In the following space, explain the role of plate tectonics in the origin of sedimentary rock. Your explanation must be between 250 and 450 words.…
2. What are the features of the ocean floor and how can they be explained by plate tectonics?…
13. How does the development of the theory of plate tectonics illustrate the changing nature of scientific knowledge?…
The discovery of no rocks older that 2 billion years old on the ocean floor proved the theory of seafloor spreading.…
By using the principle of uniformitarianism, we can study the way rocks are formed and look at the same rock that is designed today. Same goes for the way the wind placed the sand grain and made sand dunes that were spotted in Arizona. The lithosphere theory of earth contains many different plates that float around on the upper part of the earth. This could explain how the formations of volcanoes erupt and how earthquakes happen.…
One evidence is the continental drift that made Pangea drift into the us known continents today. The next evidence is sea floor spreading which is demonstrated by alternately magnetized volcanic crustal rock. New crustal material was formed by volcanic eruptions by the crest of mid oceanic ridges and therefore slow lateral movement of the crust away from the ridges was occurring.…
Another part of tectonic theory, which came before the suggestion of plates, is palaeomagnetism which was first discovered in the 1960s. It was suggested that approximately 400,000 years the Earth experienced reverse polarity. This means that the magnetic north and south poles swap direction. This was backed up by evidence which involved ferrous rich rocks such as magnetite under the Atlantic Ocean. These rocks are found on the sea floor on either side of the Mid-Atlantic Ridge and are formed when solidified magma broke through the lithosphere at the Mid-Atlantic Ridge…
‘Volcanic and seismic events are major pieces of evidence towards proving that plate tectonics theory is valid.’ Discuss the extent to which you agree with this statement. (40 marks)…
Sea level drops, returning the area to a beach environment where the Coconino Sandstone was deposited.…
PLATE TECHTONIC THEORY:The lithosphere that is broken into plates move on earth’s surface relative to one another. Zones of volcanic, E.quake mark most plate boundaries.…
The first thing scientist studied was the meteorites as they studied they try to find facts from the Earth's past. The scientists studied the meteorites to find facts from the past because earth's facts of how it was formed was almost lost when the earth has changed. “The scientist took 9 samples in attempt to learn more about how the Earth changed from it's earlier formation of the early…
Plate tectonics theory, which is the modern theory of the motions of Earth’s layer, explains how geological features, such as mountain ranges, continents, and bodies of water move and form. An important aspect of plate tectonics theory is that the outer layer of the earth is divided into plates which move across the earth’s surface. “These plates move relative to each other, typically at rates of 2-4 inches per year. As the plates move, they interact along their boundaries” (Plate Tectonics). In other words, the formation of geological features occur at the plate boundaries which is where plates slide and interact. There are four types of plate boundaries: divergent boundaries, convergent boundaries, transform…
2. The article does well to personify the importance of its geology. This is chiefly due to the fact that multiple things have been uncovered in its basin. This includes dinosaur bones, shale deposits originally located in Cretaceous Interior Seaway, and multiple fossil remains. To go along with this, they were able to layer the basin based on the age of the various rocks underneath the surface. This ultimately aided them in determining the sequence of age of the basin. As I continued through the article, it helped me to realize the full impact this research had. It is not difficult for them to deduce that this land is ever-changing in terms of its geology. Because of this research, it has helped us to gain a stronger…
3. What are examples of the physical landscapes that can be explained by the theory of plate tectonics? The Pacific Ring of Fire, Mount Pinatubo, Pangaea, the Mid Atlantic ridge, the Rift valleys of Africa, the Himalaya mountains, etc.…
All oceanic and continental plates move within the lithosphere, which is the outermost shell of the planet. The lithosphere has more strength than the underlying asthenosphere allowing the tectonic plates to move. Seafloor motion away from the spreading ridge and drag at the subduction zones is a theory for plate movement. The tidal forces of the sun and moon and the forces generated by the rotation of the globe is another idea for plate movement. There are other hypotheses on plate movement but these are the two main scientific theories. The relative importance of these factors are unclear and still on…