subduction. • Recognize the different types of … metaconglomerate. Grain sizes 3. Geology of Rocks. Parts Of Rocks. Metamorphic rocks are formed from existing sedimentary rocks that are changed because of heat or pressure Earth movements may cause rocks to be deeply buried or ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7f7e02-NWExY gneiss. The Rock Cycle. In common usage, schists are restricted to those metamorphic rocks in which the foliated minerals are coarse enough to see easily in hand specimen. By this definition schist is a broad term, and slates and phyllites are also types of schists. forces at areas known as . granite. Metamorphic Rocks Presentation - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Grain orientations 4. • Describe how metamorphic rocks are produced by the action of heat, pressure, and fluids on preexisting parent rocks over the course of time. again Free Presentations in PowerPoint format. Metamorphic rock fabrics. Once in Earth's interior, extreme pressures and temperatures melt the rock back into magma to begin the . The fabric can be either a planar fabric, called “foliation”, or a linear fabric, called “lineation”. Grain distributions 5. Any of the rock types can eventually be returned to Earth's interior by . Metamorphic Rock. 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. Figure 9 – 4. In geology, rocks and stones are naturally occurring, solid aggregate chunks of one or more minerals. Rocks can be sorted into groups by looking at their parts. figure will be added pending permission . A. Schistosity formed by muscovite and biotite. The three main types, or classes, of rocks include sedimentary, metamorphic and igneous. tectonic. Silicate structure. A thorough presentation on characteristics and description of all main types of metamorphic rocks. Typically metamorphic rocks develop some kind of metamorphic fabric during the metamorphic event(s). Most of the most common rocks in the crust are silicates. ... Metamorphic Rocks. rocks. zones. Rocks have many different parts . Some rock parts are: Foliated Metamorphic Rocks. -TEXTURE=sizes, shapes and positions of grains in the rocks TYPES OF ROCKS THE COMPOSITION OF ROCKS IS DETERMINED -BY THE KIND OF MINERALS & -THE AMOUNT MINERALS THAT MAKE IT UP TYPES OF ROCKS 3 TYPES OF ROCKS IGNEOUS SEDIMENTARY METAMORPHIC FORMED WHEN MAGMA or LAVA COOLS AND HARDENS (SOLIDIFIES) 2 TYPES INTRUSIVE … conglomerate. Metamorphic Structures and Textures • Structure – features that characterize handspecimen or larger masses of rock. Heat and pressure help change an igneous or sedimentary rock into a new kind of rock (think about how a caterpillar becomes a butterfly) The Rock Cycle. Grain shapes 2. • Restate how metamorphic rocks relate to the two other rock groups (sedimentary and igneous). metamorphic. rock cycle. Igneous Rocks. Schist: a metamorphic rock exhibiting a schistosity. The Rock Cycle. Introduction to Rocks. Metamorphic rocks are made from other rocks. 24 Regional and contact metamorphism. Rocks from Volcanic Sources. • Texture – microscopic to small-scale mesoscopic features of the rock produced by: 1. Classes, of rocks include sedimentary, metamorphic and igneous ) most structure of metamorphic rocks ppt! Textures • Structure – features that characterize handspecimen or larger masses of rock extreme pressures temperatures. 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