Sediment (Material Keyword)
51-75 (496 Records)
Detrital charcoal/wood and bulk soil samples from flood deposits along the Bill Williams River of western Arizona were floated to recover organic fragments suitable for radiocarbon dating. The sampling location is immediately downstream from Alamo Dam. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
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 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 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 FROM PALEOSEISMIC TRENCHES ACROSS THE SAN ANDREAS FAULT NEAR SAN FRANCISCO, CALIFORNIA (2012)
A total of ten bulk soil samples from paleoseismic trenches near San Francisco, California, were floated to recover organic fragments suitable for radiocarbon dating. Samples were collected from trenches across the San Andreas Fault at Crystal Springs South (11CSS). Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Eight radiocarbon dates were obtained.
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 SAMPLES FOR POTENTIAL RADIOCARBON DATABLE MATERIAL FROM THE ELIZABETH LAKE PALEOSEISMIC SITE, CALIFORNIA (2014)
The Elizabeth Lake site is located in the town of Elizabeth Lake, 18 miles northwest of Palmdale, California. Nine soil samples, collected from two paleoseismic trenches opened across the San Andreas Fault, were submitted to recover and identify material appropriate for AMS radiocarbon age determination. In addition, microcharcoal extraction was requested for three samples.
EXAMINATION OF BULK SOIL SAMPLES FOR POTENTIAL RADIOCARBON DATABLE MATERIAL FROM THE FRAZIER MOUNTAIN PALEOSEISMIC SITE, LOS ANGELES COUNTY, CALIFORNIA (2015)
The Frazier Mountain Paleoseismic Site is situated along the San Andreas Fault near Gorman, California. Two samples, collected from an alluvial fan on the northern slope of Frazier Mountain (Kate Scharer, personal communication June 17, 2015) were submitted for macrofloral analysis to recover and identify charred botanic remains and charcoal suitable for AMS radiocarbon age determination.
EXAMINATION OF BULK SOIL, IDENTIFICATION OF DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM EL VADO DAM PALEOFLOOD STUDY RIO CHAMA, NEW MEXICO (2012)
Twelve bulk soil samples and twenty-eight detrital charcoal samples were examined to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from stream deposits along the Rio Chama River in the Rio Grande Basin near El Vado Dam and Reservoir, New Mexico. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of nine radiocarbon dates were obtain on charcoal from these samples.
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, PEAT, AND DETRITAL CHARCOAL FROM THE PILGRIM CREEK AREA OF GRAND TETON NATIONAL PARK, WYOMING (1997)
Bulk soil, peat, and detrital charcoal were recovered from natural exposures and soil pits on stream terraces adjacent to Pilgrim Creek in the same general site in Grand Teton National Park, Wyoming. Botanic components and detrital charcoal will be identified, and potentially radiocarbon datable material will be separated.
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 SITES ALONG THE NORTH FORK MALHEUR RIVER, AGENCY VALLEY, OREGON (2015)
Located below the Beulah Reservoir along the North Fork Malheur River, Agency Valley, Oregon, sites NFM1, NFM2, NFM3, and NFM4 represent pits excavated in gravely and fine-grained Holocene terraces (Tessa Harden, personal communication March, 2015). Excavations produced eight bulk soil and eight detrital charcoal samples for identification of charred floral remains suitable for AMS radiocarbon age determination (Tessa Harden, personal communication March, 2015). In addition, one bulk sample...
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM SITES ALONG THE WHITE RIVER ON THE WHITE MOUNTAIN APACHE RESERVATION, EAST-CENTRAL ARIZONA (2012)
One bulk soil sample and thirty-seven detrital charcoal samples were examined for the presence of organic material suitable for radiocarbon age determination. These samples were recovered from several Holocene terraces along the White River on the White River Apache Reservation, near the town of Pinetop in east-central Arizona. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. A total of nine radiocarbon dates were obtained from...
EXAMINATION OF BULK SOIL/DETRITAL CHARCOAL AND AMS RADIOCARBON AGE DETERMINATION OF MATERIAL FROM SITES TRCR1, TRCR2, TRCR4, TRCR5, AND TRCR6 ALONG TAYLOR RIVER, COLORADO (2014)
Six bulk soil samples and seventeen detrital charcoal samples from sites TRCR1, TRCR2, TRCR4, TRCR5, and TRCR6 along Taylor River in Gunnison County, central Colorado, were analyzed to recover organic remains suitable for radiocarbon age determination. Samples were collected from Holocene terraces at a reach downstream of Taylor Park Reservoir. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Five radiocarbon dates were...
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 FROM LAHONTAN DAM, NEVADA (2015)
Six bulk soil samples and nine detrital charcoal samples from site locations CR4, CR5, CR6, and CR7 along the Carson River, in the lower Carson River Basin, Nevada were analyzed to recover organic fragments suitable for radiocarbon age determination. These samples were recovered from stream deposits near the Lahontan Dam and Reservoir (Jeanne Godaire, personal communication September 1, 2015). Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material...
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 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...
EXAMINATION OF PALEOFECES, FEATURE FILL, AND AGRICULTURAL FIELDS AT RAMADITAS and LLANOS DE COLOR, CHILE (2002)
Ramaditas (G6) is one of a series of six sites located in the Quebrada de Guatacondo in northern Chile. The site is situated along a caravan route between the coastal margins and the highlands. By 900 BC, small agro-pastoral groups were occupying the richer, fertile highlands. Trade increased with coastal groups to obtain marine products. Groups regularly moved between the highland salt puna, through the dry sierra, and on to the coastal oases. Archaeological evidence suggests that Ramaditas...
EXAMINATION OF SAMPLES FROM ALONG SAND CREEK, EAST-CENTRAL ARIZONA (2011)
Three samples from along Sand Creek in east-central Arizona were examined to recover organic fragments suitable for radiocarbon dating. These samples were recovered from Holocene alluvium about two miles downstream of Cyclone Dam. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated; however, no radiocarbon dates were obtained from this material.