1. Compare the age of igneous rock found near the mid-ocean ridge with that of igneous rock found farther away from the ridge. The ages of the igneous rock found near the mid-ocean ridge was younger than the igneous rock found farther away from the ridge. This is because of convection currents. Magma rises because it is less dense. It is forced out of the ridge‚ it spreads apart‚ and when it cools‚ it becomes new seafloor. This is why newer seafloor (igneous rock) is younger when it is closer to
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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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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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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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What Makes Rocks and Gems Different? By: Morgan Bellile Have you ever found a beautiful gem? Have you ever wondered what is in rocks? Did you know that red diamond is one of the most rare types of gems? Rocks and gems both have something in common‚ but have you ever wondered what makes rocks and gems different? Gems Gems are also known as precious stone‚ jewels‚ or just stone. What is a gemstone? A gemstone is a piece of mineral crystal‚ when the gem is cut and polished‚ it is normally used for
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designing and using spreadsheets * provide appreciation of the historical origins of an important concept in geology Introduction An understanding of the process of magmatic differentiation is essential to the study of the petrology of igneous rocks. Students at Macalester College typically first encounter this concept in the introductory geology course when they learn about Bowen’s reaction series and fractional crystallization. After a brief introduction to phase diagrams in the mineralogy
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extends nearly 1‚500 miles from northeastern Alabama to the Canadian border.; They are old‚ complex mountains‚ eroded from much older and greater ranges. The present topography is a result of erosion that has carved the weak rocks away‚ leaving a skeleton of resistant rocks behind as highlands. Because of this weathering‚ geologic differences are refelected in topography. In the Appalachians these differences are sharply demarcated and neatly arranged‚ so that all the major subdivisions except for
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A rock is another rocks raw materials‚ meaning rocks that dinosaurs used to step on‚ are what make up the rock we use to skip on the lake. The quick and simple way to answer how that could be true is‚ the rock cycle‚ but the rock cycle is actually very complex. It involves the formation and deterioration of rocks also it is connected with many of the other cycles in the earth. The rock cycle shows “one rock is the raw material for another” due to rocks going through three different phases: igneous
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a solution remains unsaturated‚ mineral crystals may precipitate False Magma is often a slushy mix of molten rock‚ gases‚ and minerals crystals True The elements found in magma are quite different from those found in Earth’s crust False Silica is the most abundant command found in magma True Magmas are classified as basalt‚ andesitic‚ or rhyolitie True In the laboratory‚ rocks must be heated from 8000 C to 12‚000 C before they melt False Heat in the upper mantle and lower crust may come
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Metamorphic Rocks Axia College of the University of Phoenix Metamorphic rock is the transformation of an existing rock type in a process called metamorphism‚ which means change in form. Metamorphic rocks make up a large part of the Earth ’s crust and are classified by texture and by chemical and mineral assemblage (Murck‚ Skinner‚ & Mackenzie‚ 2008). Metamorphic rocks started out as some other type of rock‚ but have been substantially changed from their original igneous‚ sedimentary‚
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