Coso artifact

Source: https://en.wikipedia.org/wiki/Coso_artifact

Human time travelers from the future leaving or losing the artifact during a visit to the past.
An example of a 1920s Champion spark plug
An investigation by Pierre Stromberg and Paul Heinrich, using x-rays taken of the object,[3] with the help of members of the Spark Plug Collectors of America, identified the artifact as a 1920s-era Champion spark plug, widely used in the Ford Model T and Model A engines. SPCOA President Chad Windham and other collectors concurred with their assessment.[1]
Stromberg and Heinrich's report[1] indicates that the spark plug became encased in a concretion composed of iron derived from the rusting spark plug. Iron and steel artifacts rapidly form iron-oxide concretions as they rust in the ground.[6]
On April 12, 2018, Stromberg was contacted by the family of one of the co-discoverers of the artifact. Offered an opportunity to inspect the artifact physically, Stromberg accepted and also arranged for the artifact to be inspected by a geologist from the University of Washington Earth and Space Science department. The inspections confirmed the previous conclusion that the artifact was a 1920s-era Champion spark plug.[2]
It had been claimed to have fossil shells on the surfaces "that dated back 500,000 years", but the University of Washington geologist could find no evidence of this claim. This raises the question of "the qualifications and competency of the original alleged geologist … in 1961". The reason the artifact gained the fame that it did was because of the shell claim. As of 2019, the artifact resides at the Pacific Science Center in Seattle, where it is shown in an exhibition called "What Is Reality?"[7]

London Hammer

^ Jump up to: a b c d e f Stromberg, P., and P. V. Heinrich, 2004, The Coso Artifact Mystery from the Depths of Time?, Reports of the National Center for Science Education, v. 24, no. 2, pp. 26–30 (March/April 2004).

^ Jump up to: a b c Stromberg, P., and P. V. Heinrich, 2018, The Coso Artifact Mystery from the Depths of Time?

^ Jump up to: a b "The Coso Artifact | National Center for Science Education". ncse.ngo. Retrieved 2024-02-13.

^ Maxey, V., 1961, The Coso Geode... in Letters...From Our Readers. Desert Magazine of Outdoor Southwest. v. 25, no. 5, p. 4. (May 1961).

^ Walker, M. (2005) Quaternary Dating methods Wiley, New York. 304 pp. ISBN 978-0470869277.

^ Jump up to: a b Cronyn, J. M. (1990) The Elements of Archaeological Conservation Routledge, New York. 326 pp. ISBN 978-0415012072.

^ "Coso Artifact Decisively Identified – and it's Hardly Ancient". Skeptical Inquirer. 43 (2): 10–11. 2019.

Andrew O'Hehir (August 31, 2005). "Archaeology from the dark side". Salon.
Dunning, Brian (February 25, 2014). "Skeptoid #403: Out of Place Artifacts". Skeptoid.

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