Wow, I did some googling and found this cross-section of the Mariana Trench. Was not expecting this at all (bottom of the page, figure 4): https://mason.gmu.edu

Wow, I did some googling and found this cross-section of the Mariana Trench. Was not expecting this at all (bottom of the page, figure 4): https://mason.gmu.edu/~bklinger/deeptrench.html https://mason.gmu.edu/~bklinger/deeptrench.html