More expensive flooring options include natural stone, which can easily be up to $50 per square foot, and hardwood floors, which are rarely cheaper than $12 per square foot including the price of installation.hat you will need in the bathroom will differ substantially from what you need in the bedroom. Tile is a smart choice in rooms with water and humidity such as the laundry room, kitchen and bathroom. Average costs of porcelain and ceramic are $5 to $12 per square foot, including the price of installation.
The layer that is thinnest under the oceans is the crust. While it  is thinnest in those underwater regions, it is the thickest in the  regions where mountains are.
A mysterious layer lies beneath Earth's massive tectonic plates. Sandwiched between two rock layers â the rigid lithosphere and the more pliable asthenosphere â this thin boundary is like the jelly in a peanut butter sandwich.oth layers are solid rock, but the lithosphere is hard, stiff and cold and the hotter asthenosphere flows and deforms on a geologic time scale. The discontinuity, molten or not, lies at depths from 30 miles (50 km) under the ocean floor to 120 miles (200 km) beneath continents.