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5. Rocks typically formed at or near the surface of the earth.
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6. The shape of sediment grains which indicates that it did not travel
very far from the source.
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8. Type of rock which originates from the earth's interior, reaching the
surface.
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11. The volcanic equivalent of granite (i.e., has the same general mixture
of minerals).
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12. Collective name for very fine-grained sediment, typically forming shales.
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13. Fossils such as those found in sedimentary rocks, are evidence of ancient
- - - -.
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16. The plutonic equivalent of basalt (same mineral composition, but with
a texture due to slow cooling).
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18. Name of rock formed usually by the remains of ancient sea creatures.
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20. The main constituent of a good piece of sandstone.
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22. Naturally occurring, solid, inorganic substance having an internal
atomic arrangement.
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23. Slow cooling of deeply buried molten rock produces crystals of this
size.
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26. The term used to describe the degree of uniformity of grain size in
a sedimentary rock.
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27. Minerals rearranged into this pattern, due to extreme pressure from
regional metamorphism.
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28. Rock type made by heat and/or pressure great enough to alter a parent
rock of any type.
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1. The most common igneous rock on earth; the volcanic equivalent of gabbro.
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2. Arkose sandstone is an example of a rock whose sediment formed - - -
- the source.
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3. Terminology which described minerals in igneous rocks which are high
in iron and magnesium.
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4. Well-sorted sediment produced by much transport typically has this shape.
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7. Rapid cooling of molten rock at the earth's surface typically produces
these size crystals.
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9. The chief culprit for the decay of carbonate rocks used in urban public
buildings (2 words).
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10. Metamorphic rock composed of a calcium carbonate mineral (usually does
not weather well.)
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14. Type of rock which originates in the molten state, deep within the
earth.
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15. Metamorphic rock derived from shale, has a smooth texture that makes
a good writing surface.
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16. Felsic, plutonic igneous rock, whose interlocking crystals make it
a great building stone.
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17. Terminology describing igneous rocks which originate deep within the
earth.
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19. Type of weak acid responsible for chemical weathering of rocks such
as marble.
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21. Very fine crystals (or the lack of crystals) is caused by this rate
of cooling of molten rock.
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24. Earth's most common sedimentary rock; its abundance is explained by
the large source of clay minerals.
-
25. Molten rock which contains dissolved gases (trapped which still below
ground).
26. The rate of cooling of magma determines only this property of the
crystals in an igneous rock.
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