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RISIsotopic chemostratigraphy of the Permian-Triassic boundary in Zagros Mountains, Aligoudarz, Iran
Lithological sequences from the Permian-Triassic transition
in Middle Zagros, Iran are composed of the Dalan Formation
limestone with shelly fauna, Khaneh Kat Formation with two
stromatolite units at the lowermost part as well...
High resolution stratigraphy and extinction patterns of the Ammonoidea at the Permian-Triassic boundary of NW Iran
The classical Permian-Triassic (P-Tr) boundary sections in the vicinity of Julfa (NW Iran) have high potential for the study of the end-Paleozoic extinction event. The lithostratigraphic record of the P-Tr boundary beds in the Julfa area is rather...
Lithostratigraphy and carbonate microfacies across the Permian–Triassic boundary near Julfa (NW Iran) and in the Baghuk Mountains (Central Iran)
Permian–Triassic boundary sections in the Julfa (NW Iran) and Abadeh (Central Iran) regions display
a succession of three characteristic rock units, (1) the Paratirolites Limestone with the mass extinction horizon at its top, (2...
Geochemistry of shales of the Qadir Member (Nayband Formation; Upper Triassic), East Central Iran (Tabas Block): Implications for provenance and paleogeography
The Upper Triassic shale of the Qadir Member of the Nayband Formation, East Central Iran has been analyzed geochemically to evaluate provenance and paleogeography. The Qadir Member in the Parvadeh Coal Mine section is 450 meters thick, and includes...
Carbonate microfacies and δ13C and δ15N systematics across the Permian-Triassic boundary near Julfa (NW Iran)
Investigation of the sedimentary and geochemical characteristics of the Permian-Triassic (P-Tr) boundary beds is one approach to the study of the most dramatic extinction event in Earth’s history. In a new multidisciplinary project, carbon isotope...
Stable carbon and nitrogen isotopes of Permian-Triassic Boundary sections in the regions of Julfa (NW Iran) and Abadeh (Central Iran)
The Permian-Triassic (P-Tr) boundary sections in the regions of Julfa (NW Iran) and Abadeh (Central Iran) have high potential for the study of the most dramatic extinction event in Earth’s history. As part of a multidisciplinary project, we have...
Morphological evolution and extinction patterns of the Ammonoidea at the Permian-Triassic boundary of Iran
The classical Permian-Triassic (P-Tr) boundary sections in the vicinity of Julfa (NW Iran) and in the Baghuk Mountain area (Central Iran) have high potential for the study of the end-Palaeozoic extinction event. The lithostratigraphic record...
Early Triassic microbialites and carbonate factory changes across the Permian-Triassic boundary near Julfa (NW Iran) and Abadeh (Central Iran)
Permian-Triassic boundary sections in the regions of Julfa (NW Iran) and Abadeh (Central Iran) display three characteristic rock units: (1) the Paratirolites Limestone (4-5 m thick) with the mass extinction horizon (P-Tr extinction event) at the top...
Problems of stratigraphic correlation of the Permian-Triassic transitional beds in the Transcaucasus and Central Iran
Permian–Triassic boundary sections in Iran belong to the best exposures of this important time interval worldwide and work as a standard for the transition beds in the Tethyan Realm. Increasing interest in these sections helped to solve a number...
Limitations and opportunities for Permian-Triassic carbonate-carbon isotope stratigraphy posed by microbial-controlled diagenetic mineral additions
traversing the Permian-Triassic boundary in marine carbonate-bearing sequences of Iran and South China.
We observe, 1) a global first-order trend towards depleted carbon isotope values across the Permian-Triassic transition, 2) second-order carbon...