Barbara A Cra
Biographic Data
| ID | 4053207 |
|---|---|
| NAME | Barbara A Cra |
| GIVEN NAMES | Barbara A |
| FAMILY NAME | Cra |
| SIGNATURE | CRA B A |
| AFFILIATIONS | University of Wisconsin–Oshkosh |
| ORCID | 0000-0002-8468-9567 |
| VERIFIED | Yes |
| TOTAL WORKS | 7 |
| TOTAL CITATIONS | 34 |
| AUTHOR COUNT | 7 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Stone and mammoth ivory tool production, circulation, and human dispersals in the middle Tanana Valley, Alaska: Implications for the Pleistocene peopling of the Americas
In the middle Tanana Valley of central Alaska, the Holzman archaeological site is located along Shaw Creek's west bank. For the last three decades, the Tanana Valley has been the focus of intense Late Pleistocene archaeological and geological investigations into the interaction between the First Alaskans and Ice Age megafauna, particularly woolly mammoth. Archaeological excavations at the Holzman site have uncovered expedient tools on local quart…
The Swan Point Site, Alaska: The Chronology of a Multi-Component Archaeological Site in Eastern Beringia
The Swan Point site in interior Alaska contains a significant multi-component archaeological record dating back to 14,200 cal BP. The site’s radiocarbon ( 14 C) chronology has been presented in scattered publications that mostly focus on specific archaeological periods in Alaska, in particular its terminal Pleistocene components associated with the East Beringian tradition. This paper synthesizes the site’s 14 C data and provides sequential Bayes…
Archaeological Recovery of Late Pleistocene Hair and Environmental DNA from Interior Alaska
Ancient hair and remnant plant DNA are important environmental proxies that preserve for millennia in specific archaeological contexts. However, recovery has been rare from late Pleistocene sites and more may be found if deliberately sought. Once discovered, singular hair fragments are not easily identified to taxa through comparative analyses and environmental DNA (eDNA) extraction can be difficult depending on preservation or contamination. In …
Mammoth Ivory Rods in Eastern Beringia: Earliest in North America
The Holzman archaeological site, located along Shaw Creek in interior Alaska, contained two mammoth ivory rods, of which one is bi-beveled, within a stratigraphically sealed cultural context. Dated 13,600-13,300 cal BP, these are the earliest known examples of osseous rod technology in the Americas. Beveled ivory, antler, and bone rods and points share technological similarities between Upper Paleolithic Europe, Asia, eastern Beringia, and the Cl…
The micromorphology of loess‐paleosol sequences in central Alaska: A new perspective on soil formation and landscape evolution since the Late Glacial period (c. 16,000 cal yr BP to present)
The middle Tanana Valley of central Alaska contains a well‐preserved record of human occupation and paleoenvironmental change since the Late Glacial period (c. 16,000 cal yr BP) and is a critical region for understanding human dispersal into the Americas. Micromorphology analysis of soils and sediments from six archaeological sites yields valuable information about soil formation processes and landscape evolution during the Late Glacial and into …
Holzman South: A Late Pleistocene Archaeological Site along Shaw Creek, Tanana Valley, Interior Alaska
This report introduces the newly discovered Holzman South site with Pleistocene-aged components dated prior to the appearance of Clovis in North America. The site contains evidence for mammoth–human interaction, hearth activity areas, marrow extraction, and localized stone utilization in the middle Tanana Valley of Alaska, the northern gateway of the interior Canadian Ice Free Corridor
Gc/MS Analysis of Fatty Acids From Ancient Hearth Residues at the Swan Point Archaeological Site
Gas chromatography – mass spectrometry (GC/MS) is used to analyse soil residues from hearth sites in Swan Point, Alaska. An experimental hearth is also prepared by burning animal bones to study the characteristics of bone fires and the lipid residues that they leave embedded in soil. Hearth soil samples are derivatized with HCl in methanol to convert bound and unbound fatty acids into methyl esters. Concentrations of saturated fatty acid methyl e…
Holzman South: A Late Pleistocene Archaeological Site along Shaw Creek, Tanana Valley, Interior Alaska
This report introduces the newly discovered Holzman South site with Pleistocene-aged components dated prior to the appearance of Clovis in North America. The site contains evidence for mammoth–human interaction, hearth activity areas, marrow extraction, and localized stone utilization in the middle Tanana Valley of Alaska, the northern gateway of the interior Canadian Ice Free Corridor
Mammoth Ivory Rods in Eastern Beringia: Earliest in North America
The Holzman archaeological site, located along Shaw Creek in interior Alaska, contained two mammoth ivory rods, of which one is bi-beveled, within a stratigraphically sealed cultural context. Dated 13,600-13,300 cal BP, these are the earliest known examples of osseous rod technology in the Americas. Beveled ivory, antler, and bone rods and points share technological similarities between Upper Paleolithic Europe, Asia, eastern Beringia, and the Cl…
The micromorphology of loess‐paleosol sequences in central Alaska: A new perspective on soil formation and landscape evolution since the Late Glacial period (c. 16,000 cal yr BP to present)
The middle Tanana Valley of central Alaska contains a well‐preserved record of human occupation and paleoenvironmental change since the Late Glacial period (c. 16,000 cal yr BP) and is a critical region for understanding human dispersal into the Americas. Micromorphology analysis of soils and sediments from six archaeological sites yields valuable information about soil formation processes and landscape evolution during the Late Glacial and into …
Gc/MS Analysis of Fatty Acids From Ancient Hearth Residues at the Swan Point Archaeological Site
Gas chromatography – mass spectrometry (GC/MS) is used to analyse soil residues from hearth sites in Swan Point, Alaska. An experimental hearth is also prepared by burning animal bones to study the characteristics of bone fires and the lipid residues that they leave embedded in soil. Hearth soil samples are derivatized with HCl in methanol to convert bound and unbound fatty acids into methyl esters. Concentrations of saturated fatty acid methyl e…
The Swan Point Site, Alaska: The Chronology of a Multi-Component Archaeological Site in Eastern Beringia
The Swan Point site in interior Alaska contains a significant multi-component archaeological record dating back to 14,200 cal BP. The site’s radiocarbon ( 14 C) chronology has been presented in scattered publications that mostly focus on specific archaeological periods in Alaska, in particular its terminal Pleistocene components associated with the East Beringian tradition. This paper synthesizes the site’s 14 C data and provides sequential Bayes…
Archaeological Recovery of Late Pleistocene Hair and Environmental DNA from Interior Alaska
Ancient hair and remnant plant DNA are important environmental proxies that preserve for millennia in specific archaeological contexts. However, recovery has been rare from late Pleistocene sites and more may be found if deliberately sought. Once discovered, singular hair fragments are not easily identified to taxa through comparative analyses and environmental DNA (eDNA) extraction can be difficult depending on preservation or contamination. In …
Gc/MS Analysis of Fatty Acids From Ancient Hearth Residues at the Swan Point Archaeological Site
Gas chromatography – mass spectrometry (GC/MS) is used to analyse soil residues from hearth sites in Swan Point, Alaska. An experimental hearth is also prepared by burning animal bones to study the characteristics of bone fires and the lipid residues that they leave embedded in soil. Hearth soil samples are derivatized with HCl in methanol to convert bound and unbound fatty acids into methyl esters. Concentrations of saturated fatty acid methyl e…
Holzman South: A Late Pleistocene Archaeological Site along Shaw Creek, Tanana Valley, Interior Alaska
This report introduces the newly discovered Holzman South site with Pleistocene-aged components dated prior to the appearance of Clovis in North America. The site contains evidence for mammoth–human interaction, hearth activity areas, marrow extraction, and localized stone utilization in the middle Tanana Valley of Alaska, the northern gateway of the interior Canadian Ice Free Corridor
The micromorphology of loess‐paleosol sequences in central Alaska: A new perspective on soil formation and landscape evolution since the Late Glacial period (c. 16,000 cal yr BP to present)
The middle Tanana Valley of central Alaska contains a well‐preserved record of human occupation and paleoenvironmental change since the Late Glacial period (c. 16,000 cal yr BP) and is a critical region for understanding human dispersal into the Americas. Micromorphology analysis of soils and sediments from six archaeological sites yields valuable information about soil formation processes and landscape evolution during the Late Glacial and into …
Archaeological Recovery of Late Pleistocene Hair and Environmental DNA from Interior Alaska
Ancient hair and remnant plant DNA are important environmental proxies that preserve for millennia in specific archaeological contexts. However, recovery has been rare from late Pleistocene sites and more may be found if deliberately sought. Once discovered, singular hair fragments are not easily identified to taxa through comparative analyses and environmental DNA (eDNA) extraction can be difficult depending on preservation or contamination. In …
Mammoth Ivory Rods in Eastern Beringia: Earliest in North America
The Holzman archaeological site, located along Shaw Creek in interior Alaska, contained two mammoth ivory rods, of which one is bi-beveled, within a stratigraphically sealed cultural context. Dated 13,600-13,300 cal BP, these are the earliest known examples of osseous rod technology in the Americas. Beveled ivory, antler, and bone rods and points share technological similarities between Upper Paleolithic Europe, Asia, eastern Beringia, and the Cl…
The Swan Point Site, Alaska: The Chronology of a Multi-Component Archaeological Site in Eastern Beringia
The Swan Point site in interior Alaska contains a significant multi-component archaeological record dating back to 14,200 cal BP. The site’s radiocarbon ( 14 C) chronology has been presented in scattered publications that mostly focus on specific archaeological periods in Alaska, in particular its terminal Pleistocene components associated with the East Beringian tradition. This paper synthesizes the site’s 14 C data and provides sequential Bayes…
Stone and mammoth ivory tool production, circulation, and human dispersals in the middle Tanana Valley, Alaska: Implications for the Pleistocene peopling of the Americas
In the middle Tanana Valley of central Alaska, the Holzman archaeological site is located along Shaw Creek's west bank. For the last three decades, the Tanana Valley has been the focus of intense Late Pleistocene archaeological and geological investigations into the interaction between the First Alaskans and Ice Age megafauna, particularly woolly mammoth. Archaeological excavations at the Holzman site have uncovered expedient tools on local quart…
Geography (6 works) · Archaeology (5 works) · Archaeology and ancient environmental studies (5 works) · Geology (5 works) · Pleistocene (5 works) · Pleistocene-Era Hominins and Archaeology (5 works) · Indigenous Studies and Ecology (3 works) · Mammoth (3 works) · Paleontology (3 works) · Beringia (2 works)