Palynofacies Analysis and Hydrocarbon Generating Potential of Dokan and Gulneri Formations (Upper Cretaceous) from Selected Sections in Northern Iraq A THESIS SUBMITTED TO THE COLLEGE OF SCIENCE, UNIVERSITY OF SULAIMANI, IN PARTIAL FULFILMENT OF THE REQUIRMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN GEOLOGY
BY
RAZAWA HAMARASHED ABDULRAHMAN SARRAJ B.Sc. IN GEOLOGY/1998
UNDER SUPERVISION OF
Dr. DLEAR H. BABAN
December,2006
Sarmawaz, 2706 Ku.
They said: Glory be to Thee! We have no knowledge but that which Thou hast taught us; surely Thou art the Knowing, the Wise
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Table ( 4-1 ) Some major controls on TOC content of marine sediments ,after ( Tyson, 1995). --------------------------------------------------------------------------------------------------------------------------------------Variables
Correlation with TOC
--------------------------------------------------------------------------------------------------------------------------------------1. Primary Productivity: a. Mean Productivity
(+)
b. New Production
(+)
c. Production half life
(−)
2. Water depth 3. Plankton type
(−) a. Mineralized ( siliceous or calcareous)
(−)
b. Organic –walled
(+)
4. Allochthonous organic matter inputs: a. Terrestrial
(+)
b. Marine 5. Sediment grain size:
(+)
a. Mean
(−)
b. % Silt + clay
(+)
6. Sediment accumulation rate : a. Biogenic component
(+, pars)
b. Siliciclastic component
(−)
-1 7. Mean dissolved oxygen of bottom water: a. > 1.0 ml l
( + O – TOC )
-1 b. < 0.2- 1.0 ml l
(− O + TOC)
Correlation between the above controls 1 and 2 (−)
2 and 4 (−)
3a and 5b (+)
4a and 5a (+)
1 and 3 (+)
2 and 5 (−)
3a and 6a (+)
4a and 6b (+) (Continue)
1 and 6a (+)
2 and 6(−)
1 and 7 (−)
2 and 7( ± )
Other variables interacting with the above: A. Climate
( 1, 2, 3, 4, 5, 6, 7)
B. Watermass circulation
( 1, 3, 4, 5, 6, 7)
C. Sea floor topography
( 1a, 2, 4, 5, 6, 7)
D. Distance from fluvio- deltaic inputs
( 1a, 3, 4a, 5, 6b)
E. Tectonic regime
( 2, 4a, 5, 6b)
-Note that all these ‘ other variables’ are also strongly interrelated. Variables B,C and D, in conjuction with factor 2(above) are the consequences of ‘sea-level.’
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PLATE- 1
PLATE- 2
PLATE - 3
PLATE-4
PLATE- 5
PLATE- 6
PLATE- 7
PLATE- 8
PLATE- 9
Figure-1: Amorphous Organic Matter type A.
Figure-2: Amorphous Organic Matter type B.
PLATE-10
Figure-1: Amorphous Organic Matter type C.
Figure-2: Amorphous Organic Matter type D.
PLATE- 11
Figure-1: Palynofacies -1 (P.F. 1)
Figure-1: Palynofacies - 2 (P.F. 2).
PLATE- 12
Figure-1: Palynofacies -3 (P.F. 3)
Figure-2: Palynofacies -4 (P.F.4)
PLATE - 13
TAI = 2 ,
Dokan Section