John Day River (Geographic Keyword)
1-3 (3 Records)
A single bulk soil sample from a flood deposit on the John Day River near Twickenham, north-central Oregon, was floated to recover organic fragments suitable for radiocarbon analysis. 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 (2008)
Samples from along the Middle Fork of the John Day River in east-central Oregon were collected for a study of fluvial geomorphology. A total of 27 detrital charcoal samples were submitted for identification, and three bulk soil samples were examined for pollen and macrofloral remains. These samples were recovered from soil pit or natural bank exposures along the river. Macrofloral, including charcoal, and pollen identifications will be used to provide information concerning plant taxa that may...
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...