Carbonate Rocks and Dunham’s Classification Palkowski‚ Daniel N. 245-002 General Geology Dr. Wayne Schlipp 9 December 2007 Abstract The following contains a compendium of research on carbonate rocks. Displayed are a basic description of carbonate rocks‚ depositional environments‚ mineralogy‚ ancient and modern reefs‚ diagenesis‚ facies analysis‚ and classification. Most carbonate rock classification schemes take into account characteristics that may require intensive microscopic
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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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Earth’s natural occurrences. From volcanoes to earthquakes plate tectonics play are large role. Another natural occurrence that is not is discussed as much as volcanoes and earthquakes is the formation of sedimentary rock. Plate tectonics also plays a major role in the formation of this type of rock. Plate tectonics is a term that is used to describe how the different plates that make up the Earth move and the reactions that occur as they are moving. Before explaining how plate tectonics are related
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Igneous Textures Cooling rates influence igneous rock textures. Rapid cooling at the earth’s surface results in tiny mineral crystals that can only be seen under a microscope. The resulting extrusive igneous rocks have an aphanitic texture. Rocks that form as magma cools slowly underground (intrusive igneous rocks) develop phaneritic textures‚ in which individual mineral crystals can be seen without a microscope. Some igneous rocks exhibit visible crystals (phenocrysts) in a matrix of tiny
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Associate Level Material Sedimentary Rock Worksheet Use the following table to describe and distinguish between the effects of weathering and erosion. Each response must be at least 200 words. |Effects of Weathering |Effects of Erosion |What are the Differences? | |Weathering breaks down and decomposes |Erosion removes materials from the surface |The difference between weathering and | |rocks. There are chemical and mechanical
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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‚ followed
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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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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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Sedimentary rocks from the Barberton greenstone belt‚ South Africa Abstract The Barberton greenstone belt in South Africa represents one of the best preserved successions of Archaean rocks. The rock sequences have experienced low grade metamorphism‚ which makes them ideal to study because the effects of alteration and secondary minerals are relatively small. The sedimentary rocks of the Fig Tree Group obtained through the drilling project “Peering into the cradle of life” are analysed for their
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Petrology 2 Sedimentary Petrology Assigned to : • Amaro‚ Elfe C. • Balansag‚ Imee S. Research Paper Outline 1. Origin and Formation a. How did sediments and sedimentary rocks originate? b. What are the four (4) components or earth materials that make up or constitute sedimentary rocks? c. What are the major types of basins on which sediments accumulate and form sedimentary rocks? 2. Identification a. How do we describe sedimentary rock types?
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