Deep Sea Floor Spreading

Sea Floor Spreading Blank Diagram Google Search Sea Floor Plate Tectonics Diagram

Sea Floor Spreading Blank Diagram Google Search Sea Floor Plate Tectonics Diagram

An Illustration Of Seafloor Spreading Seafloor Spreading Sea Floor Earth Activities

An Illustration Of Seafloor Spreading Seafloor Spreading Sea Floor Earth Activities

Seafloor Spreading Seafloor Spreading Earth Science Activities Earth Science

Seafloor Spreading Seafloor Spreading Earth Science Activities Earth Science

Seafloor Spreading Windows To The Universe Seafloor Spreading Ocean Earth Science

Seafloor Spreading Windows To The Universe Seafloor Spreading Ocean Earth Science

Deep Sea Vent Chemistry Diagram Mid Ocean Ridge Wikipedia Geothermal Energy Mid Ocean Ridge Seafloor Spreading

Deep Sea Vent Chemistry Diagram Mid Ocean Ridge Wikipedia Geothermal Energy Mid Ocean Ridge Seafloor Spreading

Sea Floor Spreading Lecture Sea Floor Oceanography Lecture

Sea Floor Spreading Lecture Sea Floor Oceanography Lecture

Sea Floor Spreading Lecture Sea Floor Oceanography Lecture

First related the symmetrical magnetic patterns in seafloor basalts to sea floor spreading at a mid ocean ridge.

Deep sea floor spreading.

Linear magnetic patterns associated with mid ocean ridges are configured as. They re not part of the east pacific oceanic ridge. On the basis of tharp s efforts and other new discoveries about the deep ocean floor hess postulated that molten material from earth s mantle continuously wells up along the crests of the mid ocean ridges that wind for nearly 80 000 km 50 000 miles through all the world s oceans. Everest but to mauna kea on the big island of hawaii.

Radiometric dating of a magnetic anomaly stripe of rock that is 225 km away from the mid ocean ridge axis gives an age of 4 5 million years. The mid ocean ridge is where the seafloor spreading occurs in which tectonic plates large slabs of earth s lithosphere split apart from each other. If the oceanic crust reaches a deep sea trench it sinks into the trench and is lost into the mantle. Scientists now know that the oldest crust is coldest and lies deepest in the ocean because it is less buoyant than the hot new crust seafloor spreading is the mechanism for wegener s drifting continents.

The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate. 50 km per year. 20 000 cm per year. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process.

These age data also allow the rate of seafloor spreading to be determined and they show that rates vary from about 0 1 cm 0 04 inch per year to 17 cm 6 7 inches per year. Assuming a constant rate seafloor spreading in this area occurs at a rate of choose one. The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones rather than magma pressure although there is typically significant magma activity at spreading ridges. Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid oceanic ridge.

Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. Seafloor spreading helps to explain continental drift in the theory of plate tectonics. As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading. The volcanoes of hawaii are located above a deep mantle hot spot.

1 012 5 km per year. First you will need to get into a deep ocean submersible and dive almost 4 miles under the surface of the pacific ocean to the sea floor. 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 plate the cocos plate the nazca plate and the antarctic plate. The seafloor spreading hypothesis was proposed by the american geophysicist harry h.

Sea Floor Spreading Earth Science Sea Floor Sea

Sea Floor Spreading Earth Science Sea Floor Sea

The Sea Floor Spreading Activity For Science Interactive Notebooks Is A Simple Yet Powerful Interactive Science Notebook Earth And Space Science Earth Science

The Sea Floor Spreading Activity For Science Interactive Notebooks Is A Simple Yet Powerful Interactive Science Notebook Earth And Space Science Earth Science

Image Result For Sea Floor Spreading Earth Science Continental Shelf Sea Floor

Image Result For Sea Floor Spreading Earth Science Continental Shelf Sea Floor

Mid Ocean Ridge Spreading Earth Science Lessons Earth Science Plate Tectonics

Mid Ocean Ridge Spreading Earth Science Lessons Earth Science Plate Tectonics

Source : pinterest.com