Basic lava, also called mafic lava, is a type of lava that consists of 50 percent silica. This type of lava is highly fluid and commonly creates large lava flows. Basic lava can reach speeds of up to 20 miles per hour and reach distances of 60 miles.
a basic lava cone is a group of sedimentary rock formed in the lava been pushed and pushed till it has formed a cone and they call that a basic lava cone. Read More. share:
a basic lava cone is a group of sedimentary rock formed in the lava been pushed and pushed till it has formed a cone and they call that a basic lava cone.
Shield volcanoes or basic lava cones eject basic lava. As basic lava is non-viscous, it can reach very far from the vent before it finally cools down and solidifies. Therefore, basic lava cones have short height, concave slopes and large base area. Acidic lava cones eject acidic lava. As acidic lava is viscous, it cannot reach very far from the ...
Some of the more viscous lava is squeezed out to form a spine or plug. Examples of dome volcano: Unzen Volcano (Japan), Mount Hood (Oregon), Soufriere Hills Volcano (Montserrat) Shield volcano/basaltic lava volcano/basic lava cone - A shield volcano is a wide volcano with shal-lowly-sloping sides.
The most active shield volcano in Africa is Nyamuragira. Eruptions at the shield volcano are generally centered within the large summit caldera or on the numerous fissures and cinder cones on the volcano's flanks. Lava flows from the most recent century extend down the flanks more than 30 km (19 mi) from the summit, reaching as far as Lake Kivu.
A spatter cone is a low, steep-sided hill or mound that consists of welded lava fragments, called spatter, which has formed around a lava fountain issuing from a central vent. Typically, spatter cones are about 3–5 meters (9.8–16.4 ft) high.
Examples of cinder cone volcanoes: Paricutín in Mexico, Lava Butte, Sunset Crater One of the most common types of volcanoes is the cinder cone. Less dangerous compared to other types, cinder cones only grow to about 1,000-1,200 feet tall.
The lava that erupts from these volcanoes is a thin liquid that slowly emerges from the center of the volcano as well as from cracks in its sides. The lava spreads in a thin layer before cooling. Hawaii’s Mauna Loa is a famous example of a shield cone volcano. A third type of volcanic cone is a composite cone.
Basic Lava Volcanoes. Basic lavas are characteristically very fluid, so spread easily and give rise typically to volcanoes of low gradient. ... Thus in Victoria there are far more scoria cones than other types of volcano, though the province as a whole is dominated by flows of basic lava. The cross-section of a scoria cone.