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Much of the northeast of Ireland is a basalt plateau. An area of particular note is the Giant's Causeway on the north coast, a mainly basalt formation caused by volcanic activity between 50 and 60 million years ago. [21] The basalts were originally part of the great Thulean Plateau formed during the Paleogene period. [22]
The Giant's Causeway (Irish: Clochán an Aifir) [1] is an area of approximately 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption. [ 3 ] [ 4 ] It is located in County Antrim on the north coast of Northern Ireland , about three miles (4.8 km) northeast of the town of Bushmills .
[7] [15] [16] The plateau is a pseudo-karst surface etched by heavy rainfall. [13] The highest point is 2,810 m (9,219 ft) above sea level, located at the southern end of the plateau and the highest point in the state of Bolívar , [ 7 ] [ 9 ] [ 16 ] 8.25 km (5.13 mi) north of the summit is another high point with an elevation of 2,772 m (9,100 ...
A flood basalt (or plateau basalt [1]) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the Earth via a mantle plume . [ 2 ]
A map showing the supposed extent of the Atlantean Empire. From Ignatius L. Donnelly's Atlantis: the Antediluvian World, 1882. [1]There are several hypotheses about real-world events that could have inspired Plato's fictional story of Atlantis, told in the Timaeus and Critias.
Giant lycopod and horsetail forests continued to evolve in tropical Laurasia together with a diversified assemblage of true insects. In Gondwana, in contrast, ice and, in Australia, volcanism decimated the Devonian flora to a low-diversity seed fern flora – the pteridophytes were increasingly replaced by the gymnosperms which were to dominate ...
Chilcotin Plateau Basalts [e] Tortonian: 11.62 * Serravallian: 13.82 * Langhian: 15.97 M. Miocene disruption (14.8–14.5) [f] Columbia River Basalt Group [g] Chilcotin Plateau Basalts [e] Increased Antarctic deep waters Yellowstone hotspot Nördlinger Ries (14.5-14.3) Burdigalian: 20.44 Aquitanian: 23.03 * Shield volcanoes of Ethiopia [h ...
Lemuria (/ l ɪ ˈ m jʊər i ə /), or Limuria, was a continent proposed in 1864 by zoologist Philip Sclater, theorized to have sunk beneath the Indian Ocean, later appropriated by occultists in supposed accounts of human origins.