Select the cell or range of cells that contains the data that you want to split. On the Data tab, in the Data Tools group, click Text to Columns. In Step 1 of the Convert Text to Columns Wizard, click Fixed Width, and then click Next.n Step 1 of the Convert Text to Columns Wizard, click Delimited, and then click Next. In Step 2, select the Space check box, and then clear the other check boxes under Delimiters. The Data preview box shows the first and last names in two separate columns. Click Next.
Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor.Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year.he greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level.
There are three main types of plate boundaries: 1. Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. The denser plate is subducted underneath the less dense plate.The plate being forced under is eventually melted and destroyed.i.here are three main types of plate boundaries: 1. Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. The denser plate is subducted underneath the less dense plate.