restricted basin

[ri′strik·təd ′bās·ən]

(geology)

A depression in the floor of the ocean in which the water circulation is topographically restricted and therefore generally is oxygen-depleted. Also known as barred basin; silled basin.

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References in periodicals archive

The Michigan Formation in what is now western Michigan probably formed in a shallow, marginal-marine, restricted basin or basins (e.g., restricted embayments, lagoons, or salinas).

Coprolites, cololites, and fish fossils in the Mississippian Michigan Formation, Western Michigan

One possible explanation for this difference is that runoff is concentrated in the restricted basin of the Norwegian Sea rather than being mixed by the currents of the open Atlantic Ocean.

Deep-sea sediments reveal the history of the great ocean conveyor

Lewan [26] proposed that the phytoplankton residing in environments that are dominated by organic-derived [CO.sub.2] results in amorphous kerogens, which are expected to occur in restricted basins that are overlain by stratified shallow (<200 m) water.

Geochemical investigation of lacustrine oil shale in the lunpola basin (Tibet): implications for paleoenvironment and paleoclimate

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