Rhizoconcretions in vitric ash-fall tuff, Nye County, Nevada

Geological Society of America Bulletin



Small, vertically elongate concretionlike structures, here called rhizoconcretions, are found in scattered localities in and near the southern part of the Belted Range of Nye CountyNevada. The rhizoconcretions occur within a stratigraphically restricted zone in bedded vitric ash-fall tuff of late Tertiary age. The rhizoconcretions differ in mineralogy from their host rock in that they are cemented by a binder of undetermined composition, possibly a zeolite, whereas the host tuffs are un-cemented. These structures appear to have formed during diagenesis of the tuff by means of capillary movement of subsurface waters that reacted with volcanic glass within the conduits to form the cementing material. 

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Publication type Article
Publication Subtype Journal Article
Title Rhizoconcretions in vitric ash-fall tuff, Nye County, Nevada
Series title Geological Society of America Bulletin
DOI 10.1130/0016-7606(1966)77[313:RIVATN]2.0.CO;2
Volume 77
Issue 3
Year Published 1966
Language English
Publisher Geological Society of America
Description 6 p.
First page 313
Last page 318
Country United States
State Nevada
County Nye County
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