Dome (geology)

The Richat Structure in the Sahara Desert, Africa, is a true dome.

In structural geology, a dome is a deformational feature consisting of symmetrically-dipping anticlines; their general outline on a geologic map is circular or oval. The strata in a dome are upwarped in the center; if the top of a dome is eroded off, the result will be a series of concentric strata that grow progressively older from the outside-in, with the oldest rocks exposed at the center. Many geologic domes are too large to be appreciated from the surface, and are apparent only in maps. Well-known regional structural domes include the Llano Uplift and the Ozark Dome.^[1]

Domes formed by intrusives

Localized domes may be formed when magma forms a shallow intrusion warping the overlying strata. An example would be the laccolith domes of the Henry Mountains of southeastern Utah. Salt domes are formed above a diapiric intrusion of low density evaporite rocks.

See also

• Anticline
• Basin
• Granite dome
• Petroleum reservoir
• Resurgent dome
• Salt dome

References

1. ^ Monroe, James S., and Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Belmont: Wadsworth Publishing Company, 1997. ISBN 0-314-09577-2

This tectonics article is a stub. You can help Wikipedia by expanding it.v · Categories: Structural geology Geologic domes Tectonics stubs Wikimedia Foundation. 2010. Игры ⚽ Нужна курсовая? Carol Eden Siempre 23 Look at other dictionaries: Dome (disambiguation) — Dome in architecture : ribbed hemispherical dome resting on an octagonal drum in the Great Mosque of Kairouan (also called the Mosque of Uqba), city of Kairouan, Tunisia. A dome is a structural element of architecture that resembles the… …   Wikipedia Dome salin — Dôme salin Coupe géologique simplifiée de la partie nord de l Allemagne montrant les dômes de sel (en bleu) …   Wikipédia en Français Dôme Salin — Coupe géologique simplifiée de la partie nord de l Allemagne montrant les dômes de sel (en bleu) …   Wikipédia en Français Dome, Arizona —   Ghost town   …   Wikipedia dome´like´ — dome «dohm», noun, verb, domed, dom|ing. –n. 1. a large, rounded roof or ceiling on a circular or many sided base; cupola: »Nearly every state capitol has a dome. 2. anything shaped like a dome; something high and rounded: »the dome of the sky,… …   Useful english dictionary Dôme du Goûter — Mont Blanc (centre left) and the Dôme du Goûter (right) Elevation …   Wikipedia Dome Mountain — Elevation 2,031 m (6,663 ft) Prominence 136 m (446 ft) …   Wikipedia Dome Mountain (Wyoming) — Dome Mountain Elevation 9,826 ft (2,995 m) Location Location …   Wikipedia Geology of the Lassen volcanic area — The geology of the Lassen volcanic area presents a record of sedimentation and volcanic activity in the area in and around Lassen Volcanic National Park in Northern California, U.S.. The park is located in the southernmost part of the Cascade… …   Wikipedia Geology of the Yosemite area — The exposed geology of the Yosemite area includes primarily granitic rocks with some older metamorphic rock. The first rocks were laid down in Precambrian times, when the area around Yosemite National Park was on the edge of a very young North… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”