To answer the following question: Relate the generation of all three rock types (igneous‚ sedimentary‚ and metamorphic) to plate tectonics. I will start first‚ with igneous rocks and how does it relate to plate tectonics. Second‚ with sedimentary rocks and progressively keep on answering how all three types of rocks relate to plate tectonics. Will be giving as much information I learned from class. To assure‚ answer is fully answered. The igneous process begins when magma forms by melting at depth
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Original Horizontality. The principle is shown in figure 8.4 in the text showing rocks compounding with sediment escalating in height that have not been disturbed by geological disturbances. Another relative dating process is the Principle of Cross-Cutting Relationships. This takes place when faults force themselves through older rocks. This means that the faults or dikes have penetrated layers of sediment that were deposited long before the intrusion. By implementing these theories and processes‚ we
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Landslides from the caldera rim formed debris fans and turbidity sediments on the lake bed. During this period‚ fumaroles and sources of thermal waters were common and remained active. After some time‚ the slopes of the caldera stabilized more or less‚ the streams restored the radial drainage system of the mountain and
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glacial periods is enriched with oxygen 16. | The number of oxygen isotope records that broadly agree on sea level changes is high and the correlation with CO2 is good. | Pollen analysis | Pollen taken from sediment cores in peat bogs and lake beds. Pollen grains kept in waterlogged sediments. Different pollen from different plants can be identified. | Relies on preservation of pollen. Long pollen sequences are rare and vegetation may fall behind climate change. | Past glacial/sea level change
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Ancient Life of the Great Lakes Basin: Precambrian to Pleistocene 2011 [Pick the date] Table of Contents I. Introduction 3 II. History of the Great Lakes Basin 3 III. Precambrian Period 3 IV. Ordovician Period 4 V. Silurian Period 4 VI. Devonian Period 4 VII. Pennsylvanian Period 4 VIII. Mississippian Period 4 IX. Lost Interval 5 X. Ancient Life of the Great Lakes Basin: Precambrian to Pleistocene The purpose of this report is to provide an
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what size its body parts were. Here are the main steps in fossil formation: Animals are quickly buried after their death by sinking in mud or sand. Over time‚ more and more rocks and various sediments cover the remains. Parts of the animal or the entire animal that do not rot are covered by new sediments. Some parts of the dead animal (that do rot or get eaten by other animals) turn into fossils over time. After long periods of time‚ the chemicals in the buried animal’s body change. As the animal’s
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Mangrove trees aid on coast with erosion/storm damage. Intertidal Zone: narrow band of coastline between the levels of high and low tide Coral Reefs: most diverse‚ in shallow waters‚ Symbiotic relationship with algae‚ challenged by pollutants and sediments. When algae dies‚ Coral Bleaching occurs. coastal zone- away from shore photic zone(euphotic)- sunlight can penetrate aphotic zone(bathyal)- sunlight cannot penetrate benthic
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At a granular level‚ rocks are composed of grains of minerals‚ which‚ in turn‚ are homogeneous solids formed from a chemical compound that is arranged in an orderly manner. The aggregate minerals forming the rock are held together by chemical bonds. The types and abundance of minerals in a rock are determined by the manner in which the rock was formed. Many rocks contain silica (SiO2); a compound of silicon and oxygen that forms 74.3% of the Earth’s crust. This material forms crystals with other
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What causes ASS? ASS are any material or sediment that contains iron sulfides that‚ when disturbed or drained‚ forms sulfuric acid. In most cases‚ the iron sulfide present is pyrite (FeS2‚ also known as Iron (IV) Sulfide). This pyrite is very reactive. It is usually the smaller crystals of pyrite found in ASS. The pyrite reacts with oxygen to create sulphuric acid (therefore disturbing the soil creates the acid‚ as the pyrite is exposed to the air). The smaller pyrite framboids (raspberry shaped
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Explain the operation of the rock cycle with reference to the geology in Hong Kong. To what extent are the rock types responsible for the deep weathering profile in the territory? Hong Kong is dominated by igneous rocks which granite takes up the largest proportion of 85% of the total land area. The remaining area is underlain by sedimentary rocks superficial deposits mainly in the North West area. Other than the above rock types‚ there still a kind of rock which covers only a small area of Hong
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