Volume 10, Issue 2 (2-2010)
2010, 10(2): 709-728 |
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Abrari N. Sequence stratigraphy of the Gurpi Formation in southwest of Firozabad area(Aghar anticline). Journal title 2010; 10 (2) :709-728
URL: http://jsci.khu.ac.ir/article-1-1450-en.html
URL: http://jsci.khu.ac.ir/article-1-1450-en.html
Abstract: (6019 Views)
The study of planktonic foraminifera of the Gurpi Formation in southwest of Firozabad(Aghar anticline) area led to recognition of eight biozones that include: Dicarinella asymetrica Zone (Santonian to Earliest Campanian), Globotruncanita elevata Zone (Early Campanian), Globotruncana ventricosa Zone (Mid to Late Campanian), Radotruncana calcarata Zone (Late Campanian), Globotruncanella havanensis Zone (Late campanian), Globotruncana aegyptiaca Zone (Late to Latest Campanian), Gansserina gansseri Zone (Latest Campanian to Early Maastrichtian), Contusotruncana contusa and Racemiguemblina fructicosa Zone (Early to Late Maastrichtian). In study area, the Gurpi Formation overlies the Ilam Formation with erosional disconformity and is overlain by the Pabdeh Formation with erosional disconformity. Based on distribution of morphotype groups of planktonic foraminifera, planktonic foraminifera per bentic foraminifera ratio(P/B) and content of carbonate, seven third-order sequences are recognized. Sequence boundries of Gurpi Formation with Ilam Formation at the base and with Pabdeh Formation at the top, are SB1, but other sequence boundries are SB2.
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