volcanic glass वाक्य

उदाहरण वाक्य

1. But the obsidian, the black volcanic glass fashioned into the villagers'sharpest knife blades, came either from the Aeolian Islands off Sicily or the Ponza Islands, closer to Rome.
2. In texture and colour black sea glass resembles black beach rock, very much resembling the extrusive igneous rock basalt, or weathered black obsidian, a natural black volcanic glass.
3. Filling spaces in between the pillows in the pillow lava units are dispersed metal oxide sediments that can also be seen as carbonates, volcanic glass and pelagic sediments.
4. Pele s tears are also found entangled within fine strands of volcanic glass known as Pele s hair and it was considered that they formed together under similar conditions.
5. They were likely formed from fragments of volcanic glass formed in the steam explosions of lava touching down against water, similar to the process that is happening today on Kilauea.
6. Unlike terrestrial volcanic glass, a tektite will produce only a few bubbles at most when heated to its melting point, because of its much lower water and other volatiles content.
7. Volcanic ashes and pumices largely composed of volcanic glass are commonly used, as are deposits in which the volcanic glass has been altered to zeolites by interaction with alkaline waters.
8. In the present day San Francisco del Monte area, an extensive deposition of damaged polished adze were found with wornout flake tools mode of obsidian, or volcanic glass and tektites.
9. Volcanic ashes and pumices largely composed of volcanic glass are commonly used, as are deposits in which the volcanic glass has been altered to zeolites by interaction with alkaline waters.
10. The technology to make scalpel blades out of smoky obsidian, a volcanic glass that allows for the sharpest blade production, was first developed by Don Crabtree in the late 1970s.