Fossiliferous limestone

Fossiliferous limestone is a general term for any carbonate stone in which the fossil stmcture is visually evident. 

Oyster shell, another of the many forms of fossiliferous limestones, is a relatively pure source of CaCO. ... 

M L Gr, sublithographic, fossiliferous limestone galena mineralization in fractures (nearshore marine)... 

Figure 5.4. Classification of mixed siliciclastic-carbonate sediments proposed by Mount (1985). It is an unfolded tetrahedron in which the apices are siliciclastic sand, carbonate allochems, siliciclastic mud, and carbonate micrite. For comparison with Folk s (1962) classification, the classification of pure fossiliferous limestone is also plotted.

The Leadville Limestone is part of a carbonate shelf northwest of the Sawatch Uplift (Fig. 1). In Lime Creek, the Leadville is a massive to well-bedded, fossiliferous limestone... 

Nodular phosphorites are well known from continental shelves, mostly at depths of from 100 to 500 m, which are believed to be replacements of fossiliferous limestone and other sediments by francolite, essentially in situ... 

Marine shelf facies association. Laterally continuous, dark grey to black fissile shales, with interbedded siltstones and shales and infrequent thin fossiliferous limestones. 

The basal part of the Ocala Limestone consists of about 29 ft of white, coarsely crystalline, fossiliferous limestone. This sequence is overlain by about 43 ft of dense argillaceous, fossiliferous limestone interbedded with thin clay laminae and about 5 to 8 ft of soft, chalky limestone. The void spaces within the argillaceous limestone have been partially filled with clay, and the unit has low permeability. 

Fossiliferous limestone is one which contains fossils which are readily visible to the naked eye. 

Schmidt et al. (1978) considered the Gorecki Felsite in the Schmidt Hills to be interbedded with the rocks of the Patuxent Formation and Rowell et al. (1994) asserted emphatically that the age of the Patuxent Formation in the Schmidt Hills is early Paleozoic and not Neoproterozoic because the felsite at Mount Gorecki contains fragments of fossiliferous limestone derived from the Nelson Limestone ... 

Biochemical sedimentary rocks consist of sediments formed from the remains or secretions of organisms. They include fossiliferous limestone, coquina (limestone composed of shells and coarse shell fragments), chalk (porous, fine-textured variety of limestone composed of calcareous shells), lignite (brown coal), and bituminous (soft) coal. 

The sand grades upward into an 11-foot-thick zone of fossiliferous, sandy limestone interbedded with thin lenses of unconsolidated quartz sand. This part of the sequence was deposited in a shallow marine environment (19). 

Calcium carbonate in its most common form is limestone and occurs naturally throughout the world as fossiliferous deposits composed of shells, teeth and bones from prehistoric organisms. Calcium carbonates used in the papermaking process fall into three groups chalk, ground (GCC), or precipitated (PCC). 

Fig. 8.7 The Patuxent Range forms the most southerly part of the Pensacola Mountains. It consists of nunataks composed of the Patuxent Formation (as revised by RoweU et al. 2001) which forms the local basement complex. The metasedimentary rocks of the Patuxent Formation are isoclinally folded and consist of a repetitious sequence of graywacke and slate. These rocks are younger than the fossiliferous Nelson Limestone which is late Middle Cambrian. The map area also contains outcrops of Devonian sandstone south of the Patuxent Range and of Permian siltstone and shale of the Pecora Formation in the Pecora Excarpment (Adapted from Schmidt and Ford 1969 with information from Rowell et al. 2001)...

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