AMS Radiocarbon Analysis (Other Keyword)
201-225 (283 Records)
Prehistoric sites LA 183229 and LA 183231 are located northeast of Carlsbad in Eddy County, New Mexico. Burned caliche concentrations with ash and charcoal staining lacked any diagnostic materials. Soil samples collected from the stained areas at both sites were submitted for macrofloral analysis to provide information regarding paleoenvironment, plant processing, and fuel strategies of sites’ occupants. In addition suitable charred plant remains identified in these two samples were submitted...
MACROFLORAL AND AMS RADIOCARBON DATING OF HEARTH FILL; POLLEN, PHYTOLITH, AND ORGANIC RESIDUE (FTIR) ANALYSIS OF A GROUNDSTONE; AND PROTEIN RESIDUE ANALYSIS OF A BIFACE FROM SITE LA 123811 (FB 8612) ON THE FORT BLISS MILITARY INSTALLATION, NEW MEXICO (2009)
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...
MACROFLORAL AND ANTHRACOLOGICAL (CHARCOAL) ANALYSIS, AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM SITES 5LA03269, 5LA03300, AND 5LA05699, LAS ANIMAS COUNTY, COLORADO (2017)
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.
MACROFLORAL IDENTIFICATION, MICROCHARCOAL EXTRACTION, AND AMS RADIOCARBON AGE DETERMINATION OF BULK SEDIMENT SAMPLES FROM THE 45TH AVENUE PROJECT, LOS ANGELES, CALIFORNIA (2016)
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...
MACROFLORAL, AMS RADIOCARBON DATING, AND ORGANIC RESIDUE (FTIR) ANALYSES FOR SAMPLES FROM SITES CrNV-11-14170, CrNV-11-14197, AND CrNV-11-14923 FOR THE LONG CANYON DATA RECOVERY PROJECT, NEVADA (2012)
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....
MACROFLORAL, PHYTOLITH, AND ORGANIC RESIDUE (FTIR) ANALYSES AND AMS RADIOCARBON DATING OF SAMPLES FROM SITE LA 17126 AT THE TURNER B SOUTH TANK BATTERY, EDDY COUNTY, NEW MEXICO (2011)
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...
MACROFLORAL, PHYTOLITH, AND PET ANALYSES AND AMS RADIOCARBON DATING FOR SITES 32OL531 AND 32OL541, NORTH DAKOTA (2010)
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...
MACROFLORAL, PROTEIN RESIDUE (CIEP), AND ELEMENTAL COMPOSITION (XRF) ANALYSIS AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM SITE 5LA12616 (OWENS CACHE), LAS ANIMAS COUNTY, COLORADO (2018)
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...
MACROFLORAL, PROTEIN RESIDUE (CIEP), AND ORGANIC RESIDUE (FTIR) ANALYSES AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM SITE 24DW0560, DAWSON COUNTY MONTANA (2019)
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...
MACROFLORAL, PROTEIN RESIDUE, AND ORGANIC RESIDUE (FTIR) ANALYSES AND AMS RADIOCARBON DATING FOR SITE 45FS2075, WASHINGTON (2010)
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...
Mesoamerican Radiocarbon Database (MesoRad)
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...
MICROSCOPIC ANALYSIS AND AMS DATING OF A STEATITE SHERD, IDDINS SITE, TENNESSEE (2006)
A fragment of a steatite bowl was submitted for pollen, starch, and phytolith analysis, as well as for AMS radiocarbon dating. Establishing a date for this residue and vessel is critical to understanding the context of its use.
ORGANIC RECOVERY AND AMS DATES FOR THE WASHINGTON FAULT, PHASE III CORRIDOR PROJECT, SOUTHERN UTAH (2009)
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.
ORGANIC RESIDUE (FTIR) ANALYSIS AND AMS RADIOCARBON DATING OF SAMPLES FROM SITES 25FT54, 25FT56, 25FT354, AND 25RW1, RED WILLOW CREEK VALLEY, NEBRASKA (2011)
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...
ORGANIC RESIDUE (FTIR) ANALYSIS, BONE COLLAGEN EXTRACTION, AND AMS RADIOCARBON AGE DETERMINATION ON SAMPLES FROM SITES 21HE99, 21FE76, 21BL26, AND 21ML12, MINNESOTA (2019)
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...
ORGANIC RESIDUE (FTIR) ANALYSIS, MACROFLORAL ANALYSIS, CHARCOAL IDENTIFICATION, AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM SITES 48YE304 AND 48YE380, TETON COUNTY, WYOMING (2016)
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.
ORGANIC RESIDUE ANALYSIS (FTIR), CHARCOAL IDENTIFICATION, AND AMS RADIOCARBON DATING OF SAMPLES FROM THE ALM SHELTER, 48BH3457, WYOMING (2010)
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.
PHYTOLITH ANALYSIS OF JEFFERSON-ERA SEDIMENT FROM THE ORNAMENTAL LANDSCAPE AND CHARCOAL IDENTIFICATION AND AMS RADIOCARBON DATING OF A PREHISTORIC FEATURE AT POPLAR FOREST PLANTATION, BEDFORD COUNTY, VIRGINIA (2012)
Ten phytolith samples were examined from a Jefferson-era layer in an area believed to be associated with a clump of ornamental trees and bushes planted in 1812 at the northeast corner of the octagonal house located at Poplar Forest plantation in Forest, Virginia. An oval flower bed planted with dwarf roses was established nearby. Four additional phytolith samples were taken from features directly associated with the ornamental tree clump and flower bed. For this study, phytolith analysis was...
PHYTOLITH MORPHOMETRIC ANALYSIS AND AMS RADIOCARBON AGE DETERMINATION OF A ZEA MAYS COB FROM SITE 42DA2026, DAGGETT COUNTY, UTAH (2017)
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.
PHYTOLITH, MACROFLORAL, AND PROTEIN RESIDUE ANALYSES, AND AMS RADIOCARBON DATING AT SITES 32ML0890, 32ML1062, 32ML1065, 32ML1067, 32ML1071, 32ML1073, AND 32ML1079, NORTH DAKOTA (2010)
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...
PHYTOLITH, MACROFLORAL, PROTEIN RESIDUE, AND AMS RADIOCARBON DATING AT SITES 32OL551 AND 32OL552, NORTH DAKOTA (2011)
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...
PHYTOLITH, STARCH, AND ORGANIC RESIDUE (FTIR) ANALYSIS AND AMS RADIOCARBON DATING OF FOOD RESIDUE ON VESSEL FRAGMENTS FROM 10TF2130 (2013)
A nearly complete Shoshone Intermountain Ware flat-bottomed jar from site 10TF2130, located in the Auger Falls locality along the Snake River in Twin Falls, Idaho, was inverted on a large Bonneville Flood boulder supported by two natural rock spalls and a large percussion flake. A polished stone was noted downhill from the vessel beneath a boulder. Four small interior pottery sherd fragments exfoliated from this vessel were submitted for AMS radiocarbon dating and phytolith, starch, and organic...
PHYTOLITH, STARCH, AND PROTEIN ANALYSIS OF SAMPLES AND AMS RADIOCARBON ANALYSIS OF ZEA MAYS FROM PTC NE EXTENSION ROW, SITE 36BU0445, BUCKS COUNTY, PENNSYLVANIA (2020)
The Unami Creek Open Site, 36BU0445, is situated along Unami Creek in Bucks County, southeastern Pennsylvania. Originally, the site was thought to exhibit evidence of Late Archaic to Early Woodland (3700–2600 BP), Middle Woodland (2000–1700 BP), and Late woodland (1300–465 BP) occupation. Over 5,000 lithic artifacts were recovered, including Fox Creek and Late Woodland triangular projectile points. In addition, a late Woodland radiocarbon date (510–400 BP) was obtained. Fifteen flaked lithics...
PHYTOLITH, STARCH, MACROFLORAL, AND ORGANIC RESIDUE (FTIR) ANALYSES, AND AMS RADIOCARBON DATING AT THE LAKE SHETEK PARK CAMPGROUND SITE 3, 21MU54, MINNESOTA (2012)
The Lake Shetek Campground Site 3 (21MU54) in Lake Shetek State Park, southwest Minnesota is a multicomponent Plains Village, Woodland, and Archaic site. A single feature from this site was the object of intensive study to place this feature in time and identify its function. A piece of fire-cracked rock from the fill of a fire-cracked rock feature was examined for phytoliths, starches, and organic residues, the latter using Fourier Transform Infrared Spectroscopy (FTIR), to determine plant...
PHYTOLITH, STARCH, ORGANIC RESIDUE (FTIR) ANALYSIS, AND AMS RADIOCARBON DATING OF CHARRED RESIDUE FROM A CERAMIC SHERD, AND AMS RADIOCARBON DATING OF BONE FROM THE NE’HU-LAT-POE VILLAGE, SITE 10IH3337, IDAHO (2010)
A ceramic rim sherd and two bone fragments from the Ne’hu-lat-poe Village, site 10IH3337, in the Nez Perce National Forest in Idaho County, Idaho, were submitted for AMS radiocarbon dating. This multicomponent site is one of five ancient Nez Perce villages found in the area. Phytolith, starch, and organic residue analyses also were performed on the ceramic rim sherd. The sherd was tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR). Phytolith, starch, and organic...