1) Overhanging 2) Situated above 3) Superjacent 1) Superjacent 
resting on top; overlying; overhanging
• (a.) Lying or resting on something else.
Su`per·in·cum'bent adjective [ Latin superincumbens , present participle of superincumbere . See Super- , and Incumbent .] Lying or resting on something else. 
[adj] - lying or resting on and exerting pressure on something else
superincumbent 1. Lying or resting and usually exerting pressure on something else 2. Exerted from above; such as, pressure.
adjective lying or resting on and exerting pressure on something else; `superincumbent layers of dead plants cut off the air and arrested decomposition`
lying or resting on something else. · situated above; overhanging. · exerted from above, as pressure.