National Physical Laboratory Radiocarbon Measurements V

Callow, W. J.; Hassall, G

doi:10.1017/s0033822200019949

Cited by 9 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Method 1. -The normal procedure for calculating C14 age for terrestrial plants, etc., has been published by Callow et al (1965) and Polach (1969) and can be presented, somewhat simplified, as follows. First the activity of the sample is expressed as per mil of the standard: Asan,,,lc =The measured activity in the sample corrected for natural background.…”

Section: Discussionmentioning

confidence: 99%

Radiocarbon dating of marine shells, including a discussion of apparent age of Recent shells from Norway

Mangerud

1972

Boreas

190

View full text Add to dashboard Cite

General problems in determining and interpreting shell C14 dates are discussed: calculation methods, factors influencing primary activity (apparent age), and determination of contamination. It is concluded that shell dates are reliable when handled carefully. Measurements on ten shells, collected between 1898 and 1923 on the Norwegian coast, gave apparent ages from 340±75 to 550±80 years, indicating that apparent age is not a significant problem in dating of Norwegian shells.

show abstract

Section: Discussionmentioning

confidence: 99%

Radiocarbon dating of marine shells, including a discussion of apparent age of Recent shells from Norway

Mangerud

1972

Boreas

190

View full text Add to dashboard Cite

show abstract

“…The radiocarbon age of these samples, 4420 + 102 and 4220 + 105 years B.P. respectively (Callow, Baker and Pritchard, 1963) implies that they may be related to the Upper Forestian, now generally accepted as being equivalent to the Sub-boreal.…”

Section: Introductionmentioning

confidence: 92%

A Radiocarbon‐dated Pollen Diagram From North‐west Scotland

Moar¹

1969

New Phytologist

View full text Add to dashboard Cite

SUMMARYA series of radiocarbon dates from critical levels in a pollen diagram from a site near Scourie, Sutherlandshire, proves the recorded events to be much younger than the trend of the pollen curves would suggest. Evidence of pine forest growing in the area during the late Atlantic and Sub-boreal confirms earlier observations that these forests persisted in north-west Scotland later than in many other parts of the British Isles. The extremely slow rate of accumulation between about 420 cm and 455 cm, 1320 years, implies a break in deposition, but there is no biostratigraphic or lithostratigraphic evidence of this.

show abstract