AMS Radiocarbon Dating (Other Keyword)

DOCUMENT Full-Text Linda Scott Cummings.

Site LA 2894, a prehistoric, structural site, comprises numerous fire-cracked rock (FCR) features and a large artifact assemblage. This temporary Jornada Mogollon, Early to Late Pueblo (A.D. 900–1200) campsite contains evidence of activities focused on tool manufacture and resource processing. Two sediment samples, collected from levels 2 and 3 of Feature 1, an FCR assemblage, were submitted for macrofloral and AMS radiocarbon analyses.

DOCUMENT Full-Text Kathryn Puseman. Linda Scott Cummings. Chad Yost. Melissa K. Logan.

Fill from a hearth at site LA 123811 (FB 8612) on the Fort Bliss Military Installation in Otero County, New Mexico, was floated to recover charred macrofloral remains, then obtain a radiocarbon date on identified charcoal. A groundstone recovered from the hearth fill was examined for pollen, phytoliths, and organic residues, the latter using Fourier Transform Infrared Spectroscopy (FTIR). Ethnobotanic analyses of the hearth fill and the groundstone wash will be used to provide subsistence...

DOCUMENT Full-Text Peter Kováčik. Linda Scott Cummings.

Sites 5LA03269, 5LA03300, and 5LA05699 are situated in the Big Arroyo Hills within the Piñon Canyon Maneuver Site (PCMS), Las Animas County, Colorado (Wayne Thomas, personal communication October 6, 2017). Four features encountered at these sites were sampled for macrofloral and anthracological (charcoal) analysis to recover and identify charred floral remains and charcoal suitable for AMS radiocarbon age determination. Four radiocarbon dates were requested to ascertain period of use.

DOCUMENT Full-Text Peter Kováčik. Linda Scott Cummings.

The 45th Avenue project site (Avenue 45th) is located on the southwest corner of Lincoln Avenue and Avenue 45 in Los Angeles, California. Four soil samples, collected from a boring and a trench in lacustrine deposits, were submitted for macrofloral analysis to recover and identify charred floral remains suitable for AMS radiocarbon age determination. Three samples from B-4 with expected dates between 15,000 and 6,000 years BP (John Helms, personal communication June 15, 2015) and one sample from...

DOCUMENT Full-Text Kathryn Puseman. Melissa K. Logan.

Hearth/fire pit fill samples from sites CrNV-11-14170, CrNV-11-14197, and CrNV-11-14923 in Elko County, Nevada, were floated to recover charred macrofloral remains. Firecracked rock recovered from the macrofloral samples were tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR). Charcoal or charred botanic material from each of the three macrofloral samples was submitted for AMS radiocarbon dating to provide temporal information about use of these features....

DOCUMENT Full-Text Melissa K. Logan. Chad Yost. Kathryn Puseman. Linda Scott Cummings.

Ten samples from site LA 171726 at the Turner B South Tank Battery in Eddy County, New Mexico, were submitted for macrofloral, phytolith, and organic residue analyses. Seven samples were collected from features in an area of the site contaminated with chlorides and some oil. The remaining samples consisted of fill from two small, basin-shaped thermal features believed to represent hearths in an area of the site not affected by the spill. The results of analyses from samples not affected by the...

DOCUMENT Full-Text Kathryn Puseman. Linda Scott Cummings. Chad Yost.

Samples were submitted for various analyses from sites 32OL531 and 32OL541 in Oliver County, North Dakota. Site 32OL531 is a prehistoric campsite consisting of 21 stone rings and one stone cairn, and site 32OL541 is a prehistoric campsite that consists of 19 stone rings and three cairns. Fill from possible hearth areas in 10 of the stone rings at these sites were floated to recover macrofloral remains, including charcoal for AMS radiocarbon dating. Sufficient charred material for dating was...

DOCUMENT Full-Text Linda Scott Cummings. Peter Kováčik. R.A. Varney. Kathryn Puseman. Jammi L. Ladwig.

The goal of the Permian Basin MOA Task Order 10 was to analyze 500 AMS radiocarbon samples collected from feature context by the Carlsbad Field Office Cultural Resource Staff (including recovering and identifying charcoal and/or burned annual remains from each of the samples prior to selecting the best item to date), as well as analyzing 500 duplicate samples collected at the same locations for environmental and subsistence related evidence using starch, phytolith, and macrobotanical analyses....

DOCUMENT Full-Text Linda Scott Cummings. Lee Drake. Peter Kováčik.

Site 5LA12616 (Owens Cache) is located within the Pinyon Canyon Maneuver Site in southeastern Colorado. The cache encountered under the bedrock niche consisted of three chipped stone tools and sparse micro-debitage. Stone tools were submitted for protein analysis (CIEP). Macrofloral and radiocarbon analysis were requested for two sediment samples collected in the vicinity of intact artifacts to recover and identify charred remains, including charcoal, that would be suitable for radiocarbon...

DOCUMENT Full-Text Linda Scott Cummings. Caitlin A. Clark. Jenna Battillo.

Site 24DW0560 is a buried lithic scatter or temporary camp located in Dawson County, Montana, approximately 10.5 km west of the town of Lindsay. Twenty-one samples were submitted for a variety of analyses to better understand resource use among prehistoric huntergatherer populations. Eight lithic samples were submitted for protein analysis. Of the seven rock and sediment samples collected from fire-cracked rock (FCR) features, three were submitted for FTIR analysis, one for macrofloral, one for...

DOCUMENT Full-Text Kathryn Puseman. Chad Yost. Melissa K. Logan.

Samples from units in three excavation blocks at site 45FS2075 in northeast Washington were examined for charcoal and other macrofloral remains. This site appears to represent pre-contact through contact period occupations. The excavation blocks contained several diffuse hearths consisting of concentrations of fire-cracked rock and bone. Charcoal or charred botanic remains from 34 samples were submitted for AMS radiocarbon dating. In addition, six lithic artifacts were sampled for protein...

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PROJECT Julie Hoggarth. Claire Ebert.

The Mesoamerican Radiocarbon (MesoRAD) database compiles published radiocarbon dates and isotopic data from archaeological sites in across Mesoamerica. Mesoamerica as a culture region is defined by shared cultural traits that span the areas of northern, central, and southern Mexico, Belize, Guatemala, Honduras, and parts of El Salvador and Nicaragua. In its final form, we hope that the database can be used as an open-access repository that will facilitate collaborative studies in the...

DOCUMENT Full-Text Linda Scott Cummings.

Eleven sediment samples from four trenches (T-1, T-2, T-4, and WFT) across the Washington Fault in Southern Utah were examined to recover particulate organics that might include microscopic charcoal and/or pollen for radiocarbon dating. Upon recovery of this material, AMS radiocarbon dating was performed.

DOCUMENT Full-Text Linda Scott Cummings. Melissa K. Logan. Kathryn Puseman.

Ceramic sherds (some with visible residue), charcoal, charred corn kernels, and a bone fragment from sites 25FT54, 25FT56, 25FT354, and 25RW1 in the Red Willow Creek Valley of southwestern Nebraska were submitted for organic residue analysis, identification, and/or AMS radiocarbon dating. The ceramics were tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR) to identify probable contents of the residues. Charcoal identification reveals the types of wood burned as...

DOCUMENT Full-Text Linda Scott Cummings. Melissa K. Logan.

Fill from two thermal features at sites SRI-3 and SRI-6 near Willits, California was submitted for organic residue analysis. Samples were tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR). FTIR analysis provides information concerning the compounds that were extracted from the fill samples. Information concerning foods that might have been processed in association with thermal features at these sites is derived from matches with our reference library of raw and...

DOCUMENT Full-Text Linda Scott Cummings.

In Minnesota, understanding ceramic periods of prehistory and their attendant subsistence practices is of critical importance. Our previous study (Scott Cummings 2017) indicates that problems with radiocarbon dates on ceramics are not unique to this period. Instead, the entire prehistoric record is affected. The natural Minnesota landscape contributes dissolved inorganic carbon (DIC) and organic carbon (DOC), confounding efforts to create a clean radiocarbon record. When graphing all dates from...

DOCUMENT Full-Text Peter Kováčik. Linda Scott Cummings.

Sites 48YE304 and 48YE380 lie in a wetland near the outlet of Yellowstone Lake and beginning of Yellowstone River in Teton County, Wyoming. One sediment, one charcoal, and one FCR sample from each site were submitted for macrofloral, charcoal, and organic residue (FTIR) analysis, respectively. In addition, one AMS radiocarbon date was requested for the charcoal sample from Site 48YE304.

DOCUMENT Full-Text Linda Scott Cummings.

Eight ceramic sherds were recovered from three archaeological sites that included Turner Farm (29.9), Eddington Bend (74-8), and Hirundo (73-9). Five sherds from Turner Farm contained sufficient charred food crust for AMS radiocarbon dating. Of these, four qualified for financial support from an NSF grant (No. 1659988) to examine use of different chemical pre-treatment on charred food crust. In addition, all eight ceramic samples were examined for their chemical signatures using Fourier...

DOCUMENT Full-Text Kathryn Puseman.

Three charcoal samples from the Alm Shelter, site 48BH3457, in Wyoming were submitted for identification and AMS radiocarbon dating. These samples are expected to range in age from less than 2000 years BP to about 8000 years BP.

DOCUMENT Full-Text Chad Yost. Kathryn Puseman.

Uncharred plant stem fragments from a shipwreck were submitted for phytolith analysis to determine if this material represents grass, sedge, or other plants that produce phytoliths/biogenic silica. The stem fragments are believed to have been used for packing cargo. A portion of the stem material was submitted for AMS radiocarbon dating to provide temporal information.

DOCUMENT Full-Text Linda Scott Cummings.

Site 42DA2026 consists of a few storage features built in a rock fall under a rock shelter above the Green River in Daggett County, Utah. An uncharred corn cob recovered from the wall near the top of Feature 2 was submitted for AMS radiocarbon age determination to ascertain the period of use. Additionally, examination of the morphometric phytolith signature and comparison with other cob signatures was requested for this cob.

DOCUMENT Full-Text Kathryn Puseman. Chad Yost.

A total of ten samples from the fill of hearths at sites 32ML0890, 32ML1065, 32ML1073, and 32ML1079 in McLean County, North Dakota, were examined for phytoliths and charred macrofloral remains to provide information concerning plant resources utilized by the various occupants of these sites. PET (Processed Edible Tissue) analysis was conducted on four pieces of charred organic material recovered from the macrofloral samples. PET analysis included examination of organic residues using Fourier...

DOCUMENT Full-Text Kathryn Puseman. Chad Yost.

Samples from stone rings at sites 32OL551 and 32OL552 in west-central North Dakota were examined for phytoliths and macrofloral remains to determine that plant resources were utilized by the occupants of these sites. Microscopic charcoal was extracted from the stone ring sediments and submitted for AMS radiocarbon dating, yielding three radiocarbon dates. Lithic tools from the stone rings at 32OL551 also were examined for protein residues to provide information concerning animals that may have...

DOCUMENT Full-Text Linda Scott Cummings. Jammi L. Ladwig. Peter Kováčik.

The Valentine Cache #3 Site (05-01-53-377), located in southwestern Los Angeles County, California, consists of five granitic stone circular features. These features are believed to be associated with caching activities, possibly acorn harvesting. Two soil samples from the center of one of the rock ring features (Feature B, Quadrant 2) were submitted for phytolith, starch, and macrofloral analyses to identify plants associated with function, type, and method of construction for these features,...