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Phys_org
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Deep beneath California's Sierra Nevada, Earth's lithosphere may be peeling away
The processes that form continental crust from the denser basaltic rocks of the upper mantle may make the lower lithosphere denser than the underlying mantle. One theory holds that the lower lithosphere splits away and sinks into the mantle in a process called foundering. Conclusive evidence of foundering, however, has been hard to come by. ⌘ Read more