The Continental Between Continental Crust And Oceanic Crust

10. This Figure 3 vertical cross-section exhibits a profile consistent with a tectonically [(passive)(active)] coastal region.

Should the Fixists have accepted Alfred Wegeners’ idea of continental drift more quickly? I personally have more sympathy on Wegeners’ part, having some very sound evidence to support an exceedingly well claim. The idea that Pangea, a supercontinent consisting of all the landmasses on earth, existed 300 million years ago, was all Wegeners’. In this essay, I will give evidence to support Wegeners’ claim such as plate boundaries, glacial scratches, mountain ranges, and fossil evidence.

There are three distinct types of plate boundaries existing, which are supported by geological observation, geophysical data, and theoretical considerations. Their names and categories are based on if adjacent plates move apart from each other (divergent plate margins), toward one another (convergent plate margins), or slip past one another in a direction parallel to their common boundary (transform plate margins) (Pitman, W.C., 2007).

When most individuals think about the ocean they visualize water, and the creatures of the sea. Rarely do individuals think about the sea floor or the creation process of it. Sea floor spreading and plate boundaries are not a common subject to anyone outside of a scientific or marine biology lab. The purpose of this paper is to identify plate boundaries. Compare and contrast ideas behind plate tectonics and the theory of the continental drift. There are many types of plate boundaries. Each one

To support the theory of continental drift is through topography, surveying the floors of oceans, charts of rock magnetism, and statistics on rock ages (Trefil & Hazen, 2010). At one time scientist believed that the deep ocean floors were flat; accumulating the sediment that progressively wore away from the prehistoric landmasses (Trefil & Hazen, 2010). However, they discovered steep-walled valleys and elevated highlands. This was evidences that just as the continents are transformed and are active, so to is the seafloor (Trefil & Hazen, 2010). The Mid- Atlantic Ridge, positioned in the central part of the Atlantic Ocean, is recorded to be the longest mountain range on this planet. Volcanoes, lava flow, and earthquakes are a source of

The youngest oceanic crust is located along the mid-ocean ridges where new crust is formed when the old crust is pushed away from mid – ocean ridges as a result of the seafloor spreading.

The strata were not positioned in a vertical or horizontal orientation but more in between. The average angle of incline was approximately 45 degrees. The angle of the layers was not consistent along the entire length of the coast. There was a steeper angle in the more northern areas and moving further south the angle decrease to a more horizontal gradient. While the angle did vary gradually there was no sharp discernible change or perpendicular

Located on the fault are sediments, amongst them are turbidites. Turbidites are areas of sediment are deposited in the deep ocean. There are also oceanic deposits, volcanic ash, siliceous oozes, and primary dolomites, which are a formation of

The plate boundary is located at an ocean trench because both plates are moving towards each other.

Welcome to one of the planets most obscure but important features, known rather prosaically as the mid ocean ridges. In 1973 a group of oceanographers discovered this ridge of mountains on the ocean’s floor. Since then, they have been more closely exploring the ridges and studying how they move and exactly what they are. They have come to discover, that the “ridges feature long rift valleys and, down their middles, giant fields of gushing, hot springs that shed tons of minerals into icy sea water at the bottom of the sea,” which over time has come to create these huge mid-ocean ridges where many animals like to live, cause its some warm.” A main question is to what extent the volcanism changes over time. The old idea was that the eruptions

Mid-Ocean Ridges, such as the Mid-Atlantic Ridge, are formed when two oceanic plates move away from each other, allowing magma to rise up from inside the Earth. The magma reaches the bottom of the ocean, turns into lava and cools, forming new rock. This cycle continues constantly spreading the sea floor and adding new material along this chain of mountains. Rift Valleys, such as Baikal Rift Valley, are formed when two continental plates move away from each other, stretching out the crust, until it begins to break. As crust is stretched wider, the valley drops

Adjacent plates pull apart, such as at the Mid-Atlantic Ridge, which separates the North and South America Pates from the Eurasia and Africa Plates. This pulling apart causes "seafloor spreading" as new material from the underlying less rigid layer, or "asthenosphere," fills the cracks and adds to these oceanic plates.

Littoral drift occurs as incoming waves move toward the beach at an angle, transporting sediment particles to shore at the same angle (swash), while backwash pulls particles straight back into the water. The resulting zig-zag motion moves particles along a shoreline, eventually forming features such as barrier islands, tidal inlets, and spits. (Loved seeing Dauphin Island in the

Convergent Boundary- At convergent boundaries, two plates move toward one another, colliding and pushing into each other. The plate that is made of oceanic crust can slide down beneath another plate, which forms a deep narrow trench. As one is pushed under the other, the plate begins to melt, which causes a line of volcanoes to form that are in a parallel line to the trench. If both tectonic plates are continental crust, the plates will collapse or break up as they collide, which forms a high mountain

The first part of this process is to be believed to be the separation and rifting of an older continent. The continued widening