biostratigraphy and paleoecology of cretaceous/tertiary boundary in ...

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Chapter Two Lithostratigraphy Fig (2.7) Schematic geologic cross section of the Qishlagh locality in Qala Cholan area 32
Chapter Two Lithostratigraphy Fig (2. 8) (a) showing reworked fossils of large foram. of Loftusia, Omphalocyclus and Orbitoides in the transitional zone between Tanjero and Red Bed Series. (b) Showing the conglomerate bed of 3 m. thick, which contain reworked and dwarfed fossils at the base of Red Bed Series. 2.5 - Lithostratigraphy of Qulka section (Dokan area) The measured part of studied section covered 163m of upper part of Tanjero Formation and 54m from the lower part of Kolosh Formation. The detailed stratigraphic section is shown in Figs (2.9, 2.10, & 2.11) on both side of conglomerate bed, which formerly supposed to be the contact or key marker for Cretaceous/Tertiary boundary in the studied area by different authors. The well exposed rocks of studied section of Tanjero Formation at Qulka section represented by 63m of olive green to pale grey marl and bluish white calcareous marl intervened by streak of limestone veins and 3m dark grey to olive green soft, friable sandstone occasionally with siltstone, clay ball and pillow structure at the middle part of this interval. Followed by 59m of interfingering Aqra Limestone unit which consists of well bedded ridge forming recrystalized pale grey to yellowish limestone and sandstone to silty limestone occasionally dolomitized intercalated by thin beds of shale, calcareous shale, marl and sandstone beds through this interval. The Aqra Limestone interval in this section varies from its equivalent at Qishlagh and Kato sections, by very low frequency of macrofossils and short lateral distribution. The interfingering Aqra limestone unit overlained by 41m of Tanjero flysch type emergence again by alternation of olive green to dark grey calcareous shale, marl, thin bedded sandy limestone ,friable weathered sandstone, some pebbly sandstone bluish 33
Page 1: BIOSTRATIGRAPHY AND PALEOECOLOGY OF
Page 4 and 5: IV Dedicated: To My Wife My Daughte
Page 6 and 7: VI Abstract The Cretaceous / Tertia
Page 8 and 9: VIII successions from the upper par
Page 10 and 11: 3.2.1.4- Pseudotextularia intermedi
Page 12 and 13: XII Table No. Title Page Table (3.1
Page 14 and 15: XIV Fig (4.11): Sedimentation rate
Page 16 and 17: Chapter one Introduction such as pl
Page 18 and 19: Chapter one Introduction Fig. (1.1)
Page 20 and 21: Chapter one Introduction lithologic
Page 22 and 23: Chapter one Introduction The Shiran
Page 24 and 25: Chapter one Introduction Abdel-Kire
Page 26 and 27: Chapter one Introduction The Kolosh
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Page 30 and 31: Chapter one Introduction a- Globotr
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Chapter Three Biostratigraphy Fig (
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Chapter Three Biostratigraphy Fig (
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Chapter Four Depositional Environme
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Chapter Five CHAPTER FIVE Conclusio
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Chapter Five Conclusion Paleontolog
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Chapter Five Conclusion (Late Maast
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Chapter Five Conclusion E- Kato sec
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Chapter Five Conclusion 16- The ter
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REFERENCES Abawi, T. S. Abdel-Kiree
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Northwestern Iraq. Rafidain Journal
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Bandy, O. L., 1967. Cretaceous plan
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limestone from the accretionary pri
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Cretaceous of the south Constantine
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James, G. A. and Wynd, J. G., 1965.
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Kassab, I. I. M., 1975c. Planktonic
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Liu, C. and Olsson, R. K., 1992. Ev
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Molina, E. Arenillas, I. and Arz, J
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Petters, S. W. EL-Nakhal, H. A. and
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Sissakian, V. K., 2000. Geological
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EXPLANATION OF THE PLATES PLATE -1
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PLATE -3 Scale bar represents magni
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PLATE -11 Scale bar represents magn
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PLATE -17 Figs 1- 3 Globotruncana a
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PLATE -19 Figs. 1 Gansserina wieden
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PLATE -21 Figs 1-2 Abathomphalus ma
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PLATE -23 Fig. 1 Globigerinelloides
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