Bulk Sediment (Material Keyword)
1-6 (6 Records)
Eight bulk sediment samples were submitted for charcoal identification of radiocarbon datable materials and AMS radiocarbon dating from the south granite mountain fault system, Seminoe Mountains, central Wyoming.
BULK SEDIMENT ANALYSIS AND AMS RADIOCARBON AGE DETERMINATION OF SAMPLES FROM THE TOPLIFF HILL SITE, TOOELE COUNTY, UTAH (2019)
The Topliff Fault is a north-trending fault zone in the Rush Valley of Tooele County, Utah. Geological research along the fault at the Topliff Hill Site aims to better understand prehistoric earthquakes. In association with ongoing research, samples were submitted for bulk sediment analysis and AMS radiocarbon age determination, with the goal of providing a timeline of earthquakes at the fault.
CHARCOAL IDENTIFICATION AND AMS RADIOCARBON DATING OF SAMPLES FROM ALONG THE YAKIMA RIVER, YAKIMA, WASHINGTON (2009)
A total of eighteen charcoal samples and four bulk soil samples from soil pits or trenches on stream terraces adjacent to the Yakima River in eastern Washington were floated to recover organic fragments suitable for radiocarbon analysis. These samples were collected for a study of Holocene terrace chronology along the Yakima River. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated. Six radiocarbon dates were obtained.
EXTRACTION OF MICROCHARCOAL AND AMS RADIOCARBON DATING OF SAMPLES FROM FORT SAGE SOUTH PALEOSEISMIC TRENCH, CALIFORNIA (2009)
Sediment samples were collected from a trench across an active normal fault in the Fort Sage Mountains in northeast California with the purpose of gaining insight into earthquake activity. These sediment samples were examined to recover organic material suitable for AMS radiocarbon dating. No macroscopic charcoal or other organic fragments were noted in these samples; therefore, they were processed to recover microscopic charcoal fragments (microcharcoal) for dating. Two of the samples yielded...
MACROFLORAL ANALYSIS OF BULK SEDIMENT SAMPLES TO IDENTIFY CHARRED REMAINS SUITABLE FOR AMS RADIOCARBON DATING FROM ANTELOPE VALLEY NEAR TOPAZ LAKE, CALIFORNIA-NEVADA BORDER (2009)
Bulk soil samples from paleoseismic trenches were examined to recover charred material suitable for AMS radiocarbon dating. These trenches were excavated across the active fault bounding the west side of Antelope Valley near Topaz Lake along the California-Nevada border. Botanic components and detrital charcoal were identified, and potentially radiocarbon datable material was separated.
POLLEN AND MACROFLORAL ANALYSIS OF BULK SOIL SAMPLES AND IDENTIFICATION OF DETRITAL CHARCOAL SAMPLES FROM ALONG THE MIDDLE FORK JOHN DAY RIVER, OREGON (2009)
Samples were collected along the Middle Fork of the John Day River in east-central Oregon for a study of fluvial geomorphology. A total of 32 detrital charcoal/wood samples were submitted for identification, and 11 bulk soil samples were examined for pollen and macrofloral remains. These samples were recovered from soil pit or natural bank exposures along the river. After successful completion of this phase of the study, an additional eight pollen, eleven macrofloral, and two botanic samples...