Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan

Steven M. Colman; D. S. Foster; D.W. Harrison

doi:10.1016/s0380-1330(92)71294-5

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Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan

Steven M. Colman·D. S. Foster·D.W. Harrison

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Abstract

The most common features are subcircular depressions, commonly compound, that are irregularly distributed across the lake floor. The depressions are most common in the southern basin of the lake where lacustrine sediments are more than a few meters thick, corresponding to water depths greater than about 90 m. We have divided the depressions into three types on the basis of their internal structure seen in seismic-reflection profiles. The depressions show varying degrees of muting, ranging from fresh to completely buried, suggesting a range in the time of their formation. The origin of the depressions is problematic, but their structure suggests collapse and(or) subsidence. -from Authors

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Journal of Great Lakes Research Article

Source-reported bounding extent: 41.64007838467894° to 46.118941506107056° latitude; -87.835693359375° to -84.83642578125° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Steven M. Colman, D. S. Foster, D.W. Harrison. 1992. Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan. https://doi.org/10.1016/s0380-1330(92)71294-5

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