Community Vision Statement. âThe City of Miamisburg is a progressive and in-. novative community that seeks to promote meaningful. citizen involvement in shaping the Cityâs future, while. preserving the best of the Cityâs vibrant history.â.
The deepest point of the Mariana Trench is called The Challenger Deep , so named after the British exploration vessel HMS Challenger II, and it is located 210 miles south-west of Guam. This depth was reached in 1960 by the Trieste, a manned submersible owned by the U.S. Navy.
This is where excess crust is subducted and melted as new crust is produced at oceanic ridges. Deep-sea trenches are areas of plate convergence. Volcano locations (red squares above) match closely the regions of trenches (subduction zones) and oceanic ridges (spreading centers). The trenches have crustal friction near the surface and deep into the crust as subduction forces one plate under another.