Diastrophism is deformation of earth’s crust, caused by folding and faulting. Convergent plate boundaries are formed through diastrophism. A convergent boundary (or a destructive plate boundary) is formed when two or more tectonic, lithospheric plates collide. There are two types of plates: oceanic (more dense) and continental (less dense). If two oceanic plates collide, subduction will occur. Subduction refers to the movement of one plate, sliding underneath another plate. The plate that is pushed
rocks to be pulled apart by tension and reverse faulting, which is the opposite where the hanging wall moves upward casuing rocks to be forced together by tension. These movements cause tectonic plate boundaries called divergent boundaries, convergent boundaries and transform boundaries. Each boundary is different and play a
TOHOKU, Japan, Friday, Mar. 11 -Yesterday, a 9.0 magnitude Earthquake struck the east of Tohoku, Japan. The epicentre of the earthquake was located approximately 72 km east of Tohoku (38.3 degrees North latitude and 142.4 degrees East longitude), or 130 km east of Sendai as shown by the X in figure 3 below. The focus of the earthquake was 24.4 km under the epicentre. The earthquake therefore caused a tsunami due to the displacing of water above the Pacific Plate. The earthquake and tsunami together
About 320 million years ago, precursors of Pangea Laurussia (combined Scotland, Greenland, North America and Russia) and Gondwana ( which was the rest of the earth's land mass ) converged and made a Godzilla continent surrounded by the huge panthalassic ocean. The collisions of Laurussia and Gondwana raised a mountain belt, present-day remnants of which are the Appalachians along North America’s eastern coast and highlands in central Europe. By 135 million years ago (dang plate tectonics, you move
thought he was wrong, they were the ones that were wrong. One way we can tell that the continents moved a long time ago is by the mountain chains forming on plate boundaries. As the plates are subducted or push alongside each other, they form mountains or volcanoes above and below the ocean surface. We can find out the plate boundaries by The continents are moving around because of the new rock forming and spreading at the mid-atlantic ridge. The molten rock pushes up from the crack in the earth
Soil and rock are the main composition of the planet’s crust. Rock is often considered a consolidated material but soil is described as an unconsolidated remains and deposits of solid particle that have been formed by the breakdown of rocks. Soils can be grouped into two categories depending on the method of deposition. Residual soils have formed from the weathering of rocks and remain at the location of their origin. Residual soils can include particles having a wide range of sizes, shapes and compositions
like the skin of our earth (see source 2). The skin is split up like a puzzle and we call these puzzle pieces’ tectonic plates (see source 1). These plates are constantly moving and the plate boundaries (edges of the plates) move and slide past one another. Sometimes as the plates move the plate boundaries become stuck. Pressure builds up in the stuck area over time and eventually breaks. This is why earthquakes occur due to the sudden movement of the plate sliding and breaking creating a fault line
While all of the continents were formed by the splitting of the supercontinent Pangaea, Iceland emerged because of a divergent, spreading, boundary between two plates known as the Eurasian and North American tectonic plates (Fig. 1). As these plates move away from each other, Iceland is torn down at its center, which causes both sections to move apart. Because of these moving plates, magma rises from the asthenosphere below, providing molten rock for the volcanoes and heat for the geysers that are
On planet Earth, there are many geological processes (aka earth processes) that occur. These natural geological earth processes certainly have an utmost significance and it is important that we are aware of their abilities. A few of these natural processes include plate tectonics, volcanism, earthquakes, mass-wasting, and tidal waves. These processes affect the environmental conditions around the Earth. In the history of our planet, it has been shown that these geological processes have changed the
OCEANIC CRUST Introduction: Oceanic crust is the outermost layer of Earth above the mantle. It is the part of the Earth’s crust which makes up the Ocean Floor. It is basically the uppermost layer of the oceanic portion of a tectonic plate and lies on top of the solidified and uppermost layer of the mantle. Division: It can be partitioned into two types: • Continental crust • Oceanic crust Composition: The oceanic crust is more dense, thin and simpler in structure as compared to the continental
In seismology, there are several types of waves studied, each of these waves have characteristics that define them. Seismic waves can be split into two categories, and they are body waves and surface waves. Body waves travel and move within the earths subsurface and inner layers. There are two types of body waves, P-Waves also known as compressional waves or primary waves, and S-Waves also called secondary or shear waves. The S-Waves have a vertical (Sv) and horizontal (Sh) component. “In an infinite
Natural Disaster Pamphlet - Volcanos What are Volcanoes? A volcano is a opening or rupture on the earth’s crust. The rupture leads to a pool of molten magma, near the core of the earth. When the earth’s crust ruptures, pressure builds up, resulting in an eruption occurring to release the pressure. Toxic gases and rocks shoot up through the opening, overflowing the air with hot lava fragments. This can bring floods, avalanches, and can even provoke tsunami and earthquakes. How are they formed
The Mesozoic (or Middle life) Era The Mesozoic (or Middle life) Era started with the mass extinction of the Paleozoic Era, and ended with the extinction of the Cretaceous period (Levin). It includes the Triassic period from 251 to 200 mya, followed by the Jurassic period, from 200 to 145 mya, and finished with the Cretaceous period, from 145 to 65 mya (Levin). Pangea When the new era began, the supercontinent Pangea started to split into two, our modern North America being part of Laurasia first
More specifically, the focus will be on the Axial Seamount. Hidden below the Pacific ocean, about 300 miles off the coast of Oregon, lies the Axial Seamount. It is located on the plate boundary between the Pacific tectonic plate and the Juan de Fuca tectonic plate. The plate boundary is a divergent plate boundary, meaning that the two plates are slowly pulling away from each other. This causes a gap to be left behind in the ocean’s crust. Magma from deep below races to fill in the gap. Once the magma
earth's crust) can cause divergent, convergent,and transform boundaries.A boundary the way two tectonic plates collide. is Continental plates are plates that the continents are formed on. Oceanic plates are plates that the ocean covers, and the oceans form on top of these plates. Convergent boundaries and divergent boundaries are ways that these oceanic and continental plates interact with each other. Landforms are formed at boundaries. The landforms formed at boundaries depends on the type of plates that
plates; continental plates have a density of 2.7 g/cm^3 but oceanic plates have a density of 3 g/cm^3.The area at which these plates meet are called plate boundaries. There are three types of plates boundaries that we have identified: convergent plate boundary, divergent plate boundary, and transform plate boundary. A convergent plate boundary is where two plates are moving toward each other. If the two plates are of equal density (two continental plates or two oceanic
Plate Tectonics Plate tectonics is the manner of which the Earth’s lithosphere moves around. The weakness of the Earth’s upper mantle allows the Earth’s lithosphere to move. The lithosphere is not a single unit, it is broken down into a series of plates. The result of plate tectonics movements result in large catastrophes and natural disasters. Why do plate tectonics move ? The mantle of the Earth is very weak so, the rigid structures of the lithosphere move around easily. Tectonic plates move
was actually in power from 1661 until 1715. His legacy is somewhat unusual. Some historians believe that Louis' wars and heavy taxation policies led eventually to the outbreak of the French Revolution. He repeatedly tried to move France's eastern boundary to the Rhine river. Two hundred and fifty years after Louis XIV, a leader would emerge in Germany who would claim all that he was trying to do was to reverse the outcome of the wars fought between Louis XIV's France and the Germans. Louis' father
This is a revised version of MP3. Theoriginal Sucked ass so I took some liberties with it so as not to get an F. This one should be much better...... Mp3: A Boundary or a Bridge? One of the newest, most exciting and innovative ways to get music these days is not in the mall and not at a huge mega-sized electronic store, it's not even by a mail order CD club. It’s the computer. It sits conveniently on a desk and now allows access to every imaginable genre of music, twenty-four hours a day, rain
China, people had a strong sense of repayment (ˆó´ð). People who do not have this ability to repay others who have helped them before are usually being looked down on. The sense of repayment is perhaps a product of a good friendship or love. And the boundary of love here in this case, is not only about the love between couples but all different kinds of love also, for instance, the love between family members. Therefore, repayment is in fact tied in with the theme of filial piety. People¡¯s devotion