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Post‐Mazama Natrargids in Dixie Valley, Nevada
Author(s) -
Alexander E. B.,
Nettleton W. D.
Publication year - 1977
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1977.03615995004100060043x
Subject(s) - geology , radiocarbon dating , volcanic ash , structural basin , precipitation , geochemistry , horizon , volcano , weathering , geomorphology , hydrology (agriculture) , physical geography , paleontology , geography , physics , geotechnical engineering , astronomy , meteorology
Some of the youngest Natrargids in central Nevada are in basin‐fill containing volcanic ash. South of the salt flat in Dixie Valley they are associated with Torrifluvents and Torriorthents in a continental climate with mean temperatures about 12 to 14°C and mean annual precipitation between 10 and 15 cm. Since there are lenses of Mazama ash below the natric horizons in some of these Natrargids, they are know to be < 6,600 radiocarbon years old. A representative Typic Natargid in silty post‐Mazama basin‐fill sediments is described. Illuviation is confirmed by clay skins in the natric horizon. The present precipitation is adequate to account for its development.