What is the movement of rock material called?
Erosion is the physical removal and transportation of weathered material by water, wind, ice, or gravity. Mass wasting is the transfer or movement of rock or soil down slope primarily by gravity.
What are the large moving pieces of rock?
The Earth is in a constant state of change. Earth’s crust, called the lithosphere, consists of 15 to 20 moving tectonic plates. The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another.
What is a slab pull and ridge push?
‘Ridge Push’ and ‘Slab Pull’ are thought to be the major forces driving the motion of oceanic plates. Ridge push is caused by the potential energy gradient from the high topography of the ridges. Slab pull is caused by the negative buoyancy of the subducting plate.
What is a subducting slab?
In geology, a slab is the portion of a tectonic plate that is being subducted. Slab subduction is the mechanism by which lithospheric material is mixed back into the Earth’s mantle.
What is defined as the mass movement of rock?
Mass movements (also called mass-wasting) is the down-slope movement of Regolith (loose uncemented mixture of soil and rock particles that covers the Earth’s surface) by the force of gravity without the aid of a transporting medium such as water, ice, or wind.
What do we call the pieces of land that are slowly and constantly moving?
The Earth’s crust and upper part of the mantle are broken into large pieces called tectonic plates. These are constantly moving at a few centimetres each year.
What is mantle drag?
Mantle drag was the first driving mechanism to be proposed, and envisages plate motion in response to the viscous drag exerted on the base of the lithosphere by the lateral motion of the top of mantle convection cells in the asthenosphere (Fig. 12.9a).
What is the movement of Ridge?
Ridge push (also known as gravitational sliding) or sliding plate force is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding down the hot, raised asthenosphere below mid-ocean ridges.
What is another word for subduction?
What is another word for subduction?
| subtraction | deduction |
|---|---|
| markdown | rollback |
| knock-off | abstraction |
| discounting | docking |
| dockage | contribution |