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Climate change: A small green rock's warning about our future

BBC News
image copyrightChristine Siddoway
image captionAn extraordinary journey: The atomic make-up of small crystals in the rock reveals its origin
It s an unassuming rock, greenish in colour, and just over 4cm in its longest dimension. And yet this little piece of sandstone holds important clues to all our futures.
It was recovered from muds in the deep ocean, far off the coast of modern-day West Antarctica.
The scientists who found it say it shouldn t really have been there.
It s what s called a dropstone, a piece of ice-rafted debris.
It was scraped off the White Continent by a glacier, carried a certain distance in this flowing ice, and then exported and discarded offshore by an iceberg. ....

Amundsen Sea , Christine Siddoway , International Ocean Discovery Program , Colorado College , White Continent , Ellsworth Mountains , Joides Resolution , West Antarctic Ice Sheet , ஏமந்‌ட்ஸெந் கடல் , சர்வதேச கடல் கண்டுபிடிப்பு ப்ரோக்ர்யாம் , கொலராடோ கல்லூரி , வெள்ளை கண்டம் , மேற்கு அண்டார்டிக் பனி தாள் ,

Climate change: A small green rock's warning about our future

Climate change: A small green rock's warning about our future
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Amundsen Sea , Christine Siddoway , International Ocean Discovery Program , Colorado College , White Continent , Ellsworth Mountains , Joides Resolution , West Antarctic Ice Sheet , ஏமந்‌ட்ஸெந் கடல் , சர்வதேச கடல் கண்டுபிடிப்பு ப்ரோக்ர்யாம் , கொலராடோ கல்லூரி , வெள்ளை கண்டம் , மேற்கு அண்டார்டிக் பனி தாள் ,