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Foliation - ANSWERS* Planes of minerals formed in response to stress * A feature of many metamorphic rocks * crystals rearrange into layered planes depending on the type and orientation of the stress during metamorphism Foliation planes are recognized by: - ANSWERS* The preferred orientation of minerals * alternating bands of different minerals * the flattening and stretching of minerals * foliation forms by physical rotation of preexisting minerals Non-foliated rocks are named primarily a...

Compared to low-grade metamorphic rocks, high-grade rocks _____. (a.) always contain more quartz and feldspar (b.) are produced closer to the surface, high in the stratigraphic column (c.) are produced at greater temperatures and pressures (d.) are produced at cooler temperatures, but greater pressures - ANSWERS(c.) are produced at greater temperatures and pressures Two common metamorphic rocks that typically lack foliation are _____. (a.) slate and phyllite (b.) gneiss and migmatite (c....

When does metamorphism occur? What does metamorphism include? Meta. rocks compare to Ig. and Sed. rocks? Does Metamorphism have a solid/not solid state? What are these two types of changes? - ANSWERSOccurs at elevated temperature and pressure, typically at the base of mountains Includes Recrystallization, making new minerals from original minerals, and sometimes, changes in the texture of the Parent Rock (protolith). Metamorphic rocks are organized compared to Igneous and Sedim...

Inorganic chemical sedimentary rocks are derived from: - ANSWERSthe dissolved products of chemical weathering that precipitate from solution Detrital sediment texture is identified on the basis of: - ANSWERSthe size, shape, and arrangement of the particles Which of the following statements concerning the formation of coal is NOT true? a. coal is composed primarily of the remains of microorganisms b. organic matter changes from peat, to lignite, to bituminous coal, and finally into anth...

________ is the process where a rock changes form or mineral content as a result of environmental changes such as heat and pressure. - ANSWERSMetamorphism What is the definition of a parent rock? - ANSWERSThe rock that was altered by metamorphism Which of the following is the parent rock for quartzite? -Sandstone -Granite -Conglomerate -Limestone - ANSWERSSandstone Which low-grade metamorphic rock will display fine rock cleavage and contains very fine grains of mica? - ANSWERSSlate ...

Metamorphism brings changes in mineral arrangement and the texture of rocks, but it never leads to new mineral assemblages. A. true B. false - ANSWERSB A buried body of shale is subjected to differential stress at temperatures greater than 200 C, causing clay minerals to grow in preferred orientation and producing slate. This is an example of _______________. A. diagenesis B. erosion C. metamorphism D. weathering - ANSWERSC Clay minerals within a buried body of shale are recrysta...

contact metamorphism - ANSWERSoccurs when a magma chamber intrudes the surrounding rock; the heat from the magma metamorphoses the surrounding rock regional metamorphism - ANSWERSoccurs when pressure builds up in rock that is buried deep below other rock formations or when large pieces of the Earth's crust collide with each other (the increased pressure and temperature causes rock to become deformed and chemically changed) Metasomatism - ANSWERSVery hot, element-rich waters cause metamo...

rock cycle - ANSWERSa series of processes on the surface and inside Earth that slowly changes rocks from one kind to another migmatite - ANSWERSfoliated, ultra high-grade metamorphic rock with clear layers and large grains/bands gneiss - ANSWERSfoliated, high-grade metamorphic rock with visible mafic and felsic minerals schist - ANSWERSfoliated, high-grade metamorphic rock that has visible micas and has medium to large, flat, sheet-like grains in a preferred orientation contact metam...

foliation - ANSWERSSlaty cleavage, schistosity, and compositional banding are all examples of ___________. slaty - ANSWERS______ cleavage: parallel foliation of fine-grained platy minerals; produces the rocks slate and phyllite. schistosity - ANSWERS________ - the layering in a coarse grained, crystalline rock platy - ANSWERSMuscovite and Biotite are an example of _______ mineral grains. gneiss - ANSWERSMineral Banding (________) - The layering in a rock in which bands or lenses of G...

form at specific temperatures as a magma cools. At the higher temperatures associated with mafic and intermediate magmas, the general progression can be separated into two branches. How do porphyritic-textured igneous rocks form? - ANSWERSPorphyritic rocks are formed when a column of rising magma is cooled in two stages. In the first stage, the magma is cooled slowly deep in the crust, creating the large crystal grains, with a diameter of 2mm or more. Which lines get closer together as the...