Flood basalt - Wikipedia
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]
Columbia River Basalt Group Stretches from Oregon to Idaho
Dec 7, 2023 · The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over 210,000 km2 of mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada.
Flood Basalts | Volcano World | Oregon State University
Flood Basalts. Flood basalts are yet another strange type of "volcano." Some parts of the world are covered by thousands of square kilometers of thick basalt lava flows - individual flows may be more than 50 meters thick, and individual flows extend for hundreds of kilometers.
Flood Basalt - an overview | ScienceDirect Topics
Flood basalt is formed by an eruption or series of eruptions of large volcanic episodes that cover vast stretches of land or ocean floor with flows of mafic igneous rocks (basalt lava flows). A flood-basalt province is popularly known as Trap (Deccan Traps in India).
Rapid eruption of the Columbia River flood basalt and ... - AAAS
The Columbia River Basalt Group (CRBG) is the youngest, smallest, and best-preserved continental flood basalt. It erupted ~210,000 km 3 of lava in the Pacific Northwest, United States, between ~17 and 5 million years (Ma) ago.
Origin of Columbia River flood basalt controlled by ... - Nature
Feb 15, 2012 · The origin of the Steens–Columbia River (SCR) flood basalts, which is presumed to be the onset of Yellowstone volcanism, has remained controversial, with the proposed conceptual models...
Flood basalts | AMNH - American Museum of Natural History
Among the major outpourings of lava are the huge plains known as flood basalt provinces. The Siberian basalts, the Deccan traps of India, and the Karoo basalts of southern Africa are among the largest of these on land; similar vast plains exist in the ocean basins as well.
Flood basalt buildup warms climate | Nature Geoscience
May 9, 2022 · Flood basalts are connected to Earth’s most extreme environmental crises, yet warming is sometimes observed before surface eruptions. Modelling reveals that a complex buildup of basalt ...
Flood Basalts and Hot-Spot Tracks: Plume Heads and Tails | Science …
Continental flood basalt eruptions have resulted in sudden and massive accumulations of basaltic lavas in excess of any contemporary volcanic processes. The largest flood basalt events mark the earliest volcanic activity of many major hot spots, which are thought to …
Plateau Basalts (AKA Flood Basalts) | SpringerLink
Jun 17, 2022 · Geikie (1885) used indistinctly “plateau” and “flood” basalts to describe volcanic structures observed on the Snake River Plain-Washington state (USA), north-east Ireland-inner Hebrides-Faroe islands-Iceland (north Atlantic), Ethiopia (Africa), and the Deccan traps (India).