The "black mat" at Murray Springs: picture

The dark organic layer near the onset in which the proposed markers were counted at Murray Springs.

Ammodramus, 2016. CC0

Copies 1

PictureAmmodramus · commons.wikimedia.org · CC01 step from the original

Where it's published

Where it is kept

Murray Springs, San Pedro Valley, Arizona · Archaeological site

Sources 2

File:Murray Springs Clovis site, Clanton clay black mat 1.JPGSRC
Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex (retracted)SRC

Cite it

Mysteries Department. (2026). The "black mat" at Murray Springs: picture [Copy CPY0D51XZGR1PR1]. https://mysteriesdept.com/r/CPY0D51XZGR1PR1

@misc{mysteriesdept_art0d51xysa1g8y,
  title     = {The "black mat" at Murray Springs: picture},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Artifact, catalog key CPY0D51XZGR1PR1},
  url       = {https://mysteriesdept.com/r/CPY0D51XZGR1PR1}
}