BBC2 年
The Earth's structure and plate tectonics
The Earth is made up of different layers ... denser tectonic plates sink into the mantle at subduction zones. As these older sections of plates sink, newer and less dense sections of plate ...
来自MSN1 个月
Continental drift: Why the need for critical minerals might change the way we define Earth ...
The idea of dividing the world into geographical zones is ancient ... This is understandable, given that knowledge about the Earth's tectonic plates was formed during a period when we also ...