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A rift zone is a feature of some volcanoes, especially shield volcanoes, in which a set of linear cracks (or rifts) develops in a volcanic edifice, typically forming into two or three well-defined regions along the flanks of the vent. [1]
A map of East Africa showing some of the historically active volcanoes (as red triangles) and the Afar Triangle (shaded at the center), which is a so-called triple junction (or triple point) where three plates are pulling away from one another: the Arabian plate and two parts of the African plate—the Nubian and Somali—splitting along the East African Rift Zone Main rift faults, plates ...
Block view of a rift formed of three segments, showing the location of the accommodation zones between them at changes in fault location or polarity (dip direction) Gulf of Suez Rift showing main extensional faults. In geology, a rift is a linear zone where the lithosphere is being pulled apart [1] [2] and is an example of extensional tectonics ...
Rift phase lavas cover most of the island, not only forming the ridges along each rift zone but also partially infilling the landslide bays. The rift zones extend outwards as submarine volcanic ridges on the ocean floor; for example, the south-south-east rift zone extends underwater to at least 40 km (25 mi) south of the island. [223]
The Baikal Rift Zone in eastern Russia; The Red Sea Rift; The Aden Ridge along the southern shore of the Arabian Peninsula; The Carlsberg Ridge in the eastern Indian Ocean; The Woodlark Basin undergoing transition from continental rifting to sea floor spreading to the east of New Guinea; The Gorda Ridge off the northwest coast of North America
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, ... Examples include the volcanoes of the East African Rift. [21]
Jun. 3—1/6 Swipe or click to see more COURTESY USGS An aerial image of the Southwest Rift Zone eruption of Kīlauea, viewed during an overflight at approximately 6 a.m. today. 2/6 Swipe or click ...
The Devana Chasma rift system were also constructed by the uplift, and became active due to the Theia Mons volcano. Furthermore, these evidences proposed several aspects concerning the development and history of the rift zone. Nowadays, the rift zone is still active but the rifting is much slower because of the relative cold mantle plume.