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Definition of dome

i. Roof of a furnace that is roughly hemispherical in shape.

ii. The steam chamber of a boiler.

Compare with: air dome

iii. An uplift or anticlinal structure, either circular or elliptical in outline, in which the rocks dip gently away in all directions. A dome may be small, such as a Gulf Coast salt dome, or many kilometers in diameter. Domes include diapirs, volcanic domes, and cratonic uplifts. Type structure: Nashville Dome, TN. Less-preferred syn: swell.

Synonym of: dome structure, structural dome, quaquaversal fold

See Also: Pericline, arch, salt dome

Compare with: basin

iv. A general term for any smoothly rounded landform or rock mass, such as a rock-capped mountain summit, that roughly resembles the dome of a building; e.g., the rounded granite peaks of Yosemite, CA. The term is also applied to broadly up-arched regions, such as the English Lake District or the Black Hills of South Dakota.

Ref: AGI

v. A large magmatic or migmatitic intrusion whose surface is convex upward and whose sides slope away at low but gradually increasing angles. Intrusive igneous domes include laccoliths and batholiths; the term is used when the evidence as to the character of the lower parts of the intrusion is insufficient to allow more specific identification.

Ref: AGI

vi. An open crystal form of four parallel faces that intersect the c axis and one other; incorrectly called a horizontal prism. Adj. domatic.

vii. A symmetrical structural uplift having an approx. circular outline in plan view, and in which the uplifted beds dip outward more or less equally in all directions from the center, which is both the highest point of the structure and locally of the uplifted beds.

viii. A mountain having a smoothly rounded summit of rock that resembles the cupola or dome on a building.

Ref: AGI

ix. An open crystal form consisting of two parallel faces that truncate the intersections of two sets of pinacoids and are astride a symmetry plane.


 
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