Hinge Line

hinge line

[′hinj ‚līn]
(geology)
The line separating the region in which a beach has been thrust upward from that in which it is horizontal.
A line in the plane of a hinge fault separating the part of a fault along which thrust or reverse movement occurred from that having normal movement.

Hinge Line

 

a line connecting the points of maximum bending of the strata in a fold. If a series of strata is compressed into a

Figure 1. Hinge lines: (a) the hinge line of an anticline, (b) the hinge line of a syncline

fold, each stratum has its own hinge line, and the plane that passes through the corresponding series of hinge lines is called the axial surface of the fold.

References in periodicals archive ?
Shell shape was convex--convex, with direct hinge line.
The umbo in bivalve larvae refers to a small prominence that develops along the hinge line and gives rise to the term umbonate larvae, that is those larvae that having developed an umbo have lost their earlier straight hinge or D-shaped appearance.
Tightening is furthermore, not a general feature of the transect but becomes more pronounced toward the Fredericton Fault, just as the same folds display more strongly curvilinear hinge lines (Figs 6, 7).
In the best specimen, the pectoral-abdominal sulcus is congruent with a hinge line, consistent with plastral kinesis.
Shell dorsibiconvex, slightly transverse suboval to almost subrectangular in outline, about 95% as long as wide, with maximum width between hinge line and midlength.
Liberty Hardware launched its new Euro Concealo hinge line at the show.
SOSSentinel is a line of electronic monitoring hinges introduced for the SOSS Invisible Hinge Line, and manufactured by Universal Industrial Products Co.
In an example of the latter, Hampel worked with a customer who was having a problem with dumpster lids breaking along the hinge line, a critical part element.
A by having less distinct comarginal ornamentation, more closely-spaced body costae, and the umbonal area extends further above the hinge line.