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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 ]
Map all coordinates using OpenStreetMap. Download coordinates as: KML; GPX (all coordinates) ... List of flood basalt provinces; Franklin Large Igneous Province; H.
The basalt samples at Paraná and Etendeka have an age of about 132 Ma, during the Valanginian stage of the Early Cretaceous. [3] Indirectly, the rifting and extension are probably the origin of the Paraná and Etendeka traps and it could be the origin of the Gough and Tristan da Cunha Islands as well, as they are connected by the Walvis Ridge (Gough/Tristan hotspot).
Zanclean flood (5.333) Miocene: Messinian: 7.246 * 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 ...
Continental rifting commonly follows flood basalt volcanism. Flood basalt provinces may also occur as a consequence of the initial hot-spot activity in ocean basins as well as on continents. It is possible to track the hot spot back to the flood basalts of a large igneous province; the table below correlates large igneous provinces with the ...
The Coppermine River Group was formed when vast volumes of basaltic lava paved over a large area of the northwestern Canadian Shield about 1,267 million years ago. These basalts form flood basalts that reach thicknesses ranging from 2,000 m (6,562 ft) to 3,500 m (11,483 ft) and consists of about 150 lava flows, each about 10–25 m thick.
Map all coordinates using OpenStreetMap. Download coordinates as: KML; ... Pages in category "Flood basalts" The following 20 pages are in this category, out of 20 total.
Above the Botucatu Formation, a large igneous province was formed by the Serra Geral Formation, part of the Paraná and Etendeka traps, enormous flood basalts that occurred 137 to 127 million years ago, associated with the rifting of Gondwana and the opening of the South Atlantic Ocean. Until today, the surface area still reaches more than ...