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Tectonics
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A branch of geology dealing with the broad architecture of the outer part of the Earth; i.e., the regional assembling of structural or deformational features, a study of their mutual relations, origin, and historical evolution. It is closely related to structural geology, with which the distinctions are blurred, but tectonics generally deals with larger features. Adj: tectonic. Syn: geotectonics
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Tabular Crysta
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A crystal flattened parallel to any face.
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Tabular Deposit
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A flat tablelike or stratified bed; e.g., a coal seam.
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Taaffeite
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A hexagonal mineral, BeMg3 Al8 O16 ; hoegbomite group; a dimorph of musgravite; violet-red.
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Tumbling Mill
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Any horizontally mounted cylindrical mill in which contents are tumbled when rotating. Name often used in connection with cleaning of objects.
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Tourmalinization
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Introduction of, or replacement by, tourmaline.
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Tectosilicate
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Mineral with crystal structure containing silicon-oxygen tetrahedra arranged in three-dimensional frameworks.
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Tectonic
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Said of or pertaining to the forces involved in, or the resulting structures or features of, tectonics. Syn: geotectonic
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Tectonic Creep
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The almost constant movement of certain fault blocks that allows strain energy to be released without major earthquakes.
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Tabular Structure
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The structure of a mineral or rock that makes it tend to separate into plates or laminae.
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