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- Flow_banding abstract "Flow banding is a geological term to describe bands or layers that can sometimes be seen in rock that formed from the substance molten rock or magma.Flow banding is caused by friction of the viscous magma which is in contact with a solid rock interface, usually the wall rock to an intrusive chamber or if the magma is erupted, the surface of the earth across which a lava is flowing.The friction and viscosity of the magma causes phenocrysts and xenoliths within the magma or lava to slow down near the interface and become trapped in a viscous layer. This forms laminar flow, which manifests as a banded, streaky appearance.Flow banding is the result of a process of fractional crystallization which occurs by convection, if the crystals which are caught in the flow-banded margins are removed from the melt. This can change the composition of the melt in large intrusions, leading to differentiation. In layered intrusions flow banding can occur with crystal accumulation, forming pseudo-sedimentary structures. Flow banding can also occur due to disturbances in the field of flow thus forming a haemotomtic flow band, these are common in the region of upper Iceland, there are many good Icelandic videos in which this rare phenomenon can be observed.".
- Flow_banding thumbnail Flow_banded_rhyolite.JPG?width=300.
- Flow_banding wikiPageID "3060810".
- Flow_banding wikiPageRevisionID "546450371".
- Flow_banding hasPhotoCollection Flow_banding.
- Flow_banding subject Category:Igneous_petrology.
- Flow_banding subject Category:Igneous_rocks.
- Flow_banding subject Category:Structural_geology.
- Flow_banding subject Category:Volcanology.
- Flow_banding type Abstraction100002137.
- Flow_banding type IgneousRock114931879.
- Flow_banding type IgneousRocks.
- Flow_banding type Material114580897.
- Flow_banding type Matter100020827.
- Flow_banding type Part113809207.
- Flow_banding type PhysicalEntity100001930.
- Flow_banding type Relation100031921.
- Flow_banding type Rock114696793.
- Flow_banding type Substance100019613.
- Flow_banding comment "Flow banding is a geological term to describe bands or layers that can sometimes be seen in rock that formed from the substance molten rock or magma.Flow banding is caused by friction of the viscous magma which is in contact with a solid rock interface, usually the wall rock to an intrusive chamber or if the magma is erupted, the surface of the earth across which a lava is flowing.The friction and viscosity of the magma causes phenocrysts and xenoliths within the magma or lava to slow down near the interface and become trapped in a viscous layer. ".
- Flow_banding label "Flow banding".
- Flow_banding sameAs m.08nw07.
- Flow_banding sameAs Q5462090.
- Flow_banding sameAs Q5462090.
- Flow_banding sameAs Flow_banding.
- Flow_banding wasDerivedFrom Flow_banding?oldid=546450371.
- Flow_banding depiction Flow_banded_rhyolite.JPG.
- Flow_banding isPrimaryTopicOf Flow_banding.