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It is famous for its large circular structures that contain massive stone pillars – among the world's oldest known megaliths. Many of these pillars are decorated with anthropomorphic details, clothing, and sculptural reliefs of wild animals, providing archaeologists rare insights into prehistoric religion and the particular iconography of the ...
Rio Huitzilapan debris flows est. 600–870 Debris flows destroyed village of Barranca Grande, and were 40 to 65 m (131 to 213 ft) deep. Debris flows extended >40 km (25 mi). Triggered by M~6.5 earthquake. [69] 1921 Almaty, Kazakhstan: Alma-Ata Debris Flows ~500 A debris flow in the Valley of Alma-Atinka River destroyed the town of Alma-Ata. [69]
This site is on and in late middle-Pleistocene fanglomerates (now-cemented alluvial debris flow deposits) known variously as the Calico Hills, the Yermo Hills, or the Yermo formation. Holocene evidence includes petroglyphs and trail segments that are probably related to outcrops of local high-quality siliceous rock (primarily chalcedony in ...
The Meadowcroft Rockshelter is an archaeological site which is located near Avella in Jefferson Township, Pennsylvania. [4] The site is a rock shelter in a bluff overlooking Cross Creek (a tributary of the Ohio River), and contains evidence that the area may have been continually inhabited for more than 19,000 years.
The later Cornish term was quoit – an English-language word for an object with a hole through the middle preserving the original Cornish language term of tolmen – the name of another dolmen-like monument is in fact Mên-an-Tol 'stone with hole' (Standard Written Form: Men An Toll.) [6] In Irish Gaelic, dolmens are called Irish: dolmain. [7]
A new analysis of this debris has resolved a long debate about the nature of the asteroid, showing that it was a type that originated beyond Jupiter in the outer solar system.
Blanks are the starting point of a lithic reduction process, and during prehistoric times were often transported or traded for later refinement at another location. Blanks might be stones or cobbles, just as natural processes have left them, or might be quarried pieces, or flakes that are debitage from making another piece. Whatever their ...
Debitage refitting is a process whereby the collected assemblages of debitage are painstakingly put back together, like pieces in a puzzle. This can sometimes indicate the nature of the tools being produced, although missing pieces are a significant problem.