A Sill is formed when a fluid rock (usually magma but it can be mud or salt) is squeezed in between the layers (usually horizontal) of older rocks before it solidifies in place.
A Dike or Dyke is the opposite, here the fluid rock penetrates across the layering of the older rocks.
Logically to get the material to form a Sill there must be an accompanying feeder Dyke.
A sill is an intrusive body of magma that pushes its way between layers of sediments
A volcanic sill is an intrusive body of magma. A volcani sill forms when magma sqeezes between layers of rock.
A sill is an intrusive body of magma that pushes its way between layers of sediments.
No. A sill is an intrusive feature, formed from magma in between underground rock layers.
A magma sill is a planar sheet of magma which is parallel to the surrounding rock.
No, a dike is not a type of Lava flow.
blocky lava flow
These extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain
Kilauea produces a'a and pahoehoe lava flows.
Aa lava is the type of lava that forms a thick, brittle crust.
No, a dike is not a type of Lava flow.
blocky lava flow
The type of lava flow that Mt. Kilauea has is a pahoehoe flow. This flow involves lava flowing into sheets after eruption. Once its top has cooled, the bottom layer moves under it resembling "a rope."
These extrusive rocks are formed from magma at or above the surface of the planet, and generally display smaller mineral crystals, or no crystals at all, because of the rapid cooling environment in which they form. Chemically, an intrusive and extrusive rock could be identical, the only difference being the size of the mineral crystals they contain
Kilauea produces a'a and pahoehoe lava flows.
Aa lava is the type of lava that forms a thick, brittle crust.
Pahoehoe is faster moving lava and AA is slower moving lava. Both types are found in basaltic type eruptions. They have different appearances. Pahoehoe is smooth and ropey where as AA is chunky and rough.(much like top of trees) Often a pahoehoe flow can change to an AA flow depending upon the type of slope it encounters. The steeper the slope the more likely AA lava will be present. Aa has more viscosity than Pahoehoe.
Pahoehoe lava.
it has pyroclastic flow and has small eruptions of ash.
A'a Lava.
Aa
The type of lava that flows from poas is color purple and it has hot pink streaks from the inner core. The lava is hot...