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Record Nr. |
UNINA9910703865003321 |
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Autore |
Baitis Karin E. |
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Titolo |
Gray clay (Malpass clay) in the west Eugene Wetlands and the Willamette Valley is weathered and redeposited ash from Mount Mazama / / authors: Karin E. Baitis, Gregory J. Retallack, Michael E. James |
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Pubbl/distr/stampa |
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Denver, CO : , : U.S. Department of the Interior, Bureau of Land Management, National Operations Center, , 2015 |
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Descrizione fisica |
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1 online resource (iv, 21 pages) : illustrations (some color), maps (some color) |
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Collana |
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Soggetti |
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Volcanic ash, tuff, etc - Oregon |
Clay soils - Oregon |
Volcanic eruptions - Oregon |
Volcanic ash, tuff, etc |
Volcanic eruptions |
Clay soils |
Oregon Mount Mazama |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from title screen (viewed on July 13, 2015). |
"June 2015"--cover. |
"BLM/OC/ST-15/006+7100"--page [2] of cover. |
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Nota di bibliografia |
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Includes bibliographic references (pages 19-21). |
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Nota di contenuto |
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Abstract--Introduction--Geologic setting of Malpass clay and Dayton soil--Material and methods--Stratigraphic position of the gray clay in the west Eugene wetlands--Chromatography--Vertic soil and gilgai relief--X-ray diffraction--Transmission electron microscope EDX analyses--Transmission electron microscope images--Mineralogy of gray clay unit--Radiometric ages--Palynology--Conclusions--References |
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