AMS Radiocarbon Dating (Other Keyword)
101-125 (313 Records)
Six bulk soil samples from paleoseismic trenches across the Minto Fault, Denali Fault, and Castle Mountain Fault in Alaska were floated to recover and identify organic fragments suitable for radiocarbon age determination. In addition one macrofloral sample and eight detrital charcoal samples from a trench across the Northern Foothills Thrust (Alaska) also were submitted for identification. Botanic components and charcoal fragments were identified and potentially radiocarbon datable material was...
EXAMINATION OF BULK SOIL AND MICROCHARCOAL EXTRACTION OF SAMPLES FROM THE JERD CREEK PALEOSEISMIC TRENCH SITE, NAPA COUNTY, CALIFORNIA (2012)
A total of six bulk soil samples were collected from a paleoseismic trench at the Jerd Creek trench site on the Berryessa section of the Green Valley Fault, California. These samples were examined for the presence of charred organic material suitable for AMS radiocarbon dating. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. In the absence of larger-sized charred remains, four of the samples were extracted to recover...
EXAMINATION OF BULK SOIL FROM PALEOSEISMIC TRENCHES ACROSS THE HAYWARD FAULT AND THE SAN ANDREAS FAULT NEAR SAN FRANCISCO, CALIFORNIA (2012)
A total of six bulk soil samples from paleoseismic trenches near San Francisco, California, were floated to recover organic fragments suitable for radiocarbon dating. Four samples were recovered from a trench across the Hayward Fault, while two samples were collected from a trench across the San Andreas Fault. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of eight AMS radiocarbon dates were obtained on charred...
EXAMINATION OF BULK SOIL SAMPLES AND MICROCHARCOAL EXTRACTION FOR POTENTIAL RADIOCARBON DATABLE MATERIALS FROM THE ZEBRA TRENCH ON THE CANYON RIVER FAULT, GRAYS HARBOR COUNTY, WASHINGTON (2017)
The Zebra trench site is situated in the Wynoochee River Valley approximately 30 miles north of Montesano in Greys Harbor County, Washington. Three bulk samples, collected from a paleoseismic trench located where the Canyon River fault cuts across a series of fluvial terraces (Scott Bennet, personal communication March 20, 2017), were submitted to recover and identify material appropriate for AMS radiocarbon age determination. Microscopic charcoal extraction also was requested for one of these...
EXAMINATION OF BULK SOIL, IDENTIFICATION OF DETRITAL CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL COLLECTED ALONG GRIZZLY CREEK, OREGON (2011)
One bulk soil sample and twelve detrital charcoal samples were examined for the presence of organic material suitable for radiocarbon age determination. These samples were recovered from Holocene alluvium along Grizzly Creek downstream of Howard Prairie Dam, near Klamath Falls in the south-central Oregon. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of five radiocarbon dates were obtained from charcoal fragments.
EXAMINATION OF BULK SOIL, IDENTIFICATION OF DETRITAL CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL COLLECTED ALONG THE MIDDLE FORK FEATHER RIVER, CALIFORNIA (2011)
One bulk soil sample and two detrital charcoal samples were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from fluvial terraces along the Middle Fork Feather River and from glacial till exposed above Jamison Creek in the Mohawk Valley, northeastern California. The botanic components and detrital charcoal were identified, and the potentially radiocarbon-datable material was separated. A total of four radiocarbon dates were obtained...
EXAMINATION OF BULK SOIL, IDENTIFICATION OF DETRITAL CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL COLLECTED ALONG WEBER RIVER AND CHALK CREEK, UTAH (2011)
Two bulk soil samples and thirty-six detrital charcoal samples were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from stream deposits along the Weber River and Chalk Creek in the Weber River Basin, near Echo Dam and Reservoir and upstream of Wanship Dam and Rockport Lake, northern Utah. The botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of twelve...
EXAMINATION OF BULK SOIL, IDENTIFICATION OF DETRITAL CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM NORTH FORK RED RIVER, OKLAHOMA (2011)
A total of nine bulk soil samples and twenty detrital charcoal samples collected along the North Fork Red River in the Red River Basin near Altus Dam and Reservoir, Oklahoma, were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from stream deposits along the North Fork Red River. The botanic components and detrital charcoal were identified, and the material that was potentially radiocarbon-datable was separated. A total of eleven...
EXAMINATION OF BULK SOIL, MICROCHARCOAL EXTRACTION, AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM THE DRUM MOUNTAINS PALEOSEISMIC TRENCH, MILLARD COUNTY, UTAH (2016)
The Drum Mountains Paleoseismic Trench lies approximately 5–10 km west of Delta in Millard County, Utah. Two bulk soil samples collected from colluvial wedge (fault) deposits in a paleoseismic trench were submitted for macrofloral analysis. Botanic components including charcoal were identified, and potentially radiocarbon datable material was separated. In addition, microscopic charcoal recovery and AMS radiocarbon age determination was requested for both samples.
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION FOR SAMPLES FROM THE SCOGGINS LANDSLIDE STUDY, OREGON (2012)
Three sediment samples and three detrital charcoal samples from a landslide study near Forest Grove, Oregon, were examined to recover organic fragments suitable for radiocarbon age determination. One additional wood sample also was submitted. These samples were recovered from a sag pond on a landslide slope and from backhoe-dug holes on or near landslide deposits. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of five...
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM HOLOCENE TERRACES NEAR ISLAND PARK, IDAHO, AND WEST YELLOWSTONE, MONTANA (2012)
Two bulk soil samples and twenty-seven detrital charcoal samples collected along the Henrys Fork River in northeast Idaho and southwest Montana were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from soil pits on Holocene terraces. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of eight samples were processed for radiocarbon age determination.
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM SITES LPC2, LPC3, LPC4 and LPC5 ALONG THE LITTLE PANOCHE RIVER IN FRESNO COUNTY, CALIFORNIA (2014)
One bulk soil and twelve detrital charcoal samples from sites LPC2, LPC3, LPC4, and LPC5 along the Little Panoche River in Fresno County, California, were floated to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from terraced bank exposures near the towns of Los Banos and Mendota, in northern San Joaquin Valley. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Six radiocarbon...
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG THE BLUE RIVER FOR THE GREEN MOUNTAIN DAM PALEOFLOOD STUDY, COLORADO (2010)
Two bulk soil samples and 61 detrital charcoal samples were examined to recover organic fragments suitable for radiocarbon analysis. These samples were collected from stream deposits along the Blue River in the Lower Blue River Basin near Green Mountain Dam and Reservoir in western Colorado. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Six radiocarbon dates were obtained.
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG THE HOKO RIVER, WASHINGTON (2010)
A single bulk soil sample and 21 detrital charcoal samples were examined to recover organic fragments suitable for radiocarbon analysis. These samples were collected from stream deposits along the Hoko River on the northern Olympic Peninsula, Washington. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of three radiocarbon dates were obtained.
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG THE UNCOMPAHGRE RIVER NEAR RIDGWAY, COLORADO (2005)
A total of nine bulk soil/detrital charcoal samples from along the Uncompahgre River near Ridgway, Colorado, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from a sequence of four to five terraces above the river. Botanic components and detrital charcoal were identified and potentially radiocarbon datable material was separated. Charred material from three of the samples were AMS radiocarbon dated, yielding conventional radiocarbon...
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM SITES IN THE STRAWBERRY RIVER BASIN, UTAH (2005)
A total of 43 samples from sites in the Strawberry River Basin of eastern Utah were examined to recover organic fragments suitable for radiocarbon analysis. These samples were collected as part of the Regional Paleoflood Approach (REGPA) during the summer of 2005. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of seven samples were AMS radiocarbon dated.
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM THE RIDGWAY TRENCHES, SOUTHERN COLORADO (2005)
A total of 20 bulk sediment samples from four trenches along a west-facing fault scarp near Ridgway, Colorado, were floated to recover organic fragments suitable for radiocarbon analysis. Three detrital charcoal samples also were examined. These samples were recovered from colluvium in the vertical trench walls. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Because many of the samples will date the same event or...
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM CACHE CREEK, CALIFORNIA (2011)
Two detrital charcoal samples from a test pit at Cache Creek in Yolo County, California, were submitted for identification and radiocarbon age determination. These samples were recovered from Test Pit LM4.2L on an alluvial fan. Two AMS radiocarbon dates were obtained.
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM THE LOST CREEK DAM PALEOFLOOD STUDY, WEBER BASIN, UTAH (2014)
Four site locations were investigated as part of the Lost Creek Dam Paleoflood Study, Weber Basin, Utah. Twenty-five detrital charcoal samples collected from sites LC3, LC4, LC5, and LC6 were submitted for recovery and identification of charred organic fragments suitable for AMS radiocarbon age determination. Subsequent to identification, seven samples were selected for AMS radiocarbon dating.
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG BULL LAKE CREEK, WYOMING (2011)
Ten samples were examined for the presence of organic material suitable for radiocarbon analysis. These samples were recovered from two Holocene terraces along Bull Lake Creek downstream of Bull Lake Dam, in west-central Wyoming. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of 3 radiocarbon dates were obtained from charcoal fragments.
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG RED WILLOW CREEK, NEBRASKA (2010)
A total of 29 samples were examined for the presence of organic material suitable for radiocarbon analysis. These samples were recovered from four natural bank exposures along Red Willow Creek downstream of Red Willow Dam in southwest Nebraska. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of 13 radiocarbon dates were obtained from charcoal and wood fragments to help establish the chronology of Holocene alluvium and...
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM PASTURE CANYON, ARIZONA (2010)
Five samples from Pasture Canyon, Arizona, were examined to recover charcoal or other organic fragments suitable for radiocarbon analysis. These samples were recovered from two soil pits excavated in the stream bank and on the hillslope at the base of an older stabilized dune. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of three charcoal samples were selected for AMS radiocarbon dating.
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON ANALYSIS OF SAMPLES FROM ALONG LITTLE STONY CREEK, EAST PARK DAM, CALIFORNIA (2010)
A total of 27 detrital charcoal samples from along Little Stony Creek downstream of East Park Dam, California, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from Holocene alluvium in two bank exposures and a soil pit. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of seven radiocarbon dates were obtained on charcoal from these samples.
EXAMINATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON DATE DETERMINATION OF SAMPLES FROM ALONG LITTLE STONY CREEK, EAST PARK DAM, CALIFORNIA (2011)
A total of 33 detrital charcoal samples from along Little Stony Creek downstream of East Park Dam, California, were floated to recover organic fragments suitable for radiocarbon dating. These samples were recovered from Holocene alluvium in three bank exposures and a soil pit. The botanic components and detrital charcoal were identified, and the potentially radiocarbon datable material was separated. A total of seven radiocarbon dates were obtained on charcoal from these samples. Of the 33...
EXAMINATION OF NESTED VESSEL CONTENTS, 42SA14237, SAN JUAN COUNTY, UTAH (2016)
A complete grayware jar with banded neck was recovered from the sidewall of a looter’s pit at 42SA14237. The jar and its undisturbed contents were mailed to PaleoResearch Institute, Inc. for study. While carefully pouring out the sand from the jar, we noted another small vessel inside the grayware banded neck vessel (Figure 1:A). We continued to pour out the sand while holding that tiny vessel in place, then retrieved it using a pair of tweezers. Beneath the tiny vessel was a mass of charred...