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☆☆☆☆☆Dense oceanic crust slides under less dense continental crust
The weight of the rocks in the crust and upper mantle results in the pressure that allows diamonds to form.
Comparing the composition of the crust to other bodies in the solar system.
The weight of the rocks above the mantle results in high pressure.
Diamonds need high temperatures and pressure to form from carbon. Diamonds form in the mantle in certain zones where conditions are right for them to do so.
There just happens to be the right critical temperature-pressure-mineral environment in the mantle in certain zones for their formation.
Continents cannot cut through the ocean floor.
magnetic north
north pole =magnetic south
compass magnets can be deflected by earths magnetic field or other permanent magnets
Reverse
Its Thrust!
The continental crust is up to 70 km thick.
Africa -apex
At ocean ridges
Select ALL the correct responses. The concept of “contained in” includes which of the following?
- No additional interpretation or analysis is needed to determine the classification of the information.
- Classified information is not clearly or explicitly stated in the source document.
- Classified information comes from an authorized source into a new document.
- A reader can deduce the classified information by performing additional interpretation or analysis.
magnetic stuff...
