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CARBON-14 DATES

A total of 15 C-14 dates have been obtained from charcoal recovered in various archaeological excavations at the America’s Stonehenge site. These dates are given as B.P. dates known as “years before present” which is currently defined as the year 1950. These dates are consider “radio carbon years” which is different calendar years. A few of the tests have “corrected dates.” These are indicated by (date)*.

Click the links to view the original laboratory reports. Copies of the original reports courtesy of America’s Stonehenge Inc.

Date (B.P.)

Location

Report #

Citation

6530 +/- 40
(7389 BP)*

“Excavation in wall east of north stone ... down hill”

8923

Details from information posted at Visitor’s Center & Lab Report (1995)

3470 +/- 30
(3697 BP)*

Fire pit at North Stone. Excavation by Stewart-Smith, Hume & Hinton.

 8924

Details from information posted at Visitor’s Center & Lab Report (1995)

3475 +/- 210
(3775 BP)*

Flecks of charcoal found lodged between the exterior stones of the north wall of the Collapse Chamber 2 to 4 inches above bedrock. It has been subsequently determined that charcoal was in backfill soil and does not date the chamber.

GX2310

Anon 1971, 40
Whittall 1991, 64

2995 +/- 180

Outside of the north wall of Collapsed Chamber (charcoal, fire-burnt stone spalls, hammer stone, broken pick, scraper) 24” level of excavation.

GX1608

Whittall 1969b, 50-53
Whittall 1991, 64

2120 +/- 95

Charcoal found on and in a seam of quarried bedrock (below ground near ditch drain & low walled enclosure)

GX2029

Whittall 1971, 19-20
Whittall 1991, 64

1910 +/- 190

Indian Lodge (parking lot) (C13 Corrected)

GX20669

Lab Report (1995)

1640 +/- 135

Indian Lodge (parking lot)

GX20670

Posted at Visitor’ s Center

1430 +/- 135

Oracle Chamber / Covered Drain Leading to Sump Pit

GX4732

Whittall 1991, 64

1250 +/- 100

North Stone / Hearth

GX15349

Whittall 1991, 64

1195 +/- 75

Indian Lodge (parking lot) (C13 Corrected)

GX20671

Lab Report (1995)

less than 400

Covered Drain in Sunken Courtyard / Re-used for House Foundation 1825 - 1849. Archaeologist Frank Glynn argued that the sample came from soil contaminated by Pattee era sediments which intermixed with earlier sediments in the drain.

GX0025

Glynn 1967, 55
Whittall 1991, 64
Lab Report (1967)

260 +/- 90

Wood sample from root of a pine stump (Roots of pine stump went under wall of Collapsed Chamber proving the chamber was older than 260 years old)

 GX1118

Glynn 1967, 57
Whittall 1991, 64

220 +/- 140

Fire Pit excavated by James Whittall
Cover letter mentions brickmaking suggesting a location near the clay pit.

GX1651

Posted at Visitor’s Center

75 +/- 160

 Excavation by W.E.J. Hinton Jr. (No Information)

GX15348

Lab Report (1989)

140

Covered Drain (1810 A.D.) Sunken Courtyard / Reused for House Foundation 1825 -1849. Archaeologist Frank Glynn argued that the sample came from soil contaminated by Pattee era sediments which intermixed with earlier sediments in the drain.

GX0024

Glynn 1967, 55

* These are are calibrated or “corrected” dates and considered more accurate.

 

 

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Page Last Update 09-05-2010

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