Naslov
Biostratigraphy and sedimentology of the Campanian and Maastrichtian sediments in Palmyra-1 well, Palmyrides, Syria

Autori
Stanković, Damir ; Premec-Fuček, Vlasta ; Hernitz Kučenjak, Morana ; Marić-Đureković, Željka ; Ivak, Patricija ; Slavković, Renata ; Barbić, Zdenka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts book of the 22nd IAS Meeting of Sedimentology / Vlahović, Igor - Zagreb, 2003, 201-201

Skup
22nd IAS Meeting of Sedimentology

Mjesto i datum
Opatija, Hrvatska, 17.09.2003. - 19.09.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
foraminifera; biostratigraphy; sedimentology; Campanian; Maastrichtian; Syria

Sažetak
Biostratigraphic and sedimentological interpretation of the Campanian and Maastrichtian sequence penetrated in the Palmira-1 well, Palmyrides region of Syria, have been carried out. The succesion studied (15–102 m) was deposi-ted within Palmyridian basin (Shiranish formation). Sediments are composed of marls to calcareous marls and silty–argillaceous limestones of mudstone/wackestone type, sporadically with intercalation of the fine crystalline to medium crystalline dolomites as well as quartz arenites with carbonate cement. In the upper part of the interval prevail limestones of mudstone/wackestone type and peloidal limestones with partially limonitized cements.Occasionally there are occurrences of before mentioned dolomites and sandsto-nes. These limestones gradually change into marls rich in planktonic and small benthonic foraminifera. Interval 75–80 m is enriched with foraminiferal carbonate shells and it is in accordance of the chemical analyses which show high percent of carbonate component (70%). Mic- ropaleontological investigation have been focused on the vertical distribution, diversity and composition of the planktonic and small benthonic foraminiferal assembla-ges. Upper Maastrichtian sediments (interval 15–75 m) are documented by following index species of planktonic foraminifera Abathomphalus mayaroensis, Gansserina gans-seri, Globotruncanita stuarti, Globotruncanella pschadae and G. petaloidea. In this assemblages planktonic fora-miniferal species Globotruncanella havanensis, Rugoglo-bigerina rugosa, Pseudotextularia elegans, Hedbergella holmdelensis, Pseudoguembelina costulata, Heterohelix spp. as well as benthonic foraminiferal species Gaudryina laevigata, Bolivinoides dracco, Bolivina incrassata and other have been identified. Campanian to Lower Maastrichtian sediments (inter-val 75–102 m) contain also rich and well preserved foraminiferal assemblages with following planktonic species Globigerinelloides prairiehillensis, G. bollii, Con-tusotruncana fornicata, Globotruncanita stuartiformis, Globotruncana arca, Globotruncanella petaloidea, G. havanensis, Rugoglobigerina rugosa, Archaeoglobigerina blowi, Pseudotextularia elegans, Heterohelix spp. and benthonic foraminiferal species Bolivinoides miliaris, Oridorsalis umbonatus, Gyroidinoides globosus, Bolivina incrassata and others. Rich and high diversified foraminiferal association and lithological characteristics of the Campanian and Maastrichtian sediments suggest Mediterranean bioprovin-ce with tropical to subtropical climate and deposition in outer shelf to deeper marine environment.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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