Radiocarbon date reports have been scanned in multi-page PDF files.
History / Biographical
North Lauder Radiocarbon Date report by IsoTrace Laboratory for Atkinson site #TO-13365.
Radiocarbon dating
The technique of radiocarbon dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.
Radiocarbon dating is used to estimate the age of organic remains from archaeological sites. Organic matter has a radioactive form of carbon (C14) that begins to decay upon death. C14 decays at a steady, known rate of a half life of 5,730 years. The technique is useful for material up to 50,000 years. Fluctuations of C14 in the atmosphere can affect results so dates are calibrated against dendrochronology. Radiocarbon dates are calibrated to calendar years.
Dates are reported in radiocarbon years or Before Present. Before Present refers to dates before 1950. The introduction of massive amounts of C14, due to atomic bomb and surface testing of atomic weapons, has widely increased the standard deviation on all dates after A.D. 1700 causing these dates to be unreliable.
Accelerated mass spectrometry can more accurately measure C14 with smaller samples and can date materials to 80,000 years.
Scope and Content
Sub sub series contains radiocarbon dates from: Atkinson site and Flintstone Hill.
Brandon University Fall convocation and awards ceremonies (October 31, 1987)
87-BUCF-69A
Time: 62:00
Bishop DeRoo: "Rapid City was reached on the eigth day after leaving Winnipeg"
Storage Location
Brandon University photograph collection
Series 13: Videos
Related Material
Morris Predinchuck series (convocation photographs) in the Brandon University photograph collection.
Brandon University fall convocation (October 28, 1989)
89-BUFC-111A
Time: 62:00
Tape A - change at end of intro. of Dr. McCutcheon to receive Hon. Doctorate - Applause - 10-14 secs - Audio fades 5-0.
Storage Location
Brandon University photograph collection
Series 13: Videos
Related Material
Morris Predinchuck series (convocation photographs) in the Brandon University photograph collection.
Brandon University fall convocation (October 27, 1990)
90-BUFC-138A
Time: 60:50
Tape ends after B.Sc. receive diplomas - video goes to BU emblem - 10 sec +
Storage Location
Brandon University photograph collection
Series 13: Videos
Related Material
Morris Predinchuck series (convocation photographs) in the Brandon University photograph collection.
Brandon University 77th convocation AM (May 28, 1988)
88-BUC-80A
Time: 62:00
tape end - Pres. and Chancellor standing (back to camera) ready to greet class of 38/48 - audio applause to fade - video 10 to 15 sec. overlap
Storage Location
Brandon University photograph collection
Series 13: Videos
Related Material
Morris Predinchuck series (convocation photographs) in the Brandon University photograph collection.