SECOND ANNUAL REPORT-SOUTHERN EEORIDA. 
211 
but they are scattered and were not visited as it was thought doubtful 
if any direct transition from oolitic to non-oolitic beds could be found 
or any line of demarcation established. The northern limits of the 
formation are undefined. As before stated, it probably extends into 
St. Lucie County. But little, is known of its western extent under the 
Everglades, while seaward it is buried by sand. 
Structure:—The rock is not as distinctly cross bedded as are many 
exposures of the Miami oolite and the beds are rather heavier. The 
sandy layers at the type locality west of Lantana are two or three 
inches thick, while the limy beds may be a foot or more thick. 
MIAMI OOEITE. / 
Synonymy:—The outcrops of oolite at New River, Miami River, 
Long Key in the Everglades, and at other points in southeastern Flor¬ 
ida were noted by army officers at the time of the Seminole War. The 
first writer to recognize the age of the deposits appears to have been 
Buckingham Smith who in 1847 noted the many shells of mollusks in 
the oolite at Miami River and determined the age as post-Pliocene. 1 
In 1851 Tuomey described outcrops of the rock also on Miami 
River, 2 and in the same year L. Agassiz mentioned them in his ac¬ 
count of the Florida reefs. 3 
Shaler in 1890, following the views of L. Agassiz, regarded the 
oolitic limestone at New River and Cocoanut Grove as formed on a 
coral reef and included it and other rock, possibly coquina, in his 
Miami Reef. 
A. Agassiz in 1895 stated that he believed the limestones at Miami 
and Cocoanut Grove to be of aeolian origin, 4 and in a paper published 
the following year gave his reasons in detail. 5 His views were not 
accepted by Griswold who saw the rock not only along the water front 
but some twenty miles inland. 6 
All the exposures of oolitic limestone on the mainland of south¬ 
eastern Florida are in this paper included under the designation of 
Miami oolite. 
1 Smith, Buckingham. Report on Reconnoissance of the Everglades made 
to the Secretary of the Treasury, June, 1848. 
2 Tuomey, M. Notice of the Geology of the Florida Keys and of the South¬ 
ern Coast of Florida. Am. Jour. Sci. (2) xi, 1851, pp. 390-394. 
3 Agassiz, Louis. Florida Reefs, Keys and Coast, U. S. Coast Survey Re¬ 
port for 1851; (Appendix No. 10), 1852, pp. 145-160. 
4 Agassiz, Alexander. Note on the Florida Reef. Am. Jour. Sci. (3), xlix, 
1855, pp. 154-155. 
5 Agassiz, Alexander. The Elevated Reef of Florida. Mus. Com. Zool. Bull, 
xxvii, No. 2, 1896, pp. 29-62. 
6 Griswold, Leon S., Notes on the Geology of Southern Florida. Mus. Comp, 
Zool. Bull, xxvii, No. 2, 1896, pp. 52-59. 
