Buck Island Reef National Monument Geologic Resources Inventory
Buck Island Reef National Monument Geologic Resources Inventory
Buck Island Reef National Monument Geologic Resources Inventory
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Figure 10. Beach sand at Turtle Bay. Whetten (1966) mapped recent surficial deposits (Qal) surrounding <strong>Buck</strong> <strong>Island</strong>. These deposits include<br />
beach sand composed of fragments of coral and mollusks. <strong>National</strong> Park Service photograph courtesy Zandy Hillis-Starr (St. Croix and <strong>Buck</strong><br />
<strong>Island</strong> NPS areas).<br />
Figure 111. Seismicity map of the Caribbean. Recorded seismic activity outlines the boundary of the oval-shaped Caribbean plate. The dots on<br />
the figure record 16 years (1999–2006) of earthquakes. The colors represent depths. The size of the dots indicates relative magnitude of the<br />
earthquakes. The orange star (not to scale) indicates the location of the January 12, 2010, earthquake in Haiti. Yellow lines show plate<br />
boundaries. Modified from U.S. <strong>Geologic</strong>al Survey (2009) by Jason Kenworthy (NPS <strong>Geologic</strong> <strong>Resources</strong> Division).<br />
16 NPS <strong>Geologic</strong> <strong>Resources</strong> Division
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