Macrofloral Analysis (Other Keyword)
51-75 (528 Records)
Two bulk soil samples from a horizon in the Dry Hills of Nevada, near Beowawe, 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 THE FRENCHMAN MOUNTAIN FAULT, NEVADA (2006)
Two soil samples initially were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from the Frenchman Mountain fault on the east side of Las Vegas, Nevada. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Charcoal from sample WMRFMF-04 was submitted to Beta Analytic, Inc., for the AMS radiocarbon analysis using the "MicroSample AMS Counting Service" now available; however,...
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE GIBSON DAM SITE ON THE SUN RIVER, MONTANA (2005)
A single bulk soil sample from along the Sun River near Gibson Dam in central Montana was floated to recover organic fragments suitable for radiocarbon analysis. This sample was recovered from the Ab horizon at a depth of 15-20 cm. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE HONEY LAKE FAULT, NORTHEASTERN CALIFORNIA (2006)
A total of three bulk soil samples from the Honey Lake Fault near the town of Doyle in northeastern California were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from a distinct stratigraphic layer of a stream cut exposure during a paleoseismic study. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE MAPLETON MEGATRENCH, UTAH (2005)
A total of 10 bulk soil samples from the Mapleton megatrench site on the Provo segment of the Wasatch fault zone, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. One sample was collected from the trench, while the remaining nine samples were recovered from Boreholes B1 and B2. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE SHOSHONE RANGE, NEVADA, NEAR BATTLE MOUNTAIN (2002)
Three bulk soil samples from a horizon on the west flank of the Shoshone Range, Nevada, near Battle Mountain 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 THE SURPRISE VALLEY, NORTHEASTERN CALIFORNIA (2005)
Seven bulk soil samples from the Surprise Valley of northeastern California were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from trench and stream exposures across a fault scarp in latest Quaternary lacustrine, colluvial, and debris-flow sediments. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE WILLOW CREEK TRENCHES, WASATCH FAULT, UTAH (2005)
A total of six bulk soil samples from stratigraphic horizons in trenches excavated across the Nephi segment of the Wasatch fault, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from two trenches: Willow Creek North (WCN) and Willow Creek South (WCS). Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. After initial examination of the samples was complete,...
EXAMINATION OF BULK SOIL FOR RADIOCARBON DATABLE MATERIAL FROM THE WILLOW CREEK TRENCHES, WASATCH FAULT, UTAH (2006)
Eight additional bulk soil samples from stratigraphic horizons in trenches excavated across the Nephi segment of the Wasatch fault, Utah, were floated to recover organic fragments suitable for radiocarbon analysis. Samples were recovered from both the Willow Creek North (WCN) and Willow Creek South (WCS) trenches. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. After initial examination of the samples was complete,...
EXAMINATION OF BULK SOIL FROM ALONG THE OGDEN RIVER, DOWNSTREAM OF PINEVIEW DAM, UTAH (2003)
A single bulk soil sample from along the Ogden River downstream of Pineview Dam in north-central 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 FROM ALONG THE WEST WALKER RIVER, CALIFORNIA (1999)
Three bulk soil samples from potential buried surfaces associated with flood deposits in an inset terrace along the West Walker River, California, were floated to recover organic fragments suitable for radiocarbon dating. 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 SAMPLES FROM ICY POINT, GLACIER BAY NATIONAL PARK, ALASKA FOR RADIOCARBON DATABLE MATERIAL (2018)
Marine terraces T6 and T8, located at Icy Point in Glacier National Park, Alaska, are associated with sea level changes and tectonic activity along the Fairweather fault. Bulk soil, collected from each site was submitted for macrofloral analysis to recover and identify organic materials suitable for radiocarbon age determination.
EXAMINATION OF BULK SOIL SAMPLES PRIOR TO RADIOCARBON ANALYSIS FROM ALONG THE NORTH PLATTE RIVER, WYOMING (2004)
A total of three bulk soil samples from along the North Platte River in central Wyoming were floated to recover organic fragments suitable for radiocarbon analysis. These samples were recovered from a single soil pit on a late Holocene River terrace, downstream of Pathfinder Dam. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
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/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.