Oceanic crust

volcanoes represent different types of volcano forms, however, Hawaii’s Kilauea volcano is still active while Japan’s Mount Fujiyama has not erupted since between 1707-1708. Havelock Ellis once said, “All civilization has from time to time become a thin crust over a volcano of revolution,” and when we think about his quote the forming of Hawaii and Japan both come to mind. In order to understand the volcanoes that…

striping. Then Vine, Matthews, and Morely put this information together and found out that new oceanic crust and lithosphere was created at the oceanic ridge by eruption and intrusion of magma. So of course next question arise. If lithosphere is continually being created at the oceanic ridges, the oceans should be expanding constantly. Benioff zones and the oceanic trenches provided the answer. Because oceanic lithosphere is cold and brittle, it fractures as it descends back into the mantle. …

this. Bismuth’s symbol is Bi and comes from the German word for white pass. Bismuth is a solid, silvery, soft metal with either a yellowish or pinkish tint and can be found in the earth's crust. This element is rare and has an estimated crustal abundance of 8.5×10-3 milligrams per kilogram and an estimated oceanic abundance of 2×10-5 milligrams per liter. Bismuth is located on period 6 of the Periodic Table and is in group number 15, the Pnictogens and has 5 valence electrons. Other elements…

through tremendous changes in the past 4.6 billion years. From a united continent to seven continents spread all around Earth’s crust, species have evolved. Today, these changes are partly caused by human beings, rapidly causing a massive extinction—one that Elizabeth Kolbert calls the sixth extinction. Kolbert argues that due to humans getting involved in atmospheric and oceanic procedures, as well as affecting the principles of geographic distribution, we are either already in the process or…

trench is 69km (43miles) wide. The length is five times greater than the length of the Grand Canyon. According to the www.livescience.com website The Mariana Trench was created by a process that occurs in a subduction zone where two parts of oceanic crust collide (subduction is a process when one tectonic plate collides with another and submerges under it slowly sinking…

field in Idaho. But as agent Mulder probably would explain to us, all those snowballs actually are a natural, albeit extremely rare, phenomenon known as snow rollers.As the National Oceanic and Atmospheric Administration’s website explains, snow rollers form when an unusual sequence of events occur. First, a smooth crust of snow that’s already on the ground is covered by newer, lighter layer of snow. Then, the weather abruptly changes, warming rapidly, and strong wind kicks up. The wind picks…

or opening, in the Earth’s surface through which molten rock, gases, and ash erupt. The word also refers to the form or structure, usually conical, produced by accumulations of erupted material. Volcanoes are formed near weak spots on the Earth’s crust and where magma has been stored below. Magma is created when tectonic plates come together at a subduction boundary, one plate…

an area known as the Colorado Plateau rose spectacularly because of the convergence of the Pacific plate and the North American plate. Millions of years ago, the plates collided and the oceanic crust subducted. The Pacific plate was pushed under the continental crust, and the upward push of the continental crust led to the formation of the Rocky Mountains, which were once even higher than the Himalayas. The conflict between these plates were buckling, which caused the formation of mountain…

that move around across the earth 's surface relative to each other, like big pieces of ice on a lake. If we were able to lay the earth flat to see where the plates were positioned, it would have the appearance of an orange peel; with the earth 's crust as the orange color shell and the white as the lithosphere. The break points would be fault lines, the plate’s outer perimeter that aligns and intersects them. In its early history, geologists believe that the continents and ocean basins of the…

Samoan 2009 tsunami report: What caused the earthquake and tsunami? On Tuesday the 29th of September 2009, a huge tsunami hit Samoa – as well as several other islands – and impacted many, leaving a path of destruction. Tsunamis are big waves that are generated from earthquakes, or volcanic eruptions that occur in the ocean. When the waves move inland they gradually gain height as the ocean gets shallow. So, the speed of the tsunami is related to the depth of the ocean. Tsunamis travel very fast…