134 
FLORIDA GEOLOGICAL SURVEY-I4TH ANNUAL REPORT 
St. Mary’s River, exposures on, 64, 114 
Salt domes, 51-52 
Salt springs, 113 
Salt water from deep wells, 84, 100, 105 
Sand-lime brick, production of, 31-32 
Sands and gravels, mention of, produc¬ 
tion of, etc., 13, 31, 66, 73, 75, 97, 110 
Sands and sandstones, reservoirs for oil, 
46- 47 
Sanford, depth to Eocene at, 85, 122 
Santa Rosa County, 73, 121-122 
Sarasota County, 87, 122 
Sebring, well at, 101 
Seeps, oil and gas, 57, 58 
Sellards, E. H., 3, 5, 32, 119 
Selma Chalk, 73 
Seminole County, 85, 122 
Shales as source of oil, 47 
Shell marls, 62, 63, 65, 74, 75, 91, 96-98, 
100, 103, 105, 108, 110, 112, 115, 116, 
118, 120, 125 
Shell mounds, 122 
Shepard, J. L., 41, 105 
Sinks, 77, 80, 110, 112 
Shoal River, exposures on, 63, 115, 125 
Shoal River marl, 63 
Smith, E. A., referred to, 72, 73, 116 
Sopchoppy River, exposures on, 125 
Southern Florida, hard limestones of, 55 
Specific gravity of oil, 43-44 
influence of in migration of oil, 46 
Springs, escape of gases from, 57-58 
State Board of Health, 11 
State Department of Agriculture, 11 
State Road Department, 11 
Statistics on mineral production, 20, 26 
Stephenson, L. W., 66 
Storage of oil, 46-47 
Structural features in Florida, discus¬ 
sion of, 67, 69 
Structures favorable to oil accumulation, 
47- 53 
Structure of no significance unless forma¬ 
tions petroliferous, 58-59 
Sulphur in salt domes, 52 
Summary of mineral production, 22, 32 
Sumter County, 39, 40, 60, 70, 80, 123, 128 
Surface indications of oil, 57-58 
Surface topography, use of in determin¬ 
ing structure, 58 
Suwannee County, 60, 61, 79, 106, 123 
Suwannee River, 80, 102, 105, 112, 123 
structure of area between the and the 
Ocklocknee River, 69 
Synclines, 51, 104, 106 
T 
Table of geologic formations of Gulf 
Coastal Plain, 71 
Tallahassee, 65, 69, 110-111 
absence of Upper Cretaceous from and 
eastward, 69 
log of well at, 111 
Tallahassee Area, 77-79, 103, 125, 128 
structure of, 77 
Tampa, 87, 107, 119 
Tampa Area, 87 
Tampa Bay, exposures on, 62 
Tampa Formation, description and dis¬ 
tribution of, 61, 62, 106, 107, 112, 118 
relation of to the Chattahoochee, 61, 62 
thickness of, 61 
Tarpon Springs, age of limestone near, 
118 
Taylor County, 61, 124 
Tennessee, oil-producing formations of, 
57 
Texas, oil-producing formations of, 56- 
57 
salt domes of, 51-52 
Theories as to origin and accumulation 
of oil, 44-45 
Tiger Bay, depth to Ocala and L. Cre¬ 
taceous at, 90, 91 
log of well near, 87-91, 119 
Titanium (see ilmenite), 20 
Topographic mapping, 12 
Topography, relation of to underground 
structure, 58 
Trail Ridge, 97, 100, 102 
Townsend, J. A., well of, 124 
Tuscaloosa Formation, 73 
U 
Underground waters, conservation of, 14 
Union County, 80, 124 
United States Bureau of Soils, 11 
United States Census, 20 
United States Geological Survey, 10, 11, 
12, 20, 26, 41, 42, 101, 103, 104, 107, 
123 
United States National Museum, 62 
Upper Cretaceous, absence of in peninsu¬ 
lar Florida, 60, 77, 80, 123 
probable presence of in west Florida, 
73, 123 
V 
Vaughan, T. Wayland, 41, 103, 125 
Veatch, J. O., 66 
Vegetable oils, 44 
Vegetation, studies of, 12-13 
Vero, exposures near, 121 
