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Glossary Title
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Sandstone
a sedimentary rock composed of consolidated, sand-sized grains

Sediment
unconsolidated particles of rocks and minerals

Sedimentary rocks
all rocks formed on the earth's surface by organic and inorganic means at low temperature and pressure

Seismologist
a geologist whose professional specialty is the study of the causes and effects of earthquakes

Seismology
the science of earthquake study

Shale
a sedimentary rock composed mostly of clay minerals, with thin, well-defined laminar bedding

Silicate
any chemical compound composed of the two elements, silicon and oxygen, which are thee most abundant elements on the earth's surface. The most common minerals are silicates or aluminosilicates.

Sinkhole
a depression on the earth's surface, produced by the collapse of a cavern roof

Sodium sulphate
a type of salt mineral mined in Saskatchewan; used in the production of paper and as a filler for detergents

Soil
a term used to describe almost any type of earth that is not solid rock; composed of rock pieces, air, water, and microorganisms

Specific gravity
the ratio of a unit volume of a substance to the same volume of water; numerically equal to density, which is mass per unit volume

Spring
water flow produced where the earth's surface intersects the water table, allowing groundwater to flow out

Stratigraphy
the science of study of stratified sedimentary rock and its fossils

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