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

3.2.1.4- Pseudotextularia intermedia Interval Zone (CF5)……………………………………………………. 55
3.2.1.5- Racemiguembelina fructicosa Interval Zone (CF4)………………………………………………….. 60
3.2.1.6- Pseudoguembelina hariaensis Interval Zone (CF3)…………………………………………………. 63
3.2.1.7- Pseudoguembelina palpebra Interval Zone (CF2)…………………………………………………… 66
3.2.1.8- Plummerita hantkeninoides Total Range Zone (CF1)……………………………………………….. 68
3.2.2- Biostratigraphy of the Early Paleocene Formations………………………………………………….. 71
3.2.2.1- (P0) Gumbelitria cretacea Interval Zone........................................................................................ 71
3.2.2.2- ( Pá) Parvularugoglobierina eugubina Total Range Zone............................................................ 72
3.2.2.3- ( Pá & P0 ) in Dokan and Sirwan valley.......................................................................................... 76
3.2.2.4- (P1) Parvularugoglobigerina eugubina- Praemurica uncinata Interval Zone…………………… 77
3.2.2.4.1- (P1a) Parvularugoglobierina eugubina – Subbotina triloculinoides Interval Subzone.......... 78
3.2.2.4.2- (P1b) Subbotina triloculinoides- Globanomalina compressa/Praemurica inconstans
Interval Subzone........................................................................................................................................... 79
X
4- Chapter Four:
Depositional environment and paleoecology
86
4.1-Preface .................................................................................................................................................... 86
4.2- Planktonic species diversity or species richness ……………………………………………………… 87
4.3- Signor- Lipps Effect............................................................................................................................... 89
4.4- Planktic/Benthic foraminiferal ratio and Benthic Foraminiferal Assemblage………………………. 90
4.4.1- Maastrichtian...................................................................................................................................... 93
4.4.2- Paleocene........................................................................................................................................... 100
4.5- The Nature of Maastrichtian/Paleogene boundary………………………………………………………. 103
4.6- Method of graphical correlation…………………………………………………………………………….. 105
4.7- Sedimentation rate around Cretaceous/Tertiary boundary……………………………………………. 108
6- CHAPTER FIVE
conclusions
112
References
122
Plates
List of Figures and Table
Figure No. Title Page
Fig (1.1) Location and Geological map of the studied area (modified from Sissakian, 2000) 4
Fig (1.2) General stratigraphy of Cretaceous/Tertiary boundary at the studied sections 5