# The low-velocity layer is subsurface weathering whose depth is proportional to exposure time, and the thinner…

> Disputed: The low-velocity layer is subsurface weathering whose depth is proportional to exposure time, and the thinner rear layer shows the rear was cut…

Source: https://mysteriesdept.com/mysteries/great-sphinx/answers/ANS0CTWSREW6Q63/the-low-velocity-layer-is-subsurface-weathering-whose-depth  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Great Sphinx of Giza](https://mysteriesdept.com/mysteries/great-sphinx)[Does the weathered layer under the ditch floor measure how long each part has been exposed?](https://mysteriesdept.com/mysteries/great-sphinx/questions/QST0CTWSD7G59TK/does-the-weathered-layer-under-the-ditch-floor-measure-how)Answer

Answer · Great Sphinx of Giza

# The low-velocity layer is subsurface weathering whose depth is proportional to exposure time, and the thinner…

The low-velocity layer is subsurface weathering whose depth is proportional to exposure time, and the thinner rear layer shows the rear was cut later.

**Disputed** Answers **1** questionPublished0

## Where it stands

**Disputed** One piece of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- Velocities in the weathered layer are similar wherever the layer is equally old.
- A repeat survey with modern equipment reproduces the depth contrast.
- Cores through the layer show weathering products, not original depositional fabric.

## What would rule it out

- Cores showing the low-velocity layer is an unweathered reef or shoal facies.

## Evidence 1 for · 1 against

[The 1991 refraction lines found a 1.8 to 2.5 m weathered layer on the front and sides and 1.2 m at the rear.](https://mysteriesdept.com/mysteries/great-sphinx/evidence/EVD0CTWSRPP41GH/the-1991-refraction-lines-found-a-1-8-to-2-5-m-weathered)

Suggestive

FOR

[The rear line's velocities are 23 to 28 percent lower in both layers, the opposite of what less weathering…](https://mysteriesdept.com/mysteries/great-sphinx/evidence/EVD0CTWSRYG0HRS/the-rear-lines-velocities-are-23-to-28-percent-lower-in-both)

Supported

AGAINST

## The questions it answers

[Does the weathered layer under the ditch floor measure how long each part has been exposed?](https://mysteriesdept.com/mysteries/great-sphinx/questions/QST0CTWSD7G59TK/does-the-weathered-layer-under-the-ditch-floor-measure-how)

Part of [What explains the weathering of the body and the enclosure walls?](https://mysteriesdept.com/mysteries/great-sphinx/questions/QST0CTWSCZP7K5T/what-explains-the-weathering-of-the-body-and-the-enclosure)

Most likelyThe layer is a depositional facies (coral-rich shoal-reef limestone) or a picking choice, and its thickness…

## Cite it

```
Mysteries Department. (2026). The low-velocity layer is subsurface weathering whose depth is proportional to exposure time, and the thinner… [Answer ANS0CTWSREW6Q63]. https://mysteriesdept.com/r/ANS0CTWSREW6Q63
```

Key

**ANS** 0CTWSREW6Q63

Kind

Answer · hypothesis

Origin

Published

Version

1

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