Rocks from the Grand Canyon accept been begin 13,500 km abroad in Australia. Source: Martin M303/Shutterstock
CENTRAL Arizona is a acceptable 13,500 kilometres from the Australian island of Tasmania. Being a third of the apple away, you wouldn’t anticipate the two would accept abundant in accepted in agreement of cartography – but you would be wrong.
Scientists in Tasmania accept begin age-old rocks that accept the aforementioned minerals and geochemical composition as some of the oldest bedrock layers begin in accustomed admiration of the world, the Grand Canyon.
While this seems perplexing, the two regions were absolutely allotment of one supercontinent about one billion years ago.
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Named Rodinia, this mega landmass is anticipation to accept independent all of today’s continental plates.
The research, appear in the account Geology, begin the rocks were age-old amid 1.1 and 1.2 billion years old and their geochemistry is added carefully accompanying to those in the Grand Canyon which dates aback a whopping 1.5 billion.
Discovery of the rocks will advice scientists bigger accept how the continents fit calm to anatomy Rodinia all those years ago.
“[This] cardboard shows that Tasmania holds the key to attached calm the tectonic cartography of the time,” Alan Collins at the University of Adelaide, Australia, told New Scientist. “It’s absolutely a acceptable articulation and tie that allows us to body abounding bowl models of the age-old Earth.”
The continental plates are consistently affective – although you’d be adamantine apprenticed to notice. Australia is currently affective north towards Asia by up to seven centimetres per year. Not absolutely lightning acceleration but cogent abundant for scientists to accept that addition supercontinent is in our future.
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In the aing 50 actor to 200 actor years, scientists accept all seven continents will already afresh be affiliated in a mega landmass alleged Amasia.
Rodinia is not the be abashed with Pangea, the best acclaimed and best contempo of planet Earth’s supercontinents.
The planet has had several of these over its 4.5-billion-year existence. The analysis of agnate fossils broadcast beyond the world, from South Africa, India and Australia, lent affirmation to the actuality of Pangea.
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