Tectonic history: into the deep freeze

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<blockquote class="wp-embedded-content" data-secret="FeaJ0anL2C"><a href="https://discoveringantarctica.org.uk/oceans-atmosphere-landscape/ice-land-and-sea/tectonic-history-into-the-deep-freeze/">Tectonic history: into the deep freeze</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://discoveringantarctica.org.uk/oceans-atmosphere-landscape/ice-land-and-sea/tectonic-history-into-the-deep-freeze/embed/#?secret=FeaJ0anL2C" width="600" height="400" title="&#8220;Tectonic history: into the deep freeze&#8221; &#8212; Discovering Antarctica" data-secret="FeaJ0anL2C" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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