Some of the most interesting scientific research papers are those that cross or combine different scientific disciplines. A recent article did just that by combining geology, archaeology and physics.
"Little black rocks in the desert" : an introduction -- Obsidian petrology and geologic history -- Obsidian sources : geology, geography, and archaeology -- Beyond a "fishing expedition" : laboratory ...
Aztec duck-head pendants recovered from Tenochtitlán were made using volcanic glass called obsidian. - Mirsa Islas/Courtesy Proyecto Templo Mayor, INAH Sign up for CNN’s Wonder Theory science ...
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