Tuesday, November 16, 2021

9000-year-old Obsidian Tools Found at Bottom of Lake Huron

The two ancient obsidian flakes recovered from a now submerged archaeological site beneath Lake Huron represent the oldest & farthest east confirmed occurrence of western obsidian in the continental United States.

Obsidian, or volcanic glass, is a prized raw material for knappers, both ancient & modern, with its lustrous appearance, predictable flaking, & resulting razor-sharp edges.

As such, it was used & traded widely throughout much of human history.

Obsidian from the Rocky Mountains & the West was an exotic exchange commodity in Eastern North America.

“Obsidian from the far western United States is rarely found in the east,” said Dr. Ashley Lemke, an anthropologist in the Department of Sociology & Anthropology at the University of Texas at Arlington.

The two ancient obsidian artifacts were recovered from a sample of sediment that was hand excavated at a depth of 32 m (105 feet) in an area between two submerged hunting structures at the bottom of Lake Huron.

“This particular find is really exciting because it shows how important underwater archaeology is,” Dr. Lemke said.

“The preservation of ancient underwater sites is unparalleled on land, & these places have given us a great opportunity to learn more about past peoples.”

The larger artifact is a mostly complete, roughly triangular, biface thinning flake made from a black & translucent material with a sub-vitreous texture.

The second artifact is a small, very thin, translucent flake on a material visually similar to the larger specimen.

“These tiny obsidian artifacts reveal social connections across North America 9,000 years ago,” Dr. Lemke said.

“The artifacts found below the Great Lakes come from a geological source in Oregon, 4,000 km (2,485 miles) away — making it one of the longest distances recorded for obsidian artifacts anywhere in the world.”

See: PacTV site 16th November, 2021

Friday, November 12, 2021

What We Have Learned, so far, about Ancient Cave Art


Neil Bockoven tells us that the oldest works of "cave art" presently documented are handprints in Tibet that may be 226,000 years old  - probably Denisovan or Neanderthal (Zhang et al. 2021). 

The oldest Homo sapien drawing is a cross-hatching on a piece of red ochre made more than 73,000 years ago in South Africa (Henshilwood et al. 2018).

The oldest known cave painting is a Neanderthal's 64,000-year-old, red hand stencil in Spain (Hoffmann et al. 2018). 

Nearly 350 caves that contain prehistoric art have been discovered in Europe, but a lot has been found elsewhere too. The most common subjects in cave paintings are large animals, such as horses, bison, aurochs, and deer, as well as tracings of human hands. 

The oldest representational painting - of a warty pig - is found in Indonesia and dates to at least 45,500 years (Brumm et al. 2021). All of these wonderful works of art help define the early edge of human abstract thinking. 

See Ancient Wonders of Archaeology, Art History & Architecture