Results 171 to 180 of about 7,701 (187)

Microfacies analysis and paleoenviornmental interpretation of the Qom Formation, South of the Kashan, Central Iran

Carbonates and Evaporites, 2011
Qom Formation (Oligo-Miocene marine deposits, Central Iran) in the South of Kashan, was studied in order to determine its microfacies and depositional environment. Thirteen microfacies (MF A–M) were distinguished based on petrography, sedimentological features, components distribution and present fauna.
Ebrahim Mohammadi, Amrollah Safari, Hossein Vaziri-Moghaddam, Mohammad-Reza Vaziri, Mehdi Ghaedi   +4 more
openaire   +1 more source

The Early Miocene Qom Formation depositional setting; Northwest of Central Iran Basin

2021
An outcrop of the Qom Formation (Fm.) is considered to determine the depositional setting model in the northwest of Central Iran. Field observations show that the Qom Fm. is composed of thin to thick-beds limestone along with alternation of green marl and argillaceous limestone.
openaire   +1 more source

Depositional environment and constraining factors on the facies architecture of the Qom Formation, Central Basin, Iran

Historical Biology, 2012
In the Central Iran Basin, the mixed carbonate–siliciclastic deposits of the C member of the Qom Formation were deposited on a carbonate platform which is dominated by rhodalgal associations occurring in tropical–subtropical environment. The biogenic rhodalgal association is dominated by bryozoa, coralline red algae, bivalves and echinoids together ...
Mona Seddighi, Hossein Vaziri-Moghaddam, Azizollah Taheri, Ali Ghabeishavi   +3 more
openaire   +1 more source

Foraminiferal Biostratigraphy and Paleoecology of the Southeasternmost Outcrops of the Oligocene Qom Formation, SE Iran

Journal of the Geological Society of India
Abstract The Qom Formation is deposited along more than 1800 km of the NE margin of the Tethyan Seaway in the Oligocene-Early Miocene during the final sea transgression on the Iranian Plate. We present (foraminiferal-based) biostratigraphic data from three exposed sections near the northwestern Jazmurian Lake, as the southeasternmost ...
Ebrahim Mohammadi, Hamed Ameri
openaire   +1 more source

An early Rupelian origin of Titanoderma pustulatum recorded in the Qom Formation, Iran

2019
The Rupelian Uromieh section of the Qom Formation consists of Nummulites-bearing limestones that overlay thick polymictic conglomerates and are overlaid by marlstones rich in planktonic foraminifera. The section was analyzed with the aim to provide a first description of its still unknown coralline algal assemblages, and for depicting its benthic ...
Basso, D, Coletti, G, Bracchi, VA, Yazdi-Moghadam, M   +3 more
openaire   +1 more source

Dolomite distribution’s study of the Lower Miocene deposits (Qom Formation), southeastern Tehran, Central Iran

Carbonates and Evaporites, 2022
Fatemeh Mazaheri, Dariush Baghbani, Jahanbakhsh Daneshian, Farajollah Fayazi, Davood Jahani   +4 more
openaire   +1 more source

Age determination of the Oligocene Qom Formation and interpretation of palaeoenvironments in the Qom back-arc basin (northern Neotethys) using benthic foraminifera

Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 2020
Amrollah Safari, Hossein Ghanbarloo, Mehran Mohammadian Esfahani, Hossein Vaziri-Moghaddam   +3 more
openaire   +1 more source

Calcareous nannofossils biostratigraphy and paleoecology of the Miocene Qom Formation (Burdigalian, Central Iran) 

During the Early Miocene a global cooler interval was followed by warmer paleoclimate conditions. At the end of the Burdigalian, the Miocene Climatic Optimum (MCO) occurred and brought about global warming and resulting changes in paleoecology and paleoceanography.
Masoud Sharifi-Yazdi, Michael Wagreich, Paula Granero Ordoñez   +2 more
openaire   +1 more source

Systematic notes on Burdigalian Echinoids from the Qom Formation in the Bagher Abad area, Central Iran

2014
Echinoids fauna are common and distributed in the Lower Miocene deposits of the Bagher Abad area, northeast Isfahan, Central Iran.There are six Echinoid taxa belonging to the Echinoidea Class that can be described as: Clypeaster intermedius, Prinocidaris sp. andspines related to: Eucidaris zaemays, Stylocidaris Polyacantha, Spatangoid sp.
Nouradini, Maryam, Yazdi, Mehdi, Ashouri, Alireza   +2 more
openaire   +1 more source

Age determination and evolution of the paleoenvironmental conditions of Oligocene-Miocene sediments (Qom Formation) in the Qom Back-Arc Basin (northern margin of Neotethys), Central Iran

Arabian Journal of Geosciences, 2022
Amrollah Safari, Hossein Ghanbarloo, Mahdiyeh Mahyad   +2 more
openaire   +1 more source