collapse sink

collapse sink

[kə′laps ‚siŋk]
(geology)
A sinkhole resulting from local collapse of a cavern that has been enlarged by solution and erosion.
References in periodicals archive ?
Collapse sinks generally form near-circular or elliptical features with steep walls but the sink morphology may not show this distinct shape with GPR techniques, as it may be obscured by sediment infilling.
Thus most collapse sinks are likely the result of loss of ceiling support and collapse into pre-existing hypogene caves.