hydration dating वाक्य

उदाहरण वाक्य

1. The hydration dated by Joaqu�n Garc�a-B�rcena to 22, 000 years ago.
2. Obsidian hydration dating was introduced in 1960 by Irving Friedman and Robert Smith of the United States Geological Survey.
3. Modern archaeologists have developed a relative dating system, obsidian hydration dating, to calculate the age of obsidian artifacts.
4. Obsidian hydration dating was introduced in 1960 by Irving Friedman and Robert Smith of the U . S . Geological Survey.
5. Obsidian hydration dating is a geochemical method of determining age in either absolute or relative terms of an artifact made of obsidian.
6. Obsidian hydration dating is a type of dating that uses the weathering rind that develops within artifacts or gravel that are composed of obsidian.
7. The use of Secondary ion mass spectrometry ( SIMS ) in the measurement of obsidian hydration dating was introduced by two independent research teams in 2002.
8. The results of a new dating technique known as quartz hydration dating ( QHD ) demonstrated that the Paris skull had been carved later than a reference quartz specimen artifact, known to have been cut in 1740.
9. The water vapor creates a " hydration rind " in the obsidian, and so this approach is known as " hydration dating " or " obsidian dating ", and is useful for determining dates as far back as 200, 000 years.