Stylolite

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stylolite

[′stī·lə‚līt]
(geology)
An irregular surface, generally parallel to a bedding plane, in which small toothlike projections on one side of the surface fit into cavities of complementary shape on the other surface; interpreted to result diagenetically by pressure solution.

Stylolite

 

a type of feature encountered in sedimentary rocks wherein spinous or columnar projections on the surface of one layer fit into cavities of complementary shape on a second layer. In cross section, the stylolite surface suggests gear teeth in mesh. The columns can reach 1 m in length, and their sides are covered with striations parallel to the longitudinal axis. A clayey substance forms along the plane of the seam. Stylolites are often converted to sutures—zigzag seams with conical teeth. Stylolites occur in limestones and, more rarely, dolomites, coal, argillites, quartzites, gypsum, and other sedimentary formations.

REFERENCES

Kholodov, V. N. “K voprosu o proiskhozhdenii suturo-stilolitovykh shvov.” Izv. AN SSSR: Ser. geologicheskaia, 1955, no. 2.
Bushinskii, G. I. “O stilolitakh.” Izv. AN SSSR: Ser. geologicheskaia, 1961, no. 8.

stylolite

A jointed or irregular columnar structure occasionally found in beds of limestone, uniting the adjoining surfaces of two layers of rock.
References in periodicals archive ?
Chemical compaction is present in the form of stylolites, however, lengths of stylolites are very limited (Fig.
Some of these faults were reactivated as tectonic stylolites, displaying indentation parallel to the stratigraphy associated with N-S compression.
Jutana Formation is mainly characterized by, trough-, herring-bone-, hummocky- cross bedding at upper bedding planes and bedding parallel stylolites. Above the shale interval, there is dolomite which becomes fine grained and then gradually changes to dolomitic sandstone.
The petrographic study reveals the presence of fibrous calcite cement, isopachous drusy calcite, equant calcite cement, isopachous blocky sparry calcite cement and small scale stylolites which indicate that the limestones of the Mural Foramtion were subjected to shallow burial diagenesis.
The Tennessee marble is characterized by well developed stylolites having two orientations.
(1967) Stylolites of diagenetic age and their role in the interpretation of the southern Illinois fluorspar deposits.
Analyses of elliptical ooids, strongly oriented quartz grains, elongated clasts, tectonic stylolites and differentiated cleavages in the oolitic limestone/dolomite and calcareous quartzite of the Ambar Formation display a systematic regional arrangement.
[55] reported a high abundance of stylolites within the A3 "Hauptanhydrit" (Main Anhydrite) of the Gorleben salt dome in northern Germany.
Pressure solution textures are diverse and include stylolites (one or several generations, typically with different amplitudes), other types of sutured seams, isolated or fitting nodules, non-sutured seams (Choquette and James, 1987, 1990), and pseudo-bedding that can resemble layering caused by sedimentary processes (Bathurst 1987; Munnecke et al., 2001; Fig.