570 



GINSBURG, LLOYD, STOCKMAN AND MCCALLUM 



TRAVE RSE I 



[CHAP. 22 



South 

 J 



Wove circulation 

 6 F E 



Tidal and wind 

 driven circulation 



North 



:> c 8 A 



Nautical miles 



Fig. 11. Constituent composition, Traverse I, Florida reef tract. (After Ginsburg, 1956.) 

 (See Fig. 6 for location.) 



E. The Gulf of Batahano Reef Tract 



The western part of this area, Hke the Florida reef tract, has a marginal zone 

 high in coral and coralline algae succeeded landward by a zone high in Halimeda 

 (Fig. 8). The rather abrupt decrease in the percentage of Halimeda northward 

 probably reflects high temperature and fluctuating salinity or an increase in 

 the amount of silt- and clay-sized jjarticles (Fig. 8). Apparently sampling did 

 not extend far enough south to encounter the coral and coralline algae zone 

 along the shelf margin east of the Isle of Pines. 



5. Discussion of the Distribution of Skeletal Particles 



The last three examples from Bikini, the Florida reef tract and the Gulf of 

 Batabano show consistent relationships between variation in the circulation 



