scholarly journals Illinois State Geological Survey Radiocarbon Dates X

Radiocarbon ◽  
1992 ◽  
Vol 34 (1) ◽  
pp. 83-104 ◽  
Author(s):  
Chao-Li Liu ◽  
D. L. Asch ◽  
B. W. Fisher ◽  
D. D. Coleman
Keyword(s):  
Radiocarbon Dating ◽  
Geological Survey ◽  
Radiocarbon Dates ◽  
Cultural Contexts ◽  
Geological Significance ◽  
West Central ◽  
Northwestern University ◽  
Partial List ◽  
University Department ◽  
Central Illinois

The following is a partial list of samples of archaeological interest processed between February 1981 and October 1985 at the Illinois State Geological Survey (ISGS) Radiocarbon Dating Laboratory. The list contains samples from west-central Illinois that were related to projects conducted by current or former researchers at the Center for American Archeology (CAA) (formerly Foundation for Illinois Archaeology) and Northwestern University, Department of Anthropology, or, as noted, by colleagues from other institutions. Although some of the samples reported here came from non-cultural contexts and are primarily of geological significance, all were from or related to archaeological investigations.

scholarly journals Illinois State Geological Survey Radiocarbon Dates III

Radiocarbon ◽  
1972 ◽  
Vol 14 (1) ◽  
pp. 149-154 ◽  
Author(s):  
Dennis D. Coleman
Keyword(s):  
Sample Preparation ◽  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Geological Survey ◽  
Radiocarbon Dates

The following date list includes all samples processed from December 1969 through November 1970 at the Illinois State Geological Survey Radiocarbon Dating Laboratory. The benzene liquid scintillation technique was used, following the method of Noakes, Kim, and Stipp (1965), and Noakes, Kim, and Akers (1967). Detailed sample preparation procedures used in this laboratory have been reported by Kim and Ruch (1969), and Kim, Ruch, and Kempton (1969).

scholarly journals Illinois State Geological Survey Radiocarbon Dates II

Radiocarbon ◽  
1970 ◽  
Vol 12 (2) ◽  
pp. 503-508 ◽  
Author(s):  
Stephen M. Kim
Keyword(s):  
Radiocarbon Dating ◽  
Geological Survey ◽  
Radiocarbon Dates

The following date list includes samples processed by the Illinois State Geological Survey Radiocarbon Dating Laboratory from September 1968 through November 1969. Detailed descriptions of sample methods are published elsewhere (Kim and Ruch, 1969; Kim, Ruch, and Kempton, 1969).

scholarly journals Illinois State Geological Survey Radiocarbon Dates V

Radiocarbon ◽  
1974 ◽  
Vol 16 (1) ◽  
pp. 105-117 ◽  
Author(s):  
Dennis D Coleman
Keyword(s):  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Geological Survey ◽  
Bone Collagen ◽  
Radiocarbon Dates ◽  
Laboratory Procedures

All samples processed from November 1971 through January 1973 at the Illinois State Geological Survey Radiocarbon Dating Laboratory are reported here. The benzene liquid scintillation technique was used. Laboratory procedures used were the same as those reported by Coleman (1973), with the exceptions that bone collagen was separated by the Longin (1970; 1971) technique and acetylene was trimerized to benzene as described by Coleman, et al (1972).

scholarly journals Illinois State Geological Survey Radiocarbon Dates IX

Radiocarbon ◽  
1986 ◽  
Vol 28 (1) ◽  
pp. 110-133 ◽  
Author(s):  
Chao-Li Liu ◽  
Kerry M Riley ◽  
Dennis D Coleman
Keyword(s):  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Geological Survey ◽  
Radiocarbon Dates ◽  
Laboratory Procedures

The following list contains samples of geologic interest that were processed from June 1980 through March 1983 at the Illinois State Geological Survey (ISGS) Radiocarbon Dating Laboratory. The benzene liquid scintillation technique was used following laboratory procedures previously reported by Coleman (1973, 1974).

scholarly journals Illinois State Geological Survey Radiocarbon Dates IV

Radiocarbon ◽  
1973 ◽  
Vol 15 (1) ◽  
pp. 75-85 ◽  
Author(s):  
Dennis D. Coleman
Keyword(s):  
Sample Preparation ◽  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Sample Pretreatment ◽  
Geological Survey ◽  
Preparation Procedure ◽  
Synthesis System ◽  
Radiocarbon Dates ◽  
Sample Preparation Procedure ◽  
Scintillation Method

This date list includes all samples processed from December 1970 through November 1971 at the Illinois State Geological Survey Radiocarbon Dating Laboratory. The benzene liquid scintillation method of Noakes, Kim, and Stipp (1965), and Noakes, Kim, and Akers (1967) was used. A new benzene synthesis system has been completed, and several changes in the sample preparation procedure have been made since the last date list report (Coleman, 1972). A brief summary of the benzene synthesis and sample pretreatment techniques used to determine the dates reported here follows.

scholarly journals Illinois State Geological Survey Radiocarbon Dates VII

Radiocarbon ◽  
1981 ◽  
Vol 23 (3) ◽  
pp. 352-383 ◽  
Author(s):  
Chao Li Liu ◽  
Dennis D Coleman
Keyword(s):  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Geological Survey ◽  
Radiocarbon Dates ◽  
Laboratory Procedures

The following list contains samples of geologic interest that were processed from February 1974 through May 1980 at the Illinois State Geological Survey (ISGS) Radiocarbon Dating Laboratory. The archaeologic samples processed during the same period will be published in our next date list. The benzene liquid scintillation technique was used following laboratory procedures previously reported by Coleman (1973; 1974).

scholarly journals Geological Survey of Canada Radiocarbon Dates VIII

Radiocarbon ◽  
1969 ◽  
Vol 11 (01) ◽  
pp. 22-42 ◽  
Author(s):  
J. A. Lowdon ◽  
R. Wilmeth ◽  
W. Blake
Keyword(s):  
Radiocarbon Dating ◽  
Geological Survey ◽  
Radiocarbon Dates ◽  
Preliminary Testing ◽  
Proportional Counters

The Radiocarbon Dating Laboratory of the Geological Survey of Canada routinely operates two proportional counters; one 2 L and one 5 L. The 2 L counter is operated entirely at 2 atm. and the 5 L counter mainly at 1 atm. On occasion the 5 L counter is operated at 4 atm. Detailed descriptions of these two counters have recently been published (Dyck, 1967a). A I L counter has been fabricated and is now undergoing preliminary testing.

scholarly journals Department of Earth Sciences at the University of Rome Radiocarbon Dates III

Radiocarbon ◽  
1994 ◽  
Vol 36 (1) ◽  
pp. 143-152 ◽  
Author(s):  
Gilberto Calderoni ◽  
Isabella Caneva ◽  
Alberto Cazzella ◽  
Marcella Frangipane ◽  
Vincenzo Petrone
Keyword(s):  
Earth Sciences ◽  
Radiocarbon Dating ◽  
Radiocarbon Dates ◽  
Partial List ◽  
University Of Rome ◽  
The University

This is a partial list of archaeological samples processed between May 1990 and December 1992 at the Department of Earth Sciences Radiocarbon Dating Laboratory of the University of Rome. Most of the samples in the list, both from Italy and other countries, were related to excavations carried out by researchers at the University of Rome, Department of Scienze dell'Antichità. Although primarily measured for archaeological studies, some of these dates also have geological and paleoenvironmental relevance.

scholarly journals Radiocarbon Dating of Buried Trees and Climate Change in West-Central Oklahoma

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 611-614
Author(s):  
Owen K. Davis ◽  
Dai Kaimei ◽  
Jeffrey S. Dean ◽  
Jim Parks ◽  
Robert M. Kalin
Keyword(s):  
Climate Change ◽  
Solar Activity ◽  
Tree Rings ◽  
Negative Correlation ◽  
Radiocarbon Dating ◽  
Juniperus Virginiana ◽  
Radiocarbon Dates ◽  
American Midwest ◽  
West Central ◽  
Global Cooling

Eleven radiocarbon dates and tree-ring analyses of 3 juniper logs demonstrate the potential for 14C analysis of buried logs in the American Midwest. Three junipers (cf. Juniperus virginiana) were recovered from 9.20, 10.50, and 10.60 m in the fill of Carnegie Canyon, west-central Oklahoma. Their 14C ages are calibrated between 3300 and 2800 yr ago. A negative correlation of tree rings and ∆14C (p = 0.013) supports the findings of Schmidt and Gruhle (1988), who demonstrate the association of global cooling with reduced solar activity.

scholarly journals Illinois State Geological Survey Radiocarbon Dates VI

Radiocarbon ◽  
1975 ◽  
Vol 17 (2) ◽  
pp. 160-173 ◽  
Author(s):  
Dennis D Coleman ◽  
Chao Li Liu
Keyword(s):  
Radiocarbon Dating ◽  
Liquid Scintillation ◽  
Geological Survey ◽  
Radiocarbon Dates ◽  
Laboratory Procedures

All samples processed from February 1973 through January 1974 at the Illinois State Geological Survey Radiocarbon Dating Laboratory are reported here. The benzene liquid scintillation technique was used. Laboratory procedures used were the same as those previously reported by Coleman (1973, 1974).

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