Shield volcano

Mid ocean ridges is the creation of the motion diverging plates and it is an underwater mountain range which are formed by plate tectonics. It consist of mountains linked together, having a valley running along the spine, and its known as an oceanic spreading center which is in charge of the seafloor spreading. New seafloor is being produced when convection currents rise in the mantle layer which is under the oceanic crust, it then create magma that cools down into basalt where two plates is…

A lot of things happened in 1977- The Atari 2600 gaming system was released, Jimmy Carter was inaugurated as the 39th U.S president, and NASA launched Voyager 1. But something else happened, a huge breakthrough for the marine science world. An expedition to the Galápagos Rift revealed hydrothermal vents, and along with it new and unknown creatures that somehow has survived in very harsh conditions. Hydrothermal vents are most commonly found along mid-oceanic ridges, such as the Mid-Atlantic…

Ever since I was a little kid, earthquakes have mesmerized me. I have always just been absolutely amazed about the amount of destruction they cause and how powerful they are. Although I have never thought of becoming a seismologist, it something I would want to learn more about. A seismologist studies seismic waves, energy waves caused by rock suddenly breaking apart within the earth or slipping of tectonic plates. There are many ways that scientists are able to study seismic ways and…

The Mount Vesuvius Volcano has erupted many times. Since AD 79, the volcano has also erupted repeatedly, in 172, 203, 222, 303, 379, 472, 512, 536, 685, 787, around 860, around 900, 968, 991, 999, 1006, 1037, 1049, around 1073, 1139, 1150, and there may have been eruptions in 1270, 1347, and 1500. The volcano erupted again in 1631, six times in the 18th century (especially in 1779 and 1794), eight times in the 19th century (notably in 1872), and in 1906, 1929 and 1944. In this assignment I am…

In this set of materials, the reading passage tells us about the three types of rock, and the listening passage explains the additional usage of sedimentary rock, which is describing as a third rock in the reading passage. The reading passage informs us about the characteristics of the three rocks. The most common rock is Igneous rock which means fire. The example of it is granite. By cooling and solidification of lava, igneous rock will be formed, and this makes up approximately 64.7% of the…

Chile is the longest north-south trending country in the world at over 4,600 km in length, however on average it is just 150 km wide from west to east. The main indigenous people of southern and central Chile are called the Mapuche. Today just 5% of the population is Mapuche or other native people. The official language of Chile is Spanish. Chile is home to some 17 million people (17,216,945) as of July 2013. The capital city of Chile is Santiago which has a population of around 7 million…

“Its amazing how the earth tells us that its alive, that it moves and changes like any living organism.” - Dr Alberto M. Lopez. It is inevitable. It will be destructive. The “Big One” is going to happen and all we can do is prepare. The “Big One”, aka the San Andreas Fault in California, is one of the most famous landmarks of the United States today. It is the longest, most active fault line in the world. Scientist have been predicting a major quake to rupture from it and its due for its deadly…

The Antler orogeny occurred in the Mississippian passive margin of the sialic North American continent in Nevada and probably in Idaho (Speed and Sleep, 1982). Speed and Sleep (1982) proposed an Arc-continent collision model for the Antler orogeny. In their model they assume that The Roberts Mountain Allochthon formed as a result of the large accretionary prism underthrusted by the continental slope and outershelf. The vertical loading and downflexing of the continental shelf by the allochthon…

Mt. St. Helens is a stratovolcano part of a group of volcanoes called The Ring of Fire. These are created from the convergence/subduction between the Juan De Fuca plate and the North American plates. Its most common type of eruption is intermediate eruptions, which is what the composition was in its most recent eruption. Mt. St. Helens most recently erupted on May 18, 1980. An earthquake right under the mountain caused an enormous landslide/avalanche going close to 150 mph. A huge hazard from…

What effect do volcanos have on the Earth? This essay is going to be about volcanoes and how many are active. How many volcanoes have erupted and how long to they last? Many volcanoes are erupting as we speak and more than a thousand have erupted in the past 10,000 years. A volcanic eruption can last up to thousands of years. Scientists don’t have an accurate count of all the volcanoes, but there are about a thousand magma systems. What causes them to erupt and what effect do they have on the…