biostratigraphy and paleoecology of cretaceous/tertiary boundary in ...
biostratigraphy and paleoecology of cretaceous/tertiary boundary in ...
biostratigraphy and paleoecology of cretaceous/tertiary boundary in ...
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Chapter Five<br />
Conclusion<br />
Paleontologically there were no significant evidences <strong>of</strong> fossils record <strong>in</strong> this<br />
<strong>in</strong>terval <strong>of</strong> lower most part <strong>of</strong> Gercus Formation <strong>in</strong> which six samples were<br />
studied for both foram<strong>in</strong>iferal <strong>and</strong> palenomorphs. Consequently it is convenient to<br />
mention that the geologic age <strong>of</strong> the Gercus Formation <strong>in</strong> Smaquli area, <strong>in</strong>ferred<br />
conformable gradditional nature, <strong>and</strong> may began from the Danian (Lower<br />
Paleocene) <strong>in</strong>stead <strong>of</strong> Middle Eocene age.<br />
8- The Tanjero Formation was completely studied <strong>in</strong> Smaquli area which<br />
represented by 72m. And subdivided lithologically <strong>in</strong>to three dist<strong>in</strong>ct units based<br />
on field observation <strong>and</strong> lithologic characters. Chronostratigraphically represents<br />
Late Maastrichtian Epoch.<br />
9- The total number <strong>of</strong> planktonic <strong>and</strong> benthonic foram<strong>in</strong>iferal species was<br />
identified from all studied sections as follow:<br />
A - Gali section 82 planktonic species were belong<strong>in</strong>g to 23 Genus <strong>in</strong> Shiranish-<br />
Tanjero transition unit but <strong>in</strong> Tanjero Formation 21 planktonic species were<br />
belong<strong>in</strong>g to 14 Genus <strong>in</strong> Kolosh Formation, while 66 benthonic species were<br />
belong<strong>in</strong>g to 38 Genus <strong>in</strong> Shiranish-Tanjero transition unit <strong>and</strong> Tanjero<br />
Formation, 50 benthonic species are belong<strong>in</strong>g to 30 Genus <strong>in</strong> Kolosh<br />
Formation.<br />
B- Qulka section 53 planktonic species were belong<strong>in</strong>g to 18 Genus <strong>in</strong> Tanjero<br />
Formation <strong>and</strong> 16 planktonic species are belong<strong>in</strong>g to 9 Genus <strong>in</strong> Kolosh<br />
Formation, but 52 benthonic species were belong<strong>in</strong>g to 36 Genus <strong>in</strong> Tanjero<br />
Formation <strong>and</strong> 43 benthonic species are belong<strong>in</strong>g to 31 Genus <strong>in</strong> Kolosh<br />
Formation.<br />
C - Sirwan section 62 planktonic species were belong<strong>in</strong>g to 20 Genus <strong>in</strong><br />
Tanjero Formation <strong>and</strong> 18 planktonic species are belong<strong>in</strong>g to 11 Genus <strong>in</strong><br />
Kolosh Formation, but 58 benthonic species was belong<strong>in</strong>g to 36 Genus Tanjero<br />
Formation <strong>and</strong> 52 benthonic species are belong<strong>in</strong>g to 32 Genus <strong>in</strong> Kolosh<br />
Formation.<br />
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