It depends where the rock was formed. If it was formed inside the earth, it would be rough. If it was formed on the surface, it would be smoother than the rock formed inside the earth.
A flood basalt is not a volcano in and of itself. It is a large rock formation created by an extended period of intense volcanic activity.
Igneous rock.
Extrusive igneous rock is produced by the solidification of lava.
Yes. Volcanic rock laid down by different eruptions, or different phases up eruptive activity will be stratified.
Craters form normally during impacts from meteorites, but can also have been formed by early volcanic activity. Most early planetoids and moons had Volcanic activity, when a volcano explodes or collapses is leave a caldera, which is a crater looking formation.
Subduction zones lead to the formation of volcanic activity because the water combined with crust and mantle material lowers the rock's melting point temperature, causing the rock to melt and produce magma, which then creates volcanic activity.
Volcanic activity produces extrusive igneous rock.
During the Pennsylvanian time period, there was a lot of volcanic activity and these constituted a lot of rock formation. Volcanic ashes also settled on the earth's surface and buried some trees.
A flood basalt is not a volcano in and of itself. It is a large rock formation created by an extended period of intense volcanic activity.
Volcanic activity produces extrusive igneous rock.
Mesas and buttes are formed by differential erosion where a tough layer of rock protects weaker ones below it. If the top layer of rock is a volcanic rock such as basalt, then it was formed as an indirect result of volcanic activity. The whole rock formation may not by volcanic, as lava may flow over sediment.
igneous rocks
Igneous rock.
Volcanic breccia.
Extrusive igneous rock is produced by the solidification of lava.
Yes. Volcanic rock laid down by different eruptions, or different phases up eruptive activity will be stratified.
Craters form normally during impacts from meteorites, but can also have been formed by early volcanic activity. Most early planetoids and moons had Volcanic activity, when a volcano explodes or collapses is leave a caldera, which is a crater looking formation.