Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq

Imad Mahmood Ghafor

doi:doi:10.11648/j.sr.20140205.16

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Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq

Imad Mahmood Ghafor

Published in Science Research (Volume 2, Issue 5)

Received: 25 September 2014 Accepted: 7 October 2014 Published: 20 October 2014

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Abstract

The investigation is based on a subsurface sequences of bioclastic limestone in Kirkuk area, Northeastern Iraq. These sequences were deposited in a shallow open marine environment during Late Oligocene. Tests of larger foraminifera Lepidocyclina(Nephrolepidina) are abundant in the lower and upper parts of the Baba Formation. Biometric investigations of the Megalospheric forms of Nephrolepidina assemblages from, Bai-Hassan well- 25 section led to recognize three morphometrically defined species by the combination of three parameters, 1- the degree of embracement of the protoconch by the deuteroconch (Factor A), 2- the numbers of accessory auxiliary chambers on the deuteroconch (Factor B), and 3- (Factor C ) which expressed by the protoconch angle( ) formed by the two hypothetical line from the center of protoconch throught the outer attachment points of the deuteroconch walls with protoconch.

Published in	Science Research (Volume 2, Issue 5)
DOI	10.11648/j.sr.20140205.16
Page(s)	111-118
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Late Oligocene, Kirkuk Area, Northeast Iraq, Bai-Hassan Well-25, Biometric Analysis

References

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APA Style

Imad Mahmood Ghafor. (2014). Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Science Research, 2(5), 111-118. https://doi.org/10.11648/j.sr.20140205.16

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ACS Style

Imad Mahmood Ghafor. Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Sci. Res. 2014, 2(5), 111-118. doi: 10.11648/j.sr.20140205.16

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AMA Style

Imad Mahmood Ghafor. Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Sci Res. 2014;2(5):111-118. doi: 10.11648/j.sr.20140205.16

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@article{10.11648/j.sr.20140205.16,
  author = {Imad Mahmood Ghafor},
  title = {Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq},
  journal = {Science Research},
  volume = {2},
  number = {5},
  pages = {111-118},
  doi = {10.11648/j.sr.20140205.16},
  url = {https://doi.org/10.11648/j.sr.20140205.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sr.20140205.16},
  abstract = {The investigation is based on a subsurface sequences of bioclastic limestone in Kirkuk area, Northeastern Iraq. These sequences were deposited in a shallow open marine environment during Late Oligocene. Tests of larger foraminifera Lepidocyclina(Nephrolepidina) are abundant in the lower and upper parts of the Baba Formation. Biometric investigations of the Megalospheric forms of Nephrolepidina assemblages from, Bai-Hassan well- 25 section led to recognize three morphometrically defined species by the combination of three parameters, 1- the degree of embracement of the protoconch by the deuteroconch (Factor A), 2- the numbers of accessory auxiliary chambers on the deuteroconch (Factor B), and 3- (Factor C ) which expressed by the protoconch angle( ) formed by the two hypothetical line from the center of protoconch throught the outer attachment points of the deuteroconch walls with protoconch.},
 year = {2014}
}

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TY  - JOUR
T1  - Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq
AU  - Imad Mahmood Ghafor
Y1  - 2014/10/20
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DO  - 10.11648/j.sr.20140205.16
T2  - Science Research
JF  - Science Research
JO  - Science Research
SP  - 111
EP  - 118
PB  - Science Publishing Group
SN  - 2329-0927
UR  - https://doi.org/10.11648/j.sr.20140205.16
AB  - The investigation is based on a subsurface sequences of bioclastic limestone in Kirkuk area, Northeastern Iraq. These sequences were deposited in a shallow open marine environment during Late Oligocene. Tests of larger foraminifera Lepidocyclina(Nephrolepidina) are abundant in the lower and upper parts of the Baba Formation. Biometric investigations of the Megalospheric forms of Nephrolepidina assemblages from, Bai-Hassan well- 25 section led to recognize three morphometrically defined species by the combination of three parameters, 1- the degree of embracement of the protoconch by the deuteroconch (Factor A), 2- the numbers of accessory auxiliary chambers on the deuteroconch (Factor B), and 3- (Factor C ) which expressed by the protoconch angle( ) formed by the two hypothetical line from the center of protoconch throught the outer attachment points of the deuteroconch walls with protoconch.
VL  - 2
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Author Information

Imad Mahmood Ghafor

Department of Geology School of Science, Faculty of Science and Scientific Education, Sulaimani University—Iraqi Kurdistan Region.

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APA Style

Imad Mahmood Ghafor. (2014). Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Science Research, 2(5), 111-118. https://doi.org/10.11648/j.sr.20140205.16

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ACS Style

Imad Mahmood Ghafor. Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Sci. Res. 2014, 2(5), 111-118. doi: 10.11648/j.sr.20140205.16

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AMA Style

Imad Mahmood Ghafor. Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq. Sci Res. 2014;2(5):111-118. doi: 10.11648/j.sr.20140205.16

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@article{10.11648/j.sr.20140205.16,
  author = {Imad Mahmood Ghafor},
  title = {Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq},
  journal = {Science Research},
  volume = {2},
  number = {5},
  pages = {111-118},
  doi = {10.11648/j.sr.20140205.16},
  url = {https://doi.org/10.11648/j.sr.20140205.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sr.20140205.16},
  abstract = {The investigation is based on a subsurface sequences of bioclastic limestone in Kirkuk area, Northeastern Iraq. These sequences were deposited in a shallow open marine environment during Late Oligocene. Tests of larger foraminifera Lepidocyclina(Nephrolepidina) are abundant in the lower and upper parts of the Baba Formation. Biometric investigations of the Megalospheric forms of Nephrolepidina assemblages from, Bai-Hassan well- 25 section led to recognize three morphometrically defined species by the combination of three parameters, 1- the degree of embracement of the protoconch by the deuteroconch (Factor A), 2- the numbers of accessory auxiliary chambers on the deuteroconch (Factor B), and 3- (Factor C ) which expressed by the protoconch angle( ) formed by the two hypothetical line from the center of protoconch throught the outer attachment points of the deuteroconch walls with protoconch.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - Biometric Analysis of Lepidocyclina (Nephrolepidina) from Baba Formation (Late Oligocene) in Bai-Hassan Well-25, Kirkuk Area, Northeast Iraq
AU  - Imad Mahmood Ghafor
Y1  - 2014/10/20
PY  - 2014
N1  - https://doi.org/10.11648/j.sr.20140205.16
DO  - 10.11648/j.sr.20140205.16
T2  - Science Research
JF  - Science Research
JO  - Science Research
SP  - 111
EP  - 118
PB  - Science Publishing Group
SN  - 2329-0927
UR  - https://doi.org/10.11648/j.sr.20140205.16
AB  - The investigation is based on a subsurface sequences of bioclastic limestone in Kirkuk area, Northeastern Iraq. These sequences were deposited in a shallow open marine environment during Late Oligocene. Tests of larger foraminifera Lepidocyclina(Nephrolepidina) are abundant in the lower and upper parts of the Baba Formation. Biometric investigations of the Megalospheric forms of Nephrolepidina assemblages from, Bai-Hassan well- 25 section led to recognize three morphometrically defined species by the combination of three parameters, 1- the degree of embracement of the protoconch by the deuteroconch (Factor A), 2- the numbers of accessory auxiliary chambers on the deuteroconch (Factor B), and 3- (Factor C ) which expressed by the protoconch angle( ) formed by the two hypothetical line from the center of protoconch throught the outer attachment points of the deuteroconch walls with protoconch.
VL  - 2
IS  - 5
ER  -

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