Amorphic - Study guides, Class notes & Summaries

metamorphic rocks - ANSWERSrocks changed from one form to another by intense heat, intense pressure, or the action of watery hot fluids parent rock - ANSWERSthe rock type that was metamorphosed. parent rocks can be any of the three main rock types: igneous rocks, sedimentary rock, or even metamorphic rock sedimentary conglomerate, sandstone, and limestone - ANSWERSmetaconglomerate, quartzite, and marble shale - ANSWERSslate, phyllite, schist, and gneiss hornfels - ANSWERSformed only ...

Marble is a metamorphic rock that forms from a __________ protolith? - ANSWERSlimestone Which of the following processes will cause metamorphism? - ANSWERSan increase in pressure, interaction with hydrothermal fluids, an increase in temperature (all) What is metasomatism - ANSWERSa change in the bulk composition of a rock during metamorphism Where does sea floor metamorphism take place? - ANSWERSin close proximity to mid-ocean spreading centers What is the relation between metamorphi...

Identify the False statement. Hydrothermal fluids...(D) - ANSWERSA) May consist of hot water, steam, and supercritical fluid. B) Are chemically active solutions, not pure water C) Can be derived from groundwater or magma, or can be the product of metamorphic reactions D) Change a rock's chemical composition, a process known as exhumation. Which of the following statements is False? A metamorphic rock...(B) - ANSWERSA) May develop a texture of interlocking grains B) Cannot be formed bel...

A rock experienced melting then cooling, burial to deep depths during mountain building, and then uplift and weathering. Which pathway did this rock take through the rock cycle? - ANSWERSIgneous → metamorphic → sedimentary A rock high in slate and chlorite is likely a(n) - ANSWERSlow-grade metamorphic rock. As they pass through the rock cycle, all atoms - ANSWERSdo not move through the rock cycle at the same rate. During metamorphism, the process that changes the crystal structure o...

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...

acrocentric Refers to the terminal location of the centromere on chromosomes 13, 14, 15, 21 and 22 allelic heterogeneity the situation in which multiple alleles at a singe locus can produce one or more disease phenotypes amorphic Refers to mutations that cause a complete loss of function for the respective gene, and therefore yield the same phenotype as a complete gene deletion Aneuploidy denotes any unbalanced chromosome complement antimorphic Refers to mutations that when present in h...

Compared to low-grade metamorphic rocks, high-grade rocks _____. - ANSWERSare produced at greater temperatures and pressures Metamorphism may be induced by _____. - ANSWERScontact with a hot pluton contact with hot groundwater heat and pressure associated with deep burial ! All of the above are correct. Two common metamorphic rocks that typically lack foliation are _____. - ANSWERSquartzite and marble Which of the following can cause metamorphism? - ANSWERSincreases in temperature i...

Metamorphism - ANSWERSchanges in heat, pressure, and the chemical environment of rocks geothermal gradient - ANSWERStemperature increases with depth (pressure) Geobaric gradient - ANSWERSpressure increases with depth -"normal" geobaric gradient~300-400 bar/km confining - ANSWERSuniform directed pressure - ANSWERStension, compression, shear Metasomatism - ANSWERSmineral reactions due to fluids Shock metamorphism - ANSWERSmeteorite Sea floor metamorphism - ANSWERSoccurs...

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...

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...