I don't know whether this was one of your options, but South Asia can be very well characterized as a Sub-continent.
In fact, it's is commonly referred to as "the Indian Subcontinent" or even simply "Subcontinent". One of the reason for a distinction of this part of the land is that it lies on a different tectonic plate.
<span />
The coolest layer is the crust. The crust is on the surface of the earth (where we are) . Inner Core
The Salton Sea<span> is a shallow, saline, endorheic rift lake located directly on the San Andreas Fault. And the soil is poisoned by the toxic gases and high dust winds that it causes.</span>
