ESTONIAN ACADEMY
PUBLISHERS
eesti teaduste
akadeemia kirjastus
PUBLISHED
SINCE 1984
 
Oil Shale cover
Oil Shale
ISSN 1736-7492 (Electronic)
ISSN 0208-189X (Print)
Impact Factor (2020): 0.934

PALYNOFACIES ANALYSIS OF NAOKELEKAN FORMATION, NORTHERN IRAQ; pp. 318–336

Full article in PDF format | https://doi.org/10.3176/oil.2019.2.05

Authors
JAN ISAMEL, HÜKMÜ ORHAN

Abstract

Palynofacies analysis of 38 rock samples of the Late Oxfordian-Early Kimmeridgian Naokelekan Formation from two exploratory wells and two outcrops in northern Iraq was performed. All samples taken from outcrops in Duhok and Sulaymaniyah provinces and well Bj-1 in northern Iraq were classified as palynofacies Type I (PF-1), which comprises mainly amorphous organic matter (AOM). The samples were deposited in a distal suboxic-anoxic basin and their organic matter (OM) is considered as Type II kerogen. Samples from well Jk-1 were interpreted as palynofacies Type II (PF-2) having mixed AOM and phytoclasts. These samples were deposited in a distal dysoxic-anoxic shelf basin and their organic matter is classified as Type II kerogen.


References

1.       Wetzel. R., Morton, D. M. Naokelekan Formation. In: Lexique Stratigraphic International (Bellen, R. C. van, Dunnington, H. V., Wetzel, R., Morton, D.M., eds.), Vol. III, Asia, Fascicule 10, Iraq. Paris, 1950, 211215 (in French).

2.       Tyson, R. V. Sedimentary Organic Matter. Organic Facies and Palynofacies. Chapman and Hall, London, 1995, 615 pp.
https://doi.org/10.1007/978-94-011-0739-6

3.       Buday, T. The Regional Geology of Iraq: Stratigraphy and Paleogeography, Vol. 1. Dar Al-Kutub Publishing House, University of Mosul, Mosul, Iraq, 1980, 445 pp.

4.       Jassim, S. Z., Buday, T. Tectonic Framework. In: Geology of Iraq (Jassim, S. Z, Goff, J. C., eds). Dolin, Prague and Moravian Museum (Brno), Czech Republic, 2006, 45–55

5.       Jassim, S. Z., Goff, J. C. Geology of Iraq. Dolin, Brno, Prague and Moravian Museum, 2006, 352 pp.

6.       Tyson, R. V. Palynofacies analysis. In: Applied Micropaleontology (Jenkins, D. G., ed.). Kluwer Academic Publishers, The Netherlands, Amster­dam, 1993, 153–191.
https://doi.org/10.1007/978-94-017-0763-3_5

7.       Combaz, A. Les palynofaciès. Revue de Micropalèontologie, 1964, 7(3), 205–218 (in French).

8.       Batten, D. J. Palynofacies and paleoenvironmental interpretation. In: Palyno­logy: Principles and Applications (Jansonius, J., McGregor, D. C., eds.), Vol. 3. American Association of Stratigraphic Palynologists Foundation, College Station, TX, 1996, 1011–1064.

9.       Thompson, C. L., Dembicki Jr., H. Optical characteristics of amorphous kerogens and the hydrocarbon-generating potential of source rocks. Int. J. Coal Geol., 1986, 6(3), 229–249.
https://doi.org/10.1016/0166-5162(86)90003-0


Back to Issue