Microfacies, Sedimentary environment and Sequence stratigraphy of Anarak section (Late Devonian-Early Carboniferous), central Iran
Subject Areas : Geoscience Fields in relation with Petroleum GeologyٍٍElahe Sattari 1 , Hosyen vaziri-Moghadam 2 , Ali Bahrami 3 , Ali Taheri 4 , sandra kaiser 5 , Peter Koneigshof 6
1 - دانشگاه اصفهان
2 - دانشگاه اصفهان
3 - دانشگاه اصفهان
4 - shahrood
5 - موزه تاریخ طبیعی اشتوتگارت
6 - موزه تاریخ طبیعی
Keywords: Carbonate ramp Sequence stratigraphy, conodont , Bahram Formation , Shishtu2 Formation. ,
Abstract :
Anarak section in northeast Isfahan, central Iran is evaluated regarding to sedimentary environment and sequence stratigraphy. Field studies and micro-facies analysis led to the identification of 12 micro-facies related to the open marine, the shoal, the lagoon and the tidal flat environments. Micro-facieses gradual change, lack of calciturbidite and lack of expanded barrier reef indicate the deposition of a sedimentary interval in a homoclinal ramp environment. Two type 3 sequences were identified by sequence stratigraphic study. Both of these sequences are separable TST and HST packages. The age of first sequence is Late Devonian (Bahram Formation) and its thickness is 42.3 meters and the second sequence with a thickness of 70.7 meters is Late Devonian-Early Carboniferous (Upper part of Bahram Formation and Shishtu2 Formation). The sequence boundary between first and second sequences is the second type boundary due to the lack of evidence for exposure.
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