metamorphic - ANSWERS"of changed form"
metamorphic rocks - ANSWERSrocks changed from one form to another by intense heat, intense pressure, or the action of hyrdothermal fluids
protolith - ANSWERSparent rock: the rock type that was metamorphosed ie: igneous, sedimentary, metamorphic
metamo...
metamorphic rocks - ANSWERSrocks changed from one form to another by intense heat, intense
pressure, or the action of hyrdothermal fluids
protolith - ANSWERSparent rock: the rock type that was metamorphosed ie: igneous, sedimentary,
metamorphic
metamorphic grade - ANSWERSthe intensity of metamorphism from low grade (least intense) to high
grade (most intense)
serentinite - ANSWERSmetamorphosed from mafic and ultramafic igneous rocks
metaconglomerate - ANSWERSmetamorphosed from sedimentary conglomerate
quartize - ANSWERSmetamorphosed from sandstone
marble - ANSWERSmetamorphosed from limestone
shale - ANSWERSmetamorphosed to slate, phyllite, schist, and gneiss
hydrothermal fluids - ANSWERSwatery hot fludis
Hornfels - ANSWERSformed only in a narrow zone of "contact" metamorphism next to the intrusion of
magma
, agents of metamorphism - ANSWERStemperature, pressure, and hydrothermal fluids
confining pressure - ANSWERSpressure (stress) applied equally in all directions, increases with depth
below Earth's surface and is equal in all directions
directed pressure (differential stress) - ANSWERSpressure that is not equal in all direction, more
compressed in one direction than in the others
neomorphism - ANSWERSa process whereby mineral crystals not only recrystallize but also form
different minerals from the same chemical elements, happens when bonds of the original mineral break,
and chemical elements rearrange themselves into different crystalline structures/different molecules
metasomatism - ANSWERSthe loss or addition of new chemicals during metamorphism, water is an
important agent in this process
burial metamorphism - ANSWERSmost common type of metamorphism and occurs on a regional scale as
rocks form and get buried, caused by confining pressure
regional metamorphism - ANSWERSoccurs on a regional scale, but specifically to large scale
metamorphism at convergent plate boundaries where there is directed pressure and high temperature
that causes folding and foliation of the rocks, also called dynamothermal (pressure-temperature)
metamorphism
contact metamorphism - ANSWERSoccurs locally, adjacent to igneous intrusions, involves conditions of
low to moderate pressure and intense heating
hydrothermal metamorphism - ANSWERSoccurs along fractures that are in contact with the
hydrothermal fluids, high heat and low pressure
foliated - ANSWERSflatten out parallel to one another and perpendicular to the stress
(if the rock is under directed pressure, then it may fold in a ductile (like plastic) manner and become
foliated)
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