How many marine terraces are shown on the profile?

The following questions are based on Figure 49-8, a portion of the “San Clemente Island Central, California” quadrangle shown on the following page (scale 1:24,000; contour interval 25 feet; index contours drawn every fourth line; to view this map in color, go to the Lab Manual website or scan the QR code for this exercise), and the stereogram of San Clemente Island (Figure 49-7). The map and stereogram show a series of marine terraces on San Clemente Island in southern California (32°51"08"N, 118°29'58"W). The terraces have been incised by streams in several places.





Figure 49-8: USGS “San Clemente Island Central, California” quadrangle (scale 1:24,000; contour interval 25 feet; note that the index contours on this map have been drawn every fourth line;cN)


At least 6

Environmental & Atmospheric Sciences

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Environmental & Atmospheric Sciences

List two differences between simple polygons and regions.

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Environmental & Atmospheric Sciences