wall rock उदाहरण वाक्य
उदाहरण वाक्य
- Felsic dikes, up to 5 m thick, are present in drill core but comprise < 5 percent of the footwall and hanging-wall rocks.
- This occurs when a hot spherical fluid mass of magma moves by softening a thin region of wall rock nearest to the body.
- The most common signatures of stoping are sharp discordant contacts between plutons and wall rocks and a lack of ductile deformation of the wall rocks.
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- The most common signatures of stoping are sharp discordant contacts between plutons and wall rocks and a lack of ductile deformation of the wall rocks.
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- Note also that assimilation of wall rocks takes considerable thermal energy, so this process goes hand in hand with the natural cooling of the magma body.
- At the margins of the volcanic pipe the lamproite is mixed with a volcanic breccia containing shattered wall rock fragments mixed and milled by the eruption.
- While contentious, these jasperoids are thought to form by extreme alteration of wall rocks within a shear zone, and may occur in sediments, andesites, trachytes and basalts.
- This is evident in McDoogle pluton in the Sierra Nevada; this pluton is compositionally layered parallel to its contacts and contains numerous thin concordant panels of wall rock.