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Rock Cycle

Across
an igneous rock composed of crystals large enough to be seen with the naked eye.
a texture of an igneous rock in which the crystals are too small to be seen with the naked eye.
molten rock which reaches the surface of the earth, commonly seen as a volcano.
rocks which form at the earth's surface, made up of either particles of pre-existing rock or chemical precipitates (minerals solidified from a dissolved state).
a descriptive term for igneous rocks that formed through the crystallization of magma deep within the earth. Because the cooling rate of deeply buried magma is slow, large crystals are found in intrusive rocks.
the evidence of remains of prehistoric life.
the formation of crystals, resulting from the cooling and solidification of molten rock or from chemical precipitation
molten rock found below the earth's surface, often containing dissolved gases which later escape if the magma reaches the surface (which then becomes lava).
rocks that have been changed due to heat and/or pressure.
solid particles of minerals or organic material, found at the earth's surface. When cemented, sediments become sedimentary rock.
a type of rock made of other that were melted
Down
the size, shape, and orientation of crystals in a rock; when analyzed properly, they help to determine the rock's origin.
sediments composed of chemical precipitates, biochemical sediments, and organic sediment.
a sediment composed of fragments of pre-existing rock, weathered at the earth's surface.
the formation of a rock due to cementation and/or compaction usually applied to sedimentary rocks.
an igneous rock originating from lava erupted at the earth's surface
a textural term for igneous rocks that underwent a 2-stage cooling history; initially, coarse crystals (called "phenocrysts") cooled below the ground, but were dragged to the surface by a volcanic eruption which later produced a larger proportion of fine-grained aggregate of crystals (called the "groundmass").
a textural term for a volcanic rock which contains many holes or cavities as a result of escaped gases.
the layered texture found in metamorphic rocks, caused by great pressure; elongated or platy minerals such as amphiboles and micas respond to this pressure by aligning into layers or bands.
physical and chemical processes which operate at the earth's surface, which ceaselessly break down rocks into fragments, which when deposited, are called sediment.
rocks composed primarily of minerals containing magnesium and iron usually applied to igneous rocks. Because mafic minerals tend to be dark, mafic rocks are mostly dark in color.
A hard solid object