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Ocala Limestone

 · Blake D. B., Portell R. W. (2009) Implications for the study of fossil Asteroidea (Echinodermata) of new genera and species from the Eocene …

FLORIDAN AQUIFER SYSTEM

productive units are the Eocene age Avon Park Formation and Ocala Limestone. The Suwannee Limestone of Oligocene age is also a principal source of water, but it is thinner and much less areally extensive than the Eocene units. The Floridan aquifer system generally thickens toward the south from a thin edge near its northern limit.

STRATIGRAPHY, PALEONTOLOGY, AND ECONOMIC GEOLOGY …

age ditch at locality 11. 5. Log of a Clinchfield Penn-Dixie Cement Company test hole 8 drilled at locality 10. 6. Ocala Limestone (A) and Twiggs Clay (B) at the old Clinchfield 10 Penn-Dixie Cement Company east quarry, locality 10. The sug-gested type localty of the Clinchfield Sand is at sand pits located

International Journal of Speleology

formed within the upper third of the Eocene-age Ocala Limestone of the UFA (Fig. 1), an unconfined to semi-confined karst aquifer within west-central Florida. Matrix permeabilities of the Ocala Limestone range over three orders of magnitude, from 10-11.5 to 10-14.5 m2, and characterize this karst aquifer as eogenetic–in other words, the rock

The Age of the Ocala Limestone | Science

 · The Age of the Ocala Limestone. By G. D. Harris. See all Hide authors and affiliations. Science 14 Jan 1916: Vol. 43, Issue 1098, pp. 72 DOI: 10.1126/science.43.1098.72 . Article; Info & Metrics; eLetters; PDF; This is a PDF-only article. The first page of the PDF of this article ...

P.O. 1429

The Ocala Limestone of late Eocene age consists of white to light tan, soft and very weakly cemented to hard and recrys-tallized, foraminiferal, coquinoid limestone. The coquina is composed of whole and fragmented foraminiferal tests with some intermixed echinoid, bryozoan, and other biological debris.

Florida Cave Geology – River City Grotto

The Ocala Limestone formation (formerly the Ocala Group) consists of (in descending order) the Crystal River Formation, the Williston Formation, and the Inglis Formation, and ranges from 0 to 235 feet in thickness, averaging about 70 feet in the west central Florida area (technically these three "formations" should be "members" of the ...

Environmental geology and hydrogeology of the Ocala area ...

colored Ocala Group limestone. The Hawthorn Group has an average thick-ness of approximately 20 to 30 feet throughout the study area. Exceptions to this occur due to the presence of a number of paleosinks in Ocala limestone in which Hawthorn Group and younger sediments have filled old, inactive sinkholes. One such occurrence is FGS W-3889 (section

Ocala Limestone

In 1881 Eugene A. Smith announced the presence, underlying large areas in both western and peninsular Florida, of limestone which he correlated with the Vicksburg limestone of Mississippi and Alabama and designated by the term Vicksburg limestone. Among the localities he mentioned specifically are Marianna, in Jackson County, and Ocala, in Marion County....

Haile 15A – Florida Vertebrate Fossils

 · Fossils come from a filled fissure in the Ocala Limestone that was exposed by mining operations. The deposit was about 33 feet (10 m) in length, between 10 and 16 feet (3-5 m) in width, and its depth varied greatly between 6 and 20 feet (2-6 m).

HA 730-G Floridan aquifer system text

A thick sequence of carbonate rocks (limestone and dolomite) of Tertiary age comprise the Floridan aquifer system. The thickest and most productive formations of the system are the Avon Park Formation and the Ocala Limestone of Eocene age . The Suwannee Limestone (Oligocene age) also is a principal source of water, but it is thinner and much ...

Florida Eocene Limestone Right Under Our Noses ..

 · Posted May 18, 2016. Yes, this limestone of the Ocala and Swannee formations is commonly run through a crusher and then used as a base for construction all over the state of Florida. It is normally a powdery white to biege limestone that packs well …

Soft cream-colored granular Ocala limestone underlies the ...

GEOLOGY OF FLORIDA-OCALA LIMESTONE 69 Pliocene age, conceals the bedrock. The Ocala is generally covered by Pleistocene sand except in the eastern part, where it is overlain by the Alachua formation. As Levy County occupies the central part of the Ocala Up- lift, which extends westward beneath the Gulf of Mexico, ...

Hawthorn Group

The Hawthorn Group is a stratigraphic unit that includes several geologic formations of Late Oligocene to Pliocene age in North Florida, United States is known for its phosphate rock resources, and for its rich assemblages of Neogene vertebrate fossils was originally called the Waldo Formation by L.C. Johnson of the United States Geological Survey in 1887, and later became the Hawthorne ...

PUBLICATION NO. 6 RATE OF SOLUTION OF LIMESTONE IN …

 · Limestone of Oligocene age is present£ The Suwannee River originates in the Okeefenokee Swamp at an elevation of about 120 feet above sea level. The swamp is in an old Pliocene strath developed by an ancestral Suwannee River that originally . flowed northeasterly to the Atlantic Ocean off the Ocala Arch (Brooks, 1966).

Ocala Limestone

 · As now understood Ocala limestone comprises all rock of Eocene age exposed in Florida. This includes "Orbitoidal," Nummulitic," and "Millolitic" limestones of Dall as well as "Peninsular" limestone as interpreted by Matson. The Ocala limestone is of Jackson (late Eocene) age. Source: US geologic names lexicon (USGS Bull. 896, p. 1526-1527).

WEC189/UW208: Florida''s Geological History

The limestone unit that hosts much of the Floridan Aquifer is named the "Ocala Limestone Formation," a 33.9- to 55.6-Ma-old limestone formation (Martin and Dean 2001; Martin and Screaton 2001). Figure 5.

Download PDF The age of the Ocala limestone by C. Wythe ...

The upper Ocala Limestone is extensively silicified and contains. AGE AND CORRELATION, CLINCHFIELD SAND, GEORGIA E13 (, p. 28, 29) regarded the sand as late Eocene (Jackson) in age and included it as the lower unit of Cooke''s Tivola Tongue 6 of the Ocala Limestone.

Geology and Paleonto logy of the Ocala Limestone Exposed ...

or if it was never deposited. Overlying the Ocala Limestone throughout most of Sumter County are undifferentiated siliciclastic sediments of presumed Tertiary/Quaternary age. Along the eastern edge of the county, Hawthorn Group sediments overlie the Ocala Limestone. The Hawthorn Group is in turn overlain by the Cypresshead Formation (Figure 5).

Southeastern Geological Society Officers for 2011 Past ...

The Ocala Limestone is a relatively pure carbonate (90% to 95%) limestone that was deposited in a shallow, marineenvironment. The thickness of the unit in Florida''s central peninsula is typically less than 90 feet. The age of the Ocala Limestone is late

Geology and Hydrology of Karst in West-Central and North ...

Formation, the late Eocene Ocala Limestone, the early Oligocene Suwannee Limestone, and, south of Brooksville, the late Oligocene Tampa Limestone (Miller, 1986; Figure 3.2). The Ocala and Suwannee Limestones are the two stratigraphic units directly associated with most karst features, particularly where the …

Florida Crushed Stone

Age: Eocene (33.9 - 37.8 Ma) Stratigraphic Name: Ocala Limestone Description: Dall and Harris (1892) referred to the limestones exposed near Ocala, Marion County, in central peninsular Florida as the Ocala Limestone.Puri (1953, 1957) elevated the Ocala Limestone to group status recognizing its component formations on the basis of foraminiferal faunas (biozones).

Architecture of Air-Filled Caves within the Karst of the ...

Limestone of late Eocene age. The Ocala Limestone is cream to white, soft, friable, and very porous in the Brooksville Ridge. It ranges in thickness from 30 m north of the study area to more than 120 m south of the Brooksville Ridge (Miller, 1986). Petrographic investigations of the Ocala Limestone by Loizeaux (1995) demonstrate three 3rd-order ...

Florida Crushed Stone

Age: Eocene (33.9 - 37.8 Ma) Stratigraphic Name: Ocala Limestone Description: Dall and Harris (1892) referred to the limestones exposed near Ocala, Marion County, in central peninsular Florida as the Ocala Limestone.Puri (1953, 1957) elevated the Ocala Limestone …

Ocala Chert Stratigraphy

 · Limestone units comparable in age to the Ocala Limestone (Middle-Upper Eocene) also occur within the Jackson Group in the subsurface, but most are unnamed. Strictly speaking, Ocala Limestone is a Florida stratigraphic unit. It is distributed across Florida and parts of Georgia, but is seldom exposed at the surface (at least in Florida or ...

Geolex — Ellaville publications

At the type locality and both reference sections, the Ellaville gradationally and conformably underlies the Suwannacoochee Dolostone and overlies the Ocala Group or equivalent, though the lower contact in outcrop is not clear. Age is early Oligocene (Vicksburgian) based on stratigraphic position and correlation with the Glendon Limestone.

Technical Memorandum MEMORANDUM

Oligocene age Suwannee Limestone, the upper Eocene age Ocala Limestone, and the middle Eocene age Avon Park Formation (Table 1). In northern Pasco and Hernando counties, the Suwannee Limestone is the uppermost unit. Further north in Citrus County, the Ocala Limestone

Geohydrology of the Cross-Florida Barge Canal area, with ...

From near Ocala northeastward, the canal channel will replace much of the natural channel of the Oklawaha River, and will be excavated into beds of the so-called shallow sand aquifer of Miocene and younger age, which overlies limestone of the Floridan aquifer.

Geologic Features of Areas of Abnormal Radioactivity South ...

The Ocala limestone of late Eocene age is the oldest formation exposed in the region, and exposures are scarce. Beds a few feet thick crop out in some sinkholes, but the formation is best exposed in abandoned quarries in the area covered by plate 12, and in active quarries a …

GEOLOGY OF FLORIDA LIMESTONE AND SAND DEPOSITS …

can be found in limestone formations. Figure 1: Limestone outcrop depicting extremes in rock quality and porosity (Source: FGS) The rock exposed at or near the surface in Florida is less than 40 million years in age; some of the most valuable reserve areas for aggregate rock in the state are in

Ocala Limestone (GAEOo;1)

Geologic unit mapped in Georgia: Generally covered with Oligocene and Eocene residuum (Flint River Formation of Cooke, 1939); includes up-dip area, Tivola Limestone of Connell (1955). (*)- outcrops of Ocala Limestone on Dougherty Plain.

The age of the Ocala limestone (eBook, 1915) [WorldCat ]

The age of the Ocala limestone. [C Wythe Cooke; Geological Survey (U.S.),] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library. Create lists, bibliographies and reviews: or Search WorldCat. Find items in libraries near you ...