James R Duncan
Biographic Data
| ID | 4054285 |
|---|---|
| NAME | James R Duncan |
| GIVEN NAMES | James R |
| FAMILY NAME | Duncan |
| SIGNATURE | DUNCAN J R |
| AFFILIATIONS | Lawrence Livermore National Laboratory |
| ORCID | 0000-0002-0337-8805 |
| VERIFIED | Yes |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 11 |
| WORKS AS AUTHOR | 7 |
| WORKS AS EDITOR | 1 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Ancient Ritual Behavior as Reflected in the Imagery at Picture Cave, Missouri, USA
Since 1992, we have promoted the use of descriptions from ethnographic data, including ancient, surviving oral traditions, to aid in explaining the iconography portrayed in pictographs and petroglyphs found in Missouri, particularly those at Picture Cave. The literature to which we refer is from American Indian groups related linguistically and connected to the pre-Columbian inhabitants of Missouri. In addition, we have had on-going conversations…
Ohio Rock Art and Serpent Mound
James Swauger's study of Ohio's rock art, Petroglyphs of Ohio, has been the definitive guide to the subject since its publication in 1984. Swauger concluded that the Indigenous American Indian petroglyphs were created during the late precontact period and proposed that the makers of the designs were “proto-Shawnee,” but he deliberately eschewed any attempt to attribute meanings to the designs. Building on Swauger's work, we consider Ohio rock art…
Effigy mounds and rock art of midcontinental North America
The effigy mounds of the Upper Midwest and the Ohio Valley long have been regarded as distinct and independent cultural developments. A review of effigy mound iconography in both regions reveals similarities suggesting that they are elements of a shared cultural tradition. Comparisons with rock art imagery from the Upper Midwest and Missouri, the inferred centers of this artistic and ceremonial florescence, reveal co-occurrences of specific motif…
Landscape, cosmology, and the Old Woman
Arguments for the Age of Serpent Mound
Serpent Mound, in northern Adams County, Ohio, USA, is one of the most iconic symbols of ancient America and yet there is no widely agreed upon date for the age of its original construction. Some archaeologists consider it to have been built by the Adena culture around 300bc, while others contend it was built by the Fort Ancient culture aroundad1100. There have been three attempts to obtain radiometric ages for the effigy, but they have yielded i…
The Rock-Art of Eastern North America
AMS Radiocarbon Dates for Charcoal from Three Missouri Pictographs and Their Associated Iconography
This report presents four radiocarbon dates of charcoal pigments from Picture Cave, a site located in a remote wooded area in east-central Missouri. Carbon from charcoal pigments was extracted from three rock drawings on the wall of this cave. The four pigment samples contained sufficient carbon for accelerator mass spectrometric radiocarbon analysis. These black pigment samples (red and white paints are also present in the cave) yielded dates th…
Passive smoking as well as active smoking increases the risk of acute stroke
This study is one of the few to investigate the association between passive smoking and the risk of acute stroke. We found a significantly increased risk of stroke in men and in women. This study also confirms the higher risk of stroke in men and women who smoke cigarettes compared with non-smokers. The stroke risk increases further when those who have been exposed to ETS are excluded from the non-smoking reference group. These findings also sugg…
AMS Radiocarbon Dates for Charcoal from Three Missouri Pictographs and Their Associated Iconography
This report presents four radiocarbon dates of charcoal pigments from Picture Cave, a site located in a remote wooded area in east-central Missouri. Carbon from charcoal pigments was extracted from three rock drawings on the wall of this cave. The four pigment samples contained sufficient carbon for accelerator mass spectrometric radiocarbon analysis. These black pigment samples (red and white paints are also present in the cave) yielded dates th…
Arguments for the Age of Serpent Mound
Serpent Mound, in northern Adams County, Ohio, USA, is one of the most iconic symbols of ancient America and yet there is no widely agreed upon date for the age of its original construction. Some archaeologists consider it to have been built by the Adena culture around 300bc, while others contend it was built by the Fort Ancient culture aroundad1100. There have been three attempts to obtain radiometric ages for the effigy, but they have yielded i…
Effigy mounds and rock art of midcontinental North America
The effigy mounds of the Upper Midwest and the Ohio Valley long have been regarded as distinct and independent cultural developments. A review of effigy mound iconography in both regions reveals similarities suggesting that they are elements of a shared cultural tradition. Comparisons with rock art imagery from the Upper Midwest and Missouri, the inferred centers of this artistic and ceremonial florescence, reveal co-occurrences of specific motif…
Passive smoking as well as active smoking increases the risk of acute stroke
This study is one of the few to investigate the association between passive smoking and the risk of acute stroke. We found a significantly increased risk of stroke in men and in women. This study also confirms the higher risk of stroke in men and women who smoke cigarettes compared with non-smokers. The stroke risk increases further when those who have been exposed to ETS are excluded from the non-smoking reference group. These findings also sugg…
AMS Radiocarbon Dates for Charcoal from Three Missouri Pictographs and Their Associated Iconography
This report presents four radiocarbon dates of charcoal pigments from Picture Cave, a site located in a remote wooded area in east-central Missouri. Carbon from charcoal pigments was extracted from three rock drawings on the wall of this cave. The four pigment samples contained sufficient carbon for accelerator mass spectrometric radiocarbon analysis. These black pigment samples (red and white paints are also present in the cave) yielded dates th…
The Rock-Art of Eastern North America
Landscape, cosmology, and the Old Woman
Arguments for the Age of Serpent Mound
Serpent Mound, in northern Adams County, Ohio, USA, is one of the most iconic symbols of ancient America and yet there is no widely agreed upon date for the age of its original construction. Some archaeologists consider it to have been built by the Adena culture around 300bc, while others contend it was built by the Fort Ancient culture aroundad1100. There have been three attempts to obtain radiometric ages for the effigy, but they have yielded i…
Effigy mounds and rock art of midcontinental North America
The effigy mounds of the Upper Midwest and the Ohio Valley long have been regarded as distinct and independent cultural developments. A review of effigy mound iconography in both regions reveals similarities suggesting that they are elements of a shared cultural tradition. Comparisons with rock art imagery from the Upper Midwest and Missouri, the inferred centers of this artistic and ceremonial florescence, reveal co-occurrences of specific motif…
Ohio Rock Art and Serpent Mound
James Swauger's study of Ohio's rock art, Petroglyphs of Ohio, has been the definitive guide to the subject since its publication in 1984. Swauger concluded that the Indigenous American Indian petroglyphs were created during the late precontact period and proposed that the makers of the designs were “proto-Shawnee,” but he deliberately eschewed any attempt to attribute meanings to the designs. Building on Swauger's work, we consider Ohio rock art…
Ancient Ritual Behavior as Reflected in the Imagery at Picture Cave, Missouri, USA
Since 1992, we have promoted the use of descriptions from ethnographic data, including ancient, surviving oral traditions, to aid in explaining the iconography portrayed in pictographs and petroglyphs found in Missouri, particularly those at Picture Cave. The literature to which we refer is from American Indian groups related linguistically and connected to the pre-Columbian inhabitants of Missouri. In addition, we have had on-going conversations…
Archaeology (5 works) · Archaeology and ancient environmental studies (5 works) · Archaeology and Rock Art Studies (5 works) · Iconography (5 works) · Geography (4 works) · History (4 works) · Ancient history (3 works) · Art (3 works) · Cave (3 works) · Rock art (3 works)