Rock (geology)
Rocks (disambiguation)|and|Stone (disambiguation)|and|Stones (disambiguation)}}In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.
Rocks are usually grouped into three main groups: igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks are formed when magma cools in the Earth's crust, or lava cools on the ground surface or the seabed. Sedimentary rocks are formed by diagenesis and lithification of sediments, which in turn are formed by the weathering, transport, and deposition of existing rocks. Metamorphic rocks are formed when existing rocks are subjected to such high pressures and temperatures that they are transformed without significant melting.
Humanity has made use of rocks since the earliest humans. This early period, called the Stone Age, saw the development of many stone tools. Stone was then used as a major component in the construction of buildings and early infrastructure. Mining developed to extract rocks from the Earth and obtain the minerals within them, including metals. Modern technology has allowed the development of new human-made rocks and rock-like substances, such as concrete. Provided by Wikipedia
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1
Sculpture in Britain : the middle ages. by Stone, Lawrence
Published 1955Call Number: Loading…
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Music notation in the Twentieth Century : a practical guidebook / by Stone, Kurt
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Research for advancement of peace / by Stone, Julius
Published 1968Call Number: Loading…
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Power politics and human hopes / by Stone, Julius
Published 1968Call Number: Loading…
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La dinastía de los conquistadores / by Stone, Samuel
Published 1975Call Number: Loading…
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Modelos computadores de la economia / by Stone, Richard
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Computadoras, ciencias del comportamiento y el juez humano / by Stone, Julius
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Negociación : una orientación para enfrentar las conversaciones difíciles / by Stone, Douglas
Published 1999Call Number: Loading…
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Comportamiento no convencional / by Stone, Mark
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Manual de mercadeo directo / by Stone, Bob
Published 1989Call Number: Loading…
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La crisis de la aristocracia, 1558-1641 / by Stone, Lawrence
Published 1976Call Number: Loading…
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12
Cambridge proficiency English / by Stone, Linton
Published 1967Call Number: Loading…
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13
El valor del tigre. / by Stone, Jeff
Published 2005Call Number: Loading…
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14
The cave and the mountain : a study of E. M. Forster / by Stone, Wilfred
Published 1966Call Number: Loading…
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15
Diseases of the joints and rheumatism / by Stone, Kenneth
Published 1947Call Number: Loading…
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16
Maquinaria agrícola / by Stone, Archie A.
Published 1966Call Number: Loading…
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17
Housing town development land and costs. by Stone, P. A.
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18
Niñez y adolescencia : psicología de la persona que crece / by Stone, L. Joseph
Published 1967Call Number: Loading…
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Niñez y adolescencia / by Stone, L. Joseph
Published 1970Call Number: Loading…
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Law and its administration / by Stone, Harlan F.
Published 1924Call Number: Loading…
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