Geologist Robert Schoch proposed weather erosion dating for the Great Sphinx, placing its construction around 8,000 years ago at the end of a humid period. Some sources push this back to 12,000 years. This creates a puzzle — Plato's Egyptians claim 9,000-year records, but Greece had no human activity that early. Tentative but intriguing!
Robert Schoch's weather erosion dating places Sphinx at end of humid period ~8,000 years ago

Key facts
- Geologist Robert Schoch proposed weather erosion dating of the Sphinx based on rainfall patterns
- Schoch's dating places construction at the end of the humid period, approximately 8,000 years ago
- Some references cite the Sphinx dating as far back as 12,000 years
- Discussion noted there was no known human activity in Greece 8,000 years ago to match Egyptian antiquity claims
Site mentioned
Sources
[PDF] The Sphinx: dramatising data ... and datingsemanticscholar.org
Geology and archaeology, carefully entwined, form the basis for deciding on a date of construction for the Great Sphinx at Giza. Over a decade after Robert ...
Sphinx water erosion hypothesis - Wikipediaen.wikipedia.org
Ten years later, West sought the opinion of geologist Robert Schoch to validate his claims. In 1990 they traveled together to Egypt, visiting the Sphinx. The ...
The Sphinx Controversy: Another Look at the Geological Evidencehallofmaat.com
Robert M. Schoch put forward the highly controversial proposition that the Great Sphinx of Giza and the adjacent Valley and Sphinx temples do not date, as ...
Robert M. Schoch: Research Highlights The Great Sphinxrobertschoch.com
the Egyptologists were correct in their dating, the extraordinary depth of subsurface weathering supported my conclusion that the core-body of the Sphinx must ...
The Great Sphinx of Egypt: Nature's Shabby-Chic Trick? - GeoExprogeoexpro.com
From a geological point of view I did not find any evidence that could date the carving of the Sphinx to a time earlier than any of the other ...
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