Is lava rock porous?
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Lava rock can be porous, with its porosity and permeability varying depending on factors such as composition, crystallinity, and diagenesis. In the case of rhyolitic dome lavas, they consist of a porous outer carapace surrounding a denser lava core with internal shear zones of variable porosity . Dacite lavas in Japan also exhibit pores with ragged walls, often occurring in "pressure shadows" adjacent to phenocrysts, and are the result of cavitation during ductile-brittle transition . In the Middle to Late Jurassic Serie Tobifera, ignimbrites and rhyolitic lavas show varying porosity and permeability, with quench fractured glasses and non-welded ignimbrites having the highest permeabilities . Additionally, a study on pyroclastic and volcanic lava rocks in a basin found that pyroclastic rocks have higher porosity and permeability in the shallow part of the basin, while volcanic lava rocks have higher porosity and permeability in the deep part . Therefore, the porosity and permeability of lava rock can vary depending on its specific characteristics and geological context.
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| Papers (5) | Insight |
|---|---|
Open access•Journal Article 5 Citations | Yes, lava rocks have a mean porosity of 14.0% in the shallow part of the basin and 7.3% in the deep part of the basin. |
117 Citations | Yes, lava rock can be porous, especially in the case of rhyolitic lavas where autobrecciation during cooling can enhance porosity and permeability. |
| Yes, lava rock can be porous, as mentioned in the abstract of the paper. | |
55 Citations | Yes, lava rock can be porous, as observed in dacite lavas from volcanoes in Japan. |
| Yes, lava rock is porous. |
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