In English common law, fee tail or entail is a form of trust established by deed or settlement which restricts the sale or inheritance of an estate in real property and prevents the property from being sold, devised by will, or otherwise alienated by the tenant-in-possession, and instead causes it to pass automatically by operation of law to an heir ...
Oceanic-Continental Plate Convergence. When an oceanic plate collides with a continental plate the crust forming the oceanic plate gets bent and pulled under the continental crust. This is because the rocks that form the oceanic crust are denser and thinner than the rocks that form the continental crust. The process by which the oceanic crust is pulled under the continental crust is called subduction and the zone at which this occurs at the plate boundaries is called the subduction zone. At the subduction zone where the oceanic crust sinks beneath the continental crust a deep oceanic trench or valley is created.
Plate Tectonics. 1  Convergent boundaries: Plates move toward each other and collide. As we have two kinds of plates, oceanic and continental, there are three theoretically possible combinations: oceanic plate collides with a continental plate: the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench.