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Noble Gas Isotopes and Nitrogen Isotopologues Reveal Deep Sources and Subsurface Fractionation in Yellowstone Gases. [PDF]

open access: yesACS Earth Space Chem
Broadley MW   +13 more
europepmc   +1 more source
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Obsidian

2021
Obsidian is silicic volcanic glass that has undergone minimal crystallization, and has been documented in volcanic products spanning rhyolitic to phonolitic compositions. Although most abundant within lava flows, obsidian is also found in volcanic bombs and shallow intrusion margins.
Tuffen, Hugh   +4 more
  +4 more sources

Obsidian

Rocks & Minerals, 1972
Les Johnson, Carny Hound
openaire   +1 more source

The Italian obsidian sources

2005
In Europe obsidian is a very rare material, in comparison with other sectors of Earth, such as, for example, the adjacent Near East. In Western Europe obsidian workable by prehistoric men was recognised only in four volcanic complexes, located in the IIalian islands of Sardinia, Palmarola, Lipari and Pantelleria.
BIGAZZI G, ODDONE M, RADI, GIOVANNA
openaire   +3 more sources

Obsidian

Rocks & Minerals, 1974
openaire   +1 more source

Obsidian Fields

San Antonio Review, 2023
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