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Distribution and Implications of Sponge Spicules in Surficial Deposits in Ohio

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dc.creator Wilding, L. P. en_US
dc.creator Drees, L. R. en_US
dc.date.accessioned 2005-10-01T02:20:24Z
dc.date.available 2005-10-01T02:20:24Z
dc.date.issued 1968-03 en_US
dc.identifier.citation The Ohio Journal of Science. v68 n2 (March, 1968), 92-99 en_US
dc.identifier.issn 0030-0950 en_US
dc.identifier.uri http://hdl.handle.net/1811/5373
dc.description Author Institution: Agronomy Department, The Ohio State University, Columbus, Ohio en_US
dc.description.abstract Microscopic examination of biogenic opal isolated from the 0.05-0.02-mm total mineral fraction of 12 upland soil profiles indicates that fragments of sponge spicules are minor but ubiquitous constituents of Ohio soils, with major concentrations in the upper 10 to 15 inches of the profile. Quantities range from about 30 to 2000 parts per million biogenic opal or 1 to 65 parts per 10 million parts soil. Spicules are absent or extremely rare in calcareous Wisconsin-age till deposits. Their correlation with horizons high in silt content (50-75%), and their size and depth distribution in landscape positions which preclude an authigenic origin, indicate their aeolian transport from aquatic source areas with other loessial materials. Identification of spicules thus provides direct evidence that these horizons have been derived from loess or loess-till admixtures. This microscopic technique may serve useful for the identification of loess when field or laboratory particle-size analysis yields inconclusive evidence. en_US
dc.format.extent 758160 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given. en_US
dc.title Distribution and Implications of Sponge Spicules in Surficial Deposits in Ohio en_US