Data Recovery / Excavation (Investigation Type)
These investigations include substantial field investigation of an archaeological site (or sites) involving the removal, and systematic recording of, archaeological matrix. These activities often mitigate the adverse effects of a public undertaking. This includes the description, analysis, and specialized studies of artifacts and samples recovered during excavations.
951-975 (27,308 Records)
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.
AMS RADIOCARBON AGE DETERMINATION OF BONE COLLAGEN FROM MONTE VERDE I, CHILE (2015)
Monte Verde I, located in south-central Chile, has produced radiocarbon dates indicating pre-Clovis occupation. Dates concurrent with occupational surface artifacts and features at MVII, including lithic, non-lithic artifacts, architectural remains, and spatial patterning, indicate site occupation approximately 14,600 to 14,200 years Cal BP (Dillehay, et al. 2008:784). Excavations at MV-I have produced dates ranging from 16,000 ± 60 to 9320 ± 40 BP. Noncultural levels have been dated between...
AMS RADIOCARBON AGE DETERMINATION OF CHARCOAL SAMPLES FROM THE CORCKRAN SITE (18QU1047), QUEEN ANNE’S COUNTY, MARYLAND (2017)
Five samples of charcoal recovered from the Corckran Site (18QU1047) in Queen Anne’s County, Maryland were submitted for identification and radiocarbon dating.
AMS RADIOCARBON ANALYSIS OF CHARCOAL FROM THE JEFFREY SITE-AREA B, BREWSTER COUNTY, TEXAS (2010)
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...
AMS RADIOCARBON DATE RESULTS ON BISON BONE FROM AYER POND, ORCAS ISLAND, WASHINGTON (2012)
Two Bison antiquus bones, one small (female) and one large (male) metacarpal, from Deer Harbor, Orcas Island, Washington were submitted for radiocarbon dating. Both of these bones were permineralized and did not retain sufficient collagen for recovery and AMS radiocarbon dating. Therefore, a calf skull fragment (OP2B) recovered from a peat deposit at Ayer Pond was submitted (Table 1).
AMS RADIOCARBON DATES FOR PEAT RECOVERED IN BOLIVIA (2010)
Ten peat samples recovered from high elevation bogs in Bolivia were submitted for AMS radiocarbon dating.
AMS RADIOCARBON DATES FOR SHANNON LAKE, ST. LOUIS COUNTY, MINNESOTA (2007)
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 DATES ON PAPER FROM A MANUSCRIPT (2012)
Fragments from two different pages from the middle and end of the scroll of an ancient manuscript were submitted for AMS radiocarbon dating to establish a date by which the paper was made, and therefore, the earliest date possible for this manuscript.
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.
AMS RADIOCARBON DATING FOR PEAT SAMPLES FROM BOLIVIA (2010)
A total of fifteen peat samples from multiple sites near La Paz, Bolivia were submitted for AMS radiocarbon dating. Samples were collected from the Charquini (Glacier Charquini) site, as well as Escalerani 2 and Escalerani 1, HP 2 and HP 1, Punto 2 and Punto 1, Rio La Paz (La Paz River), TC 1, and Tuni-condoriri.
AMS RADIOCARBON DATING FOR SAMPLES MELTING OUT FROM THE MARGIN OF A GLACIER IN PERU (2010)
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.
AMS RADIOCARBON DATING FOR SITES 24PH2977 AND 24PH2973, MONTANA (2007)
Four charcoal samples were submitted from sites 24PH2977 and 24PH2973 near Ft. Peck Lake, Montana. These sites represent Avonlea cultural material scatters. Charcoal samples were identified and processed for AMS radiocarbon analysis.
AMS RADIOCARBON DATING OF A BISON PRE-MOLAR FROM SITE 24CH395, SQUARE BUTTE, MONTANA (2010)
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.
AMS RADIOCARBON DATING OF A CANVAS SAMPLE FROM A PORTRAIT OF ST. HAROLD, ITALY/SWITZERLAND (2011)
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.
AMS RADIOCARBON DATING OF A DRILLED BONE FROM THE HAGEN SITE, 24DW2, MONTANA (2011)
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.
AMS RADIOCARBON DATING OF A PAPER SAMPLE FROM AN ANTIQUE QURAN (2011)
A paper sample from an antique Quran was submitted for AMS radiocarbon dating. The book was expected to be less than 1,000 years old (Mansur Sajady, personal communication, January 12th, 2011). A radiocarbon date for this Quran will help validate its age for the purpose of appraising its value.
AMS RADIOCARBON DATING OF A PAPYRUS FRAGMENT FROM EGYPT (2014)
Papyrus fragments from an artifactual document from Egypt were submitted for AMS radiocarbon dating. The age of the papyrus is expected to fall between 1,000 to 3,000 years ago. Ancient and modern modifications impacting the artifact prior to its time at the museum include insect holes and exposure to human skin oils due to handling. Dates from the sample will provide information on the time period when the document was produced.
AMS RADIOCARBON DATING OF AN ISOLATED HEARTH FROM TERLINGUA CREEK, BREWSTER COUNTY, TEXAS (2009)
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 FRAGMENTS FROM THE SONGBIRD RING SITE (24BH1126), BIG HORN COUNTY, MONTANA (2014)
The Songbird Ring site (24BH1126) is a stone ring camp located in a proposed mine permit area of Absaloka Mine in Big Horn County, Montana. The site was first recorded in 1975, when two stone rings, two bifacial lithic tools and three unifacial lithic tools and fragments were noted. Further investigations of the site in 2002 and 2005 identified additional stone rings along with lithic flakes and tools. Test excavations of a rock platform surface hearth (Feature B4-F2) revealed fire-cracked rock,...