Dec 10, 2016 - Explore bbt900's board "METAMORPHIC ROCKS" on Pinterest. Get more information about main rocks like Slate, Marble, Schist, Gneiss, Quartzite. The platy layers in this large outcrop of metamorphic rock show the effects of pressure on rocks during metamorphism. Amphibolite. Metamorphic rocks start off as igneous, sedimentary, or other metamorphic rocks. We know diamonds form deep in the earth where the earth’s lower crust and its upper mantle meet. Mariposite. Label the three coloured areas of the map with the appropriate zone names (garnet, chlorite, and biotite). During metamorphic action, the pressure on rock can reach 50 thousand pounds per square inch. Fill in the metamorphic rocks corresponding to each protolith in the following table. … Foliated rocks have platy or elongate minerals aligned in roughly parallel planes or in wavy bands or planes. View source . Read this ScienceStruck article to gain extensive information about the main features of these rocks. 7.2 Classification of Metamorphic Rocks There are two main types of metamorphic rocks: those that are foliated because they have formed in an environment with either directed pressure or shear stress, and those that are not foliated because they have formed in an environment without directed pressure or relatively near the surface with very little pressure at all. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes. Metamorphic rocks are like probes that have gone down into the Earth and come back, bringing an record of the conditions they encountered on their journey in the depths of the Earth. Metasomatic rocks are considered a subgroup of metamorphic rocks. Below the table is a classification showing the relationships among the metamorphic rocks. Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ‘clastic’ sedimentary rocks); by the accumulation and the consolidation of sediments; by the deposition of the results of biogenic activity; and by precipitation from solution. Gneiss : composed of quartz, feldspar and mica. Cases of incomplete autoposting are marked on both. Metamorphic Rocks. Rock: A solid mass comprising one or more than one mineral as its constituent is termed as the rock. Quartzite : hard metamorphic broken with high quartz content. Lapis Lazuli. It is a hard crystalline rock and has many uses. Anthracite. The preexisting rocks may be igneous, sedimentary, or other metamorphic rocks. For example: A rock composed of 60% muscovite and 40% biotite, both occurring as interlocking platy grains - a schistose (schist-like; schists are a group of medium-grade metamorphic rocks) texture - is called a muscovite-biotite schist. In the lab, we make diamonds at 3,000 degrees Celsius and pressure that measures 50,000 pounds per square inch. Rock cycle means the process by which rocks are formed, degraded and reformed by the internal geological processes like plutonism, volcanism, uplift etc and/or by external geological process like erosion, weathering, … 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. Like water cycle, there exist rock cycle (geological cycle) in geology. Its basic component is calcium carbonate. Chapter 1 / Set (46 cards) Cards; Course; Try it risk-free for 30 days Metamorphic Rocks List & Flashcards Study 46 cards × 1. Metamorphic rocks can be divided on the basis of their metamorphism – regional, thermal, hydrothermal, and fault zone metamorphism. Metamorphic grade is a general term for describing the relative temperature and pressure conditions under which metamorphic rocks form. Also get details about their Definition, Origin, Formation Process, Textures, Colors etc here. The term petrology may be used in papers pertaining to the discipline. Hornfels. Metamorphic rocks are formed by existing igneous or sedimentary rock material that has undergone a chemical or physical change due to heat and pressure. Texture In metamorphic rocks individual minerals may or may not be bounded by crystal faces. Remember that all of the igneous minerals can also occur in metamorphic rocks. Here, we will have a look at some related facts, and also the various types of metamorphic rocks. Slate is a good roofing material, but people also use it for decorative gardening stones, as a base for snooker tables and it was used as a writing board (or writing slate) in the Victorian classroom. Marble is limestone that has undergone some changes. This heat and pressure changes the rock into a denser form, which is the main characteristic of metamorphic rock. Extra review questions that may be covered in lecture (depending on your professor) that are … More information. Metamorphic rocks and processes • Metamorphism comes from the Greek words “Meta” - change “Morphe” - form • Metamorphic rocks form by solid-state (no melting) transformation of preexisting rock by processes that take place beneath Earth’s surface. Other common metamorphic rocks are called marble, gneiss, schist. Their study provides us with important data regarding formation of the Earth and the past geological environment. Gneiss. Metamorphic rocks can be formed from sedimentary, igneous and even other metamorphic rocks. To name a metamorphic rock, the mineralogy is listed (in decreasing order of abundance) and then the rock is given a suffix relating to its general texture. Marble. Metamorphic rocks are rocks that have changed from igneous rocks or metamorphic rocks. Eventually, the names in the classifiction will be clickable to a picture/description. Metamorphic rock is one of the 3 major classes of rock comprising the Earth's crust, the others being SEDIMENTARY and IGNEOUS ROCKS.Metamorphic rock has been transformed, while in the solid state, by pressure, temperature and deformation. Metamorphic rocks can be formed by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates. Source: Joyce M. McBeth (2018) after Karla Panchuk (2018) CC-BY 4.0. Piece of slate, metamorphic rock. Metamorphic Rocks List & Flashcards. Metamorphic rocks are the third great class of rocks. Those shown here are either rare or absent in igneous rocks, the minerals look somewhat different because of their metamorphic petrogenesis, or if I just like them. The four main agents that metamorphose rocks are heat, pressure, fluids, and strain. Metamorphic Rock. A metamorphic rock is a result of a transformation of a pre-existing rock. These rocks are changed when heat or pressure alters the existing rock’s physical or chemical make up. (Foliated means the parallel arrangement of certain mineral grains that gives the rock a … Sorted by name; initial letter means Igneous, Sedimentary or Metamorphic rocks.. A I Andesite – an intermediate volcanic rock M Anthracite – a form of hard coal B S Banded iron formation – a fine grained chemical sedimentary rock composed of iron oxide minerals S Bauxite – the main ore of aluminium.It is mostly aluminium oxide. Marble : compact metamorphic rock that evolved from limestone rocks subjected to high temperature and pressure. One ways rocks may change during metamorphism is by rearrangement of their mineral crystals. The shaded areas are metamorphic rock, and the three metamorphic zones represented are garnet, chlorite, and biotite. Examples of these rock types include marble, slate, gneiss, schist. Low-grade metamorphism takes place at temperatures between about 200 to 320 o C, and relatively low pressure. Uplift and erosion help bring metamorphic rock to the Earth's surface. For this reason, metamorphic rocks can take on all types of colors and textures. All types of Metamorphic Rocks + have a variety of uses and many unknown and interesting facts. 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