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National Seafloor Mapping and Benthic Habitat Studies

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Lake Michigan

Color-coded shaded-relief bathymetry of Hog Island Reef


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Color coded shaded relief bathymetry, see caption below.

Color-coded shaded-relief bathymetry of the area southeast of Hog Island including Hog Island Reef (A). The reef is about 1200 by 1400 m and ranges in water depth from 2 to 18 m. Underwater observations on the reef report flat-lying outcrops of limestone (Somers, 1968). This mapped area is marked by strong northwest-southeast ridges and lineations (B) about a meter high and a few meters wide. An indistinct northeast-southwest lineation is also present, especially in the northeastern quadrant of the image (C). Draped over this mapped region are patches of smoother relief, possibly sand, which forms north-south bedforms (D).

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URL: http://walrus.wr.usgs.gov/pacmaps/lm-hibathy.html
Page Contact Information: Peter Dartnell
Page Maintained By: Laura Zink Torresan
Page Last Modified: 8 September 2008 (lzt)