Macrofloral Analysis (Other Keyword)
26-50 (528 Records)
A total of three bulk soil samples were collected from colluvium in Trench 5 at the Los Angeles Reservoir Ultra Violet Treatment Facility in southern California. These samples were examined for the presence of charred organic material suitable for AMS radiocarbon dating. In the absence of larger-sized charred remains, two of the samples were extracted to recover microscopic charcoal for dating. Two AMS radiocarbon dates were obtained for microscopic charcoal extracted from these sediments.
EXAMINATION OF BULK SEDIMENT, WOOD IDENTIFICATION, AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM ALONG THE SKOKOMISH RIVER, WASHINGTON (2006)
A total of 26 sediment samples and 2 peat samples from along the Skokomish River in western Washington were water-screened to recover organic fragments suitable for radiocarbon analysis. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Charcoallbark fragments from eight of the samples and the two peat samples were submitted for AMS radiocarbon analysis. In addition, a wood section from a stump buried in a stream was...
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON AGE DETERMINATION OF A SAMPLE FROM THE FEFFER HOLLOWAY PROJECT, WEST HOLLYWOOD, CALIFORNIA (2014)
The Feffer Holloway project site (Holloway BA-4) is located in West Hollywood, southern California. One soil sample, collected with a bucket auger (BA-4) from an alluvial fan deposit, was submitted for macrofloral analysis and subsequent AMS radiocarbon age determination. These deposits are expected to be 30,000 years old.
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM PALEOSEISMIC TRENCHES 2 AND 3 AT THE FILOLI SITE, WOODSIDE, SAN MATEO COUNTY, CALIFORNIA (2015)
The Filoli paleoseismic site is located on the San Andreas Fault in Woodside, San Mateo County, California. Bulk soil samples collected from the north wall of Trench 2 and from the south and north walls of Trench 3 were submitted for macrofloral analysis to recover charred remains suitable for AMS radiocarbon age determination. One to four different charred remains from every sample were selected, yielding a total of 30 AMS radiocarbon dates.
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM THE COLUMBIA RIVER, WASHINGTON (2015)
Sites CR1, CR2, and CR3 comprise Holocene terraces located immediately below the Grand Coulee Dam along the Columbia River, Ferry County, Washington. Two bulk soil samples from each site were submitted for macrofloral analysis. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Additionally, three samples underwent microscopic charcoal recovery due to insufficient macroscopic charcoal. Two microscopic charcoal samples were...
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM EAST CANYON TRENCH, UTAH (2006)
A total of eight bulk soil samples from the East Canyon Trench in Summit County, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from trenches along the East Canyon fault, a northeast-trending range-front fault generally bounding the northern side of the intermontane valley between East Canyon and Croyden in the Wasatch Range (Black and Hecker 1999). Botanic components and detrital charcoal were identified, and potentially...
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON ANALYSIS OF MATERIAL FROM EAST CANYON TRENCH, UTAH (2006)
A total of eight bulk soil samples from the East Canyon Trench in Summit County, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from tenches along the East Canyon fault, a northeast-trending range-front fault generally bounding the northern side of the intermontane valley between East Canyon and Croyden in the Wasatch Range (Black and Hecker 1999). Botanic components and detrital charcoal were identified, and potentially...
EXAMINATION OF BULK SOIL AND AMS RADIOCARBON DATING OF MATERIAL FROM PALEOSEISMIC TRENCHES ACROSS THE BULNAY FAULT, MONGOLIA, AND THE SAN ANDREAS FAULT, CALIFORNIA (2010)
A total of six bulk soil samples from paleoseismic trenches were floated to recover organic fragments suitable for radiocarbon analysis. Three samples were recovered from the Bulnay Fault in northern Mongolia and from the San Andreas Fault in northern California. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of 11 AMS radiocarbon dates were obtained.
EXAMINATION OF BULK SOIL AND CHARCOAL, AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM THE ROVNER SIMI PROJECT, SIMI VALLEY, CALIFORNIA (2014)
A selection of bulk soil samples collected from trenches and augers excavated as part of the Rovner Simi Project, Simi Valley, southern California, were floated to recover organic fragments suitable for radiocarbon age determination. In addition, two charcoal samples also were submitted for identification and microscopic charcoal was extracted from five sediment samples. Botanic components and charcoal fragments were identified, and optimal radiocarbon datable material, including microcharcoal,...
EXAMINATION OF BULK SOIL AND DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM ALONG THE LOWER KERN RIVER NEAR LAKE ISABELLA AND UPPER KERN RIVER NEAR CAMP NELSON, CALIFORNIA (2012)
A total of 29 samples from six sites along the lower Kern River near Lake Isabella, California, and six samples from two sites along the upper Kern River near Camp Nelson, California, were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from either fine-grained, sandy flood deposits or from weathering profiles developed in granitic grus on strath terraces cut into the bedrock in seven soil pits and a natural exposure. Botanic...
EXAMINATION OF BULK SOIL AND DETRITAL CHARCOAL FOR RADIOCARBON DATABLE MATERIAL AND EXTRACTION OF MICROCHARCOAL FROM THE PENROSE DRIVE TRENCH SITE, EAST BENCH FAULT, SALT LAKE CITY, UTAH (2010)
A total of eleven bulk soil samples, three charcoal samples, and two shell samples were examined for the presence of organic material suitable for radiocarbon analysis. These samples were recovered from two trenches at the Penrose Drive site in Salt Lake City, Utah. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Dating of material from the trenches will be used to help develop detailed information on the timing and recurrence...
EXAMINATION OF BULK SOIL AND DETRITAL CHARCOAL FOR RADIOCARBON DATABLE MATERIAL FROM SITES ALONG THE ARKANSAS RIVER, COLORADO (2004)
Nine sediment samples and twelve charcoal samples from sites along the Arkansas River in southern Colorado were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from river terraces adjacent to the Arkansas River between Pueblo Reservoir near Florence, Colorado, and Adobe Park just west of Salida, Colorado, for the Pueblo Dam Paleoflood Study. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable...
EXAMINATION OF BULK SOIL AND DETRITAL CHARCOAL FOR RADIOCARBON DATABLE MATERIAL FROM THE WASATCH FAULT ZONE, LEVAN SEGMENT, NEAR SKINNER PEAKS, UTAH (2004)
A single bulk soil sample from the side of a shallow gully incised in the footwall of the Wasatch Fault, Levan segment, near Skinner Peaks, Utah, was floated to recover organic material suitable for radiocarbon analysis. Botanic components and charcoal were identified, and potentially radiocarbon datable material was separated. A single charcoal sample from this location also was submitted for identification prior to radiocarbon analysis.
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 FOR RADIOCARBON DATABLE MATERIAL FROM A MATRIX SUPPORTED DEBRIS FLOW NEAR LUNING, NEVADA (2003)
A single bulk soil sample from a massive matrix supported debris flow unit on which the current/modern soil is developing was floated to recover organic fragments suitable for radiocarbon analysis. This sample was recovered from the mouth of a canyon near Luning, Nevada. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG LITTLE PANOCHE CREEK, CALIFORNIA (2005)
A total of eight samples from along Little Panoche Creek were floated to recover organic fragments suitable for radiocarbon analysis. These samples were collected from a late Holocene terrace adjacent to Little Panoche Creek immediately upstream of Little Panoche Detention Dam, south of Los Banos, California. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG THE BIG LOST RIVER ON THE IDAHO ENGINEERING AND ENVIRONMENTAL LABORATORY (INEEL) SITE, SOUTHERN IDAHO (2002)
Bulk soil samples from paleoflood study sites on the southwest portion of the Idaho National Engineering and Environmental Laboratory (INEEL) site on the Snake River Plain in southern Idaho were floated to recover organic fragments suitable for radiocarbon analysis. Samples were collected from trench wall exposures in eolian and alluvial deposits flanking the Big Lost River. Botanic components and detrital charcoal were identified in each of the samples, and potentially radiocarbon datable...
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG THE LOWER PECOS RIVER, NEW MEXICO (2004)
A total of five bulk soil samples from along the Lower Pecos River near Carlsbad, New Mexico, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were collected as part of the paleoflood frequency analyses for Brantley and Avalon Dams. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG THE PROVO RIVER, UTAH (2003)
A single bulk soil sample from along the Provo River in Utah was floated to recover organic fragments suitable for radiocarbon analysis. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG THE SNAKE RIVER, IDAHO (2004)
Two bulk soil samples from an older Holocene river terrace along the Snake River in Idaho were floated to recover organic fragments suitable for radiocarbon analysis. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG THE SWEETWATER RIVER, WYOMING (2004)
A total of four bulk soil samples from a late Holocene river terrace along the Sweetwater River, upstream of Pathfinder Dam in central Wyoming, were floated to recover organic fragments suitable for radiocarbon analysis. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM ALONG WILLOW CREEK, IDAHO (2004)
A single bulk soil sample from along Willow Creek near Idaho Falls, Idaho, was floated to recover organic fragments suitable for radiocarbon analysis. This sample was recovered from a buried A horizon in soil pit on an early Holocene/late Pleistocene river terrace. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM FAULT TRENCH MF1, PUERTO RICO (2012)
A total of five bulk soil samples from a paleoseismic fault trench were floated to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from a mango/avocado farm on the southeast coastal plain of Puerto Rico. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE ANTON SCARP AND CHEYENNE PLAINS PIPELINE TRENCHES, COLORADO (2005)
Five bulk soil samples from the Anton Scarp and Cheyenne Plains Pipeline Trenches in eastern Colorado were submitted for particle size determination and were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from organic-rich silt representing modem or buried A soil horizons. Because these samples did not contain sufficient charred organic material for radiocarbon dating, dates were obtained on humates extracted from the soil.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE BACA LANE PIT, SITE BA-MM04-25, SOUTHERN COLORADO (2005)
Four bulk soil samples from the Baca Lane Pit site (BA-MM04-25) in Alamosa County, Colorado, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from multiple buried A soil horizons within an eolian sand dune complex. Cultural (Holocene) artifacts are associated with several of the A horizons, and a small hearth with burned bird bones was noted. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable...