Tectonics

An earthquake is caused by tectonic plates that moves few centimeters per year. The tectonic plates can be oceanic or continental they move mainly because of the gravity but also because the mantle a mixture of rock and melted rock so it move but not as fast as it would move in a liquid. The Sea plates are heavier than the Land plates which is the case of Japan. The tsunami is an earthquake under water but because of the pressure the water will move really fast and it the wave will increasingly…

Damages were not nearly as serious as it would be today, mostly because Southern California was sparsely populated. The effects of the earthquake were quite dramatic, even frightening. Were the Fort Tejon shock to happen today, the damage would easily run into billions of dollars, and the loss of life would be substantial. On March 10, 1933, a 6.4 earthquake hit the Newport-Inglewood Fault, causing serious damage in long Beach and other communities. The earthquake resulted in 120 deaths and more…

Earthquakes Shira Miller Earthquakes are amazing natural disasters. An earthquake is a sudden and violent shaking of the ground. They are a big threat to people because they cause tsunamis, fires, and buildings to crumble on people. One of the biggest earthquakes was the great Chilean earthquake. The quake happened on May 22, 1960 near Valdiva (geology.com). The damage that the great Chilean earthquake caused (including tsunami damage) cost more than 500 million U.S. dollars (NOAA.gov). After…

Earthquakes and volcanoes are generally caused by one thing; plate tectonics. All three will be discussed in detail. This paper will describe how they affect each other. This is a very interesting topic because it is so hard to predict. Plate tectonics are interesting in the way they work. This is the constant moving and shifting of the earth’s crust which is divided into segments called plates. They are about the same size as a continent and vary in size as the continents do. Each plate…

Neotectonics are post Miocene tectonic deformation on the earth surface. Its evidence takes expression in form of recent fault that could have resulted from reactivation of older fault, hot spot volcanism and folding. Herein this review, post Miocene tectonisms are studied, paying attention to their forms, expression and effects as it occur in the Australia…

The Earth's crust is constantly moving in all directions. The movement of the crust is called plate tectonics. Plate tectonics hasn't been developed very long, only about fifty years. It was founded by geophysicists in the 1960's. The continents fit together in one humongous piece. Which makes it one enormous continent. Wegener found out that there were numerous continents that looked comparable. He thought once in the past that parts of Africa and South America might have been…

The topic of this discussion is to explain why Africa and South America are moving apart. The drifting apart of Africa and South America has to do with the theory known as the theory of plate tectonics. Based on this model, the crust the coolest part of the mantle, make up Earth’s strong outer layer, known as the lithosphere. Right beneath the lithosphere is the asthenosphere, the hottest part of the mantle. Rocks at this depth are very near the melting temperature, and respond to forces by…

Volcanoes are mountains that can erupt to spew molten rock everywhere. A volcano can be formed in different ways like hotspots or tectonic plates. The tectonic plates can form volcanoes by forming convergent or transform boundaries. A convergent boundary is when two tectonic plates collide into each other, forming mountains. The transform boundaries form mountains when they slide into one another. Hotspots are formed when the magma is forced up to the Earth's surface. Before Mount St. Helens…

an ancient supercontinent that existed hundreds of millions of years ago. It was made of many continents that we know today. It broke up a long time ago because of something called Continental Drift. Continental drift is what it is called when the tectonic plates move around and rearrange and reshape the continents. Gondwana was made up of 5 main pieces; Africa, South America, Australia, India, and Antarctica. Gondwana existed roughly 300-180 million years ago. Its climate was fairly mild, but…

earth that allow magma, volcanic gases, volcanic ash, and other volcanic material to come to the surface of the earth from magma chambers during eruption. Volcanoes exist because the earth’s crust is split into seventeen major tectonic plates, and they occur when two tectonic plates converge, and magma rises. The hole in the earth, also known as a vent, goes down into a central vent which is beneath the summit crater. At a deep depth, but is widely unknown, a magma chamber holds all of the…