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

Chapter Three Biostratigraphy
There is no any evidence of planktonic foram occurrence except of some larger
foraminifera and smaller benthonic till the interval of Tanjero -- Red Bed
transition unit which characterized by the presence of reworked larger forams.
The benthonic foraminifera identified from the uppermost part of Tanjero
Formation are: Praebulimina quadrata, Oolina apiculata Reuss, Nodosaria
minor Hantken, Globorotaloides sp. Spiroplectamina israelskyi Hillebrandt,
Lenticulina muennsteri,Dorothia crassa, D. smokynensis Wall, D. retusa,
Omphalocyclus macroporus, Orbitoides medius (d Archiac), O. tissoti
Shlumberger, Loftusia elongata Brady, L. morgani Douville, L. persica Brady, L.
minor Coxi,
As defined above, the present Biozone (CF3) is correlatable with the Zone
recorded by (Li and Keller, 1998a,b), (Abramovich and Keller,2003) in DSDP
Site 525A. Abramovich et al., (2002) Madagascar. (Keller et al., 1995) from
Tunisia. (Keller, 2004) Eastern Tethys. (Samir, 2002), (Keller, 2002), (Obaidalla,
005) Egypt. (Sharbazheri, 2007) NE Iraq, and it is correlated with the middle
part of Abathomphalus mayaroensis zone recorded in the Northeast of Iraq
(Abawi et al., 1982, and Abdel-Kareem,1986), in Italy (Premoli Silva and Sliter,
1995, 1999) (Premoli Silva et al., 1998), (Abdel-Kareem & Samir, 1995) Egypt,
and (Robaszynski et al., 1984) (Caron, 1985) general.(Figs. 3.12 - 3.14) .
The age estimation of this biozone by (Li and Keller, 1998a), records the
Middle Late Maastrichtian, with the time span of (66.83Ma) to (65.45Ma)
estimating absolute ages based on magnetochron ages. (1380 Ky) estimating
absolute ages based on magnetochron ages with 66ky/m low rate of deposition
in Gali section. (60 ky/m) low rate of deposition in Qulka section Dokan area.(46
ky/m) low to moderate rate of sedimentation in Sirwan valley.(Figs. 3.12 & 3.13)
Age: Middle Late Maastrichtian.
3.2.1.7- Pseudoguembelina palpebra Interval Zone (CF 2)
This Zone (CF2) defines the interval between the LAD of Gansserina
gansseri at the base to the FAD of Plummerita hantkeninoides at the top. Li &
Keller, (1998 a and b) introduced this zone from DSDP Site 525A and Tunisia,
respectively. At Gali section in Smaquli area, the Zone (CF2) covers spans 24
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