volcanic glass sentence in Hindi
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- Monte Arci was one of the most important Mediterranean centres for mining and processing of this volcanic glass in the area.
- Obsidian, a naturally occurring volcanic glass, can also be used to make sharp glass knives; obsidian surgical scalpels are available commercially.
- "' Perlite "'is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian.
- A portion of the southwestern flank of Mount Fee comprises no volcanic glass, but rather composed of an abnormal cryptocrystalline matrix.
- Soils with duripans are often geographically associated with areas of volcanic activity, and show evidence of ash or volcanic glass deposition.
- Although such bladed tools were often made of stone, naturally occurring glasses such as obsidian, natural volcanic glass, were also commonly used.
- Products of this rhyolitic eruption are pumice and obsidian, the volcanic glass that Native Americans used to make arrow points and scrapers.
- It commonly occurs as a devitrification product of volcanic glass shards in tuff and as vesicle fillings in basalts, andesites and rhyolites.
- This rock is grey-bluish and contains anorthite ( labradorite kind ) and hornblendes trapped in volcanic glass comprising feldspar, pyroxene and olivine microlithes.
- The dacite volcanics composing Mount Fee contain brown volcanic glass as much as 70 % and vesicular textures as much as 15 %.
- Little Ring Mountain at the northern end of the field contains at least 70 % brown volcanic glass with isolated phenocrysts of plagioclase.
- Another technique used by archaeologists is to inspect the depth of penetration of water vapor into chipped obsidian ( volcanic glass ) artifacts.
- For instance, water causes magma to cool and solidify much more quickly than in a terrestrial eruption, often turning it into a volcanic glass.
- When heated to their melting point, terrestrial volcanic glasses will turn into a foamy glass because of their content of water and other volatiles.
- Although tektites are superficially similar to some terrestrial volcanic glasses ( obsidians ), they have unusual distinctive physical characteristics that distinguish them from such glasses.
- The fad is first used to put a thinned coat of shellac on, then thicker coats with small amounts of superfine pumice, a crushed volcanic glass.
- Named after the volcanic glass crystals found in the soil, Diamond Mountain rises above the valley west of Highway 29 between St . Helena and Calistoga.
- In stratigraphy and tephrochronology, completely devitrified ( weathered volcanic glass ) ash-fall beds are commonly referred to as K-bentonites when the dominant clay species is illite.
- Crossed polarized light image of melilite in Moiliili lava flow, Moiliili Quarry, Honolulu, O ahu, Hawai i surrounded by matrix of granular nepheline and volcanic glass.
- The often rarely preserved flow top breccia and pillow margin zones in some komatiite flows are essentially volcanic glass, quenched in contact with overlying water or air.
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