Phylloid algal mounds in the Paradox Basin, southwestern USA: an alternative to the in situ constructional growth model? - Perspectives in Carbonate Geology - page 243

(a)

(b)

FLORIDA

G U L F

N

O F

25 00'

M E X I C O

STUDY AREA

MARQUESAS
KEYS

THE
QUICKSANDS

KEY WEST

24 30'

km

0 50

82 30' 82 00' 81 30' 81 00'

Fig. 6. (a) Space shuttle photograph and (b) map showing lower Florida peninsula and Florida Keys. Box in lower left of
photograph outlines the Marquesas Keys and the Quicksands area where large amplitude sand waves comprised mostly of
Halimeda plates are actively forming due to tidal currents. Image courtesy of the Image Science and Analysis Laboratory,
NASA, Johnson Space Centre. Map modifi ed from Shinn et al . (1990).