AMS Radiocarbon Dating (Other Keyword)
1-25 (212 Records)
AMS RADIOCARBON AGE DETERMINATION OF BISON BONE AND POLLEN, PHYTOLITH, STARCH, AND ORGANIC RESIDUE (FTIR) ANALYSES OF A SHERD FROM THE FRED BURR #1 SITE (24GN1095), MONTANA (2013)
Two bison bone fragments were recovered from the Fred Burr #1 site (24GN1095), located on the bank of Fred Burr Creek east of Philipsburg in western Montana. These bison bone fragments were submitted for AMS radiocarbon age determination. A refit sherd also recovered from the site was submitted for pollen, phytolith, starch, and organic residue (FTIR) analyses.
AMS RADIOCARBON AGE DETERMINATION OF BISON BONE FROM THE FRED BURR #1 SITE (24GN1095), MONTANA (2011)
Two bison bone fragments were recovered from the Fred Burr #1 site (24GN1095), located on the bank of Fred Burr Creek east of Phillipsburg in western Montana. These bison bone fragments were submitted for AMS radiocarbon age determination.
The Jeffrey Site-Area B is situated on a relatively narrow alluvial terrace, just north of Big Bend National Park in Brewster County, Texas. Feature 2 consists of a pavement type hearth/shallow basin from which charcoal was collected for AMS radiocarbon dating.
AMS RADIOCARBON DATE FOR A BONE FRAGMENT FROM THE FOLSOM LAYER AT THE MACHAFFIE SITE, MONTANA (2012)
A bone fragment from the Folsom layer at the MacHaffie site (24JF4) was submitted for collagen recovery and an AMS radiocarbon date. After this analysis an additional bison bone fragment was submitted for subsequent collagen recovery and an AMS radiocarbon date. The MacHaffie site is situated on the western slopes of the Elkhorn Mountains in west-central Montana. Paleoindian sequences contained within floodplain alluvium include a Folsom deposit with an estimated age of 10,425 radiocarbon years...
Four sediment samples from Shannon Lake in St. Louis County, Minnesota were submitted to obtain AMS radiocarbon dates.
AMS RADIOCARBON DATES ON BONE SAMPLES FROM SHEEP ROCK SPRING (24JF292), JEFFERSON COUNTY, MONTANA (2013)
Sheep Rock Spring (24JF292) is a deeply stratified Middle to Early Precontact occupation site located northeast of Whitehall in Jefferson County, Montana. This stratified alluvial/colluvial locality is situated on the southeast-facing slope of Bull Mountain near Sheep Rock Spring in the Sheep Creek Valley. The spring is currently used as a water source for cattle. The existing radiocarbon chronology on bone indicates that the zone of fluctuating water table has introduced contaminants (Wilson...
AMS RADIOCARBON DATING AND ORGANIC RESIDUE (FTIR) ANALYSIS OF SAMPLES FROM SITE 14OT5-H2, OTTAWA COUNTY, KANSAS (2013)
A possible bison bone fragment was recovered from House 2 of the Minneapolis site, 14OT5, situated in Ottawa County, Kansas. An AMS radiocarbon date of 1070 ± 15 RCYBP had been obtained on ceramic residue from this site, but was not a credible age for this context. Therefore, a fragment from the long bone shaft was submitted for AMS radiocarbon dating to obtain a context date to corroborate or refute the residue date; however, no collagen was present. As a result, charred residue from a ceramic...
AMS RADIOCARBON DATING AND ORGANIC RESIDUE (FTIR) ANALYSIS OF SAMPLES FROM THE PIGG SITE (5MT4802), COLORADO (2010)
Five charred Zea mays (corn) cob fragments and one charred Phaseolus vulgaris (bean) fragment recovered from two room blocks and a kiva at the Pigg Site (5MT4802) in Montezuma County, Colorado, were submitted for identification verification and AMS radiocarbon dating. Also submitted for organic residue analysis were several painted ceramic mug fragments that were used to line a sipapu in the same kiva from which the corn and bean samples were recovered. Organic residue analysis on select sherds...
AMS RADIOCARBON DATING AND PHYTOLITH AND STARCH GRAIN ANALYSIS OF ORGANIC RESIDUE FROM A BESANT PHASE POTSHERD, MAINARD RANCH, 24LT505, MONTANA (2011)
A Besant phase potsherd with visible residue from site 24LT505 was submitted for AMS radiocarbon dating and phytolith and starch grain analysis. Radiocarbon dating the charred residue provides information on when the vessel represented by this sherd was primarily in use. Phytolith and starch grain analysis provides information on some of the foods prepared or stored within the vessel.
Three vegetation samples recovered during 2009 and 2010 field work in Peru were submitted for radiocarbon dating. The samples included two unidentified hardwood shrub twigs and a clump of grass associated with the margin of a receding glacier.
A bison pre-molar recovered from site 24CH395 near Square Butte in Chouteau County, Montana, was submitted for AMS radiocarbon dating. A single root from the pre-molar was dated, leaving the tooth enamel available for other possible analyses.
A portion of canvas containing a portrait of St. Harold was submitted for an AMS radiocarbon date. The painting is thought to have originated in either Switzerland or Italy.
AMS RADIOCARBON DATING OF A CHARCOAL SAMPLE FROM A SHELL MIDDEN AT SITE DcRu-63, VANCOUVER ISLAND, BRITISH COLUMBIA, CANADA (2013)
Charcoal recovered from an intact midden deposit at site DcRu-63 on southern Vancouver Island, British Columbia, was submitted for identification and AMS radiocarbon dating. Site DcRu-63 is a large shell midden occupation site. AMS radiocarbon dating was undertaken because the age of the site is currently unknown.
A drilled rib bone was submitted for radiocarbon dating. The bone, which has been curated for many years, had several severe cracks and had been shellacked. Treatment prior to radiocarbon dating included removing the shellac, then recovering collagen.
Charcoal that was hand picked from a hearth along Terlingua Creek was submitted for identification and AMS radiocarbon dating.
AMS RADIOCARBON DATING OF BONE AND CHARCOAL FROM THE MACHAFFIE SITE (24JF4), WEST-CENTRAL, MONTANA (2009)
Bone and carbon-enriched sediments from the MacHaffie Site (24JF4) in west-central Montana were submitted for AMS radiocarbon dating.
AMS RADIOCARBON DATING OF BONE FROM SITE 25FT376, HUGH BUTLER LAKE (RED WILLOW LAKE), FRONTIER COUNTY, NEBRASKA (2012)
Two pieces of bone from site 25FT376 were submitted for AMS radiocarbon dating. This site reflects a remnant of a Holocene terrace on an island in Hugh Butler Lake (Red Willow Lake) in Frontier County, Nebraska. This island is usually under water in the reservoir, but has been exposed during draw-down of the reservoir for repairs to Red Willow Dam. The island surface contains a scatter of bison bone, chipped stone tools, and lithic debitage. Site 25FT376 is believed to reflect an Early Archaic,...
Two bone fragments recovered from 26EK9840, a site exhibiting evidence of Archaic occupation, were submitted for radiocarbon dating. These bone fragments represent Levels 20-30 cm and 40-50 cm.
AMS RADIOCARBON DATING OF BONE FROM SITE CA-SDI-1313/14791 ON THE MARINE CORPS BASE CAMP PENDLETON, CALIFORNIA (2012)
Three bone fragments from Site CA-SDI-1313/14791 were submitted for AMS radiocarbon dating. This site is located on Marine Corps Base Camp Pendleton in northern San Diego County, southern California. These bone fragments are expected to date between 6800-3000 BP. Sufficient collagen was recovered from only one of the bone fragments; therefore, an additional three bone samples were submitted. A total of four dates were obtained.
A single bone fragment from Spokane Creek, Montana was submitted for AMS radiocarbon dating.
AMS RADIOCARBON DATING OF BONE SAMPLES FROM SITES HdSd-70 AND HdSd-370, BRITISH COLUMBIA, CANADA (2013)
Bone fragments collected from sites HdSd-70 and HdSd-370 were recovered during the Williston Reservoir Archaeology Project - 1301, British Columbia, Canada. Sites HdSd-70 and HdSd-370 are in close proximity to one another along an old river channel in the semi-eroded reservoir drawdown zone. The bone at these sites consisted of isolated and restricted surface and subsurface scatters at the edge of the channel. Dates from these samples are expected to fall in the mid- to late-Holocene.
AMS RADIOCARBON DATING OF CHARCOAL AND BONE FROM THE WAHKPA CHU’GN BISON KILL SITE (24HL0101), MONTANA (2011)
Three bison bone samples and two pieces of charcoal were submitted from the Wahkpa Chu’gn bison kill site (24HL0101) in north-central Montana. One bone sample was recovered from a large fire-cracked rock feature found in Area E. Two charcoal samples and two bison bone samples were recovered from Display House #5, the westernmost display area, in Area D. The earliest occupation appears to have been the Besant Complex around 2000-1500 BP. There was a short occupation by the Avonlea Complex,...
A human fibula fragment from Feature F1a at Rough Cut Rockshelter (41BS1507) was submitted for AMS radiocarbon dating. Collagen extraction methods and results are discussed in the following sections.
A single, incompletely burned human left femur from the Jeffrey Crevice burial was submitted for radiocarbon dating. Processing methods and results are discussed in the following sections.
AMS RADIOCARBON DATING OF SAMPLES FROM SITES 21-BK-99, 21-OT-152, 21-CA-188, AND 21-HB-26, MINNESOTA (2011)
Charred organic residue from four ceramic sherds from multiple sites in Minnesota were submitted for AMS radiocarbon dating.