Hotspot (geology) - Wikipedia
In geology, hotspots (or hot spots) are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. [1] Examples include the Hawaii, Iceland, and Yellowstone hotspots.
Hotspots - Geology (U.S. National Park Service)
2020年2月11日 · A hotspot is a large plume of hot mantle material rising from deep within the Earth. A line of volcanoes develops as a plate moves over a hotspot, much as a line of melted wax forms as a sheet of waxed paper is moved slowly over a burning candle.
Hotspot | Volcanic Activity, Plate Tectonics & Magma | Britannica
hotspot, region of Earth’s upper mantle that upwells to melt through the crust to form a volcanic feature. Most volcanoes that cannot be ascribed either to a subduction zone or to seafloor spreading at mid-ocean ridges are attributed to hotspots.
2.7: Hotspots - Geosciences LibreTexts
Hotspots are the only types of volcanism not associated with subduction or rifting zones at plate boundaries; they seem totally disconnected from any plate tectonics processes, such as earthquakes. However, there are relationships between hotspots and plate tectonics.
Hot Spots - Education
2023年10月19日 · A hot spot is an area on Earth over a mantle plume or an area under the rocky outer layer of Earth, called the crust, where magma is hotter than surrounding magma. The magma plume causes melting and thinning of the rocky crust and widespread volcanic activity. 2018 eruption on Mount Kilauea.
Hotspot (geology) - New World Encyclopedia
In geology, a hotspot is an area in the Earth's mantle where a column of hot magma rises up to melt through the crust, resulting in volcanic activity. The term hotspot is also used when referring to the location on the Earth's surface where such volcanism has been taking place.
Hot Spot Volcanism - Education
2024年4月30日 · Hot spot volcanism is unique because it does not occur at the boundaries of Earth’s tectonic plates, where all other volcanism occurs. Instead it occurs at abnormally hot centers known as mantle plumes.
Plate Tectonics and the Hawaiian Hot Spot - Geology.com
In recent years, scientists have been debating about the actual depth(s) of the Hawaiian and other Earth hot spots. Do they extend only a few hundred miles beneath the lithosphere? Or do they extend down thousands of miles, perhaps to Earth's core-mantle boundary?
What is a hotspot and how do you know it's there?
Scientists don’t fully understand how and why hotspots occur, and there is vigorous scientific debate about their origins. A frequently-used hypothesis suggests that hotspots form over exceptionally hot regions in the mantle, which is the hot, …
5.16: Hot Spots - Geosciences LibreTexts
In geology, the places known as hotspots or hot spots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. They may be on, near to, or far from tectonic plate boundaries.
- 某些结果已被删除