– Geological Fossil records – biological Fossil forests – biological Living species – biological climate Conclusion: brief summary of key ideas & evidence go back to answer question whether some evidence is stronger link continental drift to plate tectonics & modern day Paragraphs: start with topic sentence ends with summary sentence – links back to question Middle – what? Where? Why? How & examples The continental drift theory was first proposed by a German called Alfred Wenger in 1915. He suggested
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Gondwana: Nothofagus or Southern Beech. A genus of around 40 extant species of trees. 3. Describe the theory of plate tectonics and identify its role in the formation of Australia as an island continent: The theory of plate tectonics states that Earth’s crust and the outermost part of the mantle are mechanically connected to each other. This layer is broken into several plates that move about Earth’s surface. As they move about‚ they are constantly interacting with each other along their boundaries
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What is Earth’s mantle? The Earth’s mantle is a roughly 1‚800 mile (2‚900 km) thick shell of compressed and heated rock‚ beginning below the Earth’s crust (lithosphere)‚ which extends 3.1 miles (5 km) below the ocean floor and 19 to 31 miles (30 to 50 km) below the continents. What elements make up the Earth’s mantle? magnesium‚ silicon‚ iron‚ and oxygen Describe the “big splash” theory of the Moon’s origin? The currently accepted hypothesis for the Moon’s origin--which is supported by chemical
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Earth’s internal layers… know physical concepts such as energy (kinetic‚ heat)‚ density‚ convection‚ bioaccumulation‚ biodegradation‚ photo-degradation‚ diffusion… Plate Tectonics – major Plate Tectonic principles; What are the 3 plate boundaries and their driving mechanisms? Where are trenches?... What are hot spots? What is our plate boundary here in SD? In which direction are we moving? Marine Provinces – the 2 continental margins and where they’re found… Seawater – the water molecule – characteristics
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temperature and crystallizes in caverns deep within the earth. The molten rock cools quite slowly over time‚ which allows the crystals to grow and develop inside the molten rock. Granite is transported to the surface of the earth by plate tectonics. The collision of continental plates moves the granite from deep within the crust of the earth to the surface. Granite is found in Ireland in the Wicklow Mountains. (http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015252.html) Granite is distinguished
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1.1- Introduction Availability of natural resources and their proper application to overall development activities is the key factor for the economic growth of any nation. Bangladesh‚ though it is a small country of about 143‚998 sq km‚ has a number of mineral resources within its territory. The mineral resources so far discovered are mineral fuels (oil‚ gas‚ coal‚ peat)‚ hard rock‚ limestone‚ white clay‚ glass sand and heavy mineral sands. It was previously assumed that the geological setting of
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MSC 160 Oceanography Chapter 2 Review Plate Tectonics Study Guide 1. What is the theory of continental drift? 2. Who proposed the theory? When? 3. What scientific data was used to support the theory of continental drift? Identify and explain at least four pieces of evidence. 4. What were the problems with the original theory of continental drift? 5. How does the presence of ocean ridges and trenches support the theory that the continents move?
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the Earth ’s continents relative to each other. The hypothesis that continents ’drift ’ was first put forward by Abraham Ortelius in 1596 and was fully developed by Alfred Wegener in 1912. However‚ it was not until the development of the theory of plate tectonics in the 1960s‚ that a sufficientgeological explanation of that movement was found. |Contents | | [hide] | |1 History
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different particles. The new particles that are formed when exposed to the elements are then in equilibrium. 2.) Minnesota is located on the North American plate. The Caribbean Plate is one of the closest boundaries and it is mostly a transform boundary but also has some areas of convergence. Another of the closest boundaries is the Juan de Fuca Plate and it is a convergent boundary. 3.) The most likely of the geologic hazards that could happen to Minnesotans is flooding and the possibility of landslides
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Introduction The Caledonian orogeny happened during the late Silurian to early Devonian periods. This was due to the westward subduction of Baltican plate beneath the Laurentian margin. The continent to continent orogeny resulted in a over thickened crust. During the Palezoic orogeny several different processes were at work simultaneously‚ which included erosion‚ plate divergence‚ gravity driven collapse of the orogenic wedge‚ and viscous flow of the lower crust. The double set of extensional shear zones
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