USGS Home
Contact USGS
Search USGS

Figure 28. Oblique aerial photo looking southwest shows the large sinkhole off north Key Largo (from Shinn et al., 1996; see Fig. 27 for location). Positions of seismic-reflection profile A-A' (Fig. 29), jet-probe site, and core hole no. 2 drilled into sinkhole rim in 1991 are shown. Light areas are carbonate sand. Dark areas within sinkhole are sea grasses. Dark-crescent area at left side of sinkhole consists of algae. Maximum thickness of sinkhole sediments is not known. Distance across sinkhole is ~600 m.

Printable Version (2.6 MB PDF)

Can't see the printable PDF version? Get the free Adobe Acrobat® Reader.

Coastal & Marine Geology Program > Center for Coastal & Watershed Studies > Professional Paper 1751