Results 171 to 180 of about 2,150 (191)
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Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2018
The Pir-Sabz Section of the Asmari Formation is located in the Interior Fars province, Zagros Basin (Iran). The Asmari Formation at the study area is 312 m in thickness and formed by massive bedded limestone. According to the identified index microfossils, three Oligocene assemblage biozones were recorded: 1) Globigerina spp., 2) Lepidocyclina ...
Hatefi, Seyed Mohsen +4 more
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The Pir-Sabz Section of the Asmari Formation is located in the Interior Fars province, Zagros Basin (Iran). The Asmari Formation at the study area is 312 m in thickness and formed by massive bedded limestone. According to the identified index microfossils, three Oligocene assemblage biozones were recorded: 1) Globigerina spp., 2) Lepidocyclina ...
Hatefi, Seyed Mohsen +4 more
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Palaeogeography, Palaeoclimatology, Palaeoecology, 2009
Abstract The distributions of sediment grain types and microfacies in two outcrop sections in the central part of the Zagros Fold and Thrust Belt, Iran, are used to interpret changes in salinity during Late Oligocene (Chattian) to Early Miocene (Burdigalian) deposition of the Asmari Formation.
Z.K. Mossadegh +4 more
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Abstract The distributions of sediment grain types and microfacies in two outcrop sections in the central part of the Zagros Fold and Thrust Belt, Iran, are used to interpret changes in salinity during Late Oligocene (Chattian) to Early Miocene (Burdigalian) deposition of the Asmari Formation.
Z.K. Mossadegh +4 more
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Arabian Journal of Geosciences, 2016
The present work is focused on the biostratigraphic analysis, paleoecological interpretations, and paleoenvironmental reconstruction of sediments of the Asmari Formation. The Asmari Formation, which is mainly composed of carbonates, has been studied in the Rig anticline in the Izeh zone, Zagros Basin, Iran.
Umid Kakemem +3 more
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The present work is focused on the biostratigraphic analysis, paleoecological interpretations, and paleoenvironmental reconstruction of sediments of the Asmari Formation. The Asmari Formation, which is mainly composed of carbonates, has been studied in the Rig anticline in the Izeh zone, Zagros Basin, Iran.
Umid Kakemem +3 more
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An Overview of Oil Well Drilling Problems in Shale Formations (Case Study: Asmari Reservoir)
Geosciences and Engineering, 2021Shale layers are found in 75% of the drilled sections in Iran, which causes 90% of the problems of instability of wells, and this can cause a number of problems, such as complete or partial collapse of the well or even loss of the well before it reaches its goal.
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Marine and Petroleum Geology, 2020
Abstract The objective of this paper is to address the impact of texture (and thus the related sedimentary environments and facies and diagenetic overprint) on the geomechanical behavior of the Asmari Formation carbonates. Three sets of data were utilized in this study; i) sedimentological data including thin section petrography, porosity, density ...
Sajjad Gharechelou +3 more
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Abstract The objective of this paper is to address the impact of texture (and thus the related sedimentary environments and facies and diagenetic overprint) on the geomechanical behavior of the Asmari Formation carbonates. Three sets of data were utilized in this study; i) sedimentological data including thin section petrography, porosity, density ...
Sajjad Gharechelou +3 more
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Depositional environment and sequence stratigraphy of the Oligo-Miocene Asmari Formation in SW Iran
Facies, 2005The Asmari Formation, a thick carbonate succession of the Oligo-Miocene in Zagros Mountains (southwest Iran), has been studied to determine its microfacies, paleoenvironments and sedimentary sequences. Detailed petrographic analysis of the deposits led to the recognition of 10 microfacies types.
Hossein Vaziri-Moghaddam +2 more
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Proceedings, 2009
Aboozar field is located approximately 72 km west of Khark Island in offshore Iran. Main reservoir of this field is an Oligo-Miocene stratum called Ghar which is a member of Asmari. Permeability plays important role in reservoir flow and always has much difficulty to be defined and modeled.
S. Zare, S.K. Shiroodi, B. Noori
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Aboozar field is located approximately 72 km west of Khark Island in offshore Iran. Main reservoir of this field is an Oligo-Miocene stratum called Ghar which is a member of Asmari. Permeability plays important role in reservoir flow and always has much difficulty to be defined and modeled.
S. Zare, S.K. Shiroodi, B. Noori
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THE ORIGIN OF DOLOMITE IN THE ASMARI FORMATION (OLIGOCENE‐LOWER MIOCENE), DEZFUL EMBAYMENT, SW IRAN
Journal of Petroleum Geology, 2006Dolomitisation is an important factor controlling reservoir quality in the Asmari Formation in many producing fields in SW Iran. Dolostones have higher average porosities than limestones. Petrographic and geochemical studies have been used to determine the causes of Asmari dolomitisation at the Bibi Hakimeh and Marun fields and at the Khaviz anticline.
A.A.M. Aqrawi +8 more
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Journal of Asian Earth Sciences, 2007
Abstract The Oligocene–Miocene Asmari Formation of the Zagros Basin is a thick sequence of shallow water carbonate. In the study area, it is subdivided into 14 microfacies that are distinguished on the basis of their depositional textures, petrographic analysis and fauna.
Mahnaz Amirshahkarami +2 more
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Abstract The Oligocene–Miocene Asmari Formation of the Zagros Basin is a thick sequence of shallow water carbonate. In the study area, it is subdivided into 14 microfacies that are distinguished on the basis of their depositional textures, petrographic analysis and fauna.
Mahnaz Amirshahkarami +2 more
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Arabian Journal of Geosciences, 2013
In the present research, biostratigraphy and paleoecology of the Asmari Formation at the Shajabil anticline, northwest Yasuj in the Izeh zone are discussed. The Asmari Formation at the studied area is Rupelian–Chattian to Burdigalian in age. In the study, 18 genera and 29 species of benthic foraminifera have been identified.
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In the present research, biostratigraphy and paleoecology of the Asmari Formation at the Shajabil anticline, northwest Yasuj in the Izeh zone are discussed. The Asmari Formation at the studied area is Rupelian–Chattian to Burdigalian in age. In the study, 18 genera and 29 species of benthic foraminifera have been identified.
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