
The Mystery of Pumapunku Part 2
Astonishing Legends
00:00
Is It Possible to Make an Explosive by Mistake?
Puma punku megalithic blocks were cast 14 hundred years ago to make their geopolimer sandstone. The builders may have transported finely weathered, calintized sandstone from the calamarca site and added foreign elements such as natron or sodium carbonate. A study demonstrates that these architectural components were fashioned with a wet sand geo polamer moulding technique. An optical thin section studies shows grain boundaries made of a thick, fluidal red paro silate matrix. To our knowledge, this feature is very unusual in sandstone formed geologically. It represents a unicum, which i had to look up yesterday. And supports the idea of artificial sandstone.
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