Saudi security forces foil attack on Grand Mosque in Mecca17:29 Tatarstan President asks Kyrgyzstan to consider opening of Consulate General in Kazan17:20 Water level in most rivers of Kyrgyzstan about 179% of normal range17:13 ‘We didn’t raise this issue at all’ – Atambayev about reports on sending Kyrgyz troops to Syria16:39 'I've been very satisfied' – Atambayev after state visit to Russia15:58 Kyrgyz government provides aid to families of gas station explosion victims14:49 EBRD finances better street lighting in two cities in East Kazakhstan13:56 Bishkek hosts forum of education workers12:45 OSCE and UNODC offer training on countering terrorism financing in Kyrgyzstan12:37 "Kyrgyzstan and Kazakhstan, the two independent, sovereign states will never get trapped by Syrian crisis": FM Abdrakhmanov10:40 MPs present draft amendments allowing renting out of apartments in tourist zones10:30 Two citizens of Kyrgyzstan die in Moscow sewage well10:11 Number of illegally issued passports reduces in Kyrgyzstan in 5 years — General Prosecutor's Office09:53 Project on connecting renewable energy resources of Mongolia to regional network to be implemented09:31 Camden flats: Hundreds of homes evacuated over fire risk fears09:19 ‘Kyrgyzstan looking forward Tatarstan’s support of Taza Koom project’ – Atambayev09:00 Over 80% of Kyrgyzstanis including smaller number from Issyk-Kul region deliver biometrics — survey
© AKIpress News Agency - 2001-2017. All rights reserved
Republication of any material is prohibited without a written agreement with AKIpress News Agency. Any citation must be accompanied by a hyperlink to akipress.com.
Our address:
Moskovskaya str. 189, Bishkek, the Kyrgyz Republic
e-mail: english@akipress.org, akipressenglish@gmail.com;
Tel/Fax: +996(312)90-07-75