Even though the submarine canyons are very steep and deep parts of the oceans, and can go up to 5 km in depth, still they are not the deepest parts of the oceans. The deepest parts are were there's two plates moving away from each other and making huge gaps, like in the case of the deepest place on the planet, the Marian Trench, with around 11 km depth.
Here is a list.
* The Market Economy
* The secondary industry
* Culture
* birthrate
* economical/economic activity
* and soooo much more!!!
* Just google it.
Uniformitarianism
fossils
radioactive decay
48 million
after
The youngest age of the shale is 910 ka. According to the principle of inclusions, the shale formed before the tephra, so the tephra must be younger than 910 ka.
