Earth's churning mantle may have created the Great Unconformity
Explaining the Great Unconformity, where Cambrian deposits sit on top of older rocks.
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Explaining the Great Unconformity, where Cambrian deposits sit on top of older rocks.
<p>Chair of National Gallery’s First Nations advisory group says the technology is undermining artists’ agency and the authenticity of their work</p><ul><li><p>Get our <a href="https://www.theguardian.com/email-newsletters?CMP=cvau_sfl">breaking news email</a>, <a href="https://app.adjust.com/w4u7jx3">free app</a> or <a href="https://www.theguardian.com/aust
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