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A dome is a feature in structural geology where a circular part of the Earth's surface has been pushed upward, tilting the pre-existing layers of earth away from the center. In technical terms, it consists of symmetrical anticlines that intersect each other at their respective apices .
The dome of the Great Mosque of Kairouan (also called the Mosque of Uqba), built in the first half of the 9th century, has ribbed domes at each end of its central nave. The dome in front of the mihrab rests on an octagonal drum with slightly concave sides. [47] [48] The Great Mosque of Sfax in Tunisia was founded in the 9th century and later ...
First dome with a polygonal ground plan [3] 1227 16.9 × 21.0 55.4 × 68.9 St. Gereon's Basilica: Cologne, Germany Elliptical dome. Largest dome to be constructed in the Occident in the years between the construction of Hagia Sophia's dome in 563 and the completion of Florence Cathedral in 1436. [60] 1405 18.2 60 Mausoleum of Khoja Ahmed Yasavi
In the case of the simple dome, the pendentives are part of the same sphere as the dome itself; however, such domes are rare. [8] In the case of the more common compound dome, the pendentives are part of the surface of a larger sphere below that of the dome itself and form a circular base for either the dome or a drum section. [7]
A tholos (pl.: tholoi; from Ancient Greek θόλος, meaning "conical roof" [1] or "dome"), in Latin tholus (pl.: tholi), is a form of building that was widely used in the classical world. It is a round structure with a circular wall and a roof, usually built upon a couple of steps (a podium), and often with a ring of columns supporting a ...
In architecture, a pendentive is a constructional device permitting the placing of a circular dome over a square room or of an elliptical dome over a rectangular room. [1] The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for a dome. [2]
A double dome, the inner dome is an open latticework through which the outer dome can be seen, which is painted to appear to be a clear sky. [ 172 ] Empress Maria Theresa commissioned the Gardekirche [ de ] as part of a relocated crown-sponsored hospital in Vienna and it was built between 1755 and 1763.
The structure itself is a circular dome, about 7.24 km (4.50 mi) in diameter, deeply eroded and buried in glacial debris. Its age is estimated to be less than 97 million years (Cretaceous or younger).