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Synform

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Synform

 

a structure formed by the downward bending of rock strata onto earlier and steeper folds of smaller size. Synforms are usually accompanied by antiforms, which are oppositely shaped. For example, the sheets of overthrust nappes often form, together with rocks, the foundation of a synform and an antiform. While the cores of synclines contain only younger rocks, those of synforms may contain both older and younger rocks.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive
The NE-SW striking Prague Synform extends from southwestern Prague to the Beroun District of Central Bohemia (Figure 1a-b).
Synform (Laufer, 1991): Errors resulting from sound-alike or look-alike confusion; e.g., context vs.
12a), a general indication of the northward dip of the southern limb of the synform can be ascertained by strong reflections from the scarp slopes facing the sun (south) and less reflection along the dip slopes (see location A on Fig.
The Nampundwe deposit lies on the western flank of a synform basin with the orebodies hosted in the Cheta Formation which includes massive dolomites and impure limestones, steeply deeping to the northeast.
Artemis Management Systems will focus on project management, American Software on the enterprise resource planning market, Optum on supply chain management and OI Synform Groupe Focal on logistics software customers.
Intraplate volcanism in compressive regimes has been recently suggested to be driven by the compression near collisional/subduction plate boundaries that causes lithospheric folding of the foreland region, resulting in a decrease of the pressure beneath the swell of the antiform while the pressure beneath the synform increases (Shin et al., 2012).
Late Aeronian graptolite sedgwickii Event, associated carbon isotope excursion and facies changes in the Prague Synform (Barrandian, Bohemia).
The basement rocks, fractured and weathered in regolith, are Devonian limestones of the folded and faulted upper allochthonous unit of the Prague Synform which is the uppermost preserved unit of the Bohemicum (Melichar and Hladil, 1999; Melichar, 2004; Chab et al., 2010).
Structural analysis will determine the exact nature of the geology, though it is possible that the mineralisation outline defines an overturned isoclinal synform with both limbs truncated by erosion below shallow surface cover.
Further drilling during 1999 targeted at 150 depth on the southern limb of the Nifty synform also encountered chalcocite mineralisation.
Slavik gives an interesting study of Silurian conodonts from the Prague Synform. Radzevicius et al.
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