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IJSTR >> Volume 7 - Issue 6, June 2018 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Petrographical Studies Of Okeluse Limestone

[Full Text]

 

AUTHOR(S)

Boluwade E. A., Nenuwa O.B. and Ogunleye O.

 

KEYWORDS

Aragonite, Casts, Limestone, Matrix, Micrite, Mollusc, Petrographically

 

ABSTRACT

Five samples of limestone collected from different locations at the Okeluse forest reserve, were petro graphically studied under the microscope at x80 magnification. Samples showed shell fragments of echinoderm, brachiopods surrounded by micrite envelope which indicate a low energy environment of formation .The presence of brachiopods indicate that the Okeluse Limestone belongs to the group of rocks of ancient marine of the Palaeozoic-Mesozoic era. Mudstone matrix in some samples could have caused the greyish colouration of the Okeluse Limestone since the detritus (sand or mud) was excreted by the constituent organism. Bivalves and gastropods are identified. They are made of aragonite and preserved as casts.

 

REFERENCES

[1] Fayose (2002): Invertebrate Paleontology (A Laboratory Manual) Abiosa Enterprises Limited, Ibadan, Nigeria, 3rd Edition. 94pp.

[2] Greensmith J.T. (1978): Petrology of Sedimentary Rocks. George Allen & Unwin Ltd, 6th Edition. 241pp.

[3] David M.R. and Steven M.S. (1971): Principles of Paleontology. Freeman and Company San Francisco. 2nd Edition. 267pp.