inside the Earth Igneous rocks- the result of crystallization or freezing of magma (molten material) Sediment- Material (such as gravel‚ sand‚ mud‚ and lime) that is transported and deposited by wind‚ water‚ ice‚ or gravity; material that is precipitated from solution; deposits of organic origin (such as coal and coral reefs). Sedimentary rocks- rocks made up of pieces of other rocks. We call the pieces of rock "clasts" (Clast means "broken piece"). A clast is a piece of rock broken off of another
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Assignment 1: Minerals and Rocks Critical Thinking. Use complete sentences‚ correct spelling‚ and the information presented in Chapters 2 and 3 to answer the questions below. 1) Overall‚ the physical properties of minerals provide a reliable means to identify common minerals. However‚ certain properties can exhibit a range of characteristics or values making them less useful for identification purposes. Choose three physical properties that might vary considerably between samples of the same
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Continental Drift? -Distribution of: -Mtn. Belts/ Rock types/ Structures Ex: Appalachian Mountains one large continuous mtn. belt US->Canada-> N. Europe -Tillites: sedimentary material dumped by a glacier turned into a rock Dinosaurs: - Mesosaurs (similar)/ Mammals (different) -Glossopteris flora (similar) Glaciation: -Can move at a rate up to 6 ft. a yr. -Striations- pebbles in bottom of glaciers scraping/polishing/marking rocks the pass How did Wegner propose the continents
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chemical and structural adjustments in solid rocks to physical and chemical conditions which have been imposed due to changes in pressure and temperature or both. Metamorphism occurs below the surface zones of weathering and cementation. Conditions of metamorphism differ from the conditions under which the rocks in question were originally formed. Metamorphism produced as a result of the progressive increase in temperature and pressure‚ i.e. by burial of a rock within the earth‚ is termed prograde metamorphism
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GENERAL SCIENCE POINTERS BASIC CONCEPTS AND LAWS Science and Technology Science - is a systematic study that is concerned with facts and principles‚ and methods that could be observed in our natural or physical and social environment. It comes from the Latin word ’scire’ that means ’to know’. - is both a body of knowledge and a process – away of thinking‚ a way of solving problems The Branches of Science THE PHYSICAL SCIENCES • Physics: The study of matter and energy
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we’ll make sure we know what these terms mean. Igneous and metamorphic rocks: igneous – rocks that have formed from the cooling of magma. Metamorphic rocks are rocks that have been altered. Amphibole etc. These are types of minerals that are part of the recipe of igneous rocks. Plutonic: cooled beneath the earth surface Felsic: more feldspar mineral and more silica Mafic – more magnesium and iron rich minerals. Peridotite – the rock that forms in the mantle – lots of minerals olivine
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the Lab Exercise‚ Step 2. Record your answer to Lab Exercise‚ Step 2‚ Question 11. How long ago was the igneous rock in rock unit B formed? A. 352 mya B. 380 mya C. 704 mya D. 1408 mya Answer Key: A Question 2 of 31 3.0/ 3.0 Points Record your answer to Lab Exercise‚ Step 2‚ Question 12. How long ago was the igneous rock in rock unit C formed? A. 70.4 mya B. 140.8 mya C. 352 mya D. 704 mya
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Well‚ Earth hasn’t been moving vigorously but it is changing at a steady rate. New geological features‚ rock formations‚ and locations of plates all rise and demolish some in a lifetime and others over a span of millions of years. Earth is dynamic; it constantly progresses and doesn’t rest. Through the churns and molds‚ the twists and turns‚ Earth is active because of plate tectonics and the rock cycle. The ideas and theories that make up plate tectonics have shown Earth’s dynamism. The position
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grassland like a rock protector. It was named our first national monument by President Theodore Roosevelt in 1906. This landscape is surrounded by sedimentary rocks‚ which are rocks that are formed from by the deposition of materials at the Earth’s surface. The rock layer that is visible in the Devil’s Towner is called the Spearfish Formation. It is a reddish color because of the dark red sandstone and the maroon siltstone. The oxidation of iron in this causes the redness. These rocks were the oldest
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A-CN-K (Al2O3- (CaO*+Na2O)-K2O) diagram A–CN–K ternary plot is useful tool to evaluate weathering trends in the source rock and to estimate K-metasomatism [Nesbitt and Young (1982‚ 1984); Fedo et al.‚ 1995]. The ideal weathering lines are parallel to A-CN boundary because the removal rates of Na and Ca from plagioclase are greater than the removal rate of K from k-feldspars. On the A–CN–K ternary plot (Fig.6.16) the samples are plotted more or less close to A - K boundary indicating that removal
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