Use "upthrust" in a sentence

1. This is an area of many transitions-between ocean abyss, continental slope, shallow shelf, and the dramatically upthrust landmass of the islands.

2. Her abasement was expressed in the instrument of unconditional surrender which her representatives subscribed on 2 September 1945 under the upthrust guns of the battleship Missouri in Tokyo Bay.

3. Buoyancy, otherwise called the upthrust, is the force acting in a direction opposite to gravity that prevents a floating object from sinking. When the object is immersed in water (or any other liquid), its weight pulls it downwards.