TERTIARY AND QUATERNARY PALEONTOLOGY, NORTHEASTERN FLORIDA 29 
5143—Well at Kissimmee, Osceola Co., Fla., depth 96 feet from surface. T. W. 
Vaughan, collector. 
514-1—From well of Mary Boss, on island in Lake Tohopekaliga, about three miles 
from Kissimmee, Fla., depth 150 feet. T. W. Vaughan, collector. 
5634—From lower marl stratum at city marlpit about one mile south of DeLand, 
Volusia Co., Fla. E. H. Sellards, collector. 
5869—From upper marl stratum at city marlpit, about one mile south of DeLand, 
Volusia Co., Fla. E. H. Sellards, collector. 
6096-6097—Half a mile above A. C. L. R. R. bridge over St. Johns River, Putnam 
Co., Fla., 5 to 7 ft. below the surface and the same distance above high-water 
level. F. G. Clapp, collector. 
7056—Rose Bluff, Nassau Co., Fla., opposite to and four miles southwest of St. 
Mary’s, Camden Co., Ga. Otto Veatch, collector. 
NASHUA MARL 
NAME AND ORIGINAL DESCRIPTION 
The name Nashua marl was proposed by G. C. Matson and F. G. 
Clapp 1 who give the following description : 
“During the progress of the field work for this report, collections 
of fossils were obtained which indicate that Pliocene marls are 
extensively developed in the valley of the St. Johns River, and a bed of 
similar marl near Daytona has been referred to the same period. These 
beds have certain faunal elements which distinguish them from the 
other Pliocene beds of Florida; and, hence, they are given a distinct 
name. They are here designated the Nashua marl, from a locality on the 
St. Johns River, where they are best exposed. Further study may result 
in uniting all of the marine Pliocene of Florida under a single name; 
but for the present it appears desirable to avoid hasty correlation by the 
use of local names for the beds of different localities, especially where 
conditions governing deposition appear to have been unlike. 
“Stratigraphic Position :—The Nashua marl is thought to rest un- 
conformably upon the Miocene at DeLand; but this opinion lacks con¬ 
firmation, as the collections from that locality have not been studied in 
sufficient detail to determine the exact age of the beds. At various 
localities, the contact between this formation and the overlying Pleisto¬ 
cene sand has been observed and it is everywhere marked by a distinct 
unconformity. The Pleistocene beds rest upon an undulating surface 
of the Nashua marl, which is clearly due to erosion, and the contrast 
1 Matson, G. C., and Clapp, F. G. A preliminary report of the geology of Flor¬ 
ida with special reference to the stratigraphy. Fla. State Geol. Survey, 2nd Ann. 
Report, pp. 128-130, 1909. 
