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exam one review - part 2
Terms in this set (27)
How does cooling rate effect texture?
•The rate of cooling strongly influences crystal size
•Rapid cooling produces small crystals
•Very slow cooling produces much larger crystals
What are the various igneous textures?
•Coarse grain texture
•Fine grained texture
•Pyroclastic (fragment) texture
Pyroclastic (fragment) texture
an igneous rock texture resulting from the consolidation of individual rock fragments that are ejected during a violent volcanic eruption.
a texture of igneous rocks in which the crystals are too small for individual minerals to be distinguished with the unaided eye
an igneous rock texture in which the crystals are roughly equal in size and large enough that individual minerals van be identified with the unaided eye
an igneous texture consisting of large crystals embedded in a matrix of much smaller crystals
a term applied to igneous rocks that contain small cavities called vesicles, which formed when gases escaped from lava
a term used to describe the texture of certain igneous rocks, such as obsidian, that contain no crystals
intrusive rocks are also called
are igneous rock that formed below Earth surface
which rock can remain at depth unless portions of the crust are uplifted and overlying rocks are stripped away by erosion
Extrusive igneous rocks are also called
Extrusive igneous rocks
Igneous rock formed when magma solidifies at Earth surface
The common characteristics used to identify minerals
the resistance of a mineral to being scratched
the appearance or quality of light reflected from the surface of a mineral
The property possessed by an object of producing different sensations on the eye as a result of the way it reflects or emits light.
the color of a mineral's powder
the tendency of a mineral to break along flat surfaces
is the rock from which it was formed
is a coarse, crystalline rock whose parent rock is limestone.
Composed of large interlocking calcite crystals formed from the recrystallization of smaller grains in the parent rock
Fine-grained, low-grade metamorphic rock, formed by the metamorphism of shale
Does slate rocks contains platy minerals and have excellent rock cleavage?
is a medium to coarse grained metamorphic rocks having a foliated texture, in which platy minerals dominate
a sedimentary rock composed chiefly of calcite
can be formed by inorganic means or biochemical process
is a sedimentary rock consisting primarily of organic matter, formed in stages from accumulations of large quantities of undecayed plant material.
used as a fossil fuel
originate in freshwater, coastal or swamps
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