|
|
The melted rock ejected by a volcano from its top or fissured sides. It flows out in streams sometimes miles in length. It also issues from fissures in the earth's surface, and forms beds covering many square miles, as in the Northwestern United States.
Molten earth material (rock) that comes out of volcanoes or cracks in the Earth's crust.
It is a common term which is applied to igneous rockss, like basalt and rhyolite, that erupted from the earth by volcanic action.
The name given to molten rock ( magma) when it comes to the surface. volcano
A magma that is on the surface (i.e. volcanic).
Molten rock at the earth's surface
liquid rock; on the Moon, now frozen (hardened).
Melted or molten rock that is above the surface of the earth. Such rock is called magma if it is below the surface of the Earth.
magma emerging on the Earth’s solid surface, exposed to air or water
Molten rock material on Earth's surface.
Lava is magma that has erupted onto the Earth's surface and or molten rock on the surface; also used to refer to magma after it has solidified.
Magma that comes to the Earth's surface through a volcano or fissure.
molten rock that reaches the surface through a volcano or fissure and then cools and hardens
Molton rock that flows throughs volcanoes and other gaps in the crust on to the Earth's surface.
(la'-va) An extrusive volcanic rock with sufficiently low viscosity that it can flow under the influence of gravity.
An igneous rock type. It is actually molten rock - magma - that either explodes or seeps from a volcano or other break in the crust of the Earth.
Molten magma released from a volcanic vent or fissure.
Rock matter that flows in a molten state from volcanoes.
igneous rock flow at surface in both molten and cooled form
Molten rock that is capable of flowing on the surface or in lava tubes. See 'pahoehoe' and 'aa' for specific types.
A general name for the molten rock ejected by volcanoes.
Magma which has been erupted onto the surface of the earth, or rock formed by the solidification of that magma. Back
magma after hitting the surface lithosphere: the layer in between the magma and the crust which contains the plates.
Lava is the word for magma (molten rock) when it erupts onto the Earth's surface. Geologists also use the word to describe the solidified deposits of lava flows and fragments hurled into the air by explosive eruptions (for example, lava bombs or blocks). Lava is from the Italian word for stream, which is derived from the verb lavare--to wash.
A volcanic rock protruded by the eruption of molten material.
hot liquid rock that flows out of a volcanic vent.
It is the name given to molten rock on earth's surface that is released from a volcano.
Molten, fluid rock that is extruded onto the surface of the Earth through a volcano or fissure. Also the solid rock formed when the lava has cooled.
A general term applied to igneous rocks such as basalt and rhyolite, that erupted from the earth by volcanic action.
Rock from a volcano, generally molten when ejected.
Molten rock (magma) that has been erupted from a volcano onto the Earth's surface.
magma that has streamed out from the crust into the earth's surface.
when molten rock reaches the earth's surface, it is called lava
rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
Magma or molten rock which reaches the Earth's surface exposed to air or water. Lava occurs as flows, domes, fragments within cones of volcanoes and as pillows formed on the ocean floor.
_Molten rock reaching the earth's surface where it rapidly cools. Fine grained.
Molten rock that is erupted onto the surface of a planet and is hot enough to flow.
A general term for rock that has solidified from molten material extruded on the surface of the earth.
the molten silicates or the congealed rock that issues onto the surface of the earth.
Once the magma reaches the Earth's surface and is extruded, it is known as "lava".
Molten rock that erupts to Earth's surface through a volcano or a fissure.
Partially molten rock that has risen through Earth's crust and been erupted onto the surface.
Melted magma from beneath the earth's crust which is forced up through cracks and pours forth from volcanoes
Magma which has reached the surface through a volcanic eruption. The term is most commonly applied to streams of liquid rock that flow from a crater or fissure. It also refers to cooled and solidified rock.
A bonsai soil amendment formed from crushed volcanic ash.
Magma that reaches the Earth's surface through a volcanic eruption. When cooled and solidified, forms extrusive (volcanic) igneous rock.
molten rock that erupts from a fissure or a vent (see magma).
Molten rock that erupts from a vent or fissure; see magma.
Molten rock (magma) that extrudes through a volcano
fluid (molten) rock that issues from a volcano or fissure.
Molten rock that erupts onto Earth's surface.
Magma that has come in contact with the air, (only the mane changes to lava, not the make-up) and flows on the earth’s surface.
molten magma extruded from volcanic vent
Molten rock that flows over the surface of a volcano as a very dense fluid and solidifies to form a hard, dense rock.
Magma or molten rock that has reached the Earth's surface.
Molten rock after it has erupted from a volcano onto the Earth's surface.
The rock mass formed by consolidation of molten rock issuing from volcanic vents and fissures.
The term used for magma once it has erupted onto the Earth's surface.
Molten rock erupted onto the surface of the Earth. Lavas vary according to the chemistry of the molten rock. In general the more silica they contain, the more viscous they are. Basalt, a silica-poor ( basic) lava tends to flow easily and therefore form thin, extensive lava flows, while rhyolite lava ( acid) is so viscous it rarely flows and forms ' domes' above the site of the eruption.
Molten rock that has flowed out onto the Earth's surface.
Magma that flows from the earth's surface.
Lava is molten rock. It usually comes out of erupting volcanoes.
molten rock above a planet's surface.
Molten rock erupted from a volcano. Lava can occur in flows, domes, fragments and as pillows formed underwater.
the term for magma which has reached the Earth's surface and lost its dissolved gas content.
magma Melted, glowing rock, which flows the surface on the occasion of eruptions.
Molten rock that forms above the surface of the Earth as a result of volcanic activity.
Any molten material that is extrusive or volcanic, or the rock that forms from a molten extrusive.
molten rock that reaches the earth's surface through a volcano or fissure, often referred to in the form of lava flows - BACK
|
