Scientists Reveal Gondwana's Size After 550 Million Years
A recent scientific study has revealed that the ancient continent of Gondwana was much larger than previously believed. It covered approximately 80% of the landmass on Earth more than 500 million years ago, rather than the earlier estimates of 64%. Researchers analyzed over 25,000 rocks and employed geochemical and isotopic fingerprinting techniques to identify parts of the crust associated with Gondwana. The areas linked to it included regions now occupied by India, Africa, South America, Australia, Antarctica, Madagascar, as well as parts of Asia. The findings show that portions of the Asian crust, especially from India, China, and Kazakhstan, were connected to Gondwana, even though they were previously thought to be part of oceans or island chains. These results are significant because they classify Gondwana among the major supercontinents, covering more than three-quarters of the land area. This redefines our understanding of its size and influence on the environment and oceans at that time, and possibly relates to the emergence of diverse life during the Cambrian explosion. The study confirms that tectonic processes and collisions resulted in parts of Gondwana's ancient boundaries becoming buried, making them invisible on the surface today. It enhances our understanding of continental evolution and Earth's geological history.
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