METAMORPHIC ROCKS Rocks that form from other pre-existing rock (sedimentary, igneous, or metamorphic) that have been changed from high temperature and/or high pressure – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 67f87d-ZDczO The deeper the rock is buried the hotter it gets, and the higher the pressure becomes. Andesite. Check all that apply ... - metamorphic rock. metamorphic rocks Table 4–3 Hardness and unconfined compressive strength of rock 4–5 materials Table 4–4 Dry density (unit weight) 4–6 Table 4–5 Weathering terminology 4–6 Table 4–6 Cementation chart 4–6 Table 4–7 Rock color 4–7 Table 4–8 Particle-size descriptors for sedimentary and pyroclastic 4–8 rocks Igneous Rocks: Photos, descriptions and facts about intrusive and extrusive igneous rocks. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. Metamorphic Rock Chart 62. Granite. Gabbro. 3. What causes rocks to change? Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Rocks: Igneous, Metamorphic and Sedimentary Rocks hold the history of the earth and the materials that will be used to build its future. Breccia; Breccia is a clastic sedimentary rock that shaped from angular and boulder size clasts cemented or in a matrix. sydney drew a flow chart to illustrate the nitrogen cycle. Obsidian. The angular shaped of clast show that they have not been transported from their source. Variscite. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. Mineral A naturally occurring, solid, inorganic element or compound, with a definite composition (or range of compositions), usually possessing a regular, internal crystalline structure. Compare the characteristics of igneous, sedimentary, and metamorphic rocks. Students record rock characteristics in the data table. Foliated Textures. Hence, the study of metamorphic rocks provides an understanding of the pressure and … Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth’s crust. I explain that the symbols are types of igneous or sedimentary rocks, but when magma intrudes into sedimentary rock layers, it's capable of "baking" the rock, ultimately turning it into a type of metamorphic rock. A metamorphic rock, on the other hand, began as a rock—either a sedimentary, igneous, or even a different sort of metamorphic rock. Variscite is a yellowish green to bluish green mineral. Geology Rocks: Y-Chart Skills Objectives Identify different types of rocks. Students internalize some basic facts about sedimentary rocks using the reference table, and then learn how to use the information in the reference table to glean necessary information. The following is a list of rock types recognized by geologists.There is no agreed number of specific types of rocks. Foliated (Increasing Temperature and Pressure Going Down the Table) Fine-grained rock that tends to split … Three Types of Rock Igneous, Sedimentary, Metamorphic Rock A solid, cohesive aggregate of grains of one or more MINERAL. The simplest planar features may be primary bedding (akin to the layering in sedimentary rocks). Be sure that your chart is clear and creative! As per Wikipedia, “”Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means “change in form””.The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (1500 bars), causing profound physical and/or chemical change. Metamorphic rocks 1. Luster is how a rock shines. After your chart has been created, your group will create pictures that visually depict how each type of rock … Dr. V. R Ghodake Sinhgad College of Engineering, Vadgaon(Bk), Pune. Once the texture and mineral composition of the rock has been determined, turn to the metamorphic rock determination chart that follows to determine the basic name of the rock. It is similar to turquoise and cut as a gem. Serpentine - metamorphic rocks used in construction, architecture and lapidary work. Contact metamorphism is the name given to the changes that take place when magma is injected in the surrounding solid rock (country rock). Key concepts include c) metamorphic rocks. Diabase. Some rocks look silky, greasy or waxy. Provide students with some information to classify the rocks as sedimentary, igneous or metamorphic, such as a textbook, website material or verbal explanation. Which labels best complete the flow chart ... From which sources do metamorphic rocks form? Pumice. Once information has been shared, a chart will be created by each group explaining what each type of rock is, how it's formed, characteristics, and so on. This chart depicts metamorphic rock types, their texturture, grain size, and characteristics. There are two main types of metamorphism. Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. metamorphic rocks; these rocks will simply have to be given the basic name as determined from the metamorphic rock chart. Dacite. Foliated (Banded) Metamorphic Rocks. Diorite. Change in Texture: In the process of metamorphism the size, shape and the spacing of the crystals or grains in the rock undergo changes. After 5 minutes, ask questions from the flow chart to guide students to the correct rock name and chart the results. Email- vyanky.g@gmail.com Mobile- 9764484757 2. The important characteristics of metamorphic rocks are the following: i. Rocks begin to change chemically at temperatures above 200° Celsius. There are numerous modes of formation for breccia. Regional Metamorphism. They are altered or changed beyond their recognition, i.e. Basalt. Foliation is described as the existence or appearance of layers. Typically this will be initially described as foliated or non foliated. Schist is available in black, blue, brown, dark brown, green, grey, silver colors. Metamorphic Rocks: Igneous, sedimentary, and metamorphic rocks are the three types of rocks that are found on Earth. Metamorphic rocks also are the rock type found at the core of the world's various mountain ranges. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type. Metamorphic Rocks Strand Rocks Topic Investigating Metamorphic Rocks Primary SOL ES.5 The student will investigate and understand the rock cycle as it relates to the origin and transformation of rock types and how to identify common rock types, based on mineral composition and textures. In this texture, the mineral crystals in the rock are aligned with each other. Rhyolite. Metamorphic rock - Metamorphic rock - Major features: The most obvious features of metamorphic rocks are certain planar features that are often termed s-surfaces. buried in the earth under layers of other rock. Rocks can be deformed and warped due to plate tectonics, compression ,stress, and shearing forces over long periods of time. Igneous. It also reveals the parent rocks (either igneous or sedimentary rock). Peridotite. Lab #16 Metamorphic Rocks INTRODUCTION: Metamorphic rocks are rocks that form from other rocks due to exposure to heat, pressure or chemical change. Metamorphic Rocks Metamorphic rocks form when existing rocks are exposed to intense heat and/or pressure inside the earth These intense conditions will alter the rocks, changing (morphing or recrystallizing) them into a new rock. The shape of the rock may be round, square or rectangular. FIGURE 6.1 The characteristics of metamorphic rocks are shown on three different scales. Geology Tools. Rhombs, 3 cleavage planes (not 90), H=3. The conditions required to form a metamorphic rock are very specific. Each shows features resulting from strong Each shows features resulting from strong deformation and solid-state recrystallization caused by changes in temperature, pressure, or fluid composition. Occurs over large areas Using the chart in their ESRT, they can identify the specific metamorphic rocks that are formed from particular sedimentary rock forms. Which characteristic is one of the three main characteristics used to classify igneous rocks? Igneous and sedimentary rocks mainly undergo this change and become metamorphic rocks. Double refraction (2 images visible through clear sample). texture. Heat is an important agent in the metamorphic modification of rock. Table 11.1: Summary Chart of Metamorphic Rocks Discussed in this Chapter: Texture: Characteristics: Protolith: Metamorphic Rock Name . If it doesn't shine, it is considered dull. The three major classes of rock are igneous, sedimentary, and metamorphic rock. Calcite CaCO 3 49 Igneous Rock Aphanitic -- Vesicular (<50%) -- Light Grey You might think of the rock as being baked, squeezed, or both, and in the process becomes a metamorphic rock. Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans. 4 56 Mineral (Carbonate) Not metallic -- Bubbles in HCL. Then, due to various conditions within the Earth, the existing rock was changed into a new kind of metamorphic rock. Eventually, the rock must adjust to the conditions of this new environment. 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