Sea Floor Spreading Diagram

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.

Sea floor spreading diagram. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Most such faults are found in oceanic crust where they accommodate the lateral offset between segments of divergent boundaries forming a zigzag. The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. Magma molten rock withing the earth s mantle.

Lower mantle semi rigid the deepest parts of the mantle just above the core. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate. Whats people lookup in this blog. The red colors are the youngest parts of the seafloor where fresh new crust is formed as lava seeps up from the deep interior of the earth at spreading ridges as new crust forms at these spreading ridges older crust colored green in the diagram moves away from.

The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed. In seafloor spreading. Learn vocabulary terms and more with flashcards games and other study tools. Seafloor spreading is the continuous process of forming new igneous rock at midocean ridges by injection of magma that forms new seafloor.

Lithosphere the crust plus the rigid upper mantle. Read the definitions below then label the seafloor spreading plate divergence diagram. The process of sea floor spreading. The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american.

A transform fault or transform boundary is a fault along a plate boundary where the motion is predominantly horizontal. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. Spreading rates determine if the ridge is fast intermediate or slow. The mid ocean ridge is the region where new oceanic crust is created.

The process is continuous because forces cause opposite sides of the midocean ridge to constantly move apart making new room for the process to repeat. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Sea floor spreading worksheet key ocean floor diagram quizlet diagram of the ocean floor model of sea floor spreading sea floor spreading worksheet. This diagram provides evidence of seafloor spreading by showing the ages of ocean floor in the atlantic and eastern pacific oceans.

This can result in an ever widening seafloor at the.