Geology internal Surface feature: Kiwi point quarry rock face Johnsonville Shops Reference: http://maps.google.co.nz/ Ngauranga gorge Kiwi point quarry Reference: http://maps.google.co.nz/ Exposed quarry rock face from the road in Ngauranga gorge (picture 1). Take note that most of the other photos after this are taken of the rocks behind the trees and below it. Outline of kiwi point quarry Roughly 4m The picture to the left is a picture of the bottom of the rock face in
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valleys which are separated by upright blocks of land called horsts. The fallen blocks of lowland are called grabens. Destructive Plate Margins * When an oceanic plate meets a continental plate‚ the collision is associated with the process of subduction. As the oceanic plate is denser than the lighter continental
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Boundary: occurs when internal forces push two plates together. Oceanic plates collide with continental plates‚ making the continental plate ride up over the denser oceanic plate and pushes it down into the mantle (subduction) * Subduction zone: the area where the collision and subduction takes place * Mountains are formed by two continental plates colliding and pushing up. Ex- Himalayas being formed by China and India * Divergent Plate Boundary: Oceanic plates moving apart from one another
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Maciej Frolow/ Photographer’s Choice RF/ Getty Images The Earth’s crust is an extremely thin layer of rock‚ like the skin of an apple in relative terms. It amounts to less than half of 1 percent of the planet. But the crust is exceptionally important‚ and not just because we live on it. The crust can be thicker than 80 kilometers in some spots‚ less than one kilometer in others. Underneath it is the mantle‚ a layer of rock some 2700 kilometers thick that accounts for the bulk of the Earth. The
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The lateral relative movement of the plates typically varies from zero to 100 mm annually. Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere‚ each topped by its own kind of crust. Along convergent boundaries‚ subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new crust along divergent margins by seafloor spreading. In this way‚ the total surface of the globe remains the same. This prediction of plate tectonics
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“Volcanic and seismic events are major pieces of evidence towards proving that the plate tectonic theory is valid” Discuss the extent to which you agree with this statement (40). The theory of plate tectonics explains the structure and motion of the Earth’s lithosphere. The theory states that the Earth’s crust is split into large sections called tectonic plates‚ and these move relative to one another creating boundaries at which the plates converge‚ diverge or move past each other. These plates
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Chapter 1: Geology is the science that studies the history of Earth and its life. Anthropogenic (human generated) activities such as fossil fuel combustion impacting Earth has led to the study of Earth as a series of systems (series of components that interact to produce a larger‚ more complex whole). Geology is the science that examines the evolution of the natural processes on Earth‚ the evolution of life and the evolution of these interactions and how they caused the earth to evolve towards its
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The Pacific Ocean is home of the “Ring of Fire.” The Ring of Fire is “a geologically active area where tectonic shifts make volcanoes and earthquakes common.” (National Geographic) These volcanoes were all formed due to something called subduction. Subduction is what happens when the plates hit‚ the land from one shift under the other‚ moving kind of like a conveyor belt. Where the plate moves and bends under the other plate‚ this creates a trench. Trenches are all over the Pacific Ocean. Due to
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Cascades Volcano chain: The Cascades Volcano Chain is a volcano chain that runs through Washington‚ Oregon‚ and Northern California. The Cascades are also part of the Ring of Fire that surrounds the Pacific Ocean. The chain was formed by subduction along the Cascadia subduction zone. 7.Olympic Peninsula: The Olympic Peninsula is Washington’s biggest peninsula and is surrounded by the Pacific Ocean. The Olympic Peninsula was formed when micro continents attached onto North America‚ which means it is made
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Mt St Helens – Script Introduction of Theory From the deepest ocean trenches to the highest mountain rangers‚ plate tectonics explain all of the features from the past and present. A plate tectonic is a theory that was developed in the 1960s. According to the concept‚ Earth has a rigid layer called the lithosphere‚ which is normally 100km thick. The lithosphere is broken up into seven large continental and oceanic plates‚ six or seven medium sized regional plates‚ and various small ones. These
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