"Igneous Rock" Essays and Research Papers

Igneous Rock

following table to compare extrusive and intrusive rocks. Describe and compare each type in at least 150 words. Extrusive Rock Intrusive Rock Extrusive rocks are also called volcanic rocks and extrusive rocks are formed on the earth’s surface. Extrusive rocks also form from magma, but a form of lava. Magma flows onto the earth’s surface by an eruption by a volcano. When the magma hits the earth’s surface, the magma turns into lava. Extrusive rocks are formed by lava, and the lava will harden quickly...

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Igneous Rock and Yosemite National Park

Island. Lakes, ponds, streams, hiking trails, and roads are some of the many features that attract tourists. Nearly all the landforms in the Yosemite area are cut from a mass of intrusive igneous rock that formed below the surface of the earth. Some of the park’s landforms are metamorphosed volcanic and sedimentary rocks. Erosion that acted upon different types of uplift is responsible for creating the valleys, canyons, domes and other features found in this national park. Some of the popular features...

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Igneous Rock

Igneous Rocks Igneous rocks originate from deep within the Earth’s crust. Igneous rocks (from the Greek word for fire) are formed when magma crystallizes and solidifies. An increase in temperature, a change in the composition, or decrease in the pressure can cause melting of these rocks in the mantle which form igneous rocks. The melt begins deep below the surface of the Earth close to active plate boundaries. As the temperate increases the rocks rise toward the surface. Igneous rocks are divided...

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Volcanic Assignment

the hot lava fragments and clouds of dust erupting from Vulcano came from Vulcan's forge as he beat out thunderbolts for Jupiter, king of the gods, and weapons for Mars, the god of war. 2. What is the difference between magma and lava? •Molten rock below the surface of the Earth that rises in volcanic vents is known as magma, but after it erupts from a volcano it is called lava 3. What are the main types of volcanoes? •cinder cones, composite volcanoes, shield volcanoes, and lava domes.  ...

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Module 2

Module 3 (Lesson 6) Lab Quiz Questions 1. What mineral composition is most characteristic of felsic rocks? a. olivine, pyroxene, and calcium-rich plagioclase NO b. orthoclase, quartz, and biotite c. calcium-rich plagioclase and hornblende with some olivine d. particles of volcanic ash welded together 2. What mineral composition is most characteristic of mafic rocks? a. olivine, pyroxene, and calcium-rich plagioclase b. orthoclase, quartz, and biotite c. sodium-rich plagioclase, hornblende...

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Chapter Two Geology

Why earth is a dynamic (continuously changing) and evolving planet Core: Interior part of earth (2parts)INNER CORE small solid&OUTER CORE larger liquid-made of iron& nickel. Mantle: The thick layer between earth’s crust and core.Made of igneous rock(iron/magnesium) Has 3 zones 1.Lower:solid 2.Asthenosphere:The part of the mantle that lies below the lithosphere; it behaves plastically&flows slowly. Partial melting creates magma which rises less dense 3.Upper:Surrounds the Asthenosphere and...

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Geology Course Notes

volcano? 1. Meteor impact will cause movement and depth of rocks. Meteor impact will cause movement and depth of rocks. Test for rocks around the volcano * Meteor Craters form a hole in the ground test for rocks around the volcano * * * * * Salt Dome and Salt GlaciersSalt is Ductile * Caldera Caldera Caldera (huge pits in the ground caused by volcanic eruptions) * Check for lava rocks near the happening * Magma Chamber Magma Chamber January...

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Appalachian

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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Geology Final

principles which are used in relative dating? Superposition, original horizontality, lateral continuity, cross-cutting relationships, inclusions, fossil succession. 4. What are three major groups of rocks? Sedimentary, metamorphic, Igneous. 5. What is the difference between a rock and a mineral? A rock is an aggregate of minerals. Minerals are naturally occurring, inorganic, crystalline solids that have definite physical and chemical properties. 6. How does relative dating differ from absolute dating...

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The Earth Interior

composed of three main parts; the crust, the mantle, and the core as shown in the diagram of the earth's interior below: * The Crust - silicate rocks, primarily granite and basalt * Oceanic Crust - mostly basalt * Continental Crust - igneous, metamorphic, and sedimentary rocks * The Mantle - iron and magnesium rich silicate rocks * Upper Mantle (Asthenosphere) * Lower mantle (Mesosphere) * The Core - iron nickel alloy * Outer core * Inner core ...

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volcanoes

after volcano eruption and after magma cools? Igneous rock forms when superheated volcanic liquid, also called magma, cools and thus hardens through a process of crystallization in one of two manners: by cooling and crystallization on the Earth’s surface such as after a volcanic eruption; or by cooling more gradually through a process of rising as it cools through the magma while still below the Earth’s surface. Scientists further classify such rocks based on their mineral characteristics: pumice...

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Geology

represents a depth within the upper mantle where the melting temperature curve intersects the geothermal gradient (between 100 and 350 km depth). 7. Plate Tectonics. -know the relationship of all three plate boundaries. -what type of igneous rocks form at each respective plate boundary (i.e., basaltic/gabbroic magma at divergent margins from partial melt of asthenosphere; andesitic/dioritic magma at subduction zones from partial melt of ocean crust and associated marine sediment); granitic...

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Igneous rocks: Diorite.

INTRODUCTION. Diorite is an igneous rock formed from the partial melting of the crust caused from by basaltic magma from the mantle. It is associated with batholiths, dikes and stocks usually around volcanic arcs. Its volcanic equivalent is andesite which is formed from strombolian type volcanoes. DISCUSSION Physical properties: Diorite is a phaneritic rock that is speckled black and white/grey with a very variable colour index of between 40 and 90 over short distances. The rock has an equigranular or...

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Ore Genesis

and around the root zones of Mesozoic-Cenozoic Cordilleran fold belts ⇒ emphasize a consistent granitoid – hydrothermal ore relationship. THE CORDILLERAN SITUATION ≡ MODERN ANALOGUE OF THE ARCHAEAN GRANITE – GRANULITE BELT 4. Specificity of ORE – ROCK association: STRIKING in ultra mafics, PROMINENT in mafics, FREQUENTLY CLEAR in felsics and OCCASIONALLY CONSPICUOUS in sediments ⇒ imply common heritage of the ores that persisted through out geological time. 5. On the continental basis, two major...

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earths crust

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 crust is primarily...

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Convection Currents in the Mantle

two plates causing major earthquakes. Sometimes when this plates are pushed together they form fold mountains or ridges. Today we know that the continents are gradually moving apart. Therefore the there is new rocks created in between those areas. New volcanoes are created and new rocks are formed. Plate tectonics allow scientists to know about the earth's centre. The oceanic plate slides under the continental plate because it is heavier. Once it goes under the continental plate it melts into...

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history

the power of volcanoes past and present again hit the headlines A Volcanoes are the ultimate earth-moving machinery. A violent eruption can blow the top few kilometres off a mountain, scatter fine ash practically all over the globe and hurt rock fragments into the stratosphere to darken the skies a continent away. But the classic eruption – cone-shaped mountain, big bang, mushroom cloud and surges of molten lava – is only a tiny part of a global story. Volcanism, the name given to volcanic...

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Endogenetic Process

plateaus, plains, lakes, faults, folds, etc. The origin of Endogenetic forces is related to the thermal conditions of the interior earth. The Endogenetic forces and related horizontal and vertical movements are caused due to contraction and expansion of rocks because of varying thermal conditions and temperature changes inside the earth. The Endogenetic forces and movements are divided, on the basis of intensity, into two major categories: (1) Sudden (2) Diastrophic forces  Sudden forces are the result...

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Igneous Rocks

About the Igneous rocks: The Igneous rocks are the oldest type of rocks among all. The word "Igneous" comes from a Greek word which means fire. In the deepest part of the Earth, the minerals are found in a liquid form, which is known as magma. When the magma pushes towards the surface of the Earth, it starts to get cool and converts into the solid Igneous rocks. The formation of Igneous Rocks: The Igneous rocks are known as the fire rocks and these are generally formed underground or above the...

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Igneous Rock and Ecuador

past information about the geography to figure out the future. For instance, learning how the land has transformed over time in Ecuador may lead to a continuous pattern. Other things that scientists use are tools and techniques. Identifying various rocks and minerals, discovering how the land has been changed, and observing mountain formations and fossils also help to figure out patterns. All of these things allow scientists predict, accurately, what the Earth’s crust will do in the future. Many...

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Rocks

 WHAT ARE ROCKS? What are Rocks? Making up most of the Earth's crust, rocks are usually defined as a mixture of common minerals. Rocks can be hard or soft, as small as a grain or as large as a building. Combined with the effects of weathering and vegetation (vegetation can also weather rock as the tree or bush is "yanked" out of the ground by forces of wind or by merely falling over after it has died.  Root systems tend...

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Rocks

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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Rocks

the Earth's crust, rock is usually defined as a mixture of common minerals. Rocks can be hard or soft, as small as a grain or as large as a building. They have been an integral part of the history of mankind, first being used as tools for hunting and defense, and as a building materials to construct shelters and monuments. Combined with the effects of tectonics, weathering and vegetation, rocks define the natural landscapes we see around us. The minerals and metals we find in rocks are essential to...

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Describe How Igneous Activity Can Affect The Landscape

Describe how igneous activity can affect the landscape Igneous intrusions form when cooling, crystallization and loss of gases cause a once fluid magma to solidify. Most rocks that form intrusions originate as either granitic or basaltic magma. Granitic magmas are low density and small quantities, just a few kilometers wide, rise slowly through the earth’s upper crust, pushing existing country rock aside. However, very large granite masses, which can be up to 1,000 times larger, are formed when...

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Igneous Rocks

Incredible Igneous Rocks Granite is one of the most well-known and commonly found types of igneous rock. Granite batholiths are a common rock type found in Richmond, VA. These larger igneous, intrusive rocks are found near my grandparents’ home in Richmond, and as a child I would constantly climb and play on them. Looking at granite in class always reminds me of these batholiths by my grandparents’ home. Granite consists mostly of the minerals quartz, mica and feldspar, which give granite its typical...

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Rock Cycle

explain how rock cycle operates. How do rocks metamorphose at destructive plate boundary? Rock cycle is a cycle that describes how rocks are transformed. Igneous rock can change into sedimentary rock or metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock. Besides, metamorphism at the destructive plate boundaries creates different characteristics of rocks. Operation of the rock cycle The Rock Cycle ...

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History of Rocks

Level Material History of Rock Worksheet Leah Bechtel 12/09/2012 SCI/245 Robert Dillon Write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. The role of plate tectonics in the origin of igneous rock is extremely important. Igneous rock is formed from magma that reaches the continental and oceanic crust or through hot spots that are around the world. There are three different places where igneous rocks can form; where the lithospheric...

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Metamorphic Rock and Igneous Rocks

STATEMENT: geologists classify rocks based on how the rocks were formed. Rocks can be classified into three categories on the basis of their formation: igneous rocks, sedimentary rocks and metamorphic rocks. I. The first type is igneous rocks (from the Greek word for fire) which are formed from molten rock (magma) and lava. A. Formation 1.coming up of magma through cracks 2. forming a layer on surface or filling other cracks 3. cooling forming a very hard igneous rock 4. magma on the surface...

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Exam 2 Geo 1301

1. What are the major rock groups? -Igneous, sedimentary, metamorphic 2. The Columbia Plateau basalts (floor basalts) issued from fissures, which are now preserved as? -Dikes 3. Remove crystals from an andesitic magma and you will get? -A more felsic residual melt 4. Which of the following types of volcanoes is typically the largest in terms of overall volume? -Shield Volcano 5. What minerals are involved in the continuous part of Bowen’s Reaction Series? -Plagioclase Feldspar ...

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Earth Science

Unit 2: Earth Materials LAB: 2-3 Igneous Rock Identification Vocabulary: Igneous: Produced under the conditions involving intense heat. Intrusive: Igneous rock that forms beneath Earth’s surface. Extrusive: Igneous rock that forms at the Earth Surface. Felsic: Igneous rock rich in potassium feldspar and quartz and light color. Mafic: Igneous rocks that are rich in dark Plagioclase feldspar, pyroxene and...

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Formation of Rocks

Formation of Rocks The three main ways rocks are formed: • Sedimentary rocks are formed through the gradual accumulation of sediment: for example, sand on a beach or mud on a river bed. As the sediment is buried it is compacted as more and more material is deposited on top. Eventually the sediment will become so dense that it is essentially rock. This process is known as lithification. • Igneous rocks are rocks which have crystallized from a melt or magma. The melt is made up of various components...

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Intro to Structural Geology Exam I

100-200 km e) 1200 km 8) Continental Crust is ________ than Oceanic Crust: a) b) c) d) e) Thicker Less dense More felsic All of the above None of the above 9) Heat and pressure create what type of rocks: a) Sedimentary b) Metamorphic c) Igneous 10) Sedimentary rocks are formed by the lithification of sediments. a) True b) False 11) The fundamental components of the theory of plate tectonics state that: a) The outermost shell of the earth consists of a rigid lithosphere composed...

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Metamorphic Rock

Metamorphic Rock Metamorphism means to change form; this is exactly what metamorphic rocks do. This paper will take a look at the Earth’s rock cycle to examine exactly where the metamorphic rock fits into it. It will also look at how metamorphic rocks are formed and the relationship between metamorphic rocks and igneous rock and sedimentary rocks. This paper will examine the geological characteristics and materials of metamorphic rocks, and examine some examples of metamorphic rocks and will describe...

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plate tectonics

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...

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The Rock Cycle

The Rock Cycle & Classification of Rocks The rock cycle is the formation, breakdown and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. The rock cycle is an illustration that is used to describe how the three rock types are related and how Earth processes change a rock from one type to another over time. Each group contains a collection of rock types that differ from each other on the basis of the size, shape and arrangement of mineral grains. Due to the driving...

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Archeozoic Era

Archeozoic Era The Archeozoic Era stretches from about 3.8 billion to 2.5 billion years ago. Traditionally, the beginning of the Archean is defined to coincide with the oldest rocks discovered. As recent discoveries have pushed back the earliest dated rocks to about 4.0 billion years old, the beginning of the Archean has also been pushed back correspondingly. However, most texts still continue to date the beginning to 3.8 billion years ago. As the Late Heavy Bombardment (LHB) ended with the Hadean...

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Earth Science Study Guide

abundant atom is O. 28. Sketch and label a basic rock cycle. Make sure your sketch includes alternative paths between the basic parts, like I drew in class. [pic] 29. What are the processes that take place that convert one type of rock into another in the rock cycle? Melting: Igneous rock convert into Magma Metamorphism: Igneous rock converts into Metamorphic rock Uplift, Weathering, Transportation, and Deposition: Metamorphic, sedimentary rock convert into sediments 30. What is magma? How...

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Geology Exam Questions

Continental Rift A. East Pacific Rise B. subduction zone C. Canadian Shield *D. Mount Kilimanjaro E. Mount St. Helens 18. Earth’s crust is being destroyed at _______ and created at ________. *C. subduction zones, divergent boundaries 19. A felsic rock is formed at relatively ________ temperatures and is the first to ________ when temperature increases during burial. *A. low, melt 21. Native metals tend to have which of the following properties? A. high plasticity B. only one type of bonding ...

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The Formation of Rocks in Ireland

There are three main rock types present in Ireland: Igneous, sedimentary and metamorphic. Igneous rocks are rocks which have crystallized from molten rock. Sedimentary rocks are rocks which have formed due to the gradual accumulation of sediment. Metamorphic rocks are rocks which have once existed as igneous or sedimentary rocks but changed due to great heat or pressure. Over the course of my essay, I will account for five rocks found in Ireland and there probable rock forming conditions. Granite ...

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Geology

Geosphere is earth’s Surface to its center Continental Crust Thicker, variable thickness, and granitic average composition. Oceanic Crust Thinner, more uniform in thickness, and basaltic composition Mantle Most of Earth's volume and mass. Denser rock than crust Core Molten outer core, and solid inner core. Iron and nickel composition. What is the biosphere? All life on Earth What does it mean when we say that the atmosphere, geosphere, hydrosphere, and biosphere are in a state of dynamic equilibrium...

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Thermodynamic Modeling: a Unique Tool to Study Magma Evolution

Equilibrium phase composition of the system is calculated as a function of existing conditions. This article primarily explains the theory and method of thermodynamic modeling as applied to magmatic systems. The use of thermodynamic modeling in igneous petrology as an approach complimentary to the conventional geochemical modeling is also explored. 1|Page Introduction Magmas are the hot molten bodies produced by melting events within solid Earth. Most magmas exist as physically heterogeneous...

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Axia Week 5 Geology

History of Rock Worksheet Write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. | Plate tectonics play a major role in the origin of igneous rocks. Igneous rocks are called fire rocks and are formed either| |underground or above ground. Underground, they are formed when the melted rock, called magma, deep within the earth becomes trapped| |in small pockets. As these pockets of magma cool slowly underground,the magma becomes igneous rocks...

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Upcat Review (General Science)

asteroid belt is simply an early form of the collection of matter that was not able to completely form a planet due to Jupiter's gravity. Some early planets may have collided with other early planets, creating larger planets, moons, or possibly space rocks. In the meantime, a smaller star began to form at the center of the previous explosion and our Sun started its fusion process again. Earth’s Structure The earth consists of several layers. The three main layers are the core, the mantle and the...

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Kinabalu

Kinabalu is essentially a massive pluton formed from granodiorite which is intrusive into sedimentary and ultrabasic rocks, and forms the central part, or core, of the Kinabalu massif. The granodiorite is intrusive into strongly folded strata, probably of Eocene to Miocene age, and associated ultrabasic and basic igneous rocks. It was pushed up from the earth’s crust as molten rock millions of years ago. In geological terms, it is a very young mountain as the granodiorite cooled and hardened only...

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science Mid term

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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Biology a Exam, and Earth Science

paleontology, geochemistry, hydrology and tectonics Lithosphere - rigid outer shell of the planet and includes the solid uppermost part of the layer below the crust, called the mantle          -oceanic crust-dense rock called basalt          -continental crust-less dense rock called granite          -asthenosphere - partially molten layer under the crust with flows like melted plastic Hydrosphere - water in earth's oceans, seas, lakes, rivers, glaciers and atmosphere           -97% salt...

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Consumer Satisfaction

and machine power. Granite, igneous rock of visible crystalline formation and texture. It is composed of feldspar (usually potash feldspar and oligoclase) and quartz, with a small amount of mica (biotite or muscovite) and minor accessory minerals, such as zircon, apatite, magnetite, ilmenite, and sphene. Granite is usually whitish or gray with a speckled appearance caused by the darker crystals. Potash feldspar imparts a red or flesh color to the rock. Granite crystallizes from magma that...

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Chapter 2 Problem 1 17

Scientist believe that the collision of earth with a smaller body caused the earth to tilt on it axis at 23 degrees. The blasting debris is said to have formed the moon. The period from the accretion of the earth to the formation of the oldest existing rocks can be retraced to the stratification or differentiation of the earth. 3. The newest model states that the earth’s outer core to be a very active and move in circulation. This is called plate tectonics. 4. The origin of earth’s magnetic field is...

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Geology: Plate Tectonics and False Question

lithosphere and the internal Earth processes that drive them are referred to as the _____ cycle. | hydrologic | | metamorphic | | tectonic | | rock | Question 2 | | | | Correct. | | | The model that describes the movement of water through the reservoirs of the Earth System is called the _____ cycle. | rock | | hydrologic | | metamorphic | | tectonic | Question 3 | | | | Correct. | | | The formation of Earth and other planetary...

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Chapter 22 Review

crust formed as magma crystallized 7. Subduction continued forming more magma 8. crust weathered 13) Explain how geologists have determined the age of Earth? a) Radio metric dating has determined that the ziron grans in the sedimentary rocks are between 4.1 and 4.2 billion years old. 14) Discuss the relationships among the formation of the continents, the atmosphere and the oceans. a) The relationship between the formation of the continents, the atmosphere and the oceans is the most...

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Process Essay

volcano erupts when pressure on the magma chamber causes the magma to rise and come out together with gas, rocks and ashes. Violence of an eruption depends on how much pressure the volcano is under before it erupts. (How do volcano erupt) “In a volcanic eruption, hot lava spews out from beneath the Earth’s crust up to the Earth’s surface.” The hot lava spewed out is actually magma, hot melted rock. (Why do volcanoes erupt) “Sometimes the magma chamber breaks its sides and only reaches to the flank...

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Big Bend National Park Report

Bend National Park Report 1. What is the depositional nature of the rocks in the study area and how does their lithologic compositions and sedimentary structures record changing water depths, environments of deposition, and paleogeography? Big bend national park has complex rocks that are subsided in two seas hundreds of millions of years ago. Fossil data from the mid to Upper Cretaceous period predicts the sequence of rock strata in Big Bend National Park to be from bottom to top: limestone,...

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Volcanoes, What is a Volcano,The types of volcanoes,How are Volcanoes formed,How is magma turned to lava.

composite volcanoes. These form from quiet eruptions of fluid lava followed by explosive eruptions of viscous lava. How is Magma turned into Lava? Extremely high temperature and pressure cause the rock to melt and become liquid rock or magma. When a large body of magma has formed, it rises through the denser rock layers toward Earth's surface. Magma that has reached the surface is called lava. How are volcanoes formed? Volcanoes are formed when magma seeps through cracks in the earth's crust, and slowly...

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Definitions of Science

where living things are found. Rocks and Minerals Everywhere you look, you find rocks of different shapes and sizes. What is important to remember about rocks is the way they were formed. The varying conditions for the rock formation influence the characteristics that each rock develops, Igneous rocks – formed from hardened magma and lava. e.g. Rhyolite, Granite, Basalt, etc. Sedimentary rocks – form from deposited fragments or particles of other rocks that have been weathered and eroded...

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Geology 101

we’ll make sure we know what these terms mean. Igneous and metamorphic rocks: igneousrocks 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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Mineral Identification: Lab Worksheet

forms into plants and animals). Once the cycle completes the water returns to the ocean. In the result of the rock cycle as shown in the diagram it explains the crustal processes through which rocks are uplifted into the mountains and then ended and the weathered, and the debris are modified and transformed or are reformed into rock underground. The igneous rocks comes from how the rocks are formed and are recycled by a large-scale motions of earth’s surface and the interior. |...

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History of Rock

Write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. To begin, igneous rocks come from magma, and magma is related to plate tectonics. Magmas differ in composition, temperature and viscosity. This is a major identifier of igneous rocks, is that they were once molten and magma Plate tectonics are the theory that the Earth’s lithosphere, which is the outer rigid shell is composed of several different pieces, or “plates” that float on a ductile...

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Assignment: Sedimentary Rocks

Assignment: Sedimentary Rocks * Where do sedimentary rocks originate? Sedimentary rocks are the most common rock on earth. Sedimentary rocks form at, or very near, the Earth's surface where rocks particles transported by wind, water and ice are deposited on dry land, on the beds of rivers and lakes and in marine environments: beaches, deltas and the sea (Sedimentary Rocks, 2001). The earth surface is constantly moving, materials are continually being deposited through various parts of the...

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Notes on Sedementary Rocks

Sedimentary Rocks Define 2 types of weathering? • Mechanical: breaking rocks into smaller chunks o Sediment: clasts (particles or sediment) • Chemical: dissolve mierals or change rock chemistry and make new minerals o Sediment: Ions in solution Which type would result in a conglomerate? • Mechanical. What are the compositions and depositional environments of Coal and Halite? • Coal: o Comp.: plant material o Dep. Environ.: Swamp • Halite: o Comp: NaCl o Dep. Environ.: desert,...

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How The Earth Was Formed

clumps held together by static charge. -These mineral grains grew into small pieces of rock orbiting the sun -over the next few million years some of these rocks collided and grew bigger -when a rock grew to become around half a mile across, its gravitational pull became strong enough to pull objects towards it. (The bigger the rock was the faster it grew because it had higher gravitational pull) -so that biggest rock eventually grew to become ‘the fledgling earth’ -soon this small planet grew to attract...

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