pseudonodule

[¦sü·dō′näj‚ül]

(geology)

A primary sedimentary structure consisting of a ball-like mass of sandstone enclosed in shale or mudstone; characterized by a rounded base with upturned or inrolled edges and resulting from the settling of sand into underlying clay or mud which has welled up between isolated sand masses. Also known as sand roll.

Mentioned in

sand roll

References in periodicals archive

They are formed by the sinking of load casts into water-saturated fine sediments, synonymous with the "pseudonodules" of Kuenen [18].

Soft-sediment deformation structures interpreted as seismites in the Kolankaya formation, Denizli basin (SW Turkey)

For the diagnosis of Hashimoto thyroiditis in the cases determined as having hypothyroidism, the following criteria were considered to be present: heterogeneous pattern in thyroid USG, pseudonodules and/or diffuse bands together with Anti-TPO and/or Anti-Tg positivity.

Thyroid diseases in pregnancy: The importance of anamnesis

Sarul P, Vlahova M, Ivanova A, Atanassov A (1995) Direct shoot formation in spontaneously occurring root pseudonodules of alfalfa (Medicago sativa L.).

Endogenous hormone concentrations in explants and calluses of bitter melon (Momordica charantia L.)/Concentraciones de hormonas endogenas en explantes y callos de melon amargo (Momordica charantia L.)/Concentracoes de hormonas endogenas em explantes e calos de Malao-de-Sao-Caetano (Momordica charantia L.)

Host-plant responses to LCOs involve calcium as a second messenger via G protein and phospholipases C and D, and include root hair deformation, infection thread formation, cortical cell division, and the formation of pseudonodules in some species (for recent reviews see Broughton et al., 2003; Limpens and Bisseling, 2003; Ferguson and Mathesius 2003).

Stability and activity of the major nod factor produced by Bradyrhizobium japonicum following purification, sterilization, and storage

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